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2 years ago

Find the area 7cm. 20cm. 11cm. 14cm. ( will mark brainlest)

Mathematics

1 answer:

nignag [31]2 years ago

6 0

Answer:

217

Step-by-step explanation:

we split the shape into 2 different rectangles and find the sum of their area.

small rectangle: 7 × 11 = 77

large rectangle 7 × 20 = 140

140 + 77 = 217

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Find the exterior angle of a regular decagon

mamaluj [8]

Answer:

Exterior Angle = 36 degrees

Step-by-step explanation:

Each interior angle of a regular decagon measures 144 degrees.

=> We'll subtract 144 from 180 to get the measure of the exterior angle.

=> Exterior Angle = 180-144

=> Exterior Angle = 36 degrees

6 0

3 years ago

Solve for x. 2x+3y=20 -2x+y=4

Mama L [17]

Answer:

x = 1

Step-by-step explanation:

-2x + y = 4

y = 2x + 4

2x + 3y = 20

2x + 3(2x + 4) = 20

2x + 6x + 12 = 20

8x + 12 = 20

8x = 8

x = 1

3 0

3 years ago

At a certain university, the average attendance at basketball games has been 3125. Due to the dismal showing of the team this ye

Neporo4naja [7]

Answer:

The test statistic needed to evaluate the claim is t = -1.08.

Step-by-step explanation:

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected value of the mean, s is the standard deviation of the sample and n is the size of the sample.

At a certain university, the average attendance at basketball games has been 3125. The athletic director claims that the attendance is the same as last year.

This means that $\mu = 3125$

Due to the dismal showing of the team this year, the attendance for the first 9 games has averaged only 2915 with a standard deviation of 585.

This means that $n = 9, X = 2915, s = 585$

What is the test statistic needed to evaluate the claim?

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{2915 - 3125}{\frac{585}{\sqrt{9}}}$

$t = -1.08$

The test statistic needed to evaluate the claim is t = -1.08.

6 0

3 years ago

-1/y^-4 A -4/y B -4y C y^4 D -y^4

Allushta [10]

Answer:

The answer is D: -y^4

Step-by-step explanation:

(-1/y^-4) = -1(y^4)/1 = -y^4

8 0

3 years ago

Whats up you mofos good morning

Paul [167]

yap mofos morning good

6 0

3 years ago

Find the area 7cm. 20cm. 11cm. 14cm. ( will mark brainlest)​

Find the area 7cm. 20cm. 11cm. 14cm. ( will mark brainlest)