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Margaret [11]
3 years ago
9

Marci, Bobby, and Max began their homework at the same time. Marci finished her homework in 60 minutes. Bobby finished his homew

ork in 50% of the time it to Marci to finish. Max finished his homework in 150% of Marci's time. How long did each of them work?
Mathematics
2 answers:
NeX [460]3 years ago
5 0

Answer: Marci: 60 minutes

Bobby: 30 minutes

Max: 90 minutes

Step-by-step explanation:

50% of 60 is 30.

100% of 60 is 60, plus 50% is 60+30, which gets you 90.

Irina-Kira [14]3 years ago
5 0

Answer:

bobby finished in 30mins because 50% is 1/2 and 1/2 of 60 is 30

max finished in 90 mins because 150% is 1.5 and 1 whole of 60 is 60 had half of 60 to that it equals 90

Step-by-step explanation:

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mezya [45]

Answer:

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7 0
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Joe has 14 toys in a collection he buys 12 new toys and sells 8 out of the old collection would you subtract 26-8 which would gi
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4 0
3 years ago
Can someone help me find the midpoint?
ioda

Answer:

(6,-2.5)

Step-by-step explanation:

The formula for the midpoint between two points is:

(\frac{x_{1} + x_{2}}{2},\frac{y_{1}+y_{2}}{2})

Now we substitute

We have than (9, -1) is (x_{1}, y_{1}) and (3, - 4) is (x_{2}, y_{2})

So:

(\frac{(9) + (3)}{2},\frac{(-1)+(-4)}{2})\\\\(-1) + (-4) = -5\\9 + 3 = 12\\

So, we have:

(\frac{12}{2}, \frac{-5}{2})\\\\12 / 2 = 6\\-5 / 2 = -2.5\\\\(6, -2.5)

<h2>(6,-2.5)</h2><h2 />

I can do a graphic explanation if you want.

6 0
3 years ago
the line of symmetry of a parabola whose equation is y = ax ^ 2 - 4x + 3 is =-2 what is the value of "a"
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Y= ax² -4x +3

-b/2a is x - coordinate of the vertex,
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