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Amanda [17]
3 years ago
15

Jeff ran 2 miles in 12 minutes. Ju Chan ran 3 miles in 18 minutes. Did Jeff and Ju Chan run the same number of miles per minute?

Mathematics
2 answers:
kenny6666 [7]3 years ago
4 0
12/2=6mpm 18/3=6mpm yes they ran at the same rate
klio [65]3 years ago
4 0
Yes they did .

I would use this proportion
2/x 12/1
2 times 1= 2
2 divided by 12=.16

3/x 18/1
3 times 1=3
3 divided by 18=.16
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A rectangular parking lot has a perimeter of 820 ft. The area of the parking lot measures 42,000 ft2. What is a dimension of the
dalvyx [7]

To solve the problem we must know about quadratic equations.

<h2>Quadratic Equation</h2>

A quadratic equation is an equation that can be written in the form of

ax²+bx+c.

Where a is the leading coefficient, and

c is the constant.

The breadth of the rectangle is 200 ft, while the length is 210 ft.

<h2>Explanation</h2>

Given to us

  • Area of the parking lot = 42,000 ft²
  • Perimeter of the parking lot = 820 ft

<h3>Area of the parking lot</h3>

Area of the parking lot = Area of the rectangle

42,000 ft² = Length x Breadth

Solving for L,

42,000 = L \times B\\\\&#10;L = \dfrac{42,000}{B}

<h3>Perimeter of the parking lot</h3>

Perimeter of the parking lot = Perimeter of the rectangle

820 ft. = 2(Length + Breadth)

820 ft. = 2(L+ B)

2(L+ B) = 820\\\\&#10;(L+B) = \dfrac{820}{2}\\\\&#10;(L+B) = 410

Substituting the value of L,

(L+B) = 410\\\\&#10;(\dfrac{42,000}{B}) +B = 410\\\\&#10;42000 + B^2 = 410B\\\\&#10;B^2 -410B +42000 = 0

<h3>Quadratic Expression</h3>

Solving the quadratic Expression,

B^2 -410B +42000 = 0\\\\&#10;(B-210)(B-200)=0

Equation the factors against zero,

B-210=0

B = 210

B-200=0

B = 200

Hence, the breadth of the rectangle is 200ft, while the length is 210 ft.

Learn more about Quadratic Expression:

brainly.com/question/10025464

4 0
2 years ago
PLEASE PLEASE PLEASE SOMEONE HELP!!!!!!
Bas_tet [7]

Answer:

8,3

Step-by-step explanation:

4 0
2 years ago
Select all that apply
liraira [26]
A right triangle can also be an isosceles triangle.
8 0
3 years ago
Decide if the given probability assignment is possible for the assignment
klemol [59]

Answer:

No because c is 1/8. thanks!!

5 0
3 years ago
If 10 + 5x is 12 more 8, what is the value of 3x?
vredina [299]

Answer:

3x=6

Step-by-step explanation:

10 + 5x =8+12

10 +5x = 20

Subtract 10 from each side

10-10+5x=20-10

5x= 10

Divide by 5

5x/5 = 10/5

x = 2

We want 3x

3(2) = 6

3x=6

5 0
3 years ago
Read 2 more answers
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