Answers
Hope this helps you
Answer:
a, b, c
Step-by-step explanation:
f(x) = 3(1/4)^x
a. (-2, 48)
f(-2) = 3(1/4)^(-2) = 3(4)^2 = 3 * 16 = 48
(-2, 48) is on the graph.
b. (0, 3)
f(0) = 3(1/4)^(0) = 3(1) = 3
(0, 3) is on the graph.
c. (2, 3/16)
f(2) = 3(1/4)^(2) = 3(1/16) = 3/16
(2, 3/16) is on the graph.
d. (12, 0)
f(12) = 3(1/4)^(12) = 3(0.000000596)
f(12) does not equal zero.
(12, 0) is not correct
Related Questions
If dh = 3x-3 and fh=x+7 find the value of x for which defg must be a parallelogram
Answers
I'm not sure I follow this as it's asked.
parallelogram
DH = FH
3x -3 = x + 7
2x = 10
x = 5
Answer
c. 5All tutors that are employed at a local college must take a test and must score in the top 20%. if the scores are normally distributed with a mean of 78 and a standard deviation of 5, what is the cutoff score to be hired?
Answers
To solve this problem, we use the z statistic with formula:
z = (x – u) / s
or
x = s z + u
First we find the value of z at P = top 20%
z = 0.84
So the cut-off is:
x = 5 * 0.84 + 78
x = 82.2 (ANSWER)
How do you Solve by factoring
Answers
(x^2+3x+3x+9)=8
x^2+6x+9=8
Final answer:
To solve an equation by factoring, find the factors, set them equal to zero, and solve for the variable.
Explanation:
To solve an equation by factoring, you need to find the factors of the equation and set each factor equal to zero. Then, solve each equation separately to find the values of the unknown variable. Let's take an example:
If we have the equation [tex]x^2 - 5x + 6 = 0[/tex]:
Factor the quadratic expression: (x - 2)(x - 3) = 0Set each factor equal to zero and solve: x - 2 = 0 and x - 3 = 0solve each equation separately to find the values of x: x = 2 and x = 3This method of factoring and setting each factor equal to zero is a systematic approach to solving quadratic equations, providing a structured way to identify the solutions for the unknown variable. The application of this technique is fundamental in algebra, enabling the efficient determination of roots in quadratic expressions and contributing to a comprehensive understanding of solving equations.
Which shape has the same volume as the given rectangular prism?
Thank you!
Answers
This is because:
Volume of a Rectangular Prism = (Area of base * Height)
= 50 *5 = 250 cm^3
And volume of cylinder = πr^2h = 50*5 = 250cm^3
Thus, the cylinder has the same volume as the rectangular prism
Answer:
The correct option is (A) i.e. cylinder.
Step-by-step explanation:NET BANGERZ
One day, a person went to a horse racing area. instead of counting the number of humans and horses, he counted 72 heads and 192 legs. how many humans and horses were there?
Answers
h+a= 72
2h+4a=192
then do h=72-a
substitute that into the second equation
2(72-a)+4a=192
multiple out
144-2a+4a=192
2a=48
a=24
substitute a into the first equation
h+24=72
h=48
humans- 48
horses- 24
George uses the diagram below to help determine 30% of 60. Which expression could George have used?
Answers
Answer:
[tex]\frac{3}{10}\times 60\text{ or }\frac{30}{100}\times 60[/tex]
Step-by-step explanation:
Given expression,
30% of 60,
We know that,
Convert percentage to fraction :
[tex]a\% =\frac{a}{100}[/tex]
Thus,
[tex]30\% = \frac{30}{100}=\frac{3}{10}[/tex]
So, 30% of 60 = [tex]\frac{3}{10}\times 60[/tex]
Which is the required expression.
If y varies directly as x, and y = 12 when x = 15, find x when y = 21.
Answers
sub y=12, x=15
12=15k
k=12/15
hence, y=(12/15)x
sub y=21,
(12/15)x=21
x=21÷12/15=26.25
should be right..
Ezekiel was having a pizza party, so he bought 7 pizzas, each with 8 slices. Unfortunately, word of his party got out, and the party got out of control. Now, Ezekiel is trying to figure out how many people showed up. If he assumes that on average each person ate 3 1/2 slices, and if all the pizza was eaten, how many people would Ezekiel guess showed up?
