7. Choose the correct answer. If there is direct variation and y= 27 when t= 4, find y when = 12.

a. 9

b. 0.56

c. 81

d. 1.78​

Answers

Answer 1

Answer:

c

Step-by-step explanation:

Given direct variation between y and t , then the equation relating them is

y = kt ← k is the constant of variation

To find k use the condition y = 27 when t = 4 , then

27 = 4k ( divide both sides by 4 )

6.75 = k

y = 6.75t ← equation of variation

When t = 12 , then

y = 6.75 × 12 = 81


Related Questions

Use the graphical representation and algebraic reasoning to identify the key features of the graph of the function
g(x) = -f(x) + 10.
Select all the correct answers.
horizontal asymptote of y = 0
range of {y 0 < y < 00}
range of {y-oo < y < 10}
no x-intercept
y-intercept at (0,9)
horizontal asymptote of y = 10
x-intercept at (1,0)
increasing y-values

Answers

Answer:

4 answers to this question

Step-by-step explanation:

4 Answers: (#s 3, 5, 6, 7)

y-intercept at (0,9)

horizontal asymptote of y=10

x-intercept at (1,0)

range of {y|-∞<y<10}

if the perimeter of a rectangle is 124cm & the width is 35cm, what is the length?

Answers

Answer:

l=27

b=2×35=70

2l=124-70=54

l=54/2=27

find the cube root of 1728

Answers

Answer:

12

Step-by-step explanation:

simple math.

Answer:

it is 12

I don't know how to type the process

please help i don’t understand

Answers

Step-by-step explanation:

a) given slope=m1=a/3

slope of parallel line=m2=5/6

parallel lines have equal slopes:

m1=m2

a/3=5/6

a=5/6×3

a=5/2

b) m1=a/3

m2=-2/9

lines are parallel:

m1=m2

a/3=-2/9

a=-2/9×3

a=-2/3

c)m1=a/3

m2=6

Slopes are perpendicular:

m1×m2=-1

a/3×6=-1

a×2=-1

a=-1/2

d)m1=a/3

m2=6/7

lines are perpendicular:

m1×m2=-1

a/3×6/7=-1

a×2/7=-1

a=-7/2

Note:if you need to ask any question please let me know.

A bag has 6 watermelon, 5 grape and 1 green apple jolly rancher. . What is the probability of picking a
watermelon, put it back then green apple?

Answers

Answer:

1/24

Step-by-step explanation:

We want to find the probability of picking a watermelon AND picking a green apple right after. These events are completely independent of each other as the watermelon is put back, and picking a watermelon/green apple does not affect the chances of getting the other the next/previous time. The formula for this is P(A) * P(B), with P(A) being the probability of event A happening and P(B) being the probability of event B happening. It does not matter which event is which.

Let's say picking a watermelon is event A and picking a green apple is event B.  There are 6 watermelons and 6+5+1 = 12 jolly ranchers, so there is a 6/12 = 1/2 chance of picking a watermelon. There is 1 green apple and still 12 jolly ranchers, so there is a 1/12 chance of picking a green apple jolly rancher.

Multiplying these two, we get (1/2) * (1/12) = 1/24

If a is a negative number and ab is a positive number, then:
(A) b is positive
(B) b is negative
(C) a is greater than b
(D) b is greater than a
(E) b may be zero

Answers

Answer is B , negative Times negative is always a positive product.
B, negative times a positive is always negative

Simplify the following expression

Answers

Answer:

A.( 3m+28)/4

Step-by-step explanation:

So basically since it is addition we just add 9 to -2 to get 7. So then the equation becomes (3m/4)+7. Then we will multiply 7 by 4 to get common denominator so it will be (3m+(7*4))/4 which is (3m+28)/4.

Simplify (7^5)^6 writes your answer an exponent.

Answers

Answer:

2.25393402⋅10^25 i'm pretty sure lovely <3

c divided by the sum of 10 and 7

Answers

Answer:

The answer would be c/17

Step-by-step explanation:

You would have to add 10 and 7 to get the sum. Then just divide whatever c is by 17.


this is a one step equation pls help

Answers

Answer:

$58

Step-by-step explanation:

James needs $125 total but needs $67 more for it.

