All Answers 358128 Answers

A. Without replacement, 26*25*24*10*9*8

B. Same situation, 26*25*24*23*10*9*8

It took me a while to work that one out lol

$$|x+2|\ge 8$$

This says "The absolute value of (x+2) is greater than or equal to 8.

This means that x+2 must be further from zero (or equal to) on the number line than 8 as shown on this number line.

So 

$$\begin {array}{rlllrll}
x+2 &\le& -8\qquad &or& \qquad x+2&\ge& 8 \\
x+2-2 &\le& -8-2\qquad &or& \qquad x+2-2&\ge& 8-2\\
x &\le& -10\qquad &or& \quad \qquad x&\ge& 6\qquad
\end{array}$$

Use the "." button. Also, you can type a fraction and it'll turn it into a decimal. Like 5/10 = 0.5

-1 + (1/3)

Get a common denominator first -- in this case, we can use 3:

So, -3/3 + 1/3 = -2/3.

You can't do much except divide both sides by 2.

2y + x = 75.

If you're looking for the equation of a line, then:

2y = -x + 75.

y = -1/2x + 75/2.

All you have to do is multiply 64.70 by 48 to get the total.

There are lots of countries!

Egypt, UAE, Saudi Arabia, etc.

You can use the on-site calculator on the home page.

Example:

log₅ 125 = x.

By properties of logs, you get 5^x = 125.

x = 3.

5 + 5 = 10.

Change the decimal to a fraction and then use the skip, change, & flip method.

Skip the first term, change division to multiplication, & flip the fraction.

Example: 5/0.5

5 / (5/10)

5 * 10/5

50/5

10.

I believe it is something like a tree where you get a large number to all its prime factors:

For example 27 --> 9*3 --> 3*3*3

Thanks Aziz for answering.

Marissa

Distribute 5 to (x-4) by multiplying 5 with x and 4.

5*x - 5*4

5x - 20 - 1 = -7x + 3

5x - 21 = -7x + 3

Now, all you have to do is add 7x to both sides and add 21 to both sides.

Can you take it from there?

4b + 8 = 6 + 4b

Note that we have 4b on both sides and also 8 on one side and 6 on the other.

The left hand side is NOT equal to the right hand side.

Ok, let's compare ratios:

Mixture A - 3:5

Mixture B - 4:7

3/5 = 0.6

4/7 = 0.571

Mixture A is stronger.

Another way to think about it is, you're adding 3 parts concentrate to 5 parts water so think of it as 2 extra parts of water for mixture A.

For mixture B, you are adding 7 - 4 = 3 extra parts of water.

First, do the exponents:

(-2)^3 = (-2*-2*-2) = -8.

Now, we have 2 divided by 3 or 2/3 times 6 = 2/3*6  = 12/3 = 4.

Add -8 and 4 --> -8 + 4 = -4.

Now, (-4)^5 = (-4*-4*-4*-4*-4) = ?

Mixture A has 3 parts concentrate for 5 parts of water. Mixture B has 4 parts concentrate for 5 parts water.

So, for every 3 parts of concentrate you add 5 parts water or 3:5 for mixture A. Mixture B's ratio would be 4:5

Notice that Mixture B would be stronger because you are adding more concentrate to the same amount of water.

oops i meant to have two b's not and x and b

Mixture A has 3 parts concentrate for 5 parts of water. Mixture B has 4 parts concentrate for 5 parts water.

So, for every 3 parts of concentrate you add 5 parts water or 3:5 for mixture A. Mixture B's ratio would be 4:5

Notice that Mixture B would be stronger because you are adding more concentrate to the same amount of water.

There could be many reasons.

Check for any missing or additional parentheses.

Use * for multiplying and ^ for exponents.

For this, all you have to do is multiply the 3 to each individual term:

3*x = 3x

3*6x = 18x

3*-3x = -9x

3*-3x = -9x

Now, add up all the terms:

3x + 18x - 9x - 9x

It is easy to notice that we cancel out 18x with -9x - 9x since 18x - 18x = 0, leaving us with 3x.

3x is the final answer.

Start by multiplying the top and bottom by 10.

$$\frac{4.5}{45}$$

$$\frac{4.5\times10}{45\times10}$$

$$\frac{45}{450}$$

Divide the top and bottom by 45

$$\frac{1}{10}$$

c = 2pir

All you have to do is divide both sides by 2pi to get r by itself:

c/2pi = r.

r = c / 2pi.

4.5 is the same as 45/10 so if we split 4.5/45 into two fractions:

45/10 * 1 / 45

45/450

Divide both the top and bottom by 45:

1 / 10.