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Firlakuza [10]
3 years ago
7

(3x-70) (3y+40) 120 x

Mathematics
1 answer:
Andru [333]3 years ago
8 0
(3y+40)+(3x-70)=180

3y+3x-30=180
3y+3x=210
3(y+x)=210
y+x=70
x=70-y

meanwhile 180-120=x therefore x=60
therefore
60=70-y y=10
so x=60 y=10
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A rubber ball has a radius of about 2.86 in. Can the ball be packaged in a box shaped like a cube with a volume of 125 in3?
Sonja [21]

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4/3 * 3.14 * 2.86^3 = 97.99 cubic inches

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6 0
3 years ago
Jonas types 560 words in 20 mins. How many words can he type in one hour
dalvyx [7]

Answer:

1680 words.

Step-by-step explanation:

There are 60 minutes in an hour. So all you need to do it 560 + 560 + 560.

I say this because he types 560 word in 20 minutes..20+20+20 is 60 so that means you have to add 560, 3 times as well.


Hope this helped! :)

5 0
3 years ago
The average speed to go by car from home to college is 30 miles per hour. The average speed to go back home from college is 20 m
Levart [38]

Answer:

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Step-by-step explanation:

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To do the second part, we follow the same process, but replace 60 with 40 for distance.

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We can add the total distance and divide by total time to find the average.

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Step-by-step explanation:

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2 years ago
Read 2 more answers
I need help please! ​
Sophie [7]

Answer/Step-by-step explanation:

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AD = (x + 8) cm

BC = (x + 5) cm

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42 = ½((x + 8 + x + 5)*x

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Multiply both sides by 2

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84 = 2x² + 13x

2x² + 13x = 84

Subtract both sides by 84

2x² + 13x - 84 = 0

4 0
2 years ago
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