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2 years ago

How many different ways can you make 12 cents using any combination of pennies, nickels and dimes?

Mathematics

1 answer:

Umnica [9.8K]2 years ago

4 0

Answer: 4

Step-by-step explanation:

#1: 12 pennies

#2: 2 pennies and 2 nickels

#3: 2 pennies and 1 dime

#4: 7 pennies and 1 nickel

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Cole and Rose are comparing their heights. Cole is 1.7 meters tall, Rose is 20 centimeters shorter than Cloe. What is Rose's hei

Nady [450]

Answer:

150 centimeters

Step-by-step explanation:

Cole is 1.7 meters.

Rose is 1.7 meters - 20 centimeters.

Convert 1.7 meters to centimeters.

1.7 × 100 = 170

1.7 meters = 170 centimeters.

170 - 20

= 150

Rose is 150 centimeters.

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3 years ago

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There are 30 students in a sixth grade class. 60% of the students are girls. How many of the students are girls?

shtirl [24]

Answer:

Step-by-step explanation:

30 students * 60/100= 18

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3 years ago

Graph the function. Identify the vertex and axis of symmetry<br> f(x) = –x2 – x + 2

sergij07 [2.7K]

I hope this is right (-5) + (-4) + (7);
= -9 + 7;
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3 years ago

A certain change in a process for manufacture of component parts is being considered. Samples are taken using both the existing

Katyanochek1 [597]

Answer:

a) The confidence interval is $0.00\leq\pi_1-\pi_2\leq0.02$ .

Step-by-step explanation:

We have to calculate a confidence interval (CI) of a difference of proportions.

For the existing procedure, the proportion is:

$p_1=75/1500=0.05$

For the new procedure, the proportion is:

$p_2=80/2000=0.04$

To calculate the CI, we need to estimate the standard deviation

$s=\sqrt{\frac{p_1(1-p_1)}{n_1} +\frac{p_2(1-p_2)}{n_2} }\\\\s=\sqrt{\frac{0.05(1-0.05)}{1500} +\frac{0.04(1-0.04)}{2000} }=\sqrt{ 0.000032 + 0.000019 }=\sqrt{ 0.000051 }\\\\s=0.007$

For a 90% CI, the z-value is 1.64.

Then, the CI is:

$(p_1-p_2)-z*\sigma \leq\pi_1-\pi_2\leq(p_1-p_2)+z*\sigma \\\\(0.05-0.04)-1.64*0.007\leq\pi_1-\pi_2\leq(0.05-0.04)+1.64*0.007\\\\0.01-0.01\leq\pi_1-\pi_2\leq0.01+0.01\\\\0.00\leq\pi_1-\pi_2\leq0.02$

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2 years ago

What is the answer to 2× -2

Wittaler [7]

Answer:

-4

Step-by-step explanation:

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2 years ago

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