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attashe74 [19]
3 years ago
9

What is the value of 4x2 + 5x when x= 1?

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0

Answer:

13

Explanation:

Insert 1 for 'x'

(4)(1)(2) + 5(1)

(4)(1)(2) = 8

5(1) = 5

8 + 5 = 13

Katyanochek1 [597]3 years ago
5 0
Substitute 1 where x is...
That should be 4x2+5(1)
Using BODMAS we simplify: 8+5(1) = 8+5 = 13
So the answer is 13.
Btw, 5(1) is just 5x1.
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5. Priya mixes 2..5 cups of water with 1/3 cup or orange juice concentrate. Diego mixes 1 2/3 cups of water with 1/4 cup or oran
Snowcat [4.5K]

Priya needs 13⅓ cups of orange juice

Diego 15 cups

Step-by-step explanation:

......................................................................................................................

Priya

......................................................................................................................

Cup of water = 2½

Cup of orange = ⅓

If 2½ cups of water requires ½ cup of orange juice concentrate

Then 100 cups of water would require x cup of orange

Representing the above statement mathematically

2½ : ⅓ = 100 : x

5/2 : 1/3 = 100 : x ------------------Convert ratio sign to division

5/2 ÷⅓ = 100/x

5/2 * 3 = 100/x

15/2 = 100/x ---------------Multiply both sides by x

15/2 * x = 100/x * x

15x/2 = 100 ------------------ Multiply both sides by 2

2 * 15x/2 = 2 * 100

15x = 200 --------------- Divide both sides by 15

x = 200/15

x = 13⅓

So, 13⅓ cups of orange is needed by Priya

......................................................................................................................

Diego

......................................................................................................................

Cup of water = 1⅔

Cup of orange = ¼

If 1⅔ cups of water requires ¼ cup of orange juice concentrate

Then 100 cups of water would require x cup of orange

Representing the above statement mathematically

1⅔:¼ = 100:x

5/3 : ¼ = 100:x

5/3 ÷¼ = 100 ÷ x

5/3 * 4/1 = 100 ÷ x

20/3 =100/x----------------------- Multiply x to both sides

20/3 * x = 100/x * x

20x/3 = 100 ------------------------ Multiply 3 to sides by 3

3 * 20x/3 = 100 * 3

20x = 300 ------------- Divide both sides by 2

20x/20 = 300/20

x = 15

So, 15 cups of orange is needed by Diego

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Answer:

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Step-by-step explanation:

In the attached file

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a trail mix has 4 cups of raisins, 3 cups of dates, 6 cups of peanuts, and two cups of cashews. Which ingredients are in the sam
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The ratio of dates to peanuts is the same as cashews to raisins. Simplified, both ratios equal 1/2.
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What are the roots of the equation? x^2(5x−7)(3x+2)=0
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x = 0, x = \frac{7}{5}, x = - \frac{2}{3}

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