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alex41 [277]
3 years ago
5

A forest covers 66,000 acres. A survey finds that 0.8% of the forested old-growth trees. How many acres of old-growth trees are

there?
Mathematics
1 answer:
bonufazy [111]3 years ago
5 0

Answer:

528

Step-by-step explanation:

Find 0.8% of 66,000

Do this through the proportional method.

x = unknown value

0.8% / 100

=

x / 66,000

Cross multiply

66,000 x 0.8

52,800

Now, since a percent is always over a 100, divide it by 100.

52,800/100

528

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Evaluate<br><br> -4x + 7 for x = -1
Lunna [17]

Answer:

11

Step-by-step explanation:

-4x + 7 ; x = -1

-4x (-1) + 7

4 + 7 = 11

3 0
3 years ago
Read 2 more answers
15. (NO CALCULATOR) A restaurant took 1/3 of an hour to use 1/5 of a
kotykmax [81]

Answer:

It would take 5/3 or 1 2/3 hours to use a package of napkins.

Step-by-step explanation:

1/3=1/5

2/3=2/5

3/3=3/5

4/3=4/5

5/3=5/5

5/3= 1 2/3

8 0
3 years ago
I need some help pls :'(
Luda [366]

Answer:

a

Step-by-step explanation:

4 0
2 years ago
Which shows the most reasonable way to estimate 3 4/7 (-2 1/12) using compatible fractions
docker41 [41]

Answer:

B). 3 1/2(-2) = -7

Step-by-step explanation:

Let's evaluate the expression so as to be able to get the right estimate.

3 4/7 (-2 1/12)

=3 4/7 (-25/12)

= 25/7 * -25/12

= 25/7 * -25/12

= -625/84

= -7 37/84

Approximately it's equal to ,-7

4 0
3 years ago
What is the sum of 1 2/5 and 5 3/4​
Art [367]

Answer:

7\frac{3}{20}

Step-by-step explanation:

<em>Hey there!</em>

Well to add this we need to pu it in improper form.

7/5 + 23/4

Now we need to find the LCM.

5 - 5, 10, 15, 20, 25, 30

4 - 4, 8, 12, 16, 20, 24, 28

So the LCD is 20.

Now we need to change the 5 and 4 to 20.

5*4 = 20

7*4 = 28

<u>28/20</u>

4*5=20

23*5=115

<u>115/20</u>

Now we can add 28 and 115,

= 143/20

Simplified

7 3/20

<em>Hope this helps :)</em>

4 0
3 years ago
Read 2 more answers
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