Answers
3.5 slices eaten= 1 person
56/3.5= 16 people
Ezekiel would guess that 16 people showed up to his party.
(This is elementary school math:)
What is the answer to H(x)=8x-10
Answers
State how many imaginary and real zeros the function has. f(x) = x3 + 5x2 - 28x - 32
Answers
All equation has always
even numbers of imaginary roots because they always come in pairs. Therefore
there must be either 2 imaginary roots, or zero.
To determine the types of roots, we could try synthetic
division by some of the factors of the number -32. The simplest factors are +1
or -1. Using this, we can quickly show that (x + 1) is a factor, and leaving
(x² + 4x - 32) as the remainder. This remainder equation then factorises to (x
- 4) (x + 8).
So to conclude there are three real zeros which are:
x = -1
x = 4
x = -8
You and your friend are buying throw blankets with your names embroidered on them.The cost of the throw blanket is x dollars and the cost of each embroidered letter is y dollars.Your name has 6 letters and the total cost is $29.Your friend’s name has 3 letters and the total cost is $24.50.Find the cost of the throw blanket and the cost of each embroidered letter.
Answers
The cost of each letter is $1.50
Answer:
Throw Blanket : $20
Embroidered Letter: $1.50
Step-by-step explanation:
Create a set of equations to solve this problem, where x is cost of throw blanket and y is cost of single embroidered letter.
My name:
[tex]x+6y=29\\x=29-6y[/tex]
Friend's name:
[tex]x+3y=24[/tex]
Substituting x into friend's name equation:
[tex](29-6y)+3y=24.5\\3y-6y=24.5-29\\-3y=-4.5\\y=1.5[/tex]
Substituting y into equation for x:
[tex]x=29-6(1.5)\\x=29-9\\x=20[/tex]
Delia uses 3.5skeins of yard to knit one scarf how many scarves can she completed if she has 19skeins of yarn
Answers
Round down (because there aren’t enough skeins to make another complete scarf) and you get 5.
5 scarves
1 scarf= 3.5 skeins
? scarf= 19skiens
So,
19/3.5= 5.428571429 skeins
So the answer is 5
Hope this helps:))
~Top
For what values of x is the following inequality true? 5/7 + x/7 >(underlined) 10. PLZ HELP!!! 12 points
Answers
So here what we are going to do is solve for X.
Step 1: Simplify x/7
Equation at the end of step 1: 5/7 + x/7 - 10 > 0
Step 2: Simplify 5/7
Equation at the end of step 2:
5/7 + x/7 - 10 > 0
Step 3: Adding fractions which have a common denominator:
3.1 Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
5 + x / 7 = x + 5 / 7
Equation at the end of step 3:
(x + 5) / 7 - 10 > 0
Step 4: Rewriting the whole as an Equivalent Fraction:
4.1 Subtracting a whole from a fraction
Rewrite the whole as a fraction using 7 as the denominator:
10 = 10 / 1 = 10 * 7 / 7
Equivalent fraction: The fraction thus generated looks different but has the same value as the whole
Common denominator: The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
4.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
(x+5) - (10 * 7) / 7 = x - 65 / 7
Equation at the end of step 4:
x - 65 / 7 > 0
Step 5: 5.1 Multiply both sides by 7
Solve Basic Inequality:5.2 Add 65 to both sides
x > 65
Final answer: x > 65
simplify
3√45
a)5√15
b)9√5
c)15√9
Answers
How do you rank an answer the brainliest? Really would like to know.
Answers
Hope this helps!
hope this helps
Find the value of y.
–2y + 16 + 6y = 44
a. 15
b. 7
c. 3.5
d. –6
Answers
GIVEN EQUATION:- –2y + 16 + 6y = 44
➡️4y = 44-16
➡️4y = 28
➡️y = 28 / 4
➡️y = 7
So the correct answer is (b.) 7
HOPE IT HELPED YOU.
What is the solution to 2h+8>3h-6
Answers
-2h +6 -2h +6
6>h
solve
4x + 6 = 38
A. 144
B. 11
C. 8
D. 3.5
Answers
minus 6 from both side
4x = 32
divide by 4 to get x
x = 8
The answer is C. 8
A recipe for guacamole uses 12% lime juice. if a batch contains 0.75 cup of kime juice, how large is the batch of guacamole
Answers
the batch is 6.25 cups
What does the y intercept mean
Answers
A company has found that its supply function is equal to the square of the price of their product, all divided by three. The market for its products is also related to price. demand is a basic 920 units minus thirty times price, minus a quarter of the square of the price. What is the ideal price of their product, to make sure that there is neither a surplus nor a shortage? How many units will they sell at this price?
