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tatiyna
3 years ago
8

1) Write a system of equations to describe the situation below, solve using any method, and

Mathematics
1 answer:
Aloiza [94]3 years ago
7 0
This situation can be represented by

y = 33x + 223

y = 32x + 239

I still like substitution, so let’s plug in 33x + 223 into the second equation

33x + 223 = 32x + 239

Move the terms into appropriate sides

33x - 32x = 239 - 223

Combine like terms

x = 16

Then plug in x for any equation

y = 32(16) + 239

y = 751

Erin will have to swim 16 laps for a total of 751 meters
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Which equation has a graph that is a parabola with a vertex at (–2, 0)?
MaRussiya [10]

Answer:

The vertex of a quadratic equation corresponds to the point where the maximum or minimum value is located.

If the function has a positive leading coefficient, the vertex corresponds to the minimum value.

If it has a negative leading coefficient,  the vertex corresponds to the maximum valuevalue

If the vertex is located at

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The possibilities are

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See attached picture

6 0
3 years ago
Read 2 more answers
Need help with this question
Y_Kistochka [10]

Answer:

D

Step-by-step explanation:

Factor
this is how is should be
x + 2 = 0
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8 0
2 years ago
Thomas has been offered two jobs. The first job pays $880.00 per week. The second job pays $790.00 per week plus 12% commission
LUCKY_DIMON [66]

Answer:

he has to make a sale of $750

Step-by-step explanation:

first job pays $880 per week

second job pays $790 per week

amount first job is paying more=$(880-790)

=$90

therefore,12% should $90 if he wants to make an equal amount as the first job is paying therefore,sale he has to do

12% of x=$90

12/100*x=$90

x=90*100/12

x=9000/12

x=$750

thus he has to make a sale of $750 to earn a 12% comission of $90

5 0
3 years ago
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