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3 years ago

What is an equation equal to -2m(m+n-4)+5(-2m+2n)+n(m+4n-5)

1 answer:

8 0

$\text{Use distributive property:}\ a(b+c)=ab+ac\\\\-2m(m+n-4)+5(-2m+2n)+n(m+4n-5)\\\\=(-2m)(m)+(-2m)(n)+(-2m)(-4)+(5)(-2m)+(5)(2n)\\+(n)(m)+(n)(4n)+(n)(-5)\\\\=-2m^2-2mn+8m-10m+10n+mn+4n^2-5n\\\\=-2m^2+4n^2+(-2mn+mn)+(8m-10m)+(10n-5n)\\\\=-2m^2+4n^2-mn-2m+5n$

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Wasn’t sure how to write this out : - )

amid [387]

we are given

$\frac{\sqrt[3]{7}\sqrt{7}}{\sqrt[6]{7^5}}$

we can write it in terms of exponents

$\frac{7^{\frac{1}{3}}*7^{\frac{1}{2}}}{7^{\frac{5}{6}}}$

Firstly , we will simplify numerator

$\frac{7^{\frac{1}{3}+\frac{1}{2}}}{7^{\frac{5}{6}}}$

now, we can add exponents

$\frac{7^{\frac{5}{6}}}{7^{\frac{5}{6}}}$

we can cancel it

and we get

$=1$ ............Answer

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3 years ago

Find all x-values where the function is discontinuous.

tamaranim1 [39]

The function is discontinuous at x=8 because as x approaches 8 from the left, f(x) approaches -1 but as x approaches 8 from the right, f(x) approaches 1 and -1 and 1 are not equal.

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3 years ago

A company makes cylindrical crackers that have a cylindrical hole in the middle.

Keith_Richards [23]

Answer:

There's no question. This is just a statement.

Step-by-step explanation:

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3 years ago

A man saves 4% of his monthly

Reptile [31]

Answer:

Although the question is not clear, It most likely looks like you were asking for the calculation of the savings for the month after increase.

savings for the month after increase = $1172.4

Step-by-step explanation:

First, let us calculate how much was saved before the increase in savings:

monthly income = $19,540

Percentage saved = 4% of monthly income

= 4/100 × 19,540 = 0.04 × 19,540 = $781.6

Next, we are given the ratio of increase in savings as 3:2

Let the new savings amount be x

3 : 2 = x : 781.6

$\frac{3}{2} = \frac{x}{781.6} \\781.6\ \times 3\ =2x\\2344.8 = 2x\\x =\frac{2344.8}{2} \\x = \$1172.4$

therefore savings for the month after increase = $1172.4

Just incase you were looking for the savings before the increase, the answer is $781.6 (as calculated above)

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3 years ago

0.7 is 0.5% of what number?

anygoal [31]

...............140...............

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3 years ago

Read 2 more answers