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Tpy6a [65]
3 years ago
7

How can you solve y=-2x+20 by substitution?

Mathematics
1 answer:
levacccp [35]3 years ago
8 0

Answer:

subtract from both sides and then multiplying both sides

Step-by-step explanation:

how can you solve y = -2x + 25 by subtraction

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An escalator lifts people to the second floor of a building, 25 ft above the first floor. The escalator rises at a 30o angle. To
melamori03 [73]

Answer:

a person travel 50 ft from the bottom to the top of the escalator

Step-by-step explanation:

An escalator lifts people to the second floor of a building, 25 ft above the first floor. The escalator rises at a 30 degree angle

The escalator forms a right angle triangle

opposite to 30 degree angle is 25 feet. to find the distance from the bottom to the top of the escalator we find the hypotenuse

let x be the hypotenuse

sin(theta)=\frac{opposite}{hypotenuse}

sin(30)=\frac{25}{x}\\x sin(30)= 25\\x=\frac{25}{sin(30)} \\x=50\\

a person travel 50 ft from the bottom to the top of the escalator

6 0
2 years ago
Select the term that does not describe the triangle. Select all that apply.
LenaWriter [7]

Answer:  I believe its obtuse

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A bag contains 56 marbles: 7 red, 8 green, 11 yellow, 17 brown, and 13 blue.
Neko [114]
Salutations!

<span>A bag contains 56 marbles: 7 red, 8 green, 11 yellow, 17 brown, and 13 blue.

If a marble is chosen at random, what is the probability that the marble is green?

Probability means an occurrence of a chance

(Probability of getting green marble) = </span>8/56

Simplify tex]8/56[/tex]

The simplified answer would be 1/7

Hope I helped (:

Have a great day!
4 0
3 years ago
Read 2 more answers
marks watering can will only hold a maximum of 10.5 litres. the ratio of plant food to water is 1.6. how many litres of plant fo
sergij07 [2.7K]
1+6=7
10.5/7=1.5
1x1.5=1.5
6x1.5=9

1.5 litres of plant food and 9 litres of water
3 0
3 years ago
Prove that: <br>16^4–2^13–4^5 is divisible by 11
myrzilka [38]
If the answer is a whole number when divided by eleven
4 0
3 years ago
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