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3 years ago

Which statement about rectangles and rhombuses is always true?

Mathematics

1 answer:

Reptile [31]3 years ago

3 0

Answer:

C and D

Step-by-step explanation:

A square is a quadrilateral that has 4 congruent sides and has 4 right angles and equal diagonals that bisect perpendicularly

A rhombus is a quadrilateral that has 4 congruent sides and diagonals that bisect perpendicularly

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What is 108:200 as a fraction and a decimal

belka [17]

Answer:

108/200 as a fraction, I don't know how to do it as a decimal

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

If BE−→− bisects ∠ABD and m∠ABD = 66°, find m∠ABE.

Montano1993 [528]

Answer:

∠ABE = 33°

Step-by-step explanation:

<h3>Angle bisector:</h3>

Angle bisector is a straight line that divides the angle into two congruent (equal) angles.

So, BE bisects the ∠ABD into two equal angles.

⇒∠ABE will be half of ∠ABD

∠ABD = ∠ABE + ∠BED

66° = ∠ABE + ∠ABE

66 = 2∠ABE

∠ABE = 66/2

∠ABE = 33°

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2 years ago

What are the x-intercept and the y-intercept of the<br> graph of 5x + 8y = 20?

Marina86 [1]

Answer:

Slope Calculator

Step-by-step explanation:

Search up slope calculator and put in those expressions

8 0

3 years ago

What three digit number has a tens digit that is five more than the ones digit and a hundreds digit that is eight less than the

Serga [27]

The answer to the question is 194

4 0

3 years ago

Based on historical data, your manager believes that 39% of the company's orders come from first-time customers. A random sample

Irina-Kira [14]

Answer:

$z= \frac{0.21- 0.39}{0.0373}= -4.829$

$z= \frac{0.32- 0.39}{0.0373}=-1.877$

And we can find the probability with this difference:

$P(-4.829$

Step-by-step explanation:

For this case we have the following info given:

$n = 171$ represent the sample size

$p =0.39$ the proportion of interest

We want to find the following probability:

$P( 0.21 < \hat p < 0.32)$

We can use the normal approximation for this case since np >10 and n (1-p) >10

For this case we know that the distribution for the sample proportion is given by:

$\hat p \sim N( p , \sqrt{\frac{p (1-p)}{n}} )$

And we can use the following parameters:

$\mu_{\hat p}= 0.39$

$\sigma_{\hat p} =\sqrt{\frac{0.39*(1-0.39)}{171}}= 0.0373$

And we can apply the z score formula given by:

$z = \frac{p \\mu_{\hat p}}{\sigma_{\hat p}}$

And using this formula we got:

$z= \frac{0.21- 0.39}{0.0373}= -4.829$

$z= \frac{0.32- 0.39}{0.0373}=-1.877$

And we can find the probability with this difference:

$P(-4.829$

6 0

3 years ago