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almond37 [142]
3 years ago
7

2. PLZZZ help math (O_O)

Mathematics
1 answer:
Airida [17]3 years ago
6 0

Answer:

1) 3

2) 26

3) 50

4) 20

5)20

Step-by-step explanation:

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Addie bought lunch to go from a sandwich shop. She spent $12.00 for a $10.00 meal. What percent was the tip?
horsena [70]

Answer:

She gave a $2.00 tip witch would be %20 of her meal cost.

Step-by-step explanation:

    </3 PureBeauty

4 0
3 years ago
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Use the elimination method to solve the system of equations. Choose the
sveticcg [70]

Answer:

C. (2, 1)

Step-by-step explanation:

-3y = x-5

x+ 5y = 7

Subtract x from both sides in the first equation. Write the second equation below it.

-x - 3y = -5

x + 5y = 7

Add the two equations above.

2y = 2

Divide both sides by 2.

y = 1

Substitute y with 1 in the second original equation and solve for x.

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x + 5 = 7

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3 years ago
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Use the function r=n-7 to find the value of r when n =10​
harkovskaia [24]

Answer:

r=3

Step-by-step explanation:

if n=10

r=n-7

r=(10)-7

r=3

8 0
3 years ago
If C = 2m2 + m and D = 2 – 6m + 2m², find an expression that equals<br> 2C - 2D in standard form.
lidiya [134]
C = 2m^2 + m
D = 2 - 6m + 2m^2

2C = 2(2m^2 + m) = 4m^2+2m
2D = 2(2-6m+2m^2) = 4-12m+4m^2

2C - 2D =
4m^2+2m-(4-12m+4m^2) =
4m^2+2m-4+12m-4m^2 =
0m^2 + 14m -4 =
14m - 4
3 0
3 years ago
Could you help please..
Nitella [24]
Since she needs 3 1/2 for 5, and you need to find one batch, get 3 1/2 and divide it by 5. Change 3 1/2 to an improper fraction (7/2). Now use KCS (keep change switch) Keep the 7/2, change division to multiplication, and switch 5/1 to 1/5. (7/2)•(1/5)
4 0
3 years ago
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