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BARSIC [14]
3 years ago
12

What is the solution to this system of linear equations?

Mathematics
1 answer:
maria [59]3 years ago
5 0
It’s (-1, 3), I hope this helps! ☺️
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Cubic yards of concrete will be required for 14 parking lot light pole standards
riadik2000 [5.3K]

Using conversion of units and volume of a cylinder, it is found that 23.17 cubic yards of concrete are needed, option D.

The volume of a cylinder of radius r and height h is given by:

V = \pi r^2h

In this problem:

  • We want the volume in cubic yards, thus, the units of radius and height have to be in yards.
  • 32 inches in diameter, thus 16 inches of radius. Since each inch has 0.0278 yards, this is a radius of 0.44 yards, thus r = 0.44.
  • Height of 8 feet, and since each feet has 0.33 yards, this is a height of 2.67 yards, thus h = 2.67
  • 14 poles, thus the volume is multiplied by 14.

Then:

V = 14\pi(0.44)^2(2.67) = 23.17

23.17 cubic yards of concrete are needed, option D.

A similar problem is given at brainly.com/question/22789697

3 0
2 years ago
Expand (- 3a - 5x) (- 2b - 4y).​
vekshin1

Answer:  −3a(−2b−4y).−5x(−2b−4y). to this  

6ab+12ay+10bx+20xy

Step-by-step explanation: hope this helps :)

8 0
3 years ago
Read 2 more answers
Write a word problem for y=10/x
Bess [88]

Answer: farmer ted has ten tomatoes and needs to divide them among five people how many tomatoes does each person get?

Use the equation y = 10/x for your answer.

X = the 5 people and y = the amount of tomatoes

4 0
3 years ago
I need help. Please show work
telo118 [61]
◆ Area related to Circles ◆

Hey !!

Check the attachment.
Hope it helps you :)

7 0
2 years ago
In a recent survey, 64 % of the community favored building a police substation in their neighborhood. If 14 citizens are chosen,
kozerog [31]

Answer: 0.1840

Step-by-step explanation:

The binomial probability formula :-

P(X)=^nC_x\ p^x(1-p)^{n-x}, here n is the number total of trials , p is the probability of getting success in each trial and P(x) is the probability of getting success in x trial.

Given : The probability of the community favored building a police substation in their neighborhood = 0.64

If 14 citizens are chosen, then the probability that exactly 8 of them favor the building of the police substation will be :-

P(8)={14}^C_{8}\ (0.64)^{8}(1-0.64)^{14-8}\\\\=\dfrac{14!}{8!6!}\times(0.64)^8(0.36)^{6}\\\\0.183996740126\approx0.1840

Hence, the probability that exactly 8 of them favor the building of the police substation = 0.1840

5 0
3 years ago
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