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andrezito [222]
3 years ago
12

The midpoint between points (-3, 10) and (5,0) is (x, 5). What is x?

Mathematics
1 answer:
Sergio039 [100]3 years ago
6 0
To find the midpoint, you add the x values and divide by 2.

(-3 + 10) /2
7/2 = 3.5

So x = 3.5
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4 0
2 years ago
Please help on two math questions. I don’t understand how to do them.
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When you represent intervals on the number line, you're including full dots, excluding empty dots, and you're considering numbers highlighted by the line.

In the first case, you've highlighted everything before -2 (full dot, thus included), and everything after 1 (empty dot, excluded). So, the set would be

x\leq -2 \lor\ x>1

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(-\infty,-2]\cup (1,\infty)

In the second case, you are looking for all numbers between -3 and 5. This interval is symmetric with respect to 1: you're considering all numbers that are at most 4 units away from 1, both to the left and to the right.

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3 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

36-y = 9-0.1y

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0.9y = 27

y = 27/0.9

y = 30

x = 36-y

x = 36-30

x = 6 kg

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3 years ago
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Answer:

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Step-by-step explanation:

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julia-pushkina [17]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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