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3 years ago

4x + 2y = 32 5x - 2y = 31

Mathematics

1 answer:

9966 [12]3 years ago

8 0

Answer:

Step-by-step explanation:

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Which of the following is a natural source of carbon emissions

Tpy6a [65]

Hey mate...

Ur answer to this question is... burning of fossil fuels lead to emmision of carbon dioxide.

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3 years ago

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Find the sum 49+50+51+52+...+141+142

gayaneshka [121]

Answer:

8977

Step-by-step explanation:

Hello,

$49+50+51+52+...+141+142\\\\=(48+1)+(48+2)+(48+3)+(48+4)+...+(48+93)+(48+94)\\\\=48\times 94+(1+2+3+4+...+93+94)\\\\=48\times 94 + \dfrac{94\times 95}{2}\\\\=47(48\times 2+95)=47\times 191=8977$

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3 years ago

A car traveled 180 miles at a constant rate.

cestrela7 [59]

Answer/Step-by-step explanation:

A. Distance travelled at constant rate = 180 miles

Rate of travel (r) = distance travelled (d) /time (t)

Travel time (hrs) ==> rate of travel (miles/hr)

5 ==> 180/5 = 36

4.5 ==> 180/4.5 = 40

3 ==> 180/3 = 60

2.25 ==> 180/2.25 = 80

B. t = time travelled in hrs,

r = rate (miles/hr)

d = distance travelled = 180

Therefore, rate travelled for t hours would be:

$r = \frac{180}{t}$

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3 years ago

16. Tyler ate 42 grapes from a bowl.

ddd [48]

90-42=58

58/90 = 0.644444444.......

So the percent ROUNDED is 64 1/4%

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3 years ago

I need help. A building with a height of 48 m casts a shadow that is 30 m long. A person standing next to the building casts a s

lutik1710 [3]

Answer:

1.28 m

Step-by-step explanation:

48/30 = x/.8

cross multiply

30x = 48(.8)

30x = 38.4

x = 38.4/30

x = 1.28 m

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3 years ago