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Mama L [17]
3 years ago
9

What is the surface area of a square pyramid with a base length of 8 and a height of 12

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

256

Step-by-step explanation:

b^2 + 2bl

8^2 + 2(8)(12)

64 + 16(12)

64 + 192

= 256

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Nady [450]
There are 7 chairs in each row length.
Step-by-step explanation:
Let number of chairs in 1 row be 'x'.
Let total number of chairs be 'y'.
Given:
Hue can form 6 rows of a given length with 3 chairs left over.
It means that Total number of chairs is equal to chairs in 1 rows multiplied by number of rows which is 6 plus number of chairs which is left which is 3.
Framing in equation form we get.

Also Given:
Hue can form 8 rows of that same length if she gets 11 more chairs.
It means that Total number of chairs is equal to chairs in 1 rows multiplied by number of rows which is 8 minus number of chairs which is required more which is 11.
Framing in equation form we get.

From equation 1 and equation 2 we can say that L.H.S is same.
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Using Subtraction and Addition property we get;

Now Using Division Property we will divide both side by 2.

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8 0
3 years ago
What is 2x(x+5)=4 using the quadratic formula
antoniya [11.8K]
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4 0
3 years ago
A colleague has been tutoring six students in 11th grade to prepare for the ACT. This colleague has asked you to evaluate the pe
marissa [1.9K]

We have been given that a colleague has been tutoring six students in 11th grade to prepare for the ACT. Student scores were as follows: 20, 18, 16, 15, 23, 20. We are asked to find the mean of the ACT scores.

We will use mean formula to solve our given problem.  

\text{Mean}=\frac{\text{Sum of terms}}{\text{Number of terms}}

\text{Mean}=\frac{20+18+16+15+23+20}{6}

\text{Mean}=\frac{112}{6}

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Upon rounding to nearest whole number, we will get:

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3 years ago
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navik [9.2K]

Step-by-step explanation:

option C

hope it helps

thank you

3 0
3 years ago
Please help 6th grade math please please help
sweet-ann [11.9K]

Step-by-step explanation:

the beginning number is the beginning of your range the last number is the end of your range

4 0
3 years ago
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