The unknown number is n. So n is the unknown variable in the equation.
In order to write an equation in which n is included we must know some dependence of n with other values.
We know that <span>the difference of three times a number and 44 is −19. So, we can write:
3*n-44=-19
3*n=-19+44
3*n=25
n=25/3
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<span>B: To make the box, we need 2 triangular ends,
and 3 rectangular sides. Side the volume = 3240
and the height = 30, the area of each base (end) = 108.
The sides have areas of 30 x 42 = 720, and 30 x 15 = 450,
and there are 2 of those. So total area = 108 + 108 + 720 + 900 = 1836 cm^2
creds to yahoo answer
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Answer:
i have the same question
Step-by-step explanation:
Answer:
7 ÷ 4/5 is 8.75 as a decimal or 8 3/4 as a fraction
Area of rectangle is 7x9 which is 63
Area of the square=5x5 which is 25
So area is: 63-25=38