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IceJOKER [234]
3 years ago
14

Find the difference. (3-4x)-3(2.4x-7)

Mathematics
1 answer:
murzikaleks [220]3 years ago
5 0

(3-4x)-3(2.4x-7)

3-4x-7.4x+21

-11.4x+18    

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Margo drove for 3.85 at an average speed of 61.4. Estimate the total distance that she drove.
makkiz [27]

About 245.6 miles. This is because 3.85 is about 4 hours and that times 61.4 is 245.6miles

3 0
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Solve the system of equations by graphing: x + 2y = 4 and 4x - 2y = 16
sp2606 [1]
The answer is a) (4,0) hope this helps.
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Of all the people that attend movies 67% are in the 12-29 age group at one theater 400 people attend a showing of a certain movi
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8 0
3 years ago
What’s the missing length
mezya [45]

Answer:

a=9in

Step-by-step explanation:

Pythagoreans Theorem

a^2+5.6^2=10.6^2

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(take square root of both sides)

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7 0
3 years ago
Pure copper was mixed with a 10% copper alloy to produce an alloy thát was 25% copper. How much of the pure copper and how much
lora16 [44]

Answer:

6kg pure copper and 30 kg 10% copper was mixed to give 36kg of 25% alloy

Step-by-step explanation:

Here, we want to produce 36 kg of 25% alloy

Let the Pure copper be x kg while 10% alloy be y kg

Pure copper is simply 100% copper

Thus;

x + y = 36 •••••(i)

Then;

100% of x + 10% of y = 25% of 36

= x + 0.1y = 9 •••••• ii)

From i x = 36-y

from ii, x = 9-0.1y

Equate both x

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x = 36-y

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x = 6 kg

8 0
2 years ago
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