Answer:
x=(3+sqrt(7)*i)/4, (3-sqrt(7)*i)/4.
Step-by-step explanation:
Apply the quadratic formula.
Answer:
[tex]x = \frac{3 +/- i \sqrt{7} }{4}[/tex]
Step-by-step explanation:
[tex]2x^{2} -3x + 2 = 0[/tex]
a =2 b = -3 c = 2. Substitute these into the quadratic formula [tex]x = \frac{-b +/- \sqrt{b^{2}- 4ac} }{2a}[/tex].
[tex]x = \frac{-(-3)+/- \sqrt{(-3)^{2} - 4(2*2)} }{2(2)}[/tex] Simplify.
[tex]x = \frac{3+/-\sqrt{(9)^{2} - 4(4) } }{4}[/tex] Keep simplifying...
[tex]x = \frac{3+/-\sqrt{9-16} }{4}[/tex] Simplify again...
[tex]x = \frac{3 +/-\sqrt{-7} }{4}[/tex] There will be an imaginary number because the number under the [tex]\sqrt{}[/tex] is negative, so
[tex]x = \frac{3+/-i\sqrt{7} }{4}[/tex]
There are 182 adults and 18 children attending a wedding
reception as guests of the bride and groom. The guests will be
seated in groups of eight at each table. How many tables are
needed for the wedding guests?
Answer:
Step-by-step explanation:
Total number of guest = 182+18
= 200 guests
If 8 are using a table then the number of tables needed = 200/8
= 25tables
Answer: D
16*12 is 192. Plus the 6 for the bride and groom, and you get a total of 198.
What is the period of the function F(x) = 2 cot(3x-1) ?
HELP,
Would I have to subtract 180 from 70 to get the answer for C?? What would the answer be?
Answer:
Angle C is equal to 30.
Step-by-step explanation:
To find angle C, we have to find all the other angles first. They tells us the B ~= BAD ~= ADC. So, if we find ADC, we've found B and BAD as well. ADC is just 180 - 70 (the angle of ADE), which is 110. So, ADC, BAD, and B are equal to 110.
Remember, angles in a quadrilateral add up to 360. So, add all of the values of angles be have now and subtract from 360:
360 - (110 + 110 + 110)
360 - 330 = 30
Angle C should be equal to 30.
Hope this helped!
What is the solution to the equation 4x + 2(x − 3) = 3x + x − 12? (1 point) Group of answer choices −3 −1 1 3
Answer:
-3
Step-by-step explanation:
[tex]4x + 2(x-3) = 3x + x-12\\4x+2x-6=4x-12\\2x=-6\\x=-3[/tex]
A function is represented by the values in the table.
x y
22 26
20 22
16 20
14 18
10 14
The function represented in the table _________ linear.
A. is not
B. is
Which expression describes these arrays?
3 x (3 x 2)
2 x (3 x 2)
2 + (3 x 2)
ate Windows
PC settings to activate Wing
Step-by-step explanation:
[tex]3 \times (3 \times 2) = 18 \\ 2 \times (3 \times 2) = 12 \\ 2 + (3 \times 2) = 8[/tex]
(x, 7) and (11, 8); m = -1/5
Plz help
Answer:
This tells us that the line with slope -1/5 passes through the two points (16, 7) and (11, 8). The previously unknown x-coordinate is 16.
Step-by-step explanation:
A line with slope m = -1/5 passes through the points (x, 7) and (11, 8). Find the value of x.
The slope of the line through these two points is found from the slope formula and is:
8 - 7
m = ----------- and the value of m is given as -1/5. Therefore,
11 - x
1
m = ----------- = -1/5
11 - x
Cross-multiplying, we get (1)(5) = -(11 - x), or 5 = -11 + x. Then x = 16
This tells us that the line with slope -1/5 passes through the two points (16, 7) and (11, 8). The previously unknown x-coordinate is 16.
