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3 years ago

Twenty men can cut thirty trees in four hours. If four men leave the job, how many

Mathematics

1 answer:

Mice21 [21]3 years ago

8 0

Answer:

As in 4 hours , 20 men can cut 30 trees. So, in 1 hour , 20 men can cut 30 trees / 4. So, in 6 hours, 20 men can cut 30 * 6 trees / 4 = 45 trees.

Step-by-step explanation:

done

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Which of these systems of equations has an infinite

zepelin [54]

Answer:

B) -6c + 11d = 20

-5c + 8d = 22

Brainliest plz?

Hope this helps!

3 0

3 years ago

Mofor’s school is selling tickets to the annual dance competition. On the first day of ticket sales the school sold 7 adult tick

zhannawk [14.2K]

The price of one adult ticket is $ 11 and the price of one student ticket is $ 11

<h3><u>Solution:</u></h3>

Given that , Mofor’s school is selling tickets to the annual dance competition.

Let the cost of one adult ticket be $m and the cost of one student tickets be $n.

On the first day of ticket sales the school sold 7 adult tickets and 6 tickets for a total of $143.

$\text { Then, } 7 \times \text { cost of one adult ticket }+6 \times \text { cost of one student ticket }=\$ 143$

7m + 6n = 143 ------- eqn (1)

The school took in $187 on the second day by selling 4 adult tickets and 13 student tickets.

$\text { Then, } 4 \times \text { cost of one adult ticket}+13 \times \text { cost of one student ticket}=\$ 187$

4m + 13n = 187 ------ eqn (2)

We have to find the price of an adult ticket and the price of a student ticket.

Now, let us solve the equations.

Multiply eqn 1 by 4

28m + 24n = 572 ----- eqn 3

Multiply eqn 2 by 7

28m + 91n = 1309 ---- eqn 4

Now subtract eqn 4 from eqn 3

28m + 24n = 572

28m + 91n = 1309

(- )--------------------------------------

– 67n = - 737

67n = 737

n = 11

Plug in n = 11 in eqn 1

7m + 66 = 143

7m = 143 – 66

m = 11

Hence, the cost of one adult ticket is $ 11 and cost of one student ticket is $11

3 0

3 years ago

What is the distance, in a radical form, between the points (5,-6) and (2,5).

iogann1982 [59]

Answer:

L²=(x1-x2)²+(y1-y2)²

L2=(5-2)²+(-6-5)²

L²=3²+(-11)²

L²=9+121

L²=130

L=✔130

4 0

3 years ago

Yasmine estimated the difference of 87.71 and 5.8 by rounding each number to the nearest whole. What was Yasmine's estimate, and

Alex73 [517]

Answer:

Yasmine estimated the difference to be 82. The actual difference is 81.91.

Step-by-step explanation:

The rounded whole number of 87.71 is 88 and the rounded whole number of 5.8 is 6.

So, the difference between the numbers 87.71 and 5.8 by rounding each number to the nearest whole numbers will be

(88 - 6) = 82.

The actual difference between the numbers 87.71 and 5.8 is (87.71 - 5.8) = 81.91.

Therefore, Yasmine estimated the difference to be 82. The actual difference is 81.91. (Answer)

3 0

3 years ago

Debbie has $460 in a savings account that earns 8% annually. If the interest is not compounded, how much interest will she earn

Viktor [21]

Compound interest means that the interest earned each year is added to the principal meaning that future interest is earned from the original amount + past interest.

In this case, it is NOT compounded meaning that we just have to find how much interested is earned in a year and multiply it by 5 years.

8% of $460 is 460*0.08 = 36.8

36.8*5 = 184

The answer is C) $184.00

6 0

4 years ago

Read 2 more answers