Step-by-step explanation:
1. 4x - 7 = -2x + 12, Given
2. 4x - 7 + 2x = -2x + 12 + 2x, Addition property of equality
3. 6x - 7 = 12, Simplification
4. 6x - 7 + 7 = 12 + 7, Addition property of equality
5. 6x = 19, Simplification
6. 6x/6 = 19/6, Division property of equality
7. x = 19/6, Simplification
Answer:
The steps are :
1. [tex]4x-7=-2x+12[/tex] - This is Given
2. [tex]4x-7+2x=-2x+12+2x[/tex] - Here, addition property of equality is used.
3. [tex]6x-7=12[/tex] - This step is simplification as both the LHS and RHS are being calculated and simplified.
4. [tex]6x-7+ 7=12+7[/tex] - Here, again addition property of equality is applied.
5. [tex]6x =19[/tex] - This is simplification again.
6. [tex]\frac{6x}{6}=\frac{19}{6}[/tex] - Here the division property of equality is applied.
7. [tex]x=\frac{19}{6}[/tex] - This step is simplification.
Afton made a chicken dish for dinner.She added a 10- ounce package of vegetables and a 14-ounce package of rice to 40 ounces of chicken. What was the total weight of the chicken dish in pounds ?
Answer:
The answer is 4 pounds
Step-by-step explanation:
10+14+40=64 oz 64/16 =4
Answer:
4 pounds
Step-by-step explanation:
40 ounces of chicken+ 10 ounces of vegetables+ 14 ounces of rice= 64 ounces of the whole chicken dish.
Now, convert the number of ounces into pounds.
There are 16 ounces in a pound
Or
16 ounces=1 pound
So, divide 16 into 64 to get the number of pounds, which is 4.
Hope this helps!
what is this simplified?
Answer:
2 square root 15, or the second one down
ANSWER
[tex]2 \sqrt{15} [/tex]
EXPLANATION
We want to simplify
[tex] \sqrt{60} [/tex]
There is a perfect square under the radical sign:
[tex] \sqrt{4 \times 15} [/tex] Split the radical sign for both factors:
[tex] \sqrt{4} \times \sqrt{15} [/tex]
Simplify the first factor
[tex]2 \sqrt{15} [/tex]
The second option is correct.
Select the correct answer. What is the area of the triangle in the diagram? A. B. C. D.
Answer:a
aStep-by-step explanation: ive done it
The area of a triangle with a base of 6 cm and height of 8 cm, is 24 cm²
What is an area?
Area is the amount of space occupied by a two dimensional shape or object.
The area of a triangle is given by:
Area of triangle = (1/2) * base * height
Assume the triangle has a base of 6 cm and height of 8 cm, hence:
Area of triangle = (1/2) * 6 * 8 = 24 cm²
The area of a triangle with a base of 6 cm and height of 8 cm, is 24 cm²
Find out more on area at: https://brainly.com/question/25292087
i need help please & thx
13. y > 2
14. x - 13 < 9;; x < 22
15. x + 86 < 263;; at most 177 pounds
philadelphia, witha temperature of 2°C, is warmer than Buffalo, with a temperature of-6°C. write an inequality for the relationship of these temperatures.
Answer:2 > -6 or -6 < 2
Step-by-step explanation:
Answer: 2>-6 is correct
Step-by-step explanation:
We know that 2 is a grater number than -6 so what we can do is put this > but make sure that its facing the 2 and there its simple hope I helped! :p plz rate me
Which is an asymptote of the graph of the function y=tan(3/4x)?
1)x=-4pi/3
2)x=-2pi/3
3)x=3pi/4
4)x=3pi/2
Answer is 2
ANSWER
[tex]x = - \frac{2\pi}{3} [/tex]
EXPLANATION
The given function has equation
[tex]y = \tan( \frac{3}{4}x) [/tex]
This can be rewritten as
[tex]y = \frac{ \sin( \frac{3}{4}x ) } { \cos(\frac{3}{4}x )}[/tex]
The asymptote occurs at:
[tex]\cos(\frac{3}{4}x ) = 0[/tex]
This implies that,
[tex] \frac{3}{4} x = \frac{ \pi}{2} [/tex]
[tex]x = \frac{ \pi}{2} \times \frac{4}{3} [/tex]
[tex]x = \frac{2\pi}{3} [/tex]
Or
[tex]\frac{3}{4} x = - \frac{ \pi}{2} [/tex]
[tex]x = \frac{ - \pi}{2} \times \frac{4}{3} [/tex]
[tex]x = - \frac{2\pi}{3} [/tex]
The second choice is correct.
