When 70,000 is written as 7.0 10^{n} what is the value of n ? Can you please explain with some details?

Answers

Answer 1

Answer: I believe it's n=-4? It's a negative because the decimal moves to the right 4 times to get 70,000

Answer 2

Answer: $70 000=7\cdot10^4\n \n840000000=8,4\cdot10^8\n \n0,004=4\cdot10^(-3)\n \n0,000000123=1,23\cdot10^(-7)$

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Lily buys a sweater that is on sale for $42, which is 75% of the original price of the sweater. What was the original price of the sweater?

Answers

We have an equation: 42/? = 75/100

Cross multiply:
75*? = 42*100
⇒ ? = 42*100/75= 56

The original price of the sweater was $56.

Hope this helps~

42 dollars is 75% so 25% is 14 and 100% is 56

A ball is thrown into the air from a height of 9cm above the ground, and its height is given by S=128+32t-16t^2, where t is the time in seconds1) find the values of t that makes S=0.
2) Do both of the values of t have meaning for this application? Explain why

Answers

-16t² + 32t + 128 = 0
-16t² + 64t - 32t + 128 = 0
-16t(t - 4) - 32(t - 4)
(-16t - 32)(t - 4) = 0
-16t -32 = 0 t - 4 = 0
-16t = 32 t = 4
t = -2

t = -2 and t = 4 are the values that makes S = 0.
Yes, because if you apply either of these values alone, S will be 0.

Which graph represents the solution to the compound inequality? –2x + 4 ≤ 8 and –2x + 4 > –6FAST on ed

Answers

Answer:

Please look at the attachment for the graph of solution.

Step-by-step explanation:

We have been give two inequalities:

$-2x+4\leq 8$

And $-2x+4>-6$

Solution to the inequality graphically is where the two graphs of the inequalities intersects.

Please look at the attachment shaded area is the region for solution to the inequality.

Answer:

The answer is c

Step-by-step explanation:

did it on ed2020

How to do like terms if needed

Answers

Let me give you an example
6x + 5x + 14 + 6
So all you is combine 6x and 5x
11x +14 + 6
Then you just combine the other two numbers
11x + 20

player B's longest homerun justin is 500 feet there are 5,280 feet in one mile how many homeruns would play Abby need to hit at his longest distance for the total to be greater than 1 mile

Answers

Ok so what you can do is take 5,280 /500feet=10.56
So you will round it to the nearest number. That would be 11.So She would have to run 11 home runs to meat a mile.

Select the correct first step for finding the product of (4x+8)(2x+3) using the foil method

Answers

Answer:

Step-by-step explanation:

F: 4x*2x = 8x^2

O: (4x)*3 = 12x

I : 8*2x = 16x

L: 8*3 = 24

End of First step

========================

Just in case you want the answer

8x^2 + 28x + 24

And to take out the common factor

4(2x^2 + 7x + 6)

Answer:

(4x + 8) (2x+3)

FOIL

First- (4x)(2x)= 8x2

Outer- (4x) (+3)= +12x

Inner- (8) (2x)=16x

Last- (8) (+3)=+24

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