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AlekseyPX
3 years ago
14

Using the rules of exponents to evaluate or simplify. write without negative exponents. 1/4^-2​

Mathematics
1 answer:
jekas [21]3 years ago
3 0
16 or 4^2

This is really saying is 1/(1/4^2)
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(5x+3)(7x-7) how do find x
Delvig [45]

We can use the FOIL method to solve.

(5x + 3)(7x - 7)

(5x * 7x) + (5x * -7) + (3 * 7x) + (3 * -7)

35x - 35x + 21x - 21

0 + 0

0

Best of Luck!

6 0
3 years ago
Tim is investigating the relationship between the number of years since a tree was planted and the height of the tree in feet. H
wolverine [178]

Answer: There is not a good prediction for the height of the tree when it is 100 years old because the prediction given by the trend line produced by the regression calculator probably is not valid that far in the future.

Step-by-step explanation:

Years since tree was planted (x) - - - - height (y)

2 - - - - 17

3 - - - - 25

5 - - - 42

6 - - - - 47

7 - - - 54

9 - - - 69

Using a regression calculator :

The height of tree can be modeled by the equation : ŷ = 7.36X + 3.08

With y being the predicted variable; 7.36 being the slope and 3.08 as the intercept.

X is the independent variable which is used in calculating the value of y.

Predicted height when years since tree was planted(x) = 100

ŷ = 7.36X + 3.08

ŷ = 7.36(100) + 3.08

y = 736 + 3.08

y = 739.08

Forward prediction of 100 years produced by the trendline would probably give an invalid value because the trendline only models a range of 9 years prediction. However, a linear regression equation isn't the best for making prediction that far in into the future.

3 0
3 years ago
Put these number from least greatest 1117 1465 513 437 1038 954 650 893 456 1018
Juli2301 [7.4K]
437-456-513-650-893-954-1018-1038-1117-1465
3 0
3 years ago
Read 2 more answers
Tom has 2 feet of wire. He uses of the wire to hang a picture. How much wire did he use to hang the picture?
Ipatiy [6.2K]

Answer:

D.  1  1/2 feet

Step-by-step explanation:

<u>Multiply the numbers to find the length of wire used.</u>

  • 2 1/2 × 3/5 =
  • 5/2 × 3/5 =
  • 3/2 =
  • 1 1/2 feet

Correct choice is D

3 0
2 years ago
Time = 8 years
Sedaia [141]
B)1,131.20 would be the answer. 1010x0.14=141.4x8=B                                                                        
 
7 0
3 years ago
Read 2 more answers
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