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Salsk061 [2.6K]
3 years ago
5

1.Find the area of a trapezium with parallel sides of

Mathematics
1 answer:
Nana76 [90]3 years ago
6 0

Answer:

The area of the trapezium is 74.8\ cm^2

Step-by-step explanation:

Area of a trapezium:

\displaystyle A=\frac{b1+b2}{2}h

This formula is valid if b1 and b2 are parallel and h is perpendicular to both.

Since the trapezium given in the problem satisfies those conditions, we use the formula with:

b1=15 cm

b2=7 cm

h=6.8 cm

\displaystyle A=\frac{15+7}{2}\cdot 6.8

A=74.8\ cm^2

The area of the trapezium is 74.8\ cm^2

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3 years ago
In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on 1170 vehicles. There are a
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Answer:

a. 19.68 miles per gallon.

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Step-by-step explanation:

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In a normal distribution, for any length X, the z-score is determined by the following expression:

 z=\frac{X-\mu}{\sigma}

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5 0
3 years ago
What is the first step I’m solving for the variable?<br> 3(3x-7)=24
spin [16.1K]

Answer:

x = 5

Step-by-step explanation:

First you distribute

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4 0
3 years ago
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6/9 and 12/21
i think this is the answer your looking for
7 0
3 years ago
Dr. Denscombe randomly assigned 10 participants to drink a caffeinated beverage and another 10 participants to drink a noncaffei
weqwewe [10]

Answer: t = 10

Step-by-step explanation:m

 Given that; n₁ = 10, n₂ = 10

ж₁ = 50, ж₂ = 30

Sˣ₁ = 20, Sˣ₂ = 20

Now using TEST STATISTICS

t = (ж₁ - ж₂) / √ ( Sˣ₁/n₁ + Sˣ₂/n₂ )

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3 years ago
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