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3 years ago

Find the area of these Trapezoid

Mathematics

1 answer:

nlexa [21]3 years ago

7 0

Answer:

you can find it by 1/2a+bxh

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The mean number of emails adele received during a week was 51.

Diano4ka-milaya [45]

Given:

The mean number of emails adele received during a week was 51.

The numbers received for the six days were 39, 57, 70, 45, 71, 32.

To find:

The number of emails received on the seventh day.

Solution:

Let x be the number of emails received on the seventh day.

We know that,

$\text{Mean}=\dfrac{\text{Sum of observations}}{\text{Number of observations}}$

$51=\dfrac{314+x}{7}$

Multiply both sides by 7.

$357=314+x$

Subtract 314 from both sides.

$357-314=x$

$43=x$

Therefore, she received 43 emails on the seventh day.

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3 years ago

Suppose you are depositing an amount today in an account that earns 5% interest, compounded annually. If your goal is to have $5

Natalka [10]

Answer:

If you walk into a bank and open up a savings account you will earn interest ... include the amount of money deposited called the principal, the annual interest rate ...

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3 years ago

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Find the median of the data. 5, 8, 4, 6, 8

Ksenya-84 [330]

Answer:

Step-by-step explanation:

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3 years ago

Andrew knows that exactly two of the equations $x(3+4)=4(x+3),$ $4x+5=3(x+2),$ and $(x+2)+5(x-1)=3(x+3)$ are true. What is the v

iris [78.8K]

Answer:

$4$

Step-by-step explanation:

The equations are

$x(3+4)=4(x+3)\\\Rightarrow 7x=4x+12\\\Rightarrow x=\dfrac{12}{7-4}\\\Rightarrow x=4$

$4x+5=3(x+2)\\\Rightarrow 4x+5=3x+6\\\Rightarrow x=1$

$(x+2)+5(x-1)=3(x+3)\\\Rightarrow x+2+5x-5=3x+9\\\Rightarrow 6x-3=3x+9\\\Rightarrow 3x=12\\\Rightarrow x=4$

The two equations that are true are $x(3+4)=4(x+3)$ and $(x+2)+5(x-1)=3(x+3)$ and the value of $x$ is $4$ .

7 0

3 years ago

Subtract: 5 lb 7 oz − 11 oz =

Snowcat [4.5K]

Step-by-step explanation:

Step 1: Convert the pounds to oz

1 pound = 16 oz

5 * 16 = 80 oz

80 oz + 7 oz = 87 oz

Step 2: Subtract

87 oz - 11 oz

76 oz

Answer: 76 oz

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3 years ago

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Find the area of these Trapezoid ​

Find the area of these Trapezoid