All categories

3 years ago

Decide if the expressions in each pair are equivalent. Explain how you know.

2 answers:

8 0

The first expression is true because x+x+x+x= 4x. It is like addition but with a variable. The second isn’t true because 5x= x+x+x+x+x whereas x+5 is x plus five. Not 5x. Hope this helps.

marysya [2.9K]3 years ago

4 0

Answer:

20x²+5x+5

Step-by-step explanation:

any more help just ask

You might be interested in

Please help im confused :(

aev [14]

Answer:

precipitation then condensation

Step-by-step explanation:

3 0

3 years ago

Write the formula for the parabola that has x-intercepts (1.3,0) and (-1.3,0), and y intercept (0,169)

stepan [7]

It is 3.25/5.40 I think

5 0

3 years ago

The prices of three t-shirts styles are $24, $30 and $36. the probability of choosing a $24 t-shirt is 1/6. the probability of c

Slav-nsk [51]

$\text{Answer} : \text{The expected value of a t-shirt is \$31.}$

Explanation:

Since we have given that

The prices of three t-shirts styles i.e $24, $30, $36 with their probability is given by

$\frac{1}{6}, \frac{1}{2},\frac{1}{3}$

As we know that,

$E(X)= \sum_{1}^{3}x_iP(x_i)$

$\text{where} x_i \text{ is the prices of t- shirts styles}$

Now,

$x_1= \$24 , x_2=\$30 , x_3=$36$

and

$P(x_1)=\frac{1}{6},P(x_2)=\frac{1}{2}, P(x_3)=\frac{1}{3}$

So,

$E(X)= 24\times \frac{1}{6}+30\times\frac{1}{2}+36\times \frac{1}{3}\\=4+15+12\\=31$

So, the expected value of a t-shirt = $31.

4 0

3 years ago

How to solve for x and what does x equal in this?

Tanya [424]

Answer:

Step-by-step explanation:

give brainliest please!

hope this helps :)

so these two angles add up to 180 degrees

7x -3 + 12x -7 = 180

7x+12x=180+7+3

19x=190

x=10

to check if this is true we can input 10 for x in each side.

7(10)-3 = 67

12(10)-7 = 113

113+67 = 180

7 0

2 years ago

Read 2 more answers

A store uses the expression -2p+ 50 to model the number of backpacks it sells per day, where the price, p, can be anywhere

Ivan

Answer:

B: $12.00 per backpack gives the maximum revenue; the maximum revenue is $312.00.

Step-by-step explanation:

3 0

3 years ago