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amid [387]
2 years ago
7

2

Mathematics
1 answer:
zhenek [66]2 years ago
7 0

Answer:

Just substitute the values in!
(-5/9) + (-4/3) - 2/3 = - 5/9 - 12/9 - 6/9 = -23/9.

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Laura is 12 years old witch 6/7 of her brothers age how old is her brother
sweet [91]

Answer:

14

Step-by-step explanation:

12:6=2

12+2=14

so her brother it's 14 years old

3 0
3 years ago
An aircraft factory manufactures airplane engines. The unit cost (the cost in dollars to make each airplane engine) depends on t
Juliette [100K]

Answer:

Minimum unit cost = 5,858

Step-by-step explanation:

Given the function : C(x)=x^2−520x+73458

To find the minimum unit cost :

Take the derivative of C(x) with respect to x

dC/dx = 2x - 520

Set = 0

2x - 520

2x = 520

x = 260

To minimize unit cost, 260 engines must be produced

Hence, minimum unit cost will be :

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7 0
3 years ago
Evaluate the Expression z(z-7) when z=10
Alchen [17]

Answer:

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Step-by-step explanation:

z(z-7)

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Parentheses first

10 (3)

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3 0
2 years ago
Read 2 more answers
A class of 28 students has 12 girls. What is the ratio of girls to boys
DochEvi [55]

Answer:

3 girls for every 4 boys

Step-by-step explanation:

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8 0
3 years ago
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Exact Form:

11

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Decimal Form:

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