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alexira [117]
3 years ago
9

Mrs. McKee is thinking of buying solar panels to put on the roof of her new house the sunny solar company told her that for ever

y two panels she was safe $80 on her electric bill make a table of the panels to the money that she will save on her electric bill
Mathematics
1 answer:
Cloud [144]3 years ago
5 0
I can’t solve this because there is not enough information
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How do the arrows for +1 and -1 show both distance and direction?
Fofino [41]
By the way the arrow is pointing?
3 0
4 years ago
Evaluate the function f (x)  4 • 7x for x  1 and x = 2. Show your work
SashulF [63]
The function and the first value stated for x are confusing.

Doing some research, I found that the problem is to evaluate the function   f(x)=4.7^x    for x = - 1 and x  2.

The solution is:

1) For x = - 1

f(-1)=4. 7^{-1} =4. (1/7)=4/7

2) For x = 2

f(2)=4.7^2=4(49)=196
5 0
3 years ago
Please help with best explained answer
KIM [24]

Answer:

x =  25        B = 65˙       C = 50˙

Step-by-step explanation:

Triangle Sum- All three angles in a triangle add up to 180˙

65 + (3x - 10) + (2x) = 180

65 - 10 +3x + 2x = 180                              Combine like terms

            55 + 5x = 180                               Move the 55 over to combine w/180.  

          <u>- 55            -55   </u>

                     <u>5x</u> = <u>125</u>                               Divide by 5

                      5       5                                

                       x =  25                               Answer

    B                                                   C

(3x - 10)                                           (2x)

(3*25 - 10)                                     (2* 25)

      65˙                                            50˙

8 0
3 years ago
A boot has been designed which can be immersed for 12 hours without leaking. Five hundred pairs of the boots are tested and the
Natali [406]

Answer:

0.0312

Step-by-step explanation:

Given :

Mean or average time, xbar = 12.25

Standard deviation, s = 3

Sample size, n = 500

The test statistic :

(x - xbar) ÷ (s/sqrt(n))

(12 - 12.25) ÷ 3/sqrt(500)

-0.25 ÷ 0.1341640

Test statistic = - 1.863

The Pvalue :

P(Z < - 1.863) = 1 - P(Z ≤ 1.863)

P(Z < - 1.863) = 0.0312

Hence, the Pvalue = 0.0312

7 0
3 years ago
what is the surface area of a square pyramid with base side lengths of 10 inches and a slant height of 14 inches
Pavlova-9 [17]

Answer:

The surface area is 380\ in^{2}  

Step-by-step explanation:

we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

so

SA=b^{2}+4[\frac{1}{2}(b)(l)]

where

b=10\ in

l=14\ in -----> the slant height

substitute the values

SA=10^{2}+4[\frac{1}{2}(10)(14)]

SA=380\ in^{2}    

5 0
3 years ago
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