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KonstantinChe [14]
3 years ago
7

Please help me! this is timed!

Mathematics
1 answer:
givi [52]3 years ago
4 0

Answer:

Step-by-step explanation:

1. f(-2) = 6 * 1/3^-2

f(-2) = 6 * 9

f(-2)  = 54

2. y = -3 * 4^3

y = -3 x 64

y = -192

3. f(4) = 1/4 * 2^4

f(4) = 1/4 * 16

f(4) = 4

Let me know if I am right!

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There are x number of students at helms. If the number of students increases by 7.8% each year, how many students will be there
vodomira [7]

There will be 1.078x students next year and equation is number of students in next year = x + 7.8% of x

<h3><u>Solution:</u></h3>

Given, There are "x" number of students at helms.  

The number of students increases by 7.8% each year which means if there "x" number of students in present year, then the number of students in next year will be x + 7.8% of x

Number of students in next year = number of students in present year + increased number of students.

\begin{array}{l}{\text { Number of students in next year }=x+7.8 \% \text { of } x} \\\\ {\text { Number of students in next year }=x\left(1+\frac{7.8}{100}\right)} \\\\ {\text { Number of students in next year }=x(1+0.078)=1.078 x}\end{array}

Thus there will be 1.078x students in next year

3 0
4 years ago
The circumference (C) of a swimming pool is 47 feet. Which formula can you use to find the radius (r) if you know that C = 2 π π
Troyanec [42]
47 = 2 pi r
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6 0
4 years ago
Penny gets paid $12 per hour to work at the coffee shop: The amount of money she earns depends on the number of hours she works.
prisoha [69]

Answer:

B- The dependent variable is the amount of money she earns, and the independent variable is the number of hours she works.

Step-by-step explanation:

The amount of money she earns depends on how many hours she works, making that the dependant variable.

6 0
3 years ago
Sue is two years older than chris. jim is 4 years older than sue. their ages total 68. how old is sue
zzz [600]
We will start with Chris's age, since Sue is older than him and Jim is older than Sue.  Chris is the youngest. We will say Chris's age is x.  If Sue is 2 years older than Chris, Sue is x + 2.  Jim is 4 years older than Sue, so Jim is 4 + x + 2, or x + 6.  The total of their ages is 68, so x + x + 2 + x + 6 = 68.  Simplifying we have 3x + 8 = 68.  3x = 60, so x = 20. Chris is 20, Sue is 22, and Jim is 26.  Those numbers do in fact total 68. 
4 0
3 years ago
Solve for x and y 4x-3y=14,6x +y=-10​
Anna [14]

Answer:

y= -8/11   x=-63/11

Step-by-step explanation:

Rewrite equation

Step: Solve6x+y=−10for y

Step: Substitute−6x−10 for y in 4x−3y=14

Step: Substitute  −8 /11  for x in y=−6x−10

y= −62 /11  --- (Simplify both sides of the equation)

___________________________________________

y= -8/11

x=-63/11

7 0
3 years ago
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