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nekit [7.7K]
2 years ago
15

(50 POINTS AND BRAINLIEST TO BEST)

Mathematics
1 answer:
Nana76 [90]2 years ago
6 0

a) Cube area = 6a^2

a = 6(5.25)^2

5.25 * 5.25 = 27.5625 * 6 = 165.375

Rounded, thats 165.38

b) Rectangular prism area = 2(wl + hl + hw)

Lets say l = 6.8, w = 8.2, h = 10

It equals about 441.52

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den301095 [7]
Answer = a=12/7=1.714
6 0
2 years ago
The perimeter of a rectangular slab of concrete is 24 meters. If the length of the
sergejj [24]

perimeter = 2L +2W

the problem states the length ( L) is 2 meters longer then width, so L = w+2

so perimeter =2(w+2) +2w

24 = 2(w+2) +2w

24 = 2w+4 +2w

24 = 4w+4

20=4w

w=20/4 = 5

3 0
3 years ago
Suppose Q and R are independent events. Find P(Q and R). P(Q) = 0.87, P(R) = 0.51
eimsori [14]

Answer:

0.4437

Step-by-step explanation:

First we will define independent events.

Two events are said to be independent when the occurrence of one event doesn't affect the probability of occurrence of second event.

Given

P(Q)=0.87

and  

P(R)=0.51

The probability of independent events is given as:

P(Q∩R)=P(Q)*P(R)

=0.87*0.51

=0.4437

So the probability of Q and R is 0.4437 ..  

5 0
2 years ago
Please help! I will mark brainliest if correct!
Sergeeva-Olga [200]
There is no solution so C.
4 0
3 years ago
I need help, along with an explanation, for this question.
Aleksandr-060686 [28]

Answer:

1.  -9

2.  -15

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

8 0
2 years ago
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