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pogonyaev
3 years ago
8

Possible names for a rectangle​

Mathematics
1 answer:
kari74 [83]3 years ago
5 0

Step-by-step explanation:

A rectangle can be called a: 1) quadrilateral because it is 4 sided. 2) polygon because it is a closed figure with at least 3 sides. 3) parallelogram because it has 2 pairs of sides that are parallel.

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I need this rn 3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21
Drupady [299]

Answer: The answer is A. -21

Its simplified and i just multiplied 3 by -7 :)

8 0
3 years ago
Read 2 more answers
A recent study showed that the length of time that juries deliberate on a verdict for civil trials is normally distributed with
tia_tia [17]

Answer:

Probability that deliberation will last between 12 and 15 hours is 0.1725.

Step-by-step explanation:

We are given that a recent study showed that the length of time that juries deliberate on a verdict for civil trials is normally distributed with a mean equal to 12.56 hours with a standard deviation of 6.7 hours.

<em>Let X = length of time that juries deliberate on a verdict for civil trials</em>

So, X ~ N(\mu = 12.56, \sigma^{2} = 6.7^{2})

The z score probability distribution is given by;

              Z = \frac{X-\mu}{\sigma} ~ N(0,1)

where, \mu = mean time = 12.56 hours

           \sigma = standard deviation = 6.7 hours

So, Probability that deliberation will last between 12 and 15 hours is given by = P(12 hours < X < 15 hours) = P(X < 15) - P(X \leq 12)

    P(X < 15) = P( \frac{X-\mu}{\sigma} < \frac{15-12.56}{6.7} ) = P(Z < 0.36) = 0.64058

    P(X \leq 12) = P( \frac{X-\mu}{\sigma} \leq \frac{12-12.56}{6.7} ) = P(Z \leq -0.08) = 1 - P(Z < 0.08)

                                                     = 1 - 0.53188 = 0.46812

<em>Therefore, P(12 hours < X < 15 hours) = 0.64058 - 0.46812 = 0.1725</em>

Hence, probability that deliberation will last between 12 and 15 hours is 0.1725.                                                 

7 0
3 years ago
What is the solution of the system? Use the elimination method. 2x+y=206x−5y=12 Enter your answer in the boxes.
astraxan [27]

Answer:

The answer to your question is:   x = 7; y = 6

Step-by-step explanation:

                                             2x+y=20             ( 1 )  Multiply by 5

                                             6x−5y=12            ( 2 )

                               5 (2x+y=20)    = 10x + 5y = 100

                                          10x + 5y = 100

                                            6x − 5y =   12             Eliminate y

                                          16 x        = 112

                                           x = 112 / 16

                                           x = 7

                                 2(7) + y = 20                 Substitution

                                 14 + y = 20

                                 y = 20 - 14

                                 y = 6

7 0
3 years ago
Find the unknown angle measures in each triangle
expeople1 [14]

Answer:

Angle Q= 78°

Angle P= 51°

Angle S and Angle U= 56°

Step-by-step explanation:

Angles in a triangle should add up to 180° when added

8 0
3 years ago
The high temperatures in Anchorage, Alaska for five days in December were -8°C, -1°C, 2°C, 4°C, and -2°C.
IRISSAK [1]

Answer:

-1 Degree C

Step-by-step explanation:

When its talking about average temperature, its talking about the mean. To calculate mean, you add all the numbers and divide it by how many numbers are there.

(-8) + (-1) + 2 + 4 + (-2) = -5

mean = -5/5

-1 degree C

7 0
3 years ago
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