Answers
i.e. [tex]Q_s=\frac{p^2}{3}[/tex]
and the demand is a basic 920 units minus thirty times price, minus a quarter of the square of the price,
i.e. [tex]Q_d=920-30p- \frac{1}{4} p^2[/tex]
The ideal price of their product, to make sure that there is neither a surplus nor a shortage is the equilibrium price which is the price when supply equals demand.
i.e.
[tex]Q_s=Q_d \\ \\ \Rightarrow\frac{p^2}{3}=920-30p- \frac{1}{4} p^2 \\ \\ \Rightarrow \frac{7}{12} p^2+30p-920=0 \\ \\ \Rightarrow p= \frac{-30\pm\sqrt{30^2-4(\frac{7}{12})(-920)}}{2(\frac{7}{12})} \\ \\ =\frac{-30\pm\sqrt{900+\frac{6440}{3}}}{\frac{7}{6}}=\frac{-30\pm\sqrt{\frac{9140}{3}}}{1.1667} \\ \\ =\frac{-30\pm55.1966}{1.1667}= \frac{25.1966}{1.1667} =21.60[/tex]
Therefore, the ideal price of their product, to make sure that there is neither a surplus nor a shortage is $21.60
The number of units they will sell at this price is given by
[tex]Q= \frac{(21.60)^2}{3} \\ \\ = \frac{466.43}{3} \approx155\ units[/tex]
John's gas tank is 16 full. after he buys 5 gallons of gas, it is 12 full. how many gallons can john's tank hold?
Answers
Jerry has 64 cupcakes. Jane has 5 more cupcakes. How many cupcakes does Jane and Jerry have together?
Answers
69 + 64 = 133 cupcakes
In the figure, AB||CB. If CD:BA = 6:5 and the area of CED is 288, find the area of BEA
Answers
5b1:6b2
5h1:6b2
Area of large triangle:
1/2 bh = 1/2 (6)6x = 288
18x = 288
x = 16 = ratio factor to be applied to smaller
So now the small triangle is:
1/2 (5)(5x) = (25/2)x = (25/2)(16) = 25×8 = 200
Answer:
The area of BEA is 200 square units.
Step-by-step explanation:
Given information: AB||CD and CD:BA = 6:5.
Let the length of sides CD and BA are 6x and 5x respectively.
If a transversal line intersect two parallel lines, then the alternative interior angles are equal.
[tex]\angle EAB=\angle EDC[/tex] (Alternate interior angles)
[tex]\angle EBA=\angle ECD[/tex] (Alternate interior angles)
[tex]\angle AEB=\angle DEC[/tex] (Vertically opposite angles)
By AAA property of similarity,
[tex]\triangle ABE\sim \triangle DEC[/tex]
The area of two similar triangles is proportional to the square of their corresponding sides.
[tex]\frac{Area(CED)}{Area(BEA)}=\frac{CD^2}{BA^2}[/tex]
[tex]\frac{288}{Area(BEA)}=\frac{(6x)^2}{(5x)^2}[/tex]
[tex]\frac{288}{Area(BEA)}=\frac{36x^2}{25x^2}[/tex]
[tex]\frac{288}{Area(BEA)}=\frac{36}{25}[/tex]
[tex]288\times 25=36\times Area(BEA)[/tex]
[tex]7200=36\times Area(BEA)[/tex]
Divide both sides by 36.
[tex]200=Area(BEA)[/tex]
Therefore the area of BEA is 200 square units.
Which of the binomials below is a factor of this trinomial?
x2 - 10x + 24
A. x + 4
B. x - 3
C. x - 4
D. x + 3
Answers
(X-4)(X-6)
Answer:
Option (c) is correct.
(x-4) is a factor of given trinomial.
Step-by-step explanation:
Consider the give trinomial [tex]x^2-10x+24[/tex]
We have to find the factors of given binomial and choose the correct one from the given options.
