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3 years ago

Find the surface area of a square pyramid with side length 4 mi and slant height 5 mi.

Mathematics

1 answer:

andriy [413]3 years ago

3 0

Answer:

SA = 56 sq mi

Step-by-step explanation:

SA = area of base + 1/2(perimeter of base)(slant height)

SA = 16 + 1/2(16)(5)

SA = 16 + 8(5)

SA = 16 + 40

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2 – Efetue:

BartSMP [9]

A) $7x(-5)$

A multiplicação de um numero positivo por um numero negativo resulta em um numero negativo: $(+) x (-)=(-)$

$(7x5)$

Multiplique os valores

$-35$

resposta para A: $-35$

B) $(-9)x(-8)$

A multiplicação dois números negativos resulta em um numero positivo : $(-)x(-)=(+)$

$9 x 8$

Multiplique os valores

$72$

Resposta para B : $72$

C) $(-15) : 5$

A divisão de um numero negativo por um positivo resulta em um numero negativo: $(-):(+)=(-)$

$-(15:5)$

Divida os números

$-3$

Resposta para C: $-3$

D) $125 : 25$

Divida os números

$5$

Resposta para D: $5$

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3 years ago

A sweatshirt that was originally priced at $42.50 has been marked down to $34.00. What is the percent decrease?

vichka [17]

Answer:

The answer is 20%

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6 0

3 years ago

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2. Brian is filling a conic container with water. He has the container half full. The radius of the container is 5 inches and th

MakcuM [25]

Answer:

current volume of the water = 785.714 in²

Height of new container = 10 inches

Step-by-step explanation:

Radius of the container = 5 inches

Height of the container = 20 inches

Volume of the container = πR²H = (22/7) × 5² × 20 = 1571.428571428 in²

Since the container is half filled with water, volume of the water = 1571.428571428 ÷ 2 = 785.714 in²

b. Volume of cylinder = πR²H = volume of water from first container = 785.714 in²

Hence 785.714 = (22/7) × 5² × H

H = (785.714) ÷ [(22/7) × 25] = 10 inches

Height of new container = 10 inches

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blagie [28]

Answer:

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Step-by-step explanation:

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5 + 0.55x = 10 + 0.75x

mylen [45]

Step-by-step explanation:

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