Hey there!
Here is your answer:
<u>The proper answer to this question is "40".</u>
Reason:
<u>40/x=100/45</u>
<u>(40/x)*x=(100/45)*x - we multiply both sides of the equation by x</u>
<u>40=2.22222222222*x - we divide both sides of the equation by (2.22222222222) to get x</u>
<u>40/2.22222222222=x </u>
<u>18=x </u>
<u>x=18</u>
<span>45% of 40=18
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit</span>
For this case, the first thing we must do is define a variable.
We have then:
n: number of days.
We now write the explicit formula that represents the problem.
We have then:
an = 4n + 15
Where,
15: crunches the first day
4: increase the number 4 each day
Answer:
An explicit formula for the number of crunches Abbie will do on day n is:
an = 4n + 15
The answer is B:40cm because if you times 5x4 then times 2 you get 40cm
Answer:
-2.5
Step-by-step explanation:
Plugged into calculator
The new matrix that is formed by the 3A + B is given below. Then the value of x is 102.

<h3>What is the matrix?</h3>
A matrix is a specific arrangement of items, particularly numbers. A matrix is a row-and-column mathematical structure. The
element in a matrix, such as M, refers to the i-th row and j-th column element.
The matrices are given below.

Then the new matrix is given as 3A + B. Then we have

More about the matrix link is given below.
brainly.com/question/9967572
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