You can find how much he has by doing 125 - 67 = 58

Find the area for a trapezoid 9.85 m 15 m 11 m 9 m

Answers

Answer:

total area = 99m² + 39.4m²

= 138.4m²

The illustration below shows the graph of y as a function of a.
Complete the following sentences based on the graph of the function.
• This is the graph of a
function.
• The y-intercept of the graph is the function value y =
• The smallest positive x-intercept of the graph is located at 25
• The greatest value of y is y =
7T
• For x between 2 = - and 3 =- the function value y
2
0.
V
y
2.5+
2+
1.5+
1+
0.5
2
3T
77
2 -0.5 |

Answers

Answer:

Step-by-step explanation:

Please help I don’t know

Answers

Answer:

k = 16/3

Step-by-step explanation:

Start by calculating the difference on the left side.

1/4k - 4 + 5/4k = 3/8k + 2

Multiply both sides of the equation by 8

2k - 32 + 10k = 3k + 16

Calculate sum on left side

12k - 32 = 3k + 16

Subtract 3k and add 32 to both sides

9k = 48

Divide both sides by 9

k = 48/9 = 16/3

HELP ILL GIVE BRAINLIEST QUICK!!

Answers

Answer:

Dan is correct

Step-by-step explanation:

First, I calculated the amount of hours that the graph shows in total, coming up with a total of 3,085 hours. I do this by multiplying the number of adults surveyed by the number of hours they spent. So for the first column, (80+70)*1, second column, (90+80)*2, third column, (135+130)*3, fourth column, (140+135)*4, and fifth column, (65+75)*5 if you get what I mean. Then I add up all values. Knowing that there were two sets of 500 American adults interviewed already, I came to the conclusion that 1,000 total adults were surveyed. Finally, I divided the total number of hours(3,085) by the total number of adults interviewed (1,000) to get a mean of 3.085 hours, rounding it to 3 hours and proving that Dan is correct.

Given the equation.
f(x)=x^3+3x
Solve for x.

Answers

Answer:

x=0

Step-by-step explanation:

I think solve for x is just finding the zero or root of the equation?

Drag the numbers below to put them in order from least to greatest:
2.2 2.276 2.291 2.14
2.26 2.221

Answers

Answer:

The numbers in order from the least to greatest are

2.291      2.276      2.221        2.26        2.14        2.2  

Step-by-step explanation:\

Just like fractions, decimals are worth less the more there is...

1 . what is the surface area of a cube with a side length of 1/2 inches ??

2 . find the slope of a line that passes through the points (-2,-6) and (1,4)

please help it’s due tomorrow

Answers

Answer:

2. you can use the formula y2-y1/x2-x1

4-(-6)/1-(-2) = 10/3

The sum of a number and it's absolute value is negative.

Answers

Answer:

False; the scenario is not possible.

Step-by-step explanation:

This scenario is not possible. I will demonstrate it by representing a number by [tex]x[/tex]. There are two possibilities: [tex]x[/tex] and [tex]-x[/tex]. Let's try both:

[tex]x + |x|[/tex]

[tex]x + x[/tex]

[tex]2x[/tex]

The sum for positive [tex]x[/tex] and its absolute value is not negative. Let's try with the negative value of [tex]x[/tex] now:

[tex]-x +|-x|[/tex]

[tex]-x + x[/tex]

[tex]0[/tex]

The sum for negative [tex]x[/tex] and its absolute value is not negative either, it is zero which is neither negative or positive. Therefor, we can safely say that the scenario described is not possible.

please help....can any one solve it​

Answers

Answer:

plz mark me as a brainlist

Step-by-step explanation:

Using the formulas of the area of a quadrilateral, the area (A) of the given kite is, A = (1/2) × d1 × d2 = (1/2) × 18 × 15 = 135 square units

If four coordinates are given then:-

Find length of the sides using distance formula

[tex]\boxed{\sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}[/tex]

Now break down into two triangles .

Use herons formula and find areas of the triangles .add them and get the area

Divide 5 ¾ and 1 ½ help pls!!!

