All categories

3 years ago

What is the value of the expression below when w=2 and x=2 9w - x

1 answer:

3 0

Here, all we need to do is subtitute w = 2 and x = 2 into the expression, by multiplying and adding. First, we will muliply 9w:

9 · w =

9 · 2 =

Now, all we have to do is use our answer for 9w, and subtract x from it:

9w - x

18 - (2) =

18 - 2 =

So, our answer is 16.

Let me know if you have any other questions! :)

You might be interested in

Which fraction represents 80%?

ira [324]

80%= 80/100 because that's a sheet you can use to help you with your work I had trouble with this until I understood it because my math teacher helped me

5 0

3 years ago

Use f(x) = 2 x and f-'(x) = 2x to solve the problems.

Marrrta [24]

Answer:

a) 1

b) 2

c) 2

Step-by-step explanation:

a) $f(2)$ means find the output for $\frac{1}{2}x$ when $x=2$ .

$\frac{1}{2}(2)$

$\frac{2}{2}$

$1$

b) $f^{-1}(1)$ means find the output for $2x$ when $x=1$

$2(1)$

$2$

c) If $f$ and $f^{-1}$ are truly inverses then $f(f^{-1}(u))=u$ and $f^{-1}(f(u))=u$ as long as $u$ satisfies the domains.

So we should be able to conclude that $f^{-1}(f(2))=2$ with no work.

However, I will also show work.

$f^{-1}(f(2))$

$f^{-1}(1)$ since $f(2)=1$ from part a.

$2$ since $f^{-1}(1)=2$ from part b.

6 0

3 years ago

URGENT

matrenka [14]

The mean is the average. You calculate it by adding all the numbers up in the data set and divide by how many numbers there are in the data set.

So:

$\sf Mean=\dfrac{70+68+72+66+68+69+66+71+74+66}{10}\rightarrow\dfrac{690}{10}\rightarrow\boxed{\sf 69}$

7 0

3 years ago

Read 2 more answers

The range of the data set is 32. If the largest number in the set is 50, what is the smallest number?

butalik [34]

Range is the difference beteeen the smallest and largest numbers in a set. Therefore, 50-32=18

6 0

3 years ago

Find the distance between the points (-4, -5 and (3, -1.

Komok [63]

≡ We know that:
⇔ $(x_{1},y_{1})$ → $(-4,-5)$
⇔ $(x_{2},y_{2})$ → $(3,-1)$

≡ Solution:
⇒ $\sqrt{[(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}]}$
⇒ $\sqrt{[(3-(-4))^{2}+(-1-(-5))^{2}]}$
⇒ $\sqrt{[7^{2}+4^{2}]}$
⇒ $\sqrt{[49+16]}$
⇒ $\boxed{\sqrt{65}}$

7 0

3 years ago

Read 2 more answers