Answer:
B) [tex]x = \frac{2\pi }{3}[/tex]
Step-by-step explanation:
this is the correct answer on ed-genuity, hope this helps! :)
Freya is training for a track race. She starts by sprinting 200 yards. She gradually increases her distance, adding 5 yards a day for 21 days which explicit formula models this situation
Answer:
The explicit formula is:
[tex]a_n = 200 +5(n-1)[/tex]
Step-by-step explanation:
Freya increases 5 yards daily to the number of yards she runs.
Note that the increase factor is constant, so this problem can be modeled using an arithmetic sequence.
The explicit formula for an arithmetic sequence is:
[tex]a_n = n_1 + d(n-1)[/tex]
Where:
[tex]a_n[/tex] is the number of yards that Freya runs on the day
[tex]a_1[/tex] is the number of yards that he runs on day 1
d is the increase factor. [tex]d = 5[/tex] yards
n is the number of days
Then as [tex]a_1 = 200[/tex] and [tex]d = 5[/tex], the explicit formula is:
[tex]a_n = 200 +5(n-1)[/tex]
Answer:
a_n = 200 (n-1)5
Step-by-step explanation:
just to simplify from those over achievers who confuse the living h e l l out of everyone
which of the following is not used in the geometric constructions?
A. pencil
B. protractor
C. compass
D. ruler
The answer is C. Compass.
Compass isn't used in the geometric constructions.
Among pencil, protractor, compass, ruler protractor is not used in the geometric constructions.
What is a geometric construction?
Geometric construction refers to the process of drawing lines, angles and other geometric shapes and figures using only a compass and a ruler.
Which things are needed to draw geometric figures?
There are four things pencil, protractor, compass, ruler.
For any drawing we need a pencil, To draw straight lines we need a ruler and to draw circles we need to use compass.
Learn more about geometric constructions at https://brainly.com/question/7386615
#SPJ2
Write the function in function notation with the name "g":
y = 4b+ 5
Answer:
g(b)=4b+5
Step-by-step explanation:
because this is how you write it as a function
The average of two numbers is 1/4. One of the numbers is 1/8. Find the other number
Answer:
3/8
Step-by-step explanation:
the formula to find average of a set of values is, you add all the numbers, then you divide by the total amount of numbers.
you can work backwards with your problem by multiplying 1/4*2
[tex] \frac{1}{4} \times 2 = \frac{1}{2} [/tex]
then you subtract 1/8 from that
[tex] \frac{1}{2} - \frac{1}{8} = \frac{3}{8} [/tex]
3/8 is the other number to get an average of 1/4
*10 POINTS* Which variable expression represents the following word phrase?
"8 less than the quotient of 6 and a number"
Question 1 options:
8−6n
8−n6
6n−8
n6−8
Answer:
[tex](\frac{6}{n})-8[/tex] .
Step-by-step explanation:
Given : "8 less than the quotient of 6 and a number".
To find : expression represents the following word phrase.
Solution : We have given 8 less than the quotient of 6 and a number.
According to question :
Quotient of 6 and n = [tex](\frac{6}{n})[/tex] .
For less than we will use negative sign.
8 less than the quotient of 6 and a number.
[tex](\frac{6}{n})-8[/tex] .
Therefore, [tex](\frac{6}{n})-8[/tex] .
Which two elements make up 3/4 of the Earth's crust
Answer:
Oxygen and Silicon
Step-by-step explanation:
Oxygen and Silicon make up 75% of the weight of the Earth's crust.
Answer = oxygen and silicone.
If the area A of a triangle is 45 m2 (square meters) and the altitude h is 15 m, what's the base b?
