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Eva8 [605]
3 years ago
10

Need help to solve 7/6r = -1/2

Mathematics
2 answers:
lara [203]3 years ago
4 0

Answer:

r= 0.4288

Step-by-step explanation:

fredd [130]3 years ago
3 0

Answer:

r = -3/7.

Step-by-step explanation:

To solve this equation, we multiply both sides by 6/7. This is the reciprocal of the coefficient in r (7/6) and will "cancel out" the expression. So:

-1/2 x 6/7 = -6/14 = -3/7.

As such, r = -3/7.

I hope this helps!

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A and B together complete a work in 20days. They worked together for 5days and B leaves. How long will A takes to finish the rem
andreev551 [17]

Answer:

27 days

Step-by-step explanation:

A alone, rate per day = 1/36

A and B together, rate per day = 1 / 20

Total Workdone for 5 days :

1/ 20 * 5 = 5 / 20 = 1/4

Fraction of work left :

1 - 1/4 = 3/4

3 / 4 * 36 /1

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2 years ago
Substitution for -3x+y=-9
shtirl [24]

Answer:

y=3x-9

Step-by-step explanation:


4 0
2 years ago
a metal worker has a metal alloy that is 20% copper, and another metal alloy that is 60% copper. How many kilograms (kg) of each
emmainna [20.7K]

Let X = the 29% alloy and Y = the 60% alloy.

They want a total of 80kg, so you have X +Y = 80

Rewrite that to get X = 80-Y


You also want 0.20X + 0.60Y = 0.52(80)

Replace X with 80-y:

0.20(80-y) + 0.60y = 0.52(80)

Simplify:

16 - 0.20y + 0.60y = 41.6

Combine like terms:

16 +0.40y = 41.6

Subtract 16 from each side:

0.40y = 25.6

Divide both sides by 0.40

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Now you have Y replace y with 80 in X = 80-Y

X = 80 - 64

X = 16

They need 64 Kg of the 60% alloy and 16 Kg of the 20% alloy.


5 0
2 years ago
Which is not a true statement about the transformation shown below?
IrinaVladis [17]

Answer: C: The orientation of the figure stayed the same

Step-by-step explanation:

Everything else is true

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3 years ago
What is the equation for a line
USPshnik [31]

Answer:

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x represents the independent variable (what you are changing).

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4 0
2 years ago
Read 2 more answers
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