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GREYUIT [131]
3 years ago
5

Help please I give brainliest find the perimeter dans the area plz serious

Mathematics
1 answer:
lilavasa [31]3 years ago
6 0

Answer:

down here

Step-by-step explanation:

Area = 1/2(9x16) = 1/2 x 126 = 63 sq inches

Perimeter = 16 + 12 + 12 = 40 inches

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How to justify each step in the solution of 5x+15=0
velikii [3]

Answer:

Step-by-step explanation:

The given equation is:

5x+15 =0

Subtract 15 from both sides:

5x+15-15= 0-15

By solving the like terms we get:

5x=-15

Divide both sides by 5

5x/5 = -15/5

Simplify:

x= -3...

8 0
2 years ago
Angelica is five years less than double Jahiem’s age. Jahiem is 14 years old. How many years old is Angelica?
RoseWind [281]
Angelica is 23

Steps
Use the equation x=2j-5
Plug in jahiems age (14) for j and solve for c
3 0
2 years ago
Both circle A and circle B have a central angle measuring 135°. The ratio of the radius of circle A to the radius of circle B is
AveGali [126]
The answer is d because i just took a test and that was the answer


5 0
3 years ago
Read 2 more answers
Please explain I need help with all these
sergey [27]
For all of these you're trying to solve for the variable. The variable is usually a number or symbol.

11) -44+n=36
Step one would be to add 44 to both sides of the equation.

N=80

12) -36=p-91
Step one would be to add -91 to both sides of the equation.

P=55

13) X-225=671
Step one you be to add 225 to both sides of the equation. Although it may seem difficult because of the big numbers, it's the same technique.

14) 19=c-(-12)
Step one on this equation will be a little different. Because there are two negative signs (-), they turn into a plus sign. Remember, two negative signs make a positive sign.

19=c+12

Now you just subtract 12 from each side of the equation.

6=C
3 0
3 years ago
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What p
klasskru [66]

Answer:

99.89% of students scored below 95 points.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 76.4, \sigma = 6.1

What percent of students scored below 95 points?

This is the pvalue of Z when X = 95. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{95 - 76.4}{6.1}

Z = 3.05

Z = 3.05 has a pvalue of 0.9989.

99.89% of students scored below 95 points.

5 0
3 years ago
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