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3 years ago

A quadrilateral has four right angles its sides are 8 ft 8 ft 5 ft and another 5 feet what shape.

Mathematics

1 answer:

VashaNatasha [74]3 years ago

7 0

Answer:

A rectangle

Step-by-step explanation:

Since the quadrilateral has 4 right angles, the only possible shapes it can be is a square or a rectangle. The sides are NOT all the same, so that means the option of square can be ruled out. The shape is a rectangle.

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Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

The level of significance $\alpha= 0.05$ for 95% level of significance

For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

Sample size required, n

$n=\left (\frac{z_{\frac{\alpha}{2}}\cdot \sigma}{E} \right )^{2}=\left (\frac{1.96\cdot4}{75/60} \right )^{2}=39.337984$

Rounding off, n=40

Sample size =40

Keywords:

95% confidence, sample size, Wall Street Journal

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4 years ago

Which of the following is the graph of y = cos(2x)?

irinina [24]

Answer:

Select the one which meets the following characteristics.

Step-by-step explanation:

y = cos(2x)

Characteristics:

Mean line at y = 0

Amplitude = 1

Period = 360/2 = 180° or pi radians

i.e one complete cos cycle is 0 to 180, next is 180 to 360 and so on

Range : from -1 to 1

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3 years ago

Read 2 more answers

Ms. Ortiz is painting her canoe. Two-fifths of gallon of paint covers ¼ of the canoe.

madreJ [45]

Answer: 8/5 or 1 3/5

Step-by-step explanation:

2/5 + 2/5 + 2/5 + 2/5

8/5 which is 1 3/5

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3 years ago

Help math question down here<br> NO SCAM

vaieri [72.5K]

Answer: x=42

Step-by-step explanation:

Multiply by -6 on both sides and you get

x = 42

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3 years ago

This dot plot shows the amount of time it takes the sorth grade students in Mrs. Green's class to walk to school

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Answer:

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Step-by-step explanation:

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3 years ago

A quadrilateral has four right angles its sides are 8 ft 8 ft 5 ft and another 5 feet what shape. ​

A quadrilateral has four right angles its sides are 8 ft 8 ft 5 ft and another 5 feet what shape.