Find a polynomial, which if substituted for M will make the equation an identity: a M–(4ab–3b2)=a2–7ab+8b2
Answer:
a² – 3ab + 5b²
Step-by-step explanation:
M – (4ab – 3b²) = a² – 7ab + 8b²
M = a² – 7ab + 8b² + 4ab – 3b²
M = a² – 3ab + 5b²
Answer:
image
Step-by-step explanation:
image
Can somebody please help me
Answer:
a = 5
Step-by-step explanation:
3(a - 4) + 1 = 9 - a Distribute the 3 into a-4
3a - 12 + 1 = 9 - a Combine like terms
[-12 and 1]
3a - 11 = 9 - a Add 11 to both sides to isolate 3a
+11 +11
3a = 20 - a Add a to remove it and have all a
+a +a
4a = 20 Divide by 4 to only have a
/4 /4
a = 5
Hi there! The answer should be a = 5. I have included an image with the process. Hope this helps for future reference!
P.S. It is okay with me if you save the image for help later. :)
NEED ASAP PLEASE HELP!!!! An employee deposits $400 of their pay check into an investment account that earns 2.6% interest annually. No withdrawals or deposits are made over a 6 year period. Find the value of the account in 2 years
Answer:
$420.8
Step-by-step explanation:
An employee deposits $400 of their paycheck into an investment account that earns 2.6% interest annually.
We assume that the investment account gives a simple interest against the deposits.
If there is no withdrawals or deposits in the account other than this, then after 2 years the sum in the account will be
[tex]400(1 + \frac{2.6 \times 2}{100}) = 420.8[/tex] dollars (Answer)
Answer:
The amount in the account after 2 years is $421.04
Step-by-step explanation:
Given as :
The principal deposited into account = p = $400
The rate of interest applied = r = 2.6%
The time period = t = 2 year
Let The amount for 2 years in the account = $A
From Compound Interest method
Amount = Principal × [tex](1+\dfrac{\textrm rate}{100})^{\textrm time}[/tex]
Or, $A = p × [tex](1+\dfrac{\textrm r}{100})^{\textrm t}[/tex]
Or, $A = $400 × [tex](1+\dfrac{\textrm 2.6}{100})^{\textrm 2}[/tex]
Or, $A = $400 × (1.026)²
Or, $A = $400 × 1.0526
∴ A = $ 421.04
So, The amount = A = $421.04
Hence The amount in the account after 2 years is $421.04 Answer
The range of which function includes -4?
y= half root x-5
y= half root x +5
y= root x+5
y= root x-5
Answer:
[tex]y=\sqrt x - 5[/tex]
Step-by-step explanation:
Given:
The range of the function includes the value '-4'.
The range of a function is the output of the function denoted by the variable 'y'. The input of the function is called the domain and is represented by the variable 'x'.
Here, the 'y' value is -4 which is a negative number.
The last two options given represent a square root function. We know that, the output of a square root function is always a positive number. So, for the last two options the range is always greater than or equal to 0. Thus, these two options are eliminated.
Now, if we consider the second option, let us replace 'y' by -4 and solve for 'x'. This gives,
[tex]-4=\sqrt x + 5\\-4-5=\sqrt x\\\sqrt x= -9[/tex]
But, we know that, the result of a square root function is never negative. Therefore, this option is also incorrect.
Hence, only the first function is correct which can verified below.
[tex]y=\sqrt x-5\\-4=\sqrt x-5\\\sqrt x=-4+5\\\sqrt x=1\\x=1[/tex]
So, we got a positive result without violating the definition of square root functions.
Therefore, the correct answer is [tex]y=\sqrt x-5[/tex]
Answer:
A. is the right answer on edge. 2020
Step-by-step explanation:
Peggy had three times as many quarters as nickels. She had $1.60 in all. How many nickels and how many quarters did
she have?
If the variable n represents the number of nickels, then which of the following expressions represents the number of
quarters?
