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2 years ago

Can you help me with this?

Mathematics

1 answer:

horsena [70]2 years ago

7 0

Answer:

Step-by-step explanation:

it this answer

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If 20% of a number is 8, find 10% of that number.

Gemiola [76]

Answer:

20%=8

10%=?

by cross multiplications,

10×8=80

80÷20=4

Hence the answer is 4.

3 0

1 year ago

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Your boss tells you that she knows the length of the widgets your company makes is normally distributed with a mean of 25 inches

sp2606 [1]

Answer:

Mean of sampling distribution = 25 inches

Standard deviation of sampling distribution = 4 inches

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 25 inches

Standard Deviation, σ = 12 inches

Sample size, n = 9

We are given that the distribution of length of the widgets is a bell shaped distribution that is a normal distribution.

a) Mean of the sampling distribution

The best approximator for the mean of the sampling distribution is the population mean itself.

Thus, we can write:

$\bar{x} = \mu = 25\text{ inches}$

b) Standard deviation of the sampling distribution

$s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{12}{\sqrt{9}} = 4\text{ inches}$

8 0

2 years ago

I need help please I will mark you brainlists

V125BC [204]

Answer:

2. ΔABC is isosceles

Step-by-step explanation:

Given : m∠A = 50

m∠BCD = 180 - (m∠BDC + m∠DBC)

= 180 - (100 + 30)

= 50

then

m∠A = m∠BCD

therefore ΔABC is isosceles

6 0

2 years ago

ANYEONESSSSSSSSSS???

Dmitriy789 [7]

Answer:

C. 2

Step-by-step explanation:

To solve slope, the formula is $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$ . 9-3 is 6 and 5-2 is 3. So simplify 6/3 to 2.

Hope it's correct!

4 0

2 years ago

A Pyramid is placed inside a prism as shown in the pyramid has the same base area B as a prison but half the height H of the pri

guajiro [1.7K]

Answer:

D) V= 1/6 bh

Step-by-step explanation:

The expression that provides the volume of the pyramid is as follows;

As mentioned in the question

It is given that the pyramid put inside a prism

Also the pyramid contains the similar base area but the height is half of the prism

so the base area of the pyramid is b

And, the Height of the pyramid = h ÷ 2

Now as we know that

The volume of the pyramid is

V = 1 ÷3 × base ares × height

= 1 ÷ 3 × b × h ÷ 2

V = 1 ÷ 6 bh

So, the volume is 1 ÷6 bh cube unit.

8 0

2 years ago

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