Answer:
The base b is 6m
Step-by-step explanation:
The area A of a triangle with base b and height h is given by the formula;
[tex]A=\frac{1}{2}*b*h[/tex]
The area of the triangle is given as 45 while the height h is 15. We substitute these known values into the formula above and solve for the unknown base;
[tex]45=\frac{1}{2}*b*15\\\\90=15*b[/tex]
We finally divide both sides by 15 to solve for b;
b = 90/15 = 6
Therefore, the base of the triangle is 6 m
Answer:
[tex]b = 6\ m[/tex]
Step-by-step explanation:
The area of a triangle is
[tex]A = 0.5b * h[/tex]
Where b is the base of the triangle and ha is the height.
In this case we have a triangle with area
[tex]A = 45\ m ^ 2[/tex]
and with height:
[tex]h = 15\ m[/tex]
So the base of the triangle is:
[tex]45 = 0.5b (15)\\\\b=\frac{45}{15*0.5}\\\\b=6\ m[/tex]
Finally the base of the triangle is b = 6 meters
14 points someone please help me quick!
The E3 is the same as writing 10^3.
The answer would be 7.9 x 10^3
A test has twenty questions worth 100 points. The test consists of True/False questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test? (3 points. 1 point for setting up a correct system of equation, 1 point for the work, 1 point for the correct solution.)
Answer:
t+m=20--------> t=20-m
3t+11m=100
Substitute
3(20-m)+m=100
60m-3m+11m=100
Get rid of 60
-3m+11m=40
8m=40
Divide by 8
m=5
This tells us that there are 5 Multiple Choice questions. So the remaining 15 question on the test must be True/False questions.
If we got all 5 Multiple Choice questions correct we would score 11 points for each of the five questions and this would give us 55 points. Then if we got all 15 True/False questions correct at 3 points each, we would score 15 times 3 or 45 points. So the total number of points on the test would be 55 + 45 = 100.
Step-by-step explanation:
The answer is:
There are 15 true/false questions while there are 5 multiple choice questions.
Why?To solve the problem, we need to write two equations using the given information.
We know that there are twenty (20) questions consisting of true/false and multiple choice questions, so, writing the first equation we have:
Let be the true/false questions "x" and the multichoice questions "y".
First equation,
[tex]x+y=20[/tex]
Also, we know that the true/false questions worth 3 points while the multichoice questions worth 11 points making a total of 100 points for the total examen, so, writing the second equation, we have:
Second equation,
[tex]3x+11y=100[/tex]
Now, we have to isolate one of the variables in function of the other variable, so, from the first equation, we have:
[tex]x+y=20[/tex]
[tex]x=20-y[/tex]
Then, substituting "x" into the second equation, we have:
[tex]3x+11y=100[/tex]
[tex]3(20-y)+11y=100[/tex]
[tex]60-3y+11y=100[/tex]
[tex]60+8y=100[/tex]
[tex]8y=100-60=40[/tex]
[tex]y=\frac{40}{8}=5[/tex]
Then, substituting "y" into the first equation, we have:
[tex]x+y=20[/tex]
[tex]x+5=20[/tex]
[tex]x=20-5=15[/tex]
Hence, we have that there are 15 true/false questions while there are 5 multiple choice questions.
Let's prove that we are right by substituting the obtained answers into the both equations, if the equations are satisfied, the answers are ok.
Substituting into the first and the second equation, we have:
First equation,
[tex]x+y=20\\5questions+15questions=20questions\[/tex]
Second equation,
[tex]3x+11y=100points\\3*(15)+11*(5)=100points\\45points+55points=100points[/tex]
We can see that both equations are satisfied, so, the answers are ok.
Have a nice day!
Use the ordered pairs to write a function rule. Give the rule in the slope-intercept form.
(–12, 1.5), (−1, –1.25), (5, –2.75), (8, −3.5)
Please explain how you got your slope and how you found b.
Answer:
(−1, –1.25), (5, –2.75)
Step-by-step explanation:
If "slope-intercept form" is mentioned, then we already know that the function rule is that of a straight line with slope m and y-intercept b.
As we go from (−1, –1.25) to (5, –2.75), x increases by 6 and y decreases by 1.50. Thus, the slope, m, is m = rise / run = -1.50 / 6, or m = -0.25 or -1/4.
