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gayaneshka [121]
3 years ago
14

Solve for x: 2x^2 + x - 4 = 0

Mathematics
1 answer:
ella [17]3 years ago
7 0

Answer:

Hopefully this helps, sorry if it doesn't.

Step-by-step explanation:

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2 years ago
A recipe calls for 15oz of flour every 8 oz of milk. if you use 15oz of milk, how much flour should you use
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We are given that 8 oz of milk requires 15 oz of flour.

To know the amount of flour needed for 15 oz of milk, we will simply use cross multiplication as follows:
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3 years ago
Mrs. Bendit’s 1st Block class has 28 students. There are 7 girls in the class. What percent of boys are in the class?
Gemiola [76]

Answer:

Boys: 75%

Girls: 25%

Step-by-step explanation:

Total: 28 Students: 100%

7 Girls in clas

28(total)-7 (girls)= 21 Boys in class

__________________

If we divide the amount  boys OR girls ( depending on which gender) after the toal and move the decimal to the right twice after dividing) we will get our answer.

Formula:

(Amount of Boy or girls) = x

X/28

So since we are trying to get the percentages of boys, we will replace X with the amount of boys

21/28 = .75 ( then move the decimal to the right TWICE) =  75  

Then you should get your percentages: 75%  Also if your lookings for girls percentages, you basically subtract 75 ( boys percentages) with the total percentages ( 100) then you should get your answer for the girls: 25%

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2 years ago
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