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makkiz [27]
4 years ago
11

Which expression is equivalent to (82)−4?

Mathematics
1 answer:
horsena [70]4 years ago
4 0
82^{-4}= \cfrac{1}{82^4}
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I just need help with b and c
My name is Ann [436]

Answer:

B. Carl yearns more per hour

C. put line through points (1,15) and 3,45) on graph and you will have Carl's earnings per hr.

Step-by-step explanation:

Louis earns 12$ per hr (y=12x)

Carl yearns 15$ per hr (y=15x)

to find what carl yearns hourly you divide 45 by 3 which is 15.

(Explaination of answer for question b)

C isnt hard once you find y=15x.

8 0
4 years ago
BEST ANSWER GETS BRAINLIEST!!! PLEASE HELP
arlik [135]
Its just 16*16 soo...256
3 0
3 years ago
Read 2 more answers
You are hiking on a trail that leads to the top of a mountain. At 1 P.M. you reach an elevation of 4400 feet. At 4 P.M. you reac
shusha [124]
Let
t = time, hours
h = height, feet

At 1 PM, the time and height are respectively
t₁ = 1  hour
h₁ = 4400 feet

At 4 PM, the time and height are respectively
t₂ = 4 hours
h₂ = 5600 feet

By definition, the mean hourly change in elevation is 
\frac{h_{2} - h_{1}}{t_{2} - t_{1}} = \frac{5600-4400}{4-1} = \frac{1200}{3} =400

Answer: 400 feet per hour
5 0
3 years ago
Read 2 more answers
Harpreet, Sukhpreet and Komalpreet are three sisters. Sukhpreet is x years old. Harpreet is 3 years older than Sukhpreet. Komalp
Ira Lisetskai [31]

Answer:

12

Step-by-step explanation:

Givens

Harpreet        = x + 3

Sukhpreet     = x

Komalpreet   = 2*(x + 3)

Average Age = 15

Equation

[(x + 3) + x + 2*(x + 3) ] / 3 = 15                  Multiply both sides by 3

Solution

3 [(x + 3) + x + 2*(x + 3) ] / 3 = 15 * 3         Combine

 [(x + 3) + x + 2*(x + 3) ]       =   45             Remove the brackets

x + 3 + x + 2x + 6                 =   45             Combine like terms

4x + 9 = 45                                                 Subtract 9 from both sides

4x + 9 - 9 = 45 - 9                                       Combine

4x = 36                                                         Divide by 4

4x/4 = 36/4

x = 9

Answer

Harpreet is  x+ 3 = 9 + 3 = 12

3 0
2 years ago
13 = 2f + 5<br> i don't know how to solve this
TEA [102]
<span>Simplifying 13 = 2f + 5
 Reorder the terms: 13 = 5 + 2f
 Solving 13 = 5 + 2f
 Solving for variable 'f'.
 Move all terms containing f to the left, all other terms to the right.
 Add '-2f' to each side of the equation. 13 + -2f = 5 + 2f + -2f
 Combine like terms: 2f + -2f = 0 13 + -2f = 5 + 0 13 + -2f = 5
 Add '-13' to each side of the equation. 13 + -13 + -2f = 5 + -13
 Combine like terms: 13 + -13 = 0 0 + -2f = 5 + -13 -2f = 5 + -13
 Combine like terms: 5 + -13 = -8 -2f = -8
  Divide each side by '-2'. f = 4
 Simplifying f = 4

SO, f = 4

13 = 2 </span>× 4 + 5<span>

Hope I helped:P</span>
8 0
3 years ago
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