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4 years ago

How do you solve 6-4(-3)-5?

Mathematics

1 answer:

Mnenie [13.5K]4 years ago

4 0

-3(5-6)-4(2-3)

Handling parentheses first:

-3(-1)-4(-1)

Multiplication left to right:

3-4(-1)

3-(-4)

Rewriting the above we have:

3+4=7

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Kitty [74]

Answer:

x = 2 and y = 1

Step-by-step explanation:

4*2 = 8

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3 years ago

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Which of the following statements must be true about this diagram?

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A, C, D

Step-by-step explanation:

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3 years ago

How do you do 4(x-3) you have to use distributive property to remove the parentheses..

Oksana_A [137]

Answer:

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Step-by-step explanation:

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3 years ago

You have a wire that is 20 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The o

Aleksandr [31]

Answer:

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Step-by-step explanation:

Let the side of the square be s

and the radius of the circle be r

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According to the problem,

4s + 2πr =20

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A represent the total area of the square and circle.

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Putting the value of s

$A=\pi r^2+ (\frac{10-\pi r}{2})^2$

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For maximum or minimum $\frac{dA}{dr}=0$

Differentiating with respect to r

$\frac{dA}{dr}= \frac{2\pi r(4+\pi)}{4} -5\pi$

Again differentiating with respect to r

$\frac{d^2A}{dr^2}=\frac{2\pi (4+\pi)}{4}$ > 0

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$\frac{dA}{dr}=0$

$\Rightarrow \frac{2\pi r(4+\pi)}{4} -5\pi=0$

$\Rightarrow r = \frac{10\pi }{\pi(4+\pi)}$

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Therefore at $r=\frac{10}{4+\pi}$ , A is minimum.

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3 years ago

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ch4aika [34]

Answer:

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Step-by-step explanation:

Hope this helps, And have a good day!

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3 years ago