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Julli [10]
3 years ago
11

Mary and Sam need to plant 198 trees. If Mary can plant 12 trees in 5 hours and Sam can plant 14 trees in 7 hours

Mathematics
1 answer:
34kurt3 years ago
4 0

Answer:

Step-by-step explanation:

so you wanna first add the hours

12

then add the number of trees painted in that number of hours

26

do 198 divided by 26

7.62( rounded to the nearest hundredth)

then take that product and multiply it by 12

91( rounded to the nearest one)

tha'ts your answer: 91 days

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What is the point and slope of the line represented by the equation below?
alexandr1967 [171]
The answer is B because the slope is always the one multiplying the x and the 1 is negative because the equation is y-y1=m(x-x1)
3 0
3 years ago
Simplify (4x2 + 9x + 2) + (-2x2 + 2x - 3).
r-ruslan [8.4K]

Answer:

6x^2 + 11x -1

Step-by-step explanation:

4x^2 + 9x + 2 + 2x^2 + 2x -3

Add the like terms to get the answer

7 0
3 years ago
The length of a rectangle is 3 m less than twice the width if the area of the rectangle is 66 5 m² find the dimensions
goblinko [34]

Let the width be x.

Then,Length = ( 2x - 3 ) m

<u>According to the question, </u>

Area of rectangle = 665 m² [ Given ]

Formula: Area of rectangle = Length × Width

\sf \implies \: length \:  \times breadth = 665 \: m {}^{2}

\sf\implies \: (2x - 3) \times x = 665

\sf \implies \: 2 {x}^{2}  - 3x = 665

\sf \implies \:  {2x}^{2}  - 3x - 665 = 0

<u>By split middle term </u>

\sf \implies \: 2 {x}^{2}  - 38x  + 35x - 665 = 0

\sf\implies \: 2x(x - 19) + 35(x - 19) = 0

\sf \implies \: (2x + 35) = 0 \: or \: (x  - 19) = 0

\sf \implies \: x =  \dfrac{ - 35}{2}  \: or \:  \: x = 19 \:

Note: Ignore negative number.

Now,

Width of a rectangle = 19 m

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8 0
3 years ago
Write the numerical expression for 1/4 of the sum of 17 and 4?
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Answer:

(17 + 4)/4

Step-by-step explanation:

"of the sum of 17 and 4" = 17 + 4

"1/4 of"... = 1/4

Put the two expressions together:

1/4 * (17 + 4)

(17 + 4)/4 is your answer.

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6 0
2 years ago
I don’t know this ppl I need help lol
Alexus [3.1K]

Answer:

15

Step-by-step explanation:

6 0
2 years ago
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