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3 years ago

Please help me!

Mathematics

1 answer:

MAXImum [283]3 years ago

8 0

area is 8*10 = 80 ( Area of square formed by dotted line)

1/2 *4 * 10 = 20 (Area of small triangle formed by dotted line)

20 +80 = 100 square inches

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Which is the equation of a line that passes through (1,8) and (6,4)

Sati [7]

Answer:

Step-by-step explanation:

(6, 4)

(1, 8)

m = $\frac{8-4}{1-6}$ = - $\frac{4}{5}$

y - 4 = - $\frac{4}{5}$ ( x - 6 )

<em>y = - </em> $\frac{4}{5}$ <em> x + </em> $\frac{44}{5}$ ⇔ y = - 0.8x + 8.8

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2 years ago

What adds to -9, and multiplies to -70?

dybincka [34]

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Make me the brainliest answer.

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3 years ago

Below are two parallel lines with a third line intersecting them.

Molodets [167]

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2 years ago

Calculate the value of the sample variance. Round your answer to one decimal place. 9_5,9_5,2,9_5

Ugo [173]

Answer:

$s^2 = 0.01$

Step-by-step explanation:

Given

Values: 9/5, 9/5, 2, 9/5

Required

Calculate the sample variance

Sample variance is calculated using:

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$

First, we calculate the mean

$\overline x = \frac{\sum x}{n}$

$\overline x = \frac{9/5 + 9/5 + 2 + 9/5}{4}$

$\overline x = \frac{7.4}{4}$

$\overline x = 1.85$

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$ becomes

$s^2 = \frac{(9/5 - 1.85)^2+(9/5 - 1.85)^2+(2 - 1.85)^2+(9/5 - 1.85)^2}{4 - 1}$

$s^2 = \frac{(-0.05)^2+(-0.05)^2+(0.15)^2+(-0.05)^2}{4 - 1}$

$s^2 = \frac{0.0025+0.0025+0.0225+0.0025}{3}$

$s^2 = \frac{0.03}{3}$

$s^2 = 0.01$

<em>Hence, the variance is 0.01</em>

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2 years ago

Write the number in standard form as a decimal

pishuonlain [190]

Answer:

Step-by-step explanation:

<h2>I hope it will help you</h2><h2>please make me brainlest</h2>

<h2><u>THANK</u><u> U</u></h2>

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3 years ago