3 years ago

Will mark brainliest

Mathematics

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer: A

Step-by-step explanation:

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2(x)+2(2)=2(x/2)-2(x)<br> Solve this please and show the steps!!!!!!

Olin [163]

Answer: $x=-\frac{4}{3}$

Step-by-step explanation:

$2(x)+2(2)=2(\frac{x}{2})-2(x)$

Remove all those parentheses by multiplying. Note: 2 and 2 cancel out.

$2x+4=x-2x$

Subtract 2x

$4=x-2x-2x$

Combine like terms;

$4=-3x$

Divide by -3

$\frac{4}{-3}=x$

Rewriting it;

$x=-\frac{4}{3}$

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3 years ago

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Laura is building a fence around her pond. The pond has a diameter of 5 ft. Which is the minimum amount of fence Laura will need

aivan3 [116]

Answer: 15.707 feet of fence.

Explanation: The formula to find this would be the one you’d use to find circumference, which is: C = 2(Pi)r

Half of the diameter is the radius, so plug that in and it becomes:

C = 2(pi)2.5

Then you just solve it and the result is C = 15.707

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3 years ago

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Use the Addition Formula for Cosine to prove the Double-Angle Formula for Cosine. cos(2x) = cos2(x) − sin2(x) Rewrite 2x as x +

andre [41]

Answer with Step-by-step explanation:

We are given that

LHS

$cos 2x$

To prove that

$cos 2x=cos^2x-sin^2 x$

$cos(x+x)$

We know that

$cos(x+y)=cos xcosy-sinx siny$

Using the formula

$cos(x+x)=cosx\cdot cosx-sinx\cdot sinx$

$cos2 x=cos^2 x-sin^2 x$

By using

$cosx\cdot cosx=cos^2 x$

$sinx\cdot sinx=sin^2 x$

LHS=RHS

Hence, proved.

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3 years ago

Factor 2x^4 + 3x^3 +14x^2 +24x – 16

Annette [7]

Answer:

( x ^2 + 8 ) ( 2 x − 1 ) ( x + 2 )

Step-by-step explanation:

a ^2 − b ^2 = ( a + b ) ( a − b )

where

a = x and b = 1

( x ^2 + 8 ) ( 2 x − 1 ) ( x + 2 )

Glad I was able to help!!

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3 years ago

Which of the following is the graph of (x + 1)2 + (y − 6)2 = 36?

Brrunno [24]

Answer:

Step-by-step explanation:

Slope:

− 1

y-intercept:

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3 years ago

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