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melomori [17]
2 years ago
11

(Please help!!!)

Mathematics
1 answer:
Misha Larkins [42]2 years ago
4 0
The correct answer is D. 12x^2-9x
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Find the sum of the interior angle measures of a 5-gon.
Irina-Kira [14]

Answer:

540°

Step-by-step explanation:

The sum of interior angles in a polygon is equal to 180(x-2) where x is the number of sides. Since there are 5 sides, 180(5-2)=540°.

8 0
3 years ago
If 5 tractors can plow a field in 4 hours, how many hours will it take 3 tractors to plow the field?
Mrac [35]

The number of hours required for 3 tractors to plow the field is 2.4 hours

<em><u>Solution:</u></em>

Given that 5 tractors can plow a field in 4 hours

We have to find out number of hours required for 3 tractors to plow the field

5 tractors can plow a field in 4 hours, So time taken for 1 tractor

\text{ time taken for 1 tractor } = \frac{\text{ time taken for 5 tractor}}{5}

\text{ time taken for 1 tractor } = \frac{4}{5} \text{ hours }

<em><u>So time taken for 3 tractors is given as:</u></em>

time taken for 3 tractor = time taken for 1 tractor x 3

\text{ time taken for 3 tractor} = \frac{4}{5} \times 3 = \frac{12}{5}

\rightarrow \frac{12}{5} = 2.4

So number of hours required for 3 tractors to plow the field is 2.4 hours

3 0
3 years ago
Yan is climbing down a ladder. Each time he descends 4 rungs on the ladder, he stops to see how much farther he has to go. If Ya
yarga [219]

Answer:

8+8+8+8

Step-by-step explanation:

it can't be any negatives because the questions asking how many ladder rungs he climed not how far he went down. It can't be the first one cause Yan did not climb 16 rungs.

3 0
3 years ago
Read 2 more answers
What is the sum of the first 30 terms in a(n)=4n+1
dimulka [17.4K]
Hello,

\sum _{i=1} ^{30}(a_i)=\sum _{i=1} ^{30}(4*i+1)\\&#10;&#10;=4*\sum _{i=1} ^{30}(i) +\sum _{i=1} ^{30}(1)\\&#10;&#10;=4* \dfrac{31*30}{2} + 30 =1860+30=1890
6 0
3 years ago
Which ordered pair is the best estimate for the solution of the system of equations? y=32x+6y=14x−2
Oduvanchick [21]

Answer:

y=14 x=5

Step-by-step explanation:

4 0
3 years ago
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