Answer:Let
n-------> the number of nickels
q------> the number of quarters
we know that
1\ quarter=\$0.25\\1\ nickel=\$0.05
so
0.05n+0.25q=1.60 ----> equation A
q=3n ----> equation B
substitute equation B in equation A
0.05n+0.25[3n]=1.60
0.05n+0.75n=1.60
0.80n=1.60
n=2
Find the value of q
q=3*2=6
therefore
The answer part a) is
the number of nickels are 2 and the number of quarters are 6
the answer Part b) is
The expressions that represents the number of quarters is
q=3n
Step-by-step explanation:
plz come on somebody
The area of the parallelogram is equal to the product of its base and height, the area is the twice of πr,r or πr².
Step-by-step explanation:
The circumference of a circle = 2πr.
where r= radius of the circle.
If the circle is divided into equal sectors it will form a triangle.
If we arrange these triangle one by one we'll get a parallelogram. (refer the image).
Then the circumference of the circle becomes the base of the parallelogram and radius becomes the height.
∴Base= 2πr and Height=r.
The area of the parallelogram = Base×Height.
∴ The area for the circle turned parallelogram = 2πr×r.
⇒Area= 2πr².
In other words, twice the πr and r (or) πr².
Thus area of a circle can be derived from the circumference formula.
Answer:
Product
Step-by-step explanation:
WILL GIVE BRAINLIEST PLEASE HELPP PLEASE HLEP
Answer:
A could work
Step-by-step explanation:
Because it is a square, all angles should be 90 degrees
Answer:Try B
Step-by-step explanation:
If its right please give me brainiest
Please help with remaining and/or correct what I have
Answer:
Step-by-step explanation:
k² = -18 - 9k
k² +9k + 18 = 0
k² + 6k + 3k + 3*6 = 0
k(k + 6) + 3 (k + 6) = 0
(k + 6) (k + 3) =0
-2v²- v +12 = -3v² + 6
-2v² - v + 12 + 3v² - 6 = 0
v² - v + 6 = 0
Which of the lines graphed has a slope of -1/2 and a y-intercept of 3
(WORTH 100 POINTS AND WILL GIVE BRIANLIEST)
Answer:
The correct option is C).
Figure show the line with slope of -1/2 and a y-intercept of 3
Step-by-step explanation:
The equation of line is given by y=mx+c.
Where m is slope and c is y-intercept.
Given that line has slope
m=[tex]\frac{-1}{2}[/tex] and c=3
Thus equation of line will be
y=mx+c.
y=[tex]\frac{-1}{2}x+3[/tex]
To plot the line we need at least two points
Take x=0
y=[tex]\frac{-1}{2}x+3[/tex]
y=[tex]\frac{-1}{2}0+3[/tex]
y=3
The required point is A(0,4)
Take x=2
y=[tex]\frac{-1}{2}2+3[/tex]
y=2
The required point is B(2,2)
Using this points to graph the given equation of line
Figure show the line with a slope of -1/2 and a y-intercept of 3
The correct option is C).
Answer:
B
Step-by-step explanation:
I’m not sure but I put in c and got it wrong and that is the only other one that appears to be going on a negative slope
Part I: If Brad is 156 centimeters tall, how tall is he in inches?
A. Create a conversion ratio that relates centimeters to inches. (Hint: 1 inch is approximately
2.54 centimeters.) (2 points)
B. Multiply the given number of centimeters by the conversion ratio you found in A
Show your work. (2 points)
C. Approximately how many feet tall is Brad? Round your answer to the nearest tenth of a foot
Show your work. (4 points)
(Hint: Convert the number of inches found in B. to feet.)
PLZZ HELP ITS FO APEX
Answer: A. 1cm=0.3937 inch
B. 61.417inch
C. 5.1 ft
Step-by-step explanation:
A.
