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Leviafan [203]
3 years ago
7

Find the difference. -7-(-5)

Mathematics
2 answers:
Dvinal [7]3 years ago
7 0

Answer:

Remember: minus a minus is a plus:

=11

Step-by-step explanation:

AnnZ [28]3 years ago
5 0

Answer:

-2

Step-by-step explanation:

-7 - (-5)

-7 + 5

-2

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How many years will it take for a sum of money to double at 10% compounded annually
Bond [772]

Answer:

t=7.27 years

Step-by-step explanation:

Let the money be p and t will be the number of years that will be needed for the money to get double.

ATQ, 2p=p*(1+0.1)^t

2=(1.1)^t

log(2)/log(1.1)=t, t=7.27

5 0
3 years ago
Last year, 31 2 acres of strawberry fields produced approximately 14,700 pounds of strawberries. This year the number of acres p
USPshnik [31]

So in 5 acres of land produces 21,000 pounds of strawberries.

Step-by-step explanation:

Step 1:

Last year, 3\frac{1}{2} acres i.e 3.5 acres produced 14,700 pounds of strawberries. So we need to determine how many strawberries were produced per acre.

To do this we divide the total number of strawberries produced by the number of acres it was produced in.

The number of strawberries produced per acre= \frac{14,700}{3.5} = 4,200 pounds.

Step 2:

To determine the number of strawberries in 5 acres of land, we multiply the number of strawberries per acre by the number of acres.

The number of strawberries produced in 5 acres= 5(4,200) = 21,000 pounds.

So in 5 acres of land produces 21,000 pounds of strawberries.

5 0
3 years ago
If a boy 5 feet tall casts a shadow 14 feet long, what will be the length of the shadow of a tree that is 25 feet high?
klemol [59]

Answer:

70 feet

Step-by-step explanation:

This problem can be answered by using proportions based on similar triangles.

Notice that a person and its shadow on the ground form a right angle (therefore they can be considered the two "legs" of a right angle triangle)

The same runs for the tree and its shadow.

Since the inclination of the rays of the sun are the same at the same time for both objects (the boy and the tree), their hypothenuses form the same angles with the ground and therefore belong to similar triangles.

We can create the following proportion to solve for the shadow of the tree (ST) using the information provided: the height of the boy (HB), the shadow of the boy (SB), and the height of the tree (HT)

\frac{SB}{HB} =\frac{ST}{HT}\\\frac{14}{5} =\frac{ST}{25}\\\frac{ST}{25}=\frac{14}{5} \\ST=\frac{14*25}{5}\\ST=70\,\,ft

6 0
4 years ago
Simplify: 5c(3c2)3? MAP Testing
34kurt

Answer:

45c with an exponent of 3

Step-by-step explanation:

3 0
3 years ago
Which factorization is equivalent to this expression?
grandymaker [24]

Answer:

B.

Step-by-step explanation:

81x - 36 (divide by 9)

9(9x - 4)

Can I get brainliest

7 0
4 years ago
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