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Llana [10]
3 years ago
8

If ray earns $120 for 15 hours of work, how much will he earn for 20 hours of work at the same rate

Mathematics
1 answer:
ss7ja [257]3 years ago
6 0

Find his rate:

120 / 15 = $8 per hour

Multiply the rate by hours:

$8 x 20 hours = $160

He will earn $160

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Is (-2, 6) a solution to this system of linear equations? (HINT: Substitute x
Serggg [28]

Answer:

1st Equation: -8x + y = 22

At (-2,6)

(-8*-2)+ 6 =16+6= 22: That is correct

2nd Equation: -8x - y =10

At (-2,6)

(-8*-2)-6= 16-6= 10: That is correct

Both are correct.

Hope it helps you.

5 0
3 years ago
The result of adding a complex number to its conjugate is “an integer/a pure imaginary number/a real number/a whole number” and
sineoko [7]

Answer:

If Z is a complex number:

Z = a + b*i

where a and b are real numbers, and i is an imaginary number.

Then "a" is the real part.

"b*i" is the imaginary part.

The conjugate of Z is:

Zc = a - b*i

So the sign of the imaginary part changes.

Then:

Sum:

Z + Zc = (a + bi) + (a - bi) = 2*a + 0 = 2*a

and remember that a is a real number, then 2*a is also a real numer.

The correct answer is "A real number".

Difference:

Z - Zc = (a + bi) - (a - bi) = 2b*i

and this is a pure imaginary number, so here the correct answer is: "a pure imaginary number"

6 0
3 years ago
Manuel baked 30cookies.his family ate c them.using c, write an expression for the number of cookies that remained
makkiz [27]
30, they was buuuuuuuurnt
nah but 30-1
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3 0
3 years ago
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answers to these? i’m sorry it’s a lot but 65 points and brainliest to the first person who answers but they have to be right i’
WARRIOR [948]

Answer:

Do you know Mathwa y it’s a site of math that does all the work for u it even can put words in the problem. I had the same work as u and I did it all there

Step-by-step explanation:

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3 years ago
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The correct answer is (D) ,I just took this quiz ,hope this helps!
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