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Nadya [2.5K]
3 years ago
7

What is the surface area of this right rectangular prism?

Mathematics
2 answers:
horrorfan [7]3 years ago
5 0
Surface=2(5 x 4)+2(4 x 7)+2(5 x 7)=2(20)+2(28)+2(35)=40+56+70=166

Answer: 166 cm²
valina [46]3 years ago
3 0
the answer is 166 now dabb on em..

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The output of a process is stable and normally distributed. If the process mean equals 23.5, the percentage of output expected t
erastovalidia [21]

Answer:

Option a) 50% of output expected to be less than or equal to the mean.

Step-by-step explanation:

We are given the following in the question:

The output of a process is stable and normally distributed.

Mean = 23.5

We have to find the percentage of output expected to be less than or equal to the mean.

Mean of a normal distribution.

  • The mean of normal distribution divides the data into exactly two equal parts.
  • 50% of data lies to the right of the mean.
  • 50% of data lies to the right of the mean

Thus, by property of normal distribution 50% of output expected to be less than or equal to the mean.

6 0
3 years ago
Which number is greater than square root of one hundred fifty five?
joja [24]

Answer:

try 3

Step-by-step explanation:

5 0
3 years ago
Find the least common denominator (lcd) of 1/3 and 2/9 .
OLEGan [10]
The lowest common denominator of 1/3 and 2/9 = 9
8 0
3 years ago
Find the value of x and y
Natalija [7]

Hello and Good Morning/Afternoon:

<u>Let's take this problem step-by-step</u>:

<u>What does the information want:</u>

  • value of x
  • value of y

<u>Let's gather some information</u>:

  • ΔA'BC' and ΔABC are similar triangles

             ⇒ Angle B is shared by both triangles

             ⇒ Angle A' and A are the same, as they are both on parallel

                   lines, A'C' and AC, and both angles are formed with the

                   same line AB

                 ⇒ by the <em>Angle-Angle Theorem*</em>, they are similar triangles

<u>If they are similar triangles</u>:

   ⇒ their side lengths are proportional to each other

  • let's find x's value

          ⇒ let's set up a proportion

                 \frac{A'B}{AB} =\frac{A'C'}{AC} \\\frac{30}{x+30} =\frac{14}{22} \\14(x+30) = 30*22\\14x + 420 = 660\\14x = 240\\x = 17.143

  • let's find y's value

          ⇒ let's set up a proportion

                 \frac{BC'}{BC} =\frac{A'C'}{AC} \\\frac{y}{y+15} =\frac{14}{22} \\22y=14(y+15)\\22y=14y+210\\8y=210\\y=26.25

<u>Answer:</u>

  • <u>x= 17.143</u>
  • <u>y = 26.25</u>

Hope that helps!

#LearnwithBrainly

 

5 0
2 years ago
2(2x+1)=4x+2 infinite or none
fiasKO [112]
2(2x + 1) = 4x + 2

4x + 2 = 4x + 2

All real numbers are solutions :)
6 0
3 years ago
Read 2 more answers
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