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IRINA_888 [86]
2 years ago
7

Which value of x makes the equation 1.25(4x − 10) = 7.5 true?

Mathematics
1 answer:
lozanna [386]2 years ago
3 0

Answer:

x=4

Step-by-step explanation:

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2. Sammie has 3 feet of ribbon. She is making bows for her friends that each use of 1/3 of a foot
lilavasa [31]

Answer:

Sammy can make 9 bows.

Step-by-step explanation:

3 feet of Ribbon

1/3 for each bow

1/3 + 1/3 +1/3  = 3/3 or 1 so she can make 3 bows out of one foot of ribbon

so if you repeat this than  you should get 9 bows out of three feet of ribbion.

3 0
2 years ago
Find the average rate of change of f(x)=2x-1 from x=-1 to x=2
MrMuchimi

The average rate of change from x = -1 to x = 2 is 2

<u>Solution:</u>

Given function is:

f(x) = 2x - 1

We have to find the average rate of change from x = -1 to x = 2

<em><u>The average rate of change is given as:</u></em>

\text {Average rate of change}=\frac{f(b)-f(a)}{b-a}

<em><u>The average rate of change from x = -1 to x = 2 is given by formula:</u></em>

\text {Average rate of change}=\frac{f(2)-f(-1)}{2-(-1)}\\\\\text {Average rate of change}=\frac{f(2)-f(-1)}{3}

<em><u>Find f(2) and f( - 1)</u></em>

<em><u>Substitute x = 2 in given function</u></em>

f(2) = 2(2) - 1 = 4 - 1 = 3

<em><u>Substitute x = -1 in given function</u></em>

f( - 1) = 2(-1) - 1 = -2 - 1 = -3

<em><u>Substitute the values in above formula,</u></em>

\text {Average rate of change}=\frac{3-(-3)}{3}=\frac{6}{3}=2

Thus average rate of change from x = -1 to x = 2 is 2

3 0
3 years ago
a cube with side lengths s has a volume of 64 cubic units. what is the length of the side of the cube?
Mademuasel [1]

Answer:

4 units

Step-by-step explanation:

volume of cube = 64 cubic units

\therefore \:  {s}^{3}  = 64 \\  \\  \therefore \:  {s}^{3}  =  {4}^{3}  \\  \\ \therefore \:  {s}=  {4} \: units

6 0
3 years ago
What is 6 divided by 812
maksim [4K]
6 divided by 812 is very difficult to do without using a calculator - I would suggest the bus shelter method, as I've shown in the photo attached, but it is still quite difficult to use that method without a calculator.

<em>If</em>, however, you mean 812 divided by 6, that is a lot easier to calculate using the bus shelter method - so, just in case, I've attached the method for that too.

6 divided by 812 = 0.007389...

4 0
3 years ago
39 + 6s + 14g + y.<br> What is the answer to it
Kruka [31]

Answer:

pretty sure its,100

Step-by-step explanation:

4 0
3 years ago
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