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3 years ago

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At the craft store, Gabby bought a bag of brown and yellow marbles. The bag contained 10 marbles, and 90% of them were brown. Ho

w many brown marbles did Gabby receive?

1 answer:

satela [25.4K]3 years ago

7 0

Answer:

Gabby received 9 brown marbles.

Step-by-step explanation:

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Suppose that a random sample of size 100 is to be selected from a population with mean 50 and standard deviation 8. What is the

maksim [4K]

Answer:

0.159

Step-by-step explanation:

Given that:

Sample size (n) = 100

Population mean(pm) = 50

Standard deviation (s) = 8

Probability that Sample mean (m) will be greater Than 50.8

Using the relation :

(sample mean - population mean) / (standard deviation /sqrt(n))

P(m > 50.8)

Z = (50.8 - 50) / (8/ sqrt(100))

Z = 0.8 / (8/ 10)

Z = 0.8 / 0.8

Z = 1

P(Z > 1) = 0.15866 ( Z probability calculator)

Hence,

P(Z > 1) = 0.159 ( 3 decimal places)

7 0

3 years ago

Maths equation : solve (2 - x)² < 4/25

ipn [44]

Answer:

8/5 < x < 12/5

Step-by-step explanation:

(2 - x)² < 4/25

2 - x < ±2/5

2 - x < 2/5

-x < -8/5

x > 8/5

2 - x > -2/5

-x > -12/5

x < 12/5

Therefore, your answer is 8/5 < x < 12/5

8 0

3 years ago

Adrian paid $465.60 for 120 rubber pads for the bottom of his store's chairs. How much did Adrian pay for each rubber pad? Dameo

Semmy [17]

Dameon's answer should be closer to $0.40 as the real cost is $3.88 per rubber pad

You can find this by $465.60 by 120

4 0

3 years ago

Read 2 more answers

A cylinder is placed within a cube. The diameter of the cylinder is equal to the length of each side of the cube. What is the vo

pochemuha

The volume of a shape is the amount of space in it.

<em>The volume outside the cylinder, but inside the cube is 214.6 cubic inches</em>

The given parameter is:

$l = 10$ ---- length of the cube

So, the volume of the cube is:

$V_1 = l^3$

$V_1 = 10^3$

$V_1 = 1000$

The volume of the cylinder is:

$V_2 = \pi r^2h$

The diameter (d) of the cylinder equals the length of the cube.

This means that:

$d = l$

$d = 10$

Divide by 2 to calculate the radius of the cylinder

$r = \frac{10}{2}$

$r = 5$

Also, the height of the cube is::

$h =l$

$h =10$

So, we have:

$V_2 = \pi r^2h$

$V_2 = \pi \times 5^2 \times 10$

$V_2 = \pi \times 25 \times 10$

$V_2 = \pi \times 250$

$V_2 = 785.4$

So, the volume (V) outside the cylinder is:

$V = V_1 - V_2$

$V = 1000 - 785.4$

$V = 214.6$

Hence, the volume outside the cylinder is 214.6 cubic inches

Read more about volumes at:

brainly.com/question/15861918

5 0

2 years ago

Can somebody please help me?

victus00 [196]

Answer:

D

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers