2 years ago

Evaluate the expression: 9x - 4y if x= -7 and y= -6

Mathematics

1 answer:

Tanya [424]2 years ago

3 0

Answer: 87

Step-by-step explanation: hope this helps :)

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You download 15 music files on your computer and plan to save 7 of them to an MP3 player. In how many ways can u arrange the son

Ulleksa [173]

Answer:

32,432,400

Step-by-step explanation:

This you can use a permutation.

P(15,7)15x14x13x12x11x10x9

There are 32,432,400 ways to arrange it.

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3 years ago

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shtirl [24]

Answer:

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Step-by-step explanation:

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3 years ago

What is 3a+4+b+2a+5+b simplifyed

Nataliya [291]

You are combining like terms. It will be 5a+9+b²

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3 years ago

The diagonal of a square is x units. What is the area of the square in terms of X?

lesantik [10]

Answer:

$\frac{1}{2}x^2$ square units

Step-by-step explanation:

The simple formula we need here is:

$d=s\sqrt{2}$

Where

d is length of diagonal

s is length of side of square

Let's find side length of square from information given:

$d=s\sqrt{2} \\x=s\sqrt{2} \\s=\frac{x}{\sqrt{2}}$

Now,

we know area of square is $s^2$

We know s, and now we find area

Area = $s^2\\(\frac{x}{\sqrt{2}})^2\\\frac{x^2}{2}\\\frac{1}{2}x^2$

The first answer choice is right, 1/2x^2 sq. units.

5 0

3 years ago

Find the slope of line y=5/6x+3

sergij07 [2.7K]

Answer:

Step-by-step explanation:

Y=5/6x +3

First you do the slope interept form :

y=mxtb

m=5/6 b=3

You plot 3 at the y-intercept

Then find the Rise over Run for 5/6

You go up 5 and go over 6.

you go down 5 and over 6.

And then you connect your line.

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3 years ago