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MariettaO [177]
3 years ago
15

If x=9 and y=−3, evaluate the following expression:20−5y+2x

Mathematics
2 answers:
Olegator [25]3 years ago
8 0

Answer:

The answer is 53.

Explanation:

x = 9

y = -3

20 - 5y + 2x \\ 20 - 5( - 3) + 2(9) \\ 20 + 15 + 18 \\ 35 + 18 \\ 53

pentagon [3]3 years ago
4 0

Answer:

53

Step-by-step explanation:

20-5y+2x

20-5(-3)+2(9)

20--15+18

cancel out the negative signs

20+15+18

=53

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the temperature is already at 40 degrees it rises 4.5 degrees per minute how long will it take to get to 76 degrees​
Andrei [34K]

Answer:

It will take 8 minutes for the temperature to reach 76°

Step-by-step explanation:

The expression for the total temperature in degrees at time t can be written as;

T=I+EM

where;

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This can also be written as;

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replacing;

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4 years ago
A game room has a floor that is 120 feet by 75 feet.A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet.Wha
erik [133]
We know,
1 unit : 5 feet

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