1inch=2.54cm
1/2.54=0.3937 inch
1cm=0.3937 inch
B. 156cm*0.3937=61.417 inch
C: 1 ft=12 inch
1:12=X:61.417
61.417 =12x
x=5.1 ft
Use the term equal groups to describe the division problem shown below. 123 divided by 5 equals 24r3
The division problem 123 divided by 5 equals 24r3 is about arranging 123 objects into equal groups of 5. There will be 24 groups with 3 objects remaining that can't be added into any group.
Explanation:In the division problem 123 divided by 5 equals 24r3, we're dividing the number 123 into equal groups of 5. When you divide 123 by 5, the quotient (or answer) is 24 and the remainder is 3. This means you can make 24 equal groups of 5 from the number 123, and you would have 3 left over which couldn't form a complete group of 5.
So, in terms of equal groups, you can say: '123 objects can be arranged into 24 equal groups of 5, with 3 objects remaining that cannot be added into any group because it would make that group unequal to the others.'
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Given the expression 2/5 - 4/6, write the addition problem that is equivalent to it
Answer:
-4/15
Step-by-step explanation:
2/5-4/6=2/5-2/3=6/15-10/15=-4/15
Solve the linear equation, 2x+4=14
In this question, you would be solving for x.
Solve for x:
2x + 4 = 14
Subtract 4 from both sides
2x = 10
Divide both sides by 2
x = 5
Answer:
x = 5
Felipe picked a pumpkin that weighed three times the weight of Meg's pumpkin Meg's pumpkin with half the weight of Ryan's pump Ryan's pumpkin weighed 14 lb how much did Felipe's pumpkin weigh
Answer:
21 lb
Step-by-step explanation:
Divide the amount of Ryan's pumpkin by 2 then multiply it by 3. Ryan's pumpkin weighs 14 lb divided by 2 is 7 then 7 multiplied by 3 is 21.
To find the weight of Felipe's pumpkin, we first determine that Meg's pumpkin weighs 7 pounds, which is half of Ryan's pumpkin's weight of 14 pounds. We then multiply Meg's pumpkin's weight by 3 to find that Felipe's pumpkin weighs 21 pounds.
The question asks to determine the weight of Felipe's pumpkin given the weight relationships between Felipe's, Meg's, and Ryan's pumpkins. We are told that Ryan's pumpkin weighs 14 pounds and that Meg's pumpkin is half the weight of Ryan's. This means Meg's pumpkin weighs 7 pounds (14 lb / 2). Since Felipe's pumpkin weighs three times as much as Meg's, we have to multiply Meg's pumpkin's weight by 3 to find the weight of Felipe's pumpkin: 7 lb x 3 = 21 pounds.
So, Felipe's pumpkin weighs 21 pounds.
What is the length of AC¯¯¯¯¯ ? Enter your answer in the box. units Triangle A B C with vertical side A C. Vertex B lies to the right of side A C. Angle A and angle C are marked congruent. The length of side A C is labeled as x. The length of side A B is labeled as x plus 4. The length of side B C is labeled as 3 x minus 8.
Since m<A ≅ m<C, AB = BC.
And...
x+4=3x-8
-2x=-12
x=6
Since AC=x, AC=6.
answer: AC = 6
Answer:
Length of AC is 6
Step-by-step explanation:
he side AC = x ;we need to find x; since ∠A = ∠C , It's an isosceles triangle . i.e ,the sides opposite to the angles ( AB and CB ) are also equal. thus ,side AB = x+4 ;CB = 3x-8 ;thus AB = CB or ,x+4 = 3x-8 ,2x = 12 ,x = 6 ; therefore the side AC is 6.
hope this helped
Which number is not in scientific notation? 1.1 ⋅ 10213 7.8 ⋅ 108 3.02 ⋅ 10−10 35 ⋅ 104
Answer:
35 ⋅ 104
(I hope this helped)
Answer:
35 ⋅ 104
Step-by-step explanation:
this was on my test and got it right. i hope this helped tho
Factor completely, then place the answer in the proper location on the grid
a^3-b^3
Answer:
[tex]\displaystyle [a - b][a^2 + 2ab + b^2][/tex]
Step-by-step explanation:
Use the Difference of Cubes to factor this polynomial.
