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mezya [45]
3 years ago
8

Simplify the expression: (12x+3) - (3x-5)

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0
12x+3-3x+5
Combine like terms
Answer = 9x+8
Alenkinab [10]3 years ago
7 0
You subtract the 12 and 3 and then add the 3+5 and you get 9x+8
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If the mean of 5 positive integers is 15, what is the maximum possible difference between the largest and the smallest of these
Vikki [24]

Answer:

if the 5 numbers are different, the maximum difference is 64

Step-by-step explanation:

We have 5 positive (different) integers, a, b, c, d and e (suppose that are ordered from least to largest, so a is the smallest and b is the largest.

The mean will be:

M = (a + b + c + d + e)/5 = 15.

Now, if we want to find the largest difference between a and e, then we must first select the first 4 numbers as the smallest numbers possible, this is:

a = 1, b = 2, c = 3 and d = 4

M = (1 + 2 + 3 + 4 + d)/5 = 15

M = (10 + d)/5 = 15

10 + d = 15*5 = 75

d = 75 - 10 = 65

then the difference between a and d is = 65 - 1 = 64.

Now, if we take any of the first 4 numbers a little bit bigger, then we will see that the value of d must be smaller, and the difference between d and a will be smaller.

5 0
3 years ago
The potential energy, P, in a spring is represented using the formula P = 1/2kx2. Lupe uses an equivalent equation, which is sol
sukhopar [10]

Answer:

k=\frac{2P}{x^2}


Step-by-step explanation:

The formula is P=\frac{1}{2}kx^2

<em>We need to solve for k, so we can perform the steps shown below:</em>

P=\frac{1}{2}kx^2\\P=\frac{kx^2}{2}\\2P=kx^2\\\frac{2P}{x^2}=k


Hence, the third answer choice is correct.

7 0
3 years ago
Read 2 more answers
12a = 4 what is a HELP ME PLZ
lisabon 2012 [21]
Answer: 3

3x4 is 12

Hope this helps!
4 0
3 years ago
Read 2 more answers
Leanne earned $400 and $550 in interest the last 2 years. How much interest must she earn this year so that her average earnings
polet [3.4K]

Answer:

850

Step-by-step explanation:

400+550+850=1800. 1800/3= 600

3 0
3 years ago
9/11 = ?/22<br> a. 12<br> b. 9<br> c. 4<br> d. 18
svlad2 [7]
18/22 = 2*9/2*11 = 9/11

Therefore, your answer is 18
7 0
3 years ago
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