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4 years ago

Find the area of the rectangle.

Mathematics

1 answer:

kirill115 [55]4 years ago

4 0

Answer:

40 units²

Step-by-step explanation:

Area of Rectangle: A = lw

Step 1: Define variables

l = 8

w = 5

Step 2: Substitute and evaluate

A = 8(5)

A = 40 u²

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If f(x) = -2[x] + 8, what is f(-1.8)? O 4 O 6 O 10 O 12

lina2011 [118]

Answer:

Step-by-step explanation:

since the function is -2x+8 and you have been told to find f(-1.8) you have to replace -1.8 were there's x in the function.

f(x)=-2x+8

f(-1.8)=-2x+8

=-2(-1.8)+8

=3.6+8

=11.6 round off to 12

I hope this helps

5 0

3 years ago

Calculate the volume of the pyramid shown with measurements a = 3, b = 7, and c = 9.63 units348 units331.5 units330 units3

Yuri [45]

The volume of a pyramid is given by:

$V=\frac{1}{3}\cdot A_b\cdot h\text{.}$

Where:

• Ab is the area of the base,

• h is the height.

In this case, we have:

• a = 3 units,

• b = 7 units,

• c = 9 units,

• Ab = b * c,

• h = a = 3 units.

Replacing the data in the formula above, we get:

$V=\frac{1}{3}\cdot(b\cdot c)\cdot a=\frac{1}{3}\cdot(7\text{ units}\cdot9\text{ units})\cdot3\text{ units }=63units^3\text{.}$

Answer: 63 units³

5 0

1 year ago

ASAP PLEASE

madam [21]

Answer:

he has to pick the phone up 100 more times

6 0

3 years ago

Read 2 more answers

This is going to be hard ok here i go what is 5678,00000 x 4321,0000000

goldenfox [79]

Answer: 2.45346638e+19

Step-by-step explanation:

4 0

3 years ago

For a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458. At the 0.05 level o

Anika [276]

Answer:

Value of test statistics = 2.30

Step-by-step explanation:

We are given that for a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458.

Also, Null Hypothesis, $H_0$ : $\mu$ = 450

Alternate Hypothesis, $H_1$ : $\mu\neq$ 450

The test statistics that will be used here is One sample t-test statistics;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean = 458

s = sample standard deviation = 20.5

n = sample of items = 35

So, test statistics = $\frac{458-450}{\frac{20.5}{\sqrt{35} } }$ ~ $t_3_4$

= 2.30

Therefore, the value of test statistics is 2.30 .

3 0

3 years ago