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3 years ago

1. A rectangular kitchen sink is 25.25 inches long, 19,75 inches wide, and

Mathematics

1 answer:

Lerok [7]3 years ago

6 0

Answer: 4,986.875

Step-by-step explanation: Multiply 25.25 x 19.75. Then, multiply the product by 10, or shift the decimal point one place to the right.

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Hello, help plz :) :) :)

NeTakaya

Answer:

Step-by-step explanation:

z = 9, so we plug in 9 for z.

9 * 3 = 27

6 0

3 years ago

Read 2 more answers

Work out the area of a semicircle with radius 3 cm. Give your answer in terms of t. 3 cm

vivado [14]

Answer:

Area = 4.5 π cm²

Step-by-step explanation:

Area of semicircle = $\frac{\pi r^2}{2}$

Where r = 3cm

=> Area = $\frac{\pi(3)^2 }{2}$

=> Area = $\frac{9\pi }{2}$

=> Area = 4.5 π cm²

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4 years ago

Hannah made 4 cups of gelatin dessert she divided the dessert into equal servings each serving is 2/3 cup how many serving diid

Oksanka [162]

Answer:

6 servings

Step-by-step explanation:

This means we need to find 4/(2/3). This is just 4 * 3/2, so it is 6.

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3 years ago

Jake made cupcakes for his birthday. He made 13 chocolate and 9 vanilla. What percent of the cupcakes

Leona [35]

Answer:

59 1/11 %

Step-by-step explanation:

13 chocolate and 9 vanilla = 22 total cupcakes

Percent chocolate = 13 chocolate / 22 total

=13/22

=.59090909

=59 1/11 %

7 0

3 years ago

Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$

5 0

3 years ago