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2 years ago

What is the product of 4(8x + 5).

Mathematics

2 answers:

andreyandreev [35.5K]2 years ago

8 0

Answer:

x = 20/32

Step-by-step explanation:

you have to distribute first.

1) times 4 by all the nubmers and figures inside the pharanthesese and so you get 32x + 20

2) you have to solve for x and so you move the 20 to the other side and get 32x = 20

3) you then divided both sides by 32 to get x by itself and you get x = 20/32

Lostsunrise [7]2 years ago

6 0

Answer:

32x + 20

Step-by-step explanation:

Use the distributive property to multiply the 4 by each term inside the parentheses.

4(8x + 5) = 4 × 8x + 4 × 5 = 32x + 20

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If you have a density of 3g/ml and a volume of 10 ml, what is the mass?

balandron [24]

Alright, lets get started.

If you have a density of 3g/ml and a volume of 10 ml

means density = 3 g / ml

Volume = 10 ml

Formula for density, mass, volume will be

$density = \frac{mass}{volume}$

Plugging the value

$3 = \frac{mass}{10}$

Multiplying 10 in both sides

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mass = 30 gm

Hence the answer is 30 gm. : Answer

Hope it will help :)

7 0

3 years ago

Select the two values of x that are roots of this equation.<br> X2 + 2x - 5 = 0

LenaWriter [7]

Answer:

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

Step-by-step explanation:

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

Ignore the A before the ±. It wouldn't let me type it correctly.

x² + 2x - 5 = 0

a = 1

b = 2

c = - 5

$x=\frac{-2±\sqrt{2^{2}-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4+20 } }{2(1)}$

$x=\frac{-2±\sqrt{24 } }{2}$

$x=\frac{-2±\sqrt{(2)(12) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(6) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(2)(3) } }{2}$

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$x=\frac{-2±2\sqrt{6 } }{2}$

Two separate equations

$x=\frac{-2+2\sqrt{6 } }{2}$

$x=\frac{-2-2\sqrt{6 } }{2}$

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

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3 years ago

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I believe the answer is D.

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3 years ago

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damaskus [11]

Answer:

Step-by-step explanation:

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Barbara had started with the number 80

Now do the work the way the teacher asked her to do it

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I am Lyosha [343]

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