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N76 [4]
3 years ago
10

Solve this please!!!

Mathematics
1 answer:
Pani-rosa [81]3 years ago
5 0
I attached a couple below pictures with all the work and a bit more information to help you understand the problem.
I hope this helps! If you have any questions, just comment them below :)

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It is believed that as many as 25% of adults over 50 never graduated from high school.We wish to see if this percentage is the s
leva [86]

Answer:

n=141

Step-by-step explanation:

I hope it help.

6 0
3 years ago
The distance covered<br>by a car in<br>3x hours is<br>27x3_9x²+3x. Find the rate of the car​
Finger [1]

Answer:

<h3>9x²-3x+1</h3>

Step-by-step explanation:

The rate of the change of the car is is its speed.

Speed = distance/time

Given

Distance = 27x³-9x²+3x

Time = 3x hours

Speed =  27x³-9x²+3x/3x

factor out 3x from the numerator:

Speed = 3x(9x²-3x+1)/3x

Speed = 9x²-3x+1

Hence the rate of the car is 9x²-3x+1

7 0
4 years ago
Stella wants to build up her emergency fund to $10,000. She has $2,000 now and plans on saving $320 every month. To model the si
MA_775_DIABLO [31]

Answer:

Anwers are top to bottom:

1.   y − 2,000 = 2,000 + 320x − 2,000

2.  division property of equality

3.    Y - 2000/320 = X

4.  10,000 - 2,000/360 = 25 = x

Step-by-step explanation:

7 0
3 years ago
In a stationery design, the number of ovals is proportional to the number
kondor19780726 [428]

Answer:

75 ÷k number of squares based on the k value

Step-by-step explanation:

Let us suppose the ovals number be x

And, the square number be y

Now in the case when the ovals number is proportional to the square number

So, it would be defined as

x∝y

And,  

x = ky

Here k is the constant

Now  

If there are 75 ovals,

So, x = 75

Now put this in the above equation  

75 = kx

x = 75 ÷k

8 0
3 years ago
What is the answer to this question? Twice r is 20
Allushta [10]

Answer:

2r = 20

So, r = 10

Step-by-step explanation:

5 0
3 years ago
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