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2 years ago

11

Jay has a jar of beads. 6 purple beard, 8 blue beads, and 4 yellow beads. If he removes one bead at random, what is the probabil

ity that it will not be yellow?

1 answer:

stiv31 [10]2 years ago

7 0

You get a pie chart to do percentages just so you dont cheat you still can do work y'know

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A sample of 8 pieces of data is collected and we wish to perform the level test vs. . The population standard deviation is known

Sphinxa [80]

Answer:

0.0009

Step-by-step explanation:

$\mu=4$

$\sigma=0.55$

n = 8

This is the left tailed test .

The null and alternative hypothesis is ,

$H_0:\mu=4$

$Ha:\mu$

Test statistic = z=-3.12 from the table.

P(z <-3.12 ) = 0.0009

P-value =0.0009

4 0

3 years ago

6. A pizza's original price is $11. It is on sale for $9.25. What percent off is it?

wolverine [178]

Solution:

<u>We know that:</u>

$Original \ price = \$11$

$Sale \ price = \$9.25$

$\frac{9.25}{11} + \frac{1.75}{11} =100\%$

<u>Simplify the equation to find the percent off:</u>

$\frac{9.25}{11} + \frac{1.75}{11} =100\%$

$84\% + \bold{16\%} = 100\% \space\ \space\ \space\ \ \ \ \ [Rounded]$

This means that the <u>original price</u> has decreased about 16%.

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2 years ago

What is the quotient of 1+i/<br> 3+4i

gizmo_the_mogwai [7]

Answer: 7/25-1/25i

Step-by-step explanation:

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2 years ago

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What is equivalent to 9

frosja888 [35]

What is equivalent to 9?

9/1 = 9

9/1 is equivalent to 9.

4 0

2 years ago

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a family is building a rectangular fountain in the backyard. the yard is rectangular and measures 8x by 9x. The fountain is goin

densk [106]

Teachers often all this problem a donut problem because it’s like the donut hole getting cut out of the middle. The way that you solve this is to find the area of the whole yard and subtract the area of the fountain. Since they are rectangles we’re going to use A = LW
Area of yard - Area of fountain
A = (8x)(9x) - (2x)(5x)
A = 72 x^2. - 10 x^2
A 62 x^2

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3 years ago

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