Choosing one of the given points at random: (8, -3.5), we start with the slope-intercept form y = mx + b and substitute -1/4 for m, 8 for x and -3.5 for y: y = mx + b becomes -3.5 = (-1/4)(8) + b. Then -3.5 + 2 = b, or b = -1.5.
The desired equation is y = (-1/4)x - 3/2, or y = -0.25x - 1.5
To write a function rule in slope-intercept form for the given ordered pairs, we need to calculate the slope and find the y-intercept. The slope can be calculated using the formula (Y2 - Y1) / (X2 - X1), and the y-intercept can be found by using the point-slope form and substituting one of the ordered pairs. The function rule in slope-intercept form for the given ordered pairs is y = -0.25x - 1.5.
Explanation:To write a function rule in slope-intercept form, we need to find the slope (m) and the y-intercept (b). Given the ordered pairs (–12, 1.5), (−1, –1.25), (5, –2.75), (8, −3.5), we can calculate the slope using the formula m = (Y2 - Y1) / (X2 - X1). Let's choose two ordered pairs to calculate the slope:
Using (–12, 1.5) and (−1, –1.25):
m = (-1.25 - 1.5) / (-1 - (-12)) = (-2.75) / (11) = -0.25
Now, we can use the point-slope form y - y1 = m(x - x1), where (x1, y1) is one of the ordered pairs and substitute the slope and one of the points to find the y-intercept:
Using the ordered pair (–12, 1.5):
y - 1.5 = -0.25(x - (-12))
y - 1.5 = -0.25(x + 12)
y - 1.5 = -0.25x - 3
y = -0.25x - 3 + 1.5
y = -0.25x - 1.5
Therefore, the function rule in slope-intercept form (fraction form) is y = -0.25x - 1.5.
Learn more about Writing Function Rule in Slope-Intercept Form here:https://brainly.com/question/29081496
#SPJ3
HELLLPPP!!!!!!! PLEASE READ
Answer:
f(x) ⇒ Graph C
g(x) ⇒ Graph D
h(x) ⇒ Graph A
j(x) ⇒ Graph E
Step-by-step explanation:
* Lets revise the quadratic function and its inverse
- The quadratic function if f(x) = x², its vertex is the origin
- To find its inverse, switch x and y and solve for y
∵ y = x² ⇒ switch x and y
∴ x = y² ⇒ solve for y
∴ y = ± √x
- If y = √x , then the graph is up the x-axis
- If y = -√x , the graph is down the x-axis
∴ The inverse function is y = √x
* Now lets solve the problem
- All the figure are the inverses of the quadratic function y = x²
∵ f(x) = √(x - 1)
# x - 1 means the graph move to the right 1 unit
∴ Its vertex is (1 , 0)
* The graph of f(x) = √(x - 1) is graph C
∵ g(x) = -√x
# The sign (-) means the graph reflected about the x-axis
∴ Its vertex is (0 , 0) but the graph under the x-axis
* The graph of g(x) = -√x is graph D
∵ h(x) = √x
∴ Its vertex is (0 , 0)
- It is the inverse of y = x² , the graph up to the x-axis
* The graph of h(x) = √x is graph A
∵ j(x) = -√(x - 1)
# x - 1 means the graph move to the right 1 unit
# The sign (-) means the graph reflected about the x-axis
∴ Its vertex is (1 , 0) , the graph down the x-axis
* The graph of j(x) = -√(x - 1) is graph E
interquartile range of 6 26 27 28 29 30 32 36 38 40
Hello There!
The "Inter-Quartile Range" is 9
Answer:
The interquartile range is 9
Step-by-step explanation:
7848 / 4 what
Is the quotient
[tex]\text{Hey there!}[/tex]
[tex]\text{Both numbers are divisible to 4, so divide the numerator and denominator from 4}[/tex]
[tex]\frac{7,848\div4}{4\div4}[/tex]
[tex]\text{7,848}\div4=1,962[/tex]
[tex]\text{4}\div4=1[/tex]
[tex]\text{1,962}\div1=1,962[/tex]
[tex]\boxed{\boxed{\text{Answer: 1,962}}}\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
for the equation y= 6x2 - 9x + 22, choose the correct application of the quadratic formula.
it’s the last option
The correct application of the quadratic formula is:
[tex]x=\dfrac{9\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}[/tex]
Step-by-step explanation:The quadratic equation is given by:
[tex]y=6x^2-9x+22[/tex]
We know that the solution of the quadratic equation:
[tex]y=ax^2+bx+c[/tex]
is given by:
[tex]y=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
Here we have:
[tex]a=6[/tex]
[tex]b=-9[/tex]
and
[tex]c=22[/tex]
Hence, the quadratic formula is given by:
[tex]x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4\cdot (6)\cdot (22)}}{2\cdot (6)}[/tex]
i.e.
[tex]x=\dfrac{9\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}[/tex]
what is the solution of the equation x to the power of 2=
64
Answer: x= 8
Step-by-step explanation:
x^2 = 64
sqrt{x^2} = sqrt64}
x = 8
Order the following integers from least to greatest:
−41,−51,−38, 50, 41 and 13
Answer:
-51, -41, -38, 13, 41, 50
Step-by-step explanation:
The integers ordered from least to greatest are: -51, -41, -38, 13, 41, 50.
To order the integers from least to greatest, one must start by identifying the negative integers and then the positive integers. Among negative integers, the larger the absolute value, the smaller the number. Conversely, for positive integers, the larger the number, the greater it is.
Starting with the negative integers:
-51 is the smallest because it has the largest absolute value among the negative numbers.
-41 is the next smallest negative number.
-38 is the smallest negative number because it has the smallest absolute value among the negatives.
Now, moving on to the positive integers:
13 is the smallest positive number.
41 is the next smallest positive number.
50 is the largest positive number.
Putting it all together:
-51, -41, -38, 13, 41, 50.
When treated with an antibiotic, 94% of all the dolphins are cured of an ear infection. If 8 dolphins are treated, find the probability that exactly 4 are cured.
The question is a binomial distribution problem in mathematics. You can use the binomial probability formula to calculate the probability that exactly 4 out of 8 treated dolphins are cured.
Explanation:This mathematics problem involves understanding probability and the binomial distribution. The word 'exactly' is a clue that this is a binomial problem.
The general formula for a binomial probability is: P(X = k) = C(n, k) * (p^k) * ((1-p)^(n-k)), where:
n is the number of trials (number of dolphins in this case) k is the number of successful trials we are interested in (number of cured dolphins) p is the individual success probability (probability a dolphin gets cured).
So, if we substitute the values into the formula, we have:
P(X = 4) = C(8, 4) * (0.94^4) * ((1-0.94)^(8-4))
Therefore, Use this formula to find the probability that exactly 4 out of 8 dolphins are cured.
Learn more about Binomial Probability here:https://brainly.com/question/33993983
#SPJ11
PLZ HELP
The perimeter of a rectangle is 24 in. and its length l is 3 times the width w. what is the length and width of the rectangle?
A.(3,9)
B.(14.4,4.8)
C.(12,4)
D.(9,3)
Answer:
A)3,9
Step-by-step explanation:
lets take the length as "x"
since the width is 3 times the length we can use 3x to represent the width
formula for perimeter: 2(l)+2(w)
2(x)+2(3x)=24
2x+6x=24
8x=24
8x/8=24/8
x=3
if x is 3, the length is 3
if x is 3, the width, 3x is 9, (3*3)
The dimensions of the rectangle are a length of 9 inches and a width of 3 inches, with the width being one-third of the length. This corresponds to option D (9, 3) in the list of given choices.
The length and width of the rectangle when the perimeter is 24 inches and the length l is 3 times the width w, we can set up equations based on the formula for the perimeter of a rectangle, which is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.
Given that l = 3w, we substitute this into the perimeter formula to get:
24 = 2(3w) + 2w24 = 6w + 2w24 = 8w
Dividing both sides by 8 to solve for w:
w = 3
Now that we know the width is 3 inches, we can find the length by multiplying the width by 3:
l = 3w = 3(3) = 9
So, the length is 9 inches, and the width is 3 inches, which corresponds to option D. Therefore, the dimensions of the rectangle are a length of 9 inches and a width of 3 inches.
