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guapka [62]
2 years ago
12

Solve for x. x2 + 4x - 21 = 0

Mathematics
1 answer:
Anton [14]2 years ago
4 0
2x + 4x - 21 = 0
6x - 21 = 0
6x = 21
x=3.5
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Novay_Z [31]

Im pretty sure the Correct answer is D

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3 years ago
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Express the following pattern as an algebraic expression: 88, 75, 62, 49. Use “n” for the term number.
Ostrovityanka [42]

Answer:

-13n + 101

Step-by-step explanation:

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a 400 g of a liquid of density 1.6g/cm3 is made from mixing liquids of density 1.2g/cm3 and 1.8g/cm3 find the mass of the liquid
gogolik [260]

Answer:

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Step-by-step explanation:

Let the:

Mass of 1.2g/cm³ of liquid = x

Mass of 1.8g/cm³ of liquid = y

From our Question above, our system of equations is given as:

x + y = 400........ Equation 1

x = 400 - y

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1.2(400 - y) + 1.8y = 640

480 - 1.2y + 1.8y = 640

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3 years ago
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Divide 35 by 100 and you get 0.35

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