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Veseljchak [2.6K]
3 years ago
12

Find the volume of a square pyramid with base edges of 30 cm and a slant height of 39 cm

Mathematics
1 answer:
belka [17]3 years ago
5 0

Answer:

390cm

Step-by-step explanation:

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7th grade math please help me will give brainliest
Alecsey [184]

Answer: 67.27

Step-by-step explanation:

7.1 x 7.1 for the square = 50.41

7.1 divided by 2 = 3.55

3.55 x 4.75= 16.86

Normally here you would divide by 2, but you don’t need two because there is 2 triangles that are the same

Add the 50.41 and the 16.86 and you have your answer!

8 0
3 years ago
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A total of 8,644 people went to the football game. Of thos the visitors side. Of the people sitting on the visitor's side filled
lisov135 [29]
You divide 8644 by 8 which equals 1080.5, but since you can't have half of one person you approximate it to 1080 or 1081.
3 0
3 years ago
A calculator screen shows a number in scientific notation as 4.18E‒8. Write this number in standard form.
Citrus2011 [14]

Answer:

.0000000418

Step-by-step explanation:

So you will start from the decimal and move 8 places to the left.

E-8 is the same as 10^-8 so you will move to the left

If it was E8 you would move to the right 8 places.

6 0
3 years ago
What is the sum of the complex numbers 2 + 4i,and 3 − 7i, where i=-1
Elodia [21]

Answer:

5 - 3i.

Step-by-step explanation:

2 + 4i + 3 - 7i       Bring like terms together:

= 2 + 3 + 4i - 71

= 5 - 3i.

5 0
2 years ago
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What is the value of the expression 9+4n-1 when n = 3?
dangina [55]
Answer: 9+4n-1 = 20


We can solve this by substitution.
Replace n with the value given, 3 (remember 4n means 4 times n):
9 + 4*3 - 1
Then work it out using arithmetic
9+12-1
=20
6 0
2 years ago
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