I am joyous to assist you anytime.
Elise made a scale drawing of a shopping center. The scale of the drawing was 1.5 inch :3
feet. In the drawing, a bakery in the shopping center is 13 inches wide. What is the width
of the actual bakery?
Answer:
The actual width is 26 feet.
Step-by-step explanation:
Elise made a scale drawing of a shopping center. The scale of the drawing was 1.5 inches : 3 feet = 1.5 inches : 36 inches = 1 : 24.
Now, in the drawing, a bakery in the shopping center is 13 inches wide.
Therefore, the actual width of the bakery in the shopping center will be the increased value of 13 inches in the ratio 1 : 24.
So, the actual width is (13 × 24) inches = 312 inches i.e. 26 feet. (Answer)
The actual width of the bakery is calculated using the scale factor from the drawing. This can be achieved by multiplying the drawn width of the bakery (in inches) by the scale factor to get the actual width (in feet). Thus, the actual width of the bakery is 26 feet.
Explanation:The subject of this question is scale factor in mathematics, specifically in the context of real-world scenarios, like a scale drawing. The scale of the drawing is 1.5 inches: 3 feet, which represents a scale factor of 2 feet per inch (because 3 feet/1.5 inches = 2 feet per inch). In the drawing, the bakery is stated to be 13 inches wide.
To convert this to the actual width, one should multiply the width in the drawing (13 inches) by the scale factor (2 feet per inch). Hence, the actual width of the bakery is 26 feet (because 13 inches * 2 feet per inch = 26 feet).
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h(n)=−31−7(n−1) complete the recursive formula for h(n)
Answer:
h(n+1) = h(n) - 7
Step-by-step explanation:
Our objective is to write the expression for h(n+1) in terms of h(n) which equals -31 -7(n-1)
So we use the given formula to find what h(n+1) is:
h(n+1) = -31 -7((n+1)-1)
h(n+1) = -31 -7(n+1-1)
we now re-arrange the order of terms inside the parenthesis without combining like terms:
h(n+1) = -31 -7(n-1+1)
and use distributive property to multiply "-7" times the "+1" term and get it extracted from inside the parenthesis:
h(n+1) = -31 -7(n-1) -7
Notice that this way we were able to preserve the form of the term h(n) "-31 -7(n-1)" , and see what is the modification introduced to it when finding the term h(n+1). We now replace "-31 -7(n-1)" by "h(n)" in the above equation:
h(n+1) = -31 -7(n-1) -7
h(n+1) = h(n) - 7
And this is the recursive formula that tells us how to construct the following term of a sequence by knowing the previous one.
Answer:
h(1)=-31
h(n)=h(n-1)+(-7)
Step-by-step explanation:
(20 points) A 2-liter bottle of soda (67.6 ounces) costs $1.89. A case of twelve 12 ounce
cans of the same soda costs $2.99. Calculate the unit price (price/ounce) of each
item and determine which is the better bargain.
Answer:
Unit price of a 2-liter bottle of soda: [tex]\$0.028\ per\ ounce[/tex] Unit price of a case of twelve 12 ounce cans: [tex]\$0.021\ per\ ounce[/tex] The better bargain is the case of 12 ounce cans.Step-by-step explanation:
Let be "x" the unit price (price/ounce) of the soda in the 2-liter bottle and "y" the unit price (price/ounce) of the soda in the case of twelve 12 ounces cans.
According to the data provided in the exercise, you know that:
1. The 2-liter bottle of soda is equal to 67.6 ounces.
2. That bottle costs $1.89
Then, the unit price is:
[tex]x=\frac{1.89}{67.6}\\\\x\approx0.028[/tex]
3. There are 12 ounce cans in the case. Then the total ounces is:
[tex]12\ oz*12=144\ oz[/tex]
4. It costs $2.99. So the unit price is:
[tex]y=\frac{2.99}{144}\\\\y\approx0.021[/tex]
Since:
[tex]y<x[/tex]
The better bargain is the case of 12 ounce cans.
