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3 years ago

(20 POINTS) What is the area of this house?

Mathematics

2 answers:

Sati [7]3 years ago

8 0

Area = (10×15) + (38×18) = 150 + 684 = 834

HACTEHA [7]3 years ago

4 0

23 time 18 is 414. 15 times 28 is 420. So the answer is 834( ◠‿◠ )

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Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is μd =

swat32

Answer:

Test statistic, $t_{s} = -0.603$ (to 3 dp)

Step-by-step explanation:

Deviation, d = x -y

Sample mean for the deviation

$\bar{d} = \frac{\sum x-y}{n}$

$\bar{d} = \frac{(28-6) + (31-27)+(20-26)+(25-25)+(28-29)+(27-32)+(33-33)+(35-34)}{8} \\\bar{d} = -0.625$

Standard deviation: $SD = \sqrt{\frac{\sum d^{2} - n \bar{d}^2}{n-1} }$

$\sum d^{2} = (28-26)^2 + (31-27)^2 +(20-26)^2 +(25-25)^2 +(28-29)^2 +(27-32)^2 +(33-33)^2 +(35-34)^2\\\sum d^{2} = 63$

$SD = \sqrt{\frac{63 - 8 * (-0.625)^2}{8-1} }$

SD =2.93

Under the null hypothesis, the formula for the test statistics will be given by:

$t_{s} = \frac{ \bar{d}}{s_{d}/\sqrt{n} } \\t_{s} = \frac{- 0.625}{2.93/\sqrt{8} }$

$t_{s} = -0.6033$

6 0

3 years ago

To prepare a chocolate cake, 2 1/4 cups of flour were used. How many grams of flour was used if each cup of flour weighs 120 gra

Marianna [84]

120/4 = 30
120 x 2 = 240
240 + 30 = 270
270 grams of flour were used

4 0

2 years ago

the area of a rectangular photograph is 35 square inches. If the width of the photo is 5 inches how tall is the photo

Vika [28.1K]

We know that:

Area= length*width

Plug in the stuff you know.

35= length(tall)*5

Divide both sides by 5.

7= length

The photo is 7 inches tall.

I hope this helps!
~kaikers

5 0

3 years ago

Scientists estimate there are _____ different plant species.

Law Incorporation [45]

The answer is B.

There are about 391,000 of plants currently known to science.

Hope this helps.

4 0

3 years ago

Read 2 more answers

How do you work out <br> 5x71

Gwar [14]

Answer:

355

Step-by-step explanation:

8 0

3 years ago