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Ber [7]
3 years ago
10

What is the steps and answer to do this question -x-7y=9 -x+9y=-23

Mathematics
1 answer:
Hitman42 [59]3 years ago
7 0
The answer is 23.

Good luck :)
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10.) Kelly is flying a kite to which the angle of elevation is
jarptica [38.1K]

Answer:

61.08m

Step-by-step explanation:

Let " l " be the length of the rope and " θ " the angle at which it is raised. In other words:

  • l = 65m
  • θ = 70°

As you can see, there has been made a right angle triangle. So:

sin70 =  \frac{h}{l}  \\ h = l \times sin70 \\ h = 65 \times 0.9397 = 61.08 \\ h = 61.08

So the kite is approximately 61.08m above the ground.

In order to find the sin70° i used a calculator.

3 0
3 years ago
Which expression give the prime factorization of 80?
liq [111]

Answer:

Prime factorization: 80 = 2 x 2 x 2 x 2 x 5 which can also be written 80 = 2⁴ x 5.

Step-by-step explanation:

hope this helped <3

7 0
3 years ago
Read 2 more answers
A home builder needs to cover the rectangular floor of a closet with a carpet the closet is 2 yards long and 2/3 of a yard wide
Crank

Your Answer is 4 Yards

Step-by-step explanation:

2/3 yards is 2 feet

2 yards is 6 feet

2 times 6 feet is 12 foot e.g. (2 x 6 =  12)

12 feet is 4 yards.

Formula (L x W = A)

L = length

W = Width

A = Area

<em>Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!</em>

7 0
2 years ago
jack drove at an average speed of 47.3 miles per hour for 2.5 hours. how far did he drive? 118.25 49.8 44.8 18.92
Gekata [30.6K]
The answer is 47.3 x 2.5= 118.25
8 0
3 years ago
Read 2 more answers
What is the negative inverse of -0.3
TEA [102]

n\to negative\ of\ n=-n\\\\n\to inverse\ of\ n=\dfrac{1}{n}\\\\n\to negative\ inverse\ of\ a=-\dfrac{1}{a}\\\\-0.3=-\dfrac{3}{10}\\\\negative\ inverse:\\\\-\left(-\dfrac{10}{3}\right)=\dfrac{10}{3}

3 0
3 years ago
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