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Olenka [21]
3 years ago
6

In science class, Polly learned that trees help make the oxygen that people breathe. One tree makes about 250 pounds of oxygen e

ach year. Polly wonders how much oxygen the trees on her street make. When she gets home, she counts 32 trees on her street. How many tons of oxygen do they make in a year?
Mathematics
2 answers:
Fantom [35]3 years ago
6 0

Answer:

They make 4 approximately tons of oxygen each year.

Step-by-step explanation:

( 250lbs × 32 ) ÷ 2000 = 4t

250 pounds because each tree makes about 250 pounds of oxygen a year.

× 32 because there are 32 trees, so they'll make 32 times more oxygen than one tree.

÷ 2000 because before that everything was in pounds, and the question asks about tons. There are 2000 pounds in a ton, so you divide by 2000 to get the answer, which is 4 tons.

Anarel [89]3 years ago
5 0

Answer:

4

Step-by-step explanation:

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vladimir1956 [14]

Answer: 105

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6 0
4 years ago
Please i need help on this quietion ASAP!!!!!!!
crimeas [40]

Answer:

1 & 4 are proportional to each other, if that helps at all!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the solution to the following system of equations?<br> x - 2y = 5<br> -x + y = 3
Rzqust [24]

Answer:

x = -11 and y= -8 is the solution to the system

Step-by-step explanation:

Given:

x - 2y = 5    let it be equation (i)

-x + y = 3     let it be equation (ii)

To find:

x = ?

y = ?

Solution:

The equations are given to us from which we are supposed to find the values of x and y

Taking first equation which is

x - 2y = 5    

adding 2y on both sides

x - 2 y + 2y = 5 + 2y

x = 5 +2y                   ............................(iii)

Now putting this value in equation (ii)

which is

-x + y = 3

Putting value gives

-(5 + 2y) + y = 3

-5 -2y+y = 3

-5 - y = 3

adding 5 on both sides

-5 -y + 5 = 3 + 5

-y = 8

Multiplying both sides by (-1)

-y(-1) = 8 * (-1)

y = -8

Now we have equation (iii) which is

x = 5 + 2y

putting the value of y in it

x = 5 + 2*(-8)

x = 5 -16

x = -11

so the solution to the system is

x = -11 and y= -8


8 0
4 years ago
Juanita and Stephanie went to a clearance sale at a clothing store. Juanita bought 4 blouses and 3 skirts for a total of $ 72 .
Inessa05 [86]
4b+3s=72
6b+3s=96
Multiply the second equation by -1
-6b-3s=-96
Now you can cross out the +3s -3s
-2b=-24
Divide both sides by -2
b=12
s=8
So blouses cost $12 each and skirts cost $8 each
4 0
3 years ago
Solve for x: -4(3x − 2) = 6x + 2
stepladder [879]

Answer:

x = 1/3

Step-by-step explanation:

-4(3x − 2) = 6x + 2

Distribute

-12x +8 = 6x +2

Add 12x to each side

12x-12x+8 = 6x+2+12x

8 = 18x+2

Subtract 2 from each side

8-2 = 18x+2-2

6 = 18x

Divide each side by 18

6/18 = 18x/18

1/3 =x

4 0
3 years ago
Read 2 more answers
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