3 years ago

Please help!!! It's a quiz

Mathematics

1 answer:

xxMikexx [17]3 years ago

8 0

Answer: 3,2.50)

Step-by-step explanation:

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Square 20cmx20xm

Oxana [17]

Answer:

8,000

Step-by-step explanation:

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3 years ago

Find the surface area of the right prism. Round to the nearest whole number.

andriy [413]

Answer:

$\large\boxed{S.A.=96\ cm^2}$

Step-by-step explanation:

We have:

(1) two trapezoids with bases b₁ = 7cm and b₂ = 5cm and the height h = 4cm

(2) three rectangles 3 cm × 7 cm, 3 cm × 4 cm and 3 cm × 5 cm.

The formula of an area of a trapezoid:

$A=\dfrac{b_1+b_2}{2}\cdot h$

Substitute:

$A=\dfrac{7+5}{2}\cdot4=24\ cm^2$

Calculate the areas of the rectangles:

$A_1=(3)(7)=21\ cm^2\\\\A_2=(3)(4)=12\ cm^2\\\\A_3=(3)(5)=15\ cm^2$

The Surface Area:

$S.A.=(2)(24)+21+12+15=96\ cm^2$

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3 years ago

Find the gcf of the terms of the polynomial. 44x^5 16x^3

julia-pushkina [17]

$44x^5=4x^3\cdot11x^2\\\\16x^3=4x^3\cdot4\\\\\boxed{GCF(44x^5;\ 16x^3)=4x^3}\to\fbox{c.}$

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3 years ago

Mellisa created a graph

vovikov84 [41]

Answer:

no she didn't

Step-by-step explanation:

melissa has no hands

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3 years ago

1. 2.5x + 100 = 600<br> 2. 10 = 2x - 4<br> 3. 2x + 5 = 30

Katarina [22]

Answer:

1) 200 2) 7 3) 12.5

Step-by-step explanation:

For god's sake, use a calculator

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3 years ago