Answers

First convert the mixed fractions into improper fractions

5 3/4 = 23/4
1 1/2 = 3/2

23/4 divided by 3/2
= 23/4 * 2/3
= 46 / 12
= 3.833

Order the integers from least to greastest 5,-6,12,-1,-7,0,8

Answers

Answer:

-7,-6,-1,0,5,,8,12

Answer:

[tex]{ \sf{ \{ - 7 \: » \: - 6 \: » - 1 \: » \: 0 \: » \: 5 \: » \: 8 » 12\}}}[/tex]

ab+0=ab is what type of property

Answers

The Zero Property of Addition

Which of the following represents the sum of
(x2 - 7x + 6) + (x2 + 6x)
Ox? - x + 6
2x2 - 7x + 12
1 2x² - x + 6
x2 - 7x + 12

Answers

Answer:

Solution given:

(x²-7x+6)+(x²+6x)

open bracket

x²-7x+6+x²+6x

keep like terms together

x²+x²-7x+6x+6

solve like terms

2x²-x+6

option 3rd

2x² - x + 6

\\ thank \: you[/tex]

I hope this helps you

What should I do when I’m tired and I have homework assignments to do?

Answers

Answer:

wake yourself up with a short activity, or drink something to energize you, put on some good music, or something else you can do to motivate yourself (as long as it`s a healthy method)

PLEASE HELP, I UNDERSTAND BUT DONT UNDERSTAND

Answers

Answer:

(7/12) + (4q/6)

Step-by-step explanation:

[tex] \frac{11}{12} - \frac{1}{6} q + \frac{5}{6} q - \frac{1}{3} \\ = \frac{11}{12} + \frac{4}{6} q - \frac{1}{3} \\ = \frac{11}{12} - \frac{1}{3} + \frac{4}{6} q \\ = \frac{11}{12} - \frac{4}{12} + \frac{4}{6} q \\ = \frac{7}{12} + \frac{4}{6} q[/tex]

Answer:

Step-by-step explanation:

Like terms have same variable with same power.

(11/12  and 1/3 are like terms)  & (-1q/6 & 5q/6 are like terms}

[tex]\dfrac{11}{12}-\dfrac{1}{6}q+\dfrac{5}{6}q-\dfrac{1}{3}=(\dfrac{11}{12}-\dfrac{1}{3})-\dfrac{1}{6}q+\dfrac{5}{6}q\\\\=(\dfrac{11}{12}-\dfrac{1*4}{3*4})+[\dfrac{-1+5}{6}]q\\\\=(\dfrac{11}{12}-\dfrac{4}{12})+\dfrac{4}{6}q\\\\=\dfrac{(11-4)}{12}q+\dfrac{4}{6}q\\\\=\dfrac{7}{12}+\dfrac{4}{6}q[/tex]

Mike won 59 super bouncy balls playing
hoops at his school's game night. Later,
he gave four to each of his friends. He
only has 7 remaining. How many friends
does he have?

Answers

Answer:

13 friends

59-7=52(to find the number of balls that Mike gave to his friends if he gave them only one ball each)

52/4 =13(if 52 is the number of balls that he gave them if he gave them one each, if he gives them four balls each all you have to do is to divide it by 4)

Find
Answers
80
170
100
10

Answers

Answer:

answer ..... 80. Is,it true ??

A rectangle measuring 7 cm by 4 cm is enlarged by a ratio
of 2:1.
a) What is the area of:
i) the original rectangle?
ii) the enlarged rectangle?
b) By what ratio has the area been enlarged?

Answers

Answer:

plz mark me a brainst plz plz pl plz plz plz pzlz

Can any one tell me this i have to do this for my tomorrow school

Answers

Answer:

Step-by-step explanation:

5068300- five million, sixty-eight thousand, three hundred

472607- four hundred seventy-two thousand, six hundred seven

51325678- fifty-one million three hundred twenty-five thousand six hundred eighty-seven

Thomas has 3 boxes, each with 8 balls.
He wants to place the balls evenly into 4 boxes.

How many balls will be in each of the 4 boxes?

Answers

Answer: 6 balls will be in each of the 4 boxes.

Step-by-step explanation:

Multiply 3x8 to find out how many balls there are total.

3x8=24

Then to split them evenly, you divide by 4 (the amount of boxes they are split into)

24/4= 6

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