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laiz [17]
3 years ago
11

FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) th

ank you very much!!! (90pts)

Mathematics
2 answers:
mixas84 [53]3 years ago
8 0

Answer:

320

Step-by-step explanation:

Well, the volume of a pyramid is 1/3 b * h

What is the height of one of these pyramids? Well, they tell you that it's 10. What is the base? It's 6 * 8 = 48

10 * 48 * 1/3 = 160

Now multiply by 2 because there are two pyramids. One on top and one one bottom. 160 * 2 = 320

sdas [7]3 years ago
5 0

Answer: 320

Step-by-step explanation:

You might be interested in
PERSON GETS 15 POINTZ PLZ HURRY The mean of the list n, n + 3, n+4, n+5, n+6, n+8, n+10, n + 12, n+15 is 11. What is the median?
7nadin3 [17]

Answer:

10

Step-by-step explanation:

To find the value of n we can write:

(n + n + 3 + n + 4 + n + 5 + n + 6 + n + 8 + n + 10 + n + 12 + n + 15) / 9 = 11

(9n + 63) / 9 = 11

9n + 63 = 99

9n = 36

n = 4

The median is n + 6 which is 4 + 6 = 10.

7 0
3 years ago
Read 2 more answers
In desperate need of help​
Anastasy [175]
Answer :2
Explanation:
6 0
2 years ago
Read 2 more answers
A high school sewing club has 11 members. In how many different ways can they choose a president and vice president?
lorasvet [3.4K]
Since the order matters  Person A and B can be chosen as AB (A pres B vice pres) or BA (B president  A Vice president)

When the order matters we are talking about permutations. How many permutations of 11 taken 2 at a time are there.
It can be written like this 11nPr 2
It means start at 11 and multiply by the next lower number 
11 x 10 = 110 ways they can choose.
Extension of the concept:
If there had been three positions President, Vice President, and Treasurer
then it would be 11nPr3  or 11 x 10 x 9
Once again the answer to your problem is 110.
6 0
4 years ago
Read 2 more answers
A line's y-intercept is 3, and its slope is 1.
8090 [49]

Answer:

Standard form for straight line

y = m x + b

If x = 0 then y = b = 3

y = m x + 3

Since m is the slope the requested equation is y = x + 3

3 0
3 years ago
Y=-6x + 5<br> x - y = 5
rodikova [14]

Answer:

y = \frac{-25}{7} or -3.571

x = \frac{10}{7} or 1.429

Step-by-step explanation:

x - y = 5

x = 5 + y

Solve for y:

y =  -6x + 5

y =  -6(5 + y) + 5  Substitute x with 5 + y

y = -6(5) - 6y + 5

y = -30 - 6y + 5

y + 6y = -30 + 5

7y = -25

y = \frac{-25}{7} or -3.571

Solve for x:

x = 5 + y

x = 5 + -25/7

x = \frac{10}{7} or 1.429

4 0
3 years ago
Read 2 more answers
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