5x−2y=30
Complete the missing value in the solution to the equation.
(8,?)
Answer:
y=5
Step-by-step explanation:
5(8)-2y=30
40-2y=30
2y=40-30
2y=10
y=10/2
y=5
4 coffees and 12 lattes. Costs $61
12 coffees and 7 lattes. Costs $59.75
How much does a coffe and a latte cost
Answer:
Cost of a coffee is $2.5 and cost of a latte is $4.25.
Step-by-step explanation:
Let cost of 1 coffee be 'c' and cost of 1 latte be 'l' dollars.
Given:
4 coffees and 12 lattes cost $61.
12 coffees and 7 lattes cost $59.75.
∵ 1 coffee cost = [tex]c[/tex]
∴ 4 coffees cost = [tex]4c[/tex] and 12 coffee cost = [tex]12c[/tex]
∵ 1 latte cost = [tex]l[/tex]
∴ 12 lattes cost = [tex]12l[/tex] and 7 lattes cost = [tex]7l[/tex]
Now, as per question:
[tex]4c+12l=61-----1\\12c+7l=59.75----2[/tex]
Now, multiplying equation (1) by -3 and adding the result to equation (2). This gives,
[tex]-3(4c+12l)=-3(61)\\\\-12c-36l=-183\\12c+7l=59.75\\+\\----------\\0-29l=-123.25\\\\l=\frac{-123.25}{-29}=\$4.25[/tex]
Now, plug in the value of 'l' in equation 1 to solve for 'c'. This gives,
[tex]4c+12(4.25)=61\\\\4c+51=61\\\\4c=61-51\\\\4c=10\\\\c=\frac{10}{4}=\$2.5[/tex]
Therefore, cost of a coffee is $2.5 and cost of a latte is $4.25.
A system of linear equations can determine the cost of a coffee and a latte, which are found to be $2.50 and $4.25 respectively.
To solve the question how much does a coffee and a latte cost, we can treat it as a system of linear equations problem. We have the following two equations based on the given information:
4 coffees + 12 lattes = $61
12 coffees + 7 lattes = $59.75
Let's denote the cost of one coffee as c and the cost of one latte as l. We can now rewrite the equations as:
4c + 12l = 61
12c + 7l = 59.75
Multiplying the first equation by 3 gives us:
12c + 36l = 183
Now we can subtract the second equation from this new equation to find the cost of lattes:
(12c + 36l) - (12c + 7l) = (183 - 59.75)
29l = 123.25
l = 123.25 / 29
l = $4.25
Having found the cost of a latte, we can now substitute this back into the first original equation to find the cost of a coffee:
4c + 12(4.25) = 61
4c + 51 = 61
4c = 10
c = 10 / 4
c = $2.50
Therefore, a coffee costs $2.50 and a latte costs $4.25.
a function is defined by equation f(x)=-3x+2 what is the average rate if change for the function on the interval from x =-2 to x = 2
The average rate of change for the function on the interval from x = -2 to x = 2 is 1.
Explanation:The average rate of change for a function on an interval is calculated by finding the slope of the line connecting the two endpoints of the interval. In this case, the interval is from x = -2 to x = 2.
To find the slope, we need to find the change in y values divided by the change in x values. In other words, we need to find the difference in f(x) values divided by the difference in x values.
Substituting the given function into the equation, we have:
slope = (f(2) - f(-2)) / (2 - (-2)) = (-3(2) + 2 - (-3(-2) + 2)) / (2 + 2)
= (-6 + 2 + 6 + 2) / 4
= 4 / 4 = 1.
Therefore, the average rate of change for the function on the interval from x = -2 to x = 2 is 1.
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