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3 years ago

How do I solve this equation? I have tried numerous times and I cannot do it.

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

8 0

That is the answer. hopefully I can help you.

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Fuel economy estimates for automobilos built in a certain yoar predicted a mean of 26.8 mpg and a standard deviation of 72 mpg f

kodGreya [7K]

Answer:

range=u ± 3.09 sd

Step-by-step explanation:

Given:

mean, u= 26.8 mpg

standard deviation, sd=72 mpg

% contained in interval = 99.8%

the interval for 99.8% of the values of a normal distribution is given by

mean ± 3.09 standard deviation= u ± 3.09 sd

=26.8 ± 3.09(72)

=26.8 ± 222.48

= 249.28 , -195.68

range=u ± 3.09 sd = 249.28 , -195.68 !

4 0

2 years ago

What is the volume of this triangular pyramid? 9 cm 7 cm 8 cm

Finger [1]

Answer:

84 cm³

Step-by-step explanation:

The volume of a pyramid is given by the formula ...

V = 1/3Bh

where B is the area of the base.

The base is shown as a right triangle with legs 8 cm and 7 cm. Its area is given by the triangle formula ...

A = 1/2bh

A = 1/2(8 cm)(7 cm) = 28 cm²

Then the volume of the triangular pyramid is ...

V = 1/3(28 cm²)(9 cm) = 84 cm³

5 0

2 years ago

Read 2 more answers

I need to know theater answer

Lerok [7]

2 min and 7 sec plus 12= 2 min and 19 sec. Add 8 to the number 19, equals 26. It took Juan 2 min and 26 sec to finish.

7 0

3 years ago

5(k+4)-2k simplify the expression

mixas84 [53]

Answer:

3 k + 20

Step-by-step explanation:

7 0

2 years ago

6.Madeline made the wooden steps shown. What is the volume of the steps? The wooden steps have two parts, both of which are rect

Lelu [443]

Answer:

840 cubic inches

Step-by-step explanation:

Given:

The wooden steps have two parts.

Both of which are rectangular prisms.

The top part is 6 inches tall, 5 inches wide and 10 inches long.

The bottom part is 6 inches tall, 9 inches wide and 10 inches long.

Question asked:

What is the volume of the steps?

Solution:

For top part

Length = 10 inches

Width = 5 inches

Height = 6 inches

As we know:

$Volume\ of\ rectangular\ prism =length\times width\times height$

$=10\times5\times6=300\ cubic\ inches$

For bottom part

Length = 10 inches

Width = 9 inches

Height = 6 inches

Similarly

$Volume\ of\ rectangular\ prism =length\times width\times height$

$=10\times9\times6=540\ cubic\ inches$

Volume of two steps = 300 + 540 = 840 cubic inches

Therefore, the volume of the steps are 840 cubic inches.

8 0

3 years ago