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4 years ago

Find each sum. -51 +23=

Mathematics

1 answer:

kompoz [17]4 years ago

5 0

Answer: -28

Step-by-step explanation:

subtract 23 from 51 and you get 28 then one number is negative so it would be -28

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What is the area of this trapezoid?

Sonja [21]

Answer:

$\boxed{Area \: of \: trapezoid = 126 \: {in}^{2}}$

Given:

AB = 12 in.

DF = 2 in.

FE = 12 in.

EC = 2 in.

BE = 9 in.

Step-by-step explanation:

$Area \: of \: trapezoid = \frac{1}{2} (sum \: of \: parallel \: sides) \times height$

Parallel sides are:

AB = 12 in

DC = DF + FE + EC

= 2 + 12 + 2

= 16 in.

Height:

BE = 9 in.

$Area \: of \: trapezoid = \frac{1}{2}(12 + 16) \times 9 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{2 } \times 28 \times 9 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 14 \times 9 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 126 \: {in}^{2}$

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3 years ago

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Solve for n.<br> 11(n-1)+35=3n

kotykmax [81]

Answer:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Solution

= − 3

11−11+35=3 11+24=3

11+24=311n+24=3n11n+24=3n11+24−24=3−24 1

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3 years ago

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Step-by-step explanation:

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</span>

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