3 years ago

The expression (2x+1)^2 -2(2x^2-1) is equivalent to:

Mathematics

1 answer:

Leni [432]3 years ago

8 0

(2x + 1)^2 - 2(2x^2 - 1) = 4x^2 + 4x + 1 - 4x^2 + 2 = 4x + 3

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Please help me with this!!

Kaylis [27]

Answer:
2 dollars each

Step-by-step :
Since 7 - 3 is 4
And 2 fries were bought then we have to divide 4 by 2 which equals 2. So 2 dollars were each small package of fries.

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3 years ago

Joey is running an experiment with a mass on a spring. Joey models the height of the mass above the table he is working on using

galben [10]

Answer: 1.8 s

Step-by-step explanation:

Given

The height of the spring mass system above the table is given by

$h(t)=6.85\cos (3.42t)+9$

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and $\omega T=2\pi$

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time when mass returns to its original position

$T=\dfrac{2\pi }{3.42}\\\\T=1.8\ s$

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2 years ago

Solve the equation for x. 10x= 120

Dominik [7]

Answer:

x = 12

Step-by-step explanation:

10x = 120 original equation

10x/10 = 120/10 divide both sides by 10

x = 12 simplify

Check work:

10(12) = 120

120 = 120 (true)

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2 years ago

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one day a corn stalk was 0.85m tall. A tomato plant was0.850m. A carrot top was 0.085m.Which plant was the shortest?

aniked [119]

The carrot top is the smallest

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2 years ago

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Write 7 in the form a + ib

11Alexandr11 [23.1K]

Answer:

Step 1. A=4

Step 2. Ib =3

Step 3 add it. Ans=7

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2 years ago