3 years ago

3

Mathematics

1 answer:

Irina18 [472]3 years ago

5 0

Answer:

bussin

Step-by-step explanation:

bbbbbbuuuuuussssssssssssiiiiiinnnnnn

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Ahmed paid $18 for a shirt which has a marked price of $25. What is the percentage discount?

Alina [70]

18/25=0.72
1-0.72=0.28 or 28%

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3 years ago

1. How do you define quadratic equations?

oksian1 [2.3K]

Answer:

$ax^{2} +bx+c^{2}=0$

Step-by-step explanation:

A quadratic equation is a equation that takes the form: $ax^{2} +bx+c^{2} = 0$

Ex. Using our definition of quadratic equations, $ax^{2} +bx+c^{2}=0$ ,

We can set a = 2, b = 1, c = 6:

$2x^{2} +x+6^{2}=0$

$2x^{2} +x+36=0$

Which can then be solved (if you are trying to solve it) as:

$(2x+9)(x-8)=0$

$x=\frac{9}{2}, 8$

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3 years ago

Two babies, Carter and Alyssa, were due on the same day. Carter was born 9 days before his due date. If Alyssa was born two week

VikaD [51]

Answer: B) 5 days

Explanation: 2 weeks is equal to 14 days. If you do 14 - 9 you get 5, which is equal to the amount of days after the due date.

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3 years ago

Solve equations for this word problem

o-na [289]

Not enough information... how much area did the student paint in 8 hours?

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3 years ago

The teacher tells the class the highest marks obtained by a student in her class is twice the lowest marks plus 7 . the highest

Ilya [14]

Answer:

Step-by-step explanation:

highest=2(lowest)+7

Replace the variables here:

87=2(lowest)+7

minus 7 on both sides

80=2(lowest)

divide both sides by 2

40=lowest

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3 years ago