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katrin [286]
2 years ago
15

If x=7 and y=−2, evaluate the following expression:2xy​

Mathematics
2 answers:
antoniya [11.8K]2 years ago
6 0

Answer:

-28

Step-by-step explanation:

2xy=2(7)(-2)=14(-2)=-28

anzhelika [568]2 years ago
6 0

Answer:

-28

Step-by-step explanation:

2xy\\\\2(7)(-2)\\\\2*7*-2\\\\14*-2\\\\\boxed{-28}

Hope this helps.

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Which represents the solution(s) of the equation x2 = 289?
sergeinik [125]

Answer:

B) x = +/- 17

Step-by-step explanation:

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3 years ago
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To prepare for the school fundraiser, juanita pays $5 for 100 cups. She also buys Fruit juice for $.50 each. Write an equation t
ANTONII [103]

Answer:

f(x) = 0.5x + 5

Domain: positive whole numbers

Range: f(x) ≥ 5

Step-by-step explanation:

Let's x denote the total number of fruit juice.

This means that if $0.5 for each fruit juice, then the total cost incurred for fruit juice would be $0.5x.

Since she incurred a cost of $5 for 100 cups and $0.5 for each fruit juice, then the total cost, f(x), would be:

f(x) = 0.5x + 5

The domain would be all positive whole numbers (it is restricted to positive whole numbers because a fruit juice can't be "negative" neither can it be "half").

The range is all numbers equal or greater than 5. This is because, even if she does not eventually get fruit juice, she will still incur a cost of 5usd for cups.

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2 years ago
PLEASE PLEASE PLEASE HELP
Eduardwww [97]

first make two triangles using M , so there iwll be 90-45-45, and 30-60-90 then use the side rules of those special triangles

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3 years ago
What Is this number in standard form two hunde es seven thousand, forty Eight
zhenek [66]
207,048 is the answer :)
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Help asap pls and thx
vazorg [7]

Step-by-step explanation:

from what I can see there are 2 options to make the 2 triangles congruent :

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so, either

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or

5x = 4x + 3

and

5x - 2 = 3x + 10

for the first

5x = 3x + 10

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control

5x - 2 = 4w + 3

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correct.

for the second

5x = 4x + 3

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5×3 - 2 = 3×3 + 10

15 - 2 = 9 + 10

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2 years ago
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