Find the surface area of the cylinder to the nearest tenth of a square u it
Answer:
Step-by-step explanation:
Surface area of a cylinder = 2 x 3.14 x rh + 2 x 3.14 x r^2
S.A. = (2 x 3.14 x 3 x 18.2) + (2 x 3.14 x 3^2)
S.A. = 399.4cm^2
Emily, Carl and Antony altogether has 121 stamps. How many stamps doeas each of them have, if it is known, that Emily has 40% more than Carl, and Carl has 60% more than Antony?
Answer:
Step-by-step explanation:
1. First, put together the information we have. Total = 121. Emily has 40% more than Carl, and Carl has 60% more than Antony.
2. Next, set each person as a variable. Antony = x. Carl = 1.6x. Emily = 1.4 times 1.6x.
3. Next, form an equation using these variables.
x + 1.6x + (1.4 x 1.6x) = 121
x + 1.6x + 2.24x = 121
4.84x = 121
x = 25
4. Finally, plug in x to our previous variables in step #2 to find the number of stamps Emily and Carl have.
Antony: x = 25 stamps
Carl: 1.6x = 40 stamps
Emily: 1.4 times 1.6x = 56 stamps
By the way, is this for RSM? If so, I am working on that problem right now and I searched up the solution but couldn't find it, so I stumbled upon this. I hope this helped!
Linda earns 13 dollars each hour working part-time at a bookstore. She earns one additional dollar for each book that she sells. Let A be the amount (in dollars) that Linda earns in an hour if she sells B books. Write an equation relating A to B . Then graph your equation using the axes below. I know that is say s graph but can ya'll just give the where the points go, please and thanks.
Answer:
A=13+B
Step-by-step explanation:
Linda earns $13 each hour working part-time at a bookstore.
Linda earns $1 for each book she sells.
Let
A be the amount (in dollars) that Linda earns in an hour;
B be the number of books Linda sells in an hour.
So,
[tex]A=13+B\cdot 1\\ \\A=13+B[/tex]
The graph is shown in attached diagram
Convert 192 cups to gallons. Enter your answers in the boxes. There are cups in 1 gallon. Therefore, 192 cups is equal to gallons.
Answer:
192 cups is equal to 12 gallons
Step-by-step explanation:
we know that
1 cup=0.0625 gal
or
1 gal=16 cups
Method 1
192 cups=192*0.0625=12 gal
Method 2
192 cups=192/16=12 gal
Answer:
Step-by-step explanation:
Convert 192 cups to gallons. Enter your answers in the boxes.
For the blanks answer it like this
There are 16 cups in 1 gallon. Therefore, 192 cups is equal to
12 gallons.
30 points and brainliest!! HELP NOW
Answer:
First question
a = 1 , h = 0 , k = 6 ⇒ third answer
Second question
y = 2x² + 4 ⇒ second answer
Third question
No of the choices correct ⇒ fourth answer
Step-by-step explanation:
First question
∵ f(x) = x² + 6
- It is a quadratic function with general form ax² + bx + c
- Its vertex is (h , k), where h = -b/2a and k = f(h)
∵ a = 1 , b = 0 , c = 6
∴ h = 0/2(1) = 0
∴ f(0) = 0² + 6 = 6
∴ a = 1 , h = 0 , k = 6 ⇒ third answer
Second question
- If the function f(x) translated vertically up
by k units, then the new function g(x) = f(x) + k
- If the function f(x) translated vertically down
by k units, then the new function g(x) = f(x) – k
∵ y = 2x²
∵ y is shifted 4 units up
∴ k = 4
∴ y + 4 = 2x² + 4
∴ y = 2x² + 4 ⇒ second answer
Third question
∵ y = -2x² + 3
- It is a quadratic equation with general form ax² + bx + c
- It represented graphically by parabola
- If a is positive the parabola opens upward
- If a is negative the parabola opens downward
∵ a = -2
∴ The parabola opens downward
∴ No of the choices correct ⇒ fourth answer
Which polynomial represents the difference below? A. –x2 + 6x + 3 B. –x2 + 12x + 3 C. 5x2 + 3x + 3 D. 5x2 + 6x + 3
Answer: -x^2+12x+3
Step-by-step explanation: