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3 years ago

URGENT!! Which of the following best describe(s) the diagonals of a rectangle. Select all that apply.

Mathematics

2 answers:

mash [69]3 years ago

6 0

Answer:

congruent

Step-by-step explanation:

BabaBlast [244]3 years ago

4 0

Answer:

Congruent

Step-by-step explanation:

rectangle are two congruent right triangles. Because the triangles are congruent, they have the same area, and each triangle has half the area of the rectangle

Hope this helps!

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Rachael got a 550 on the analytical portion of the Graduate Record Exam (GRE). If GRE scores are normally distributed and have m

valina [46]

Answer:

Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population $\mu=600$

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

$\mu=600$ represent the population mean for the Graduate Record Exam (GRE)

$\sigma=25$ represent the population standard deviation for Graduate Record Exam (GRE)

2) Solution to the problem

Let X the random variable that represent the Graduate Record Exam (GRE) of a population, and for this case we know the distribution for X is given by:

$X \sim N(600,25)$

Where $\mu=600$ and $\sigma=25$

We want to find the z score for a score of 550. And in order to do this we need to apply the formula for the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$z=\frac{550-600}{25}=-2$

So the answer for our case would be Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population $\mu=600$

7 0

3 years ago

What is the Gcf of 10,20,78

Ksivusya [100]

The answer to this is 2. Ten only has two factors, 5 and 2, and 2 can be decided evenly amongst them all.

7 0

4 years ago

HELP NEED NOW, WILL GIVE BRAINLIEST: The difference of measures between the arcs subtended by chord AB is 160°. Line l is tangen

omeli [17]

Answer:

50°

Step-by-step explanation:

As usual, the diagram is not drawn to scale.

The chord divides the circle into two arcs that have a sum of 360°. If we let "a" represent the measure of the smaller arc, then we have ...

a + (a+160°) = 360°

2a = 200° . . . . . . . . . . . subtract 160°

a = 100°

The measure of the angle at A is 1/2 the measure of the subtended arc:

acute ∠A = a/2 = (1/2)·100° = 50°

_____

Comment on this geometry

Consider a different inscribed angle, one with vertex V on the circle and subtending the same short arc subtended by chord AB. Then you know that the angle at V is half the measure of arc AB. This is still true as point V approaches (and becomes) point A on the circle. When V becomes A, segment VA becomes tangent line l, and you have the geometry shown here.

4 0

3 years ago

Original: $458 Discount: New: $137.40

Vanyuwa [196]

Answer:

Your answer would be 30% discount

Step-by-step explanation:

137.40 / 458 = .3

8 0

4 years ago

F(t) = t-1 g(t)= t^3 + 4t Find (f -g)(t)

Annette [7]

Answer:

Step-by-step explanation:

t - 1 - t^3 - 4t

-t^3 - 3t

5 0

3 years ago