Consider the given polynomial [tex]x^2-10x+24[/tex]
We will simplify the given quadratic equation using middle term split method,
-10x can be written as -4x-6x
Such that the product of term will give the product of the remaning terms,
Thus, the given trinomial becomes,
[tex]x^2-4x-6x+24[/tex]
Taking x common from first two terms and -6 common from last two terms, we have,
[tex]x(x-4)-6(x-4)[/tex]
Thus, take (x-4) common , we have,
[tex](x-4)(x-6)[/tex]
Thus, out of given factors (x-4) is a factor of given trinomial.
HELP! CONFUSED ON WHAT TO DO!
Marathon Training
Amanda and Kevin are training for a marathon. To prepare for this marathon they have been training and tracking their progress periodically. In the first week of training Kevin ran an average of 9.00 minutes per mile. Later, in week five of training he ran an average of 6.50 minutes per mile. In the first week of training Amanda ran an average of 10.00 minutes per mile. Later, in week seven of training she ran an average of 5.00 minutes per mile. Assuming that Kevin and Amanda continue to train and improve their times at the same rate your task is to determine which week they will have the same average minutes per mile. We will assume that the relationship is linear as they will be training for a maximum of 10 weeks. To complete this task follow the steps below.
1. Determine the equation of a line in standard form that represents Kevin’s training progress. His progress corresponds to the points (1, 9.00) and (5, 6.50). 2. Determine the equation of a line in standard form that represents Amanda’s training progress. Her progress corresponds to the points (1, 10.00) and (7, 5.00) 3. Solve the system of equations (showing work would be awesome!)
4. In which week will Kevin and Amanda have the same average minutes per mile?
5. If Kevin and Amanda continue to train until week 16, what will their times be? 6. Do you believe a linear model best represents the relationship of the time of the runners and the weeks that passed?(Hint: look at question 5). What do you think this says about problems in the real world? Justify your thoughts in 3-4 sentences.
Sorry it's this long, but please, I really don't know where to start or what to use to solve! I really need the help to understand. If you can't answer all, it's OK, but at least 2 or more would be great, so that way, I'll know to where to start!
Answers
The length of a rectangle is the square root of 100 times an unknown number, x. The width is one-half an unknown number, y, less three-halves x. If the area of the rectangle is 125 cm2, find an equation that would give the width of the rectangle given the length.
Answers
L = √100 * x = 10x
W = 1/2*y - 3/2*x
Since A is equal to length times width
A = LW
If L is given, we can find the x. Therefore, we must set the equation where the dependent variable is y and the independent variable is x.
125 = LW
W = 125/L
1/2*y - 3/2*x = 125/10x
10x(1/2*y - 3/2*x) = 125
5xy - 15x² = 125
xy - 3x² = 25
y = (25+3x²)/x
y = 25/x + 3x
multiply (2.1 x 10^3) x (3.5 x 10^2)
A. 7.35 x 10^5
B. 3.6 10^1
C. 6.9 x 10^3
D. 2.83 x 10^2
Answers
You multiply 2.1 by 3.5 and you add the exponents which are 3 and 2.
Hope this helps!
Which of the following is a radical equation?
Answers
So D.
Answer:
Option D. 7√x = 14
Step-by-step explanation:
By definition radical equation is an equation in which a variable is under radical.
Now we see the options given only in option D. x is variable under radical.
Therefore, 7√x = 14 is the radical equation.
Hence Option D. is the correct option.
Coach Stevens needs to purchase sprinklers to water the baseball field. The standard distance between bases is 90 feet and the infield is a perfect square.
Coach Stevens found one sprinkler that sprays a maximum distance of 50 feet.
If Coach Stevens placed the sprinkler on the pitcher's mound, would the water spray so that the entire infield was watered? Justify your response.
Answers
Answer:
So, if coach Stevens places as sprinkler of maximum distance 50 ft, he won't be able to cover the entire infield.
Step-by-step explanation:
Consider the infield as a polygon ABCDE.
It is given that each side AB, BC, CD, and DA is of length 90ft. It is also given that the infield is a perfect square.
Thus, the area of the square ABCD = 8100 ft.
Now consider the triangle BCD. Because of symmetry, the area of this triangle equals half the area of the square. Again, because of symmetry, the length of the base BD equals twice the length of the height EC.
Thus from to the formula of area of the triangle:
base × height = 4050 base × height = 8100 2(height) × height= 8100 height63.64 ft