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3 years ago

10

Which of the following steps would be most useful in proving that a circle with a radius of 3 inches is similar to a circle with

a radius of 2 feet?

1 answer:

mafiozo [28]3 years ago

7 0

Answer:

what are the opitions

Step-by-step explanation:

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Farm has chickens and cows. All the cows have 4 legs and all the chickens have 2legs.

mixas84 [53]

Answer:

19 cows and 3 chickens

18 cows and 5 chickens

17 cows and 7 chickens

16 cows and 9 chickens

15 cows and 11 chickens

Step-by-step explanation:

For example, the first one

19 cows x 4 legs=76 legs and

3 chickens x 2 legs= 6 legs

4 0

2 years ago

Read 2 more answers

If an object dropped from the height of 144 ft the function h(t)=-16t^2+144 gives the height of the object after t seconds. When

Nadya [2.5K]

3 seconds
0= -16t^2+144
-144/-16=9
9=t^2
Sq rt of 9 is 3

8 0

3 years ago

Ronnie, Mack, Kim, and Ada together stacked a total of 40 pizzas in a pan. Ronnie stacked 0.25 of the pizzas, Mack stacked 9 of

natta225 [31]

Hello!

Here's how much each person stacked:

Ronnie -- 0.25 of the 40 pizzas.

Mack -- 9/40

Kim -- 35% of the 40 pizzas.

Ada -- rest of the pizzas.

Now, the questions asks for who stacked the most pizzas.

First, find our how many pizzas they stacked out of 40.

40 × 0.25 = 10

40 × 35% = 14

10 + 9 + 14 = 33

40 - 33 = 7

This means that Ronnie stacked 10 pizzas, Mack stacked 9 pizzas, Kim stacked 14 pizzas, and Ada stacked 7 pizzas.

ANSWER:

Kim stacked the most pizzas since she stacked 14 of them.

7 0

3 years ago

Read 2 more answers

Given f(x)=-3x+2 , fine the domain value if the range value is -10

Nimfa-mama [501]

$-10=-3x+2\\
-3x=-12\\
x=4$

5 0

3 years ago

A manufacturing company wants to use a sample to estimate the proportion of defective tennis balls that are produced by a machin

Kitty [74]

Answer:

The least number of tennis balls needed for the sample is 1849.

Step-by-step explanation:

The (1 - <em>α</em>) % confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha/2}\ \sqrt{\frac{\hat p(1-\hat p)}{n}}$

The margin of error for this interval is:

$MOE= z_{\alpha/2}\ \sqrt{\frac{\hat p(1-\hat p)}{n}}$

Assume that the proportion of all defective tennis balls is <em>p</em> = 0.50.

The information provided is:

MOE = 0.03

Confidence level = 99%

<em>α</em> = 1%

Compute the critical value of <em>z</em> for <em>α</em> = 1% as follows:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58$

*Use a <em>z</em>-table.

Compute the sample size required as follows:

$MOE= z_{\alpha/2}\ \sqrt{\frac{\hat p(1-\hat p)}{n}}$

$n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)} }{MOE}]^{2}$

$=[\frac{2.58\times \sqrt{0.50(1-0.50)} }{0.03}]^{2}\\\\=1849$

Thus, the least number of tennis balls needed for the sample is 1849.

8 0

3 years ago