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melamori03 [73]
3 years ago
15

Question

Mathematics
1 answer:
NeTakaya3 years ago
3 0

9514 1404 393

Answer:

  • 80 minutes
  • 34.4 km

Step-by-step explanation:

Use the second equation to substitute for d in the first equation.

  0.43t = 0.33t +8

Subtract 0.33t from both sides

  0.10t = 8

Multiply by 10

  t = 80 . . . . . . Michelle will catch Jen in 80 minutes

The distance traveled will be ...

  d = 0.43t = 0.43×80 = 34.4 . . . . km

The girls will have traveled 34.4 km when they meet.

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Y=6x 2x+3y=-20. (Solving by substitution)
almond37 [142]
Y=6x, 2x+3y=-20
Substitution means just plugging in another equation equal to a single variable in order to solve for the other variable, and then the first. In this case, the equation being plugged in is y=6x, so 6x will be put in place of y in the equation 2x+3y=-20.
2x+3(6x)=-20
2x+18x=-20
20x=-20
x=-1
And then x=-1 can be plugged into the original equation to find y. (And, if you wish, into the y= equation to check it.)
2(-1)+3y=-20
-2+3y=-20
3y=-20+2
3y=-18
y=-6
And to check it, we plug the two into the original y= equation.
y=6x
-6=6(-1)
-6=-6
They are equal, so both check out.
x=-1, y=-6
7 0
3 years ago
Read 2 more answers
write 25/8 as whole or mixed number in simplest form and write 32/7 as whole or mixed number in simplest form 31/4 as whole or m
ioda

6 1/4 for 25/8

4 4/7 for 32/7

7 3/4 for 31/4

7 0
4 years ago
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If the perimeters of each shape are equal, which equation can be used to find the value of x?
Brums [2.3K]

Answer:

(x+2) + x + (x+4) = 2(1/2) + 2(x+3)

Step-by-step explanation:

They are equal to each other and the rectangle has 2x more perimeter

The triangle would be divided in half from that rectangle.

Sorry If this is confusing I am not very good at explaining things.

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3 years ago
1. What are the coordinates of the midpoint of the line segment with endpoints (2,5) and (4. – 7)?
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Answer:

(3,-1)

Step-by-step explanation:

(2+4)/2. (5-7)/2

6/2. - 2/2

3,-1

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4 years ago
Please answer correctly !!!!!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
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Repay the national debt, protective tarrifs, national banks, and whiskey tax.

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