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Natali5045456 [20]
3 years ago
9

It takes 15 men working steadily 4 days to dig the foundation for a new apartment. how many days would it have taken 25 men work

ing at the same rate to dig the foundation? express your answer as a decimal to the nearest tenth.
Mathematics
1 answer:
andre [41]3 years ago
3 0
By proportion that would be  15/25  * 4  =  2.4 days
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Select the correct answer.
SCORPION-xisa [38]

Answer:

d. 18

Step-by-step explanation:

g(x)=3x-3

3(7)-3

21-3

=18

7 0
3 years ago
The twenty-six coins in my pocket are all dollar coins and quarters, and they add up to seventeen dollars in value. How many dol
Law Incorporation [45]

Currency such as dollars can come in various forms such as dimes, quarters, pennies, and nickels.

The number of quarter coins is 12 and the number of dollar coins is 14 coins.

Let's represent:

The number of 1 dollar coin = d

The number of 1 quarter coin = q

The twenty-six coins in my pocket are all dollar coins and quarters. The algebraic equation for this statement above is =

d + q = 26 ........ Equation 1

Making d the subject of the formula

d = 26 - q

1 dollar coin = $1

1 quarter = $0.25

The value of the dollar and nickel coins is seventeen dollars. The algebraic expression for this statement is :

$1 x d + $0.25 x q = 17

d + 0.25q = 17.................Equation 2

Substitute 26 - q for d in Equation 2

26 - q + 0.25q = 17

Collecting like terms

26 - 17 = q - 0.25q

9 = 0.75q

Divide both sides by 0.75

9/0.75 = 0.75q/0.75

q = 12 coins

Solving for number of dollar coins

d = 26 - q

q = 12

d = 26 - 12

d = 14 coins

Therefore, the number of quarter coins is 12 and the number of dollar coins is 14 coins.

To learn more, visit the link below:

brainly.com/question/22799498

7 0
3 years ago
PLSSSSSSSSSSSSSSSSSSSSSS HELP
jek_recluse [69]
2a + 3b, 6ab, And 2b + 3a
5 0
3 years ago
Read 2 more answers
ANSWER PLEASEEEE DXXX
Elenna [48]

Answer:

i say A because you cant add W with 12 nor 16 and its not D because the W needs to be squared

3 0
3 years ago
El Generico public high school got a new flagpole. But they completely forgot to buy a cord and NO ONE knows how tall the flagpo
Pie
In measurement problems such as these, we can use proportional relationships to determine the length or measure of triangular sides.This works because the two figures are similar. Our proportion is going to have a variable since we do not know the height of one of the flagpoles. It will be set up as such: 

\frac{5}{8} = \frac{x}{32}

We cross multiply, then divide to solve this proportion.

32 x 5 = 160. 

160/8 = 20. 

This means the height of the flagpole is 20 feet high. To fit the height of the flag pole, the cord the school should buy for the flagpole should be 20 feet long. 

5 0
4 years ago
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