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sukhopar [10]
3 years ago
8

7 1/2 ÷ 9 equals what

Mathematics
2 answers:
tatyana61 [14]3 years ago
7 0

7 1/2 ÷ 9

Set the numbers to be improper fractions

15/2 / 9/1

Flip the second fraction while converting the division sign to multiplication

15/2 * 1/9

Multiply

15/18

Simplify

Final Answer: 5/6

alexira [117]3 years ago
3 0
It equals 5/6. If you want to know why, just ask me.
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Answer:

a) A

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3 years ago
How to solve 15a5b2 + 4a5b2
Deffense [45]

Answer:

19a^5b^2

Step-by-step explanation:

15a+4a=19a

4 0
3 years ago
Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,
Tresset [83]

Answer:

\boxed{y=2x^2+4x-7}

Step-by-step explanation:

Let the quadratic function be

y=ax^2+bx+c


We substitute (-4,9) into the equation to obtain;


9=a(-4)^2+b(-4)+c


\Rightarrow 9=16a-4b+c---(1)


We substitute (0,-7) to obtain;


-7=a(0)^2+b(0)^2+c


\Rightarrow c=-7---(2)


We finally substitute (1,-1) to obtain;


-1=a(1)^2+b(1)^2+c


\Rightarrow -1=a+b+c---(3)


We put equation (2) into equation (1) to get;


9=16a-4b-7


16a-4b=16


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\Rightarrow -1=a+b-7


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We add equation (4) and (5) to get;

4a+a=6+4



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\Rightarrow a=2


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2+b=6


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The reqiured quadratic function is

y=2x^2+4x-7

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2 years ago
Jamie and Stella are saving money to sign up for a school trip to Washington, D.C. In order to sign up for the trip, they must p
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Answer:

1. Let, Jamie needs "$ g" for the  trip. Then, according to the question,

g = 600 -------------------(1)

2. Let, Stella needs "$ m" for the trip. Then, according to the question,

m = 600 -------------(2)

3. If Jamie washes x no. of cars and Stella makes y no. of pies, then,

25x ≥ 600 ≥ 15y -------------(3)

4. Yes, Stella can afford to sign up for the trip with the money she earns.

Step-by-step explanation:

Let, Jamie needs "$ g" for the  trip. Then, according to the question,

g = 600 -------------------(1)

Let, Stella needs "$ m" for the trip. Then, according to the question,

m = 600 -------------(2)

if Jamie washes x no. of cars for $25 each and Stella makes y no. of pies

for $ 15 each, then, according to the question,

25x ≥ 600 ≥ 15y -------------(3)

Yes,  Stella can afford to sign up for the trip with the money she earns. Because, she can make at most 40 pies for $15 each and

$ 40 \times 15 = $ 600 = The amount of money Stella needs for the trip.

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3 years ago
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