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Serga [27]
3 years ago
8

Hayley begins solving this problem by combining like terms. 3x + 5x = 10 Which problem requires the same strategy (combining lik

e terms)? A) 5x=20 B) 3(x + 5) = 20 C) x ÷ 4= 30 D) 3x - 2x = 10
Mathematics
2 answers:
Tamiku [17]3 years ago
6 0
D) 3x - 2x = 10 is the answer to this equation 
Alexxx [7]3 years ago
4 0

Answer:

D) 3x - 2x = 10

Explanation:

To combine like terms, you add or subtract terms that have the same variables and exponents.  In the problem we are given, 3x and 5x are like terms; we would add them together and then continue solving.

In choice A, there are no like terms to combine.

In choice B, we would use the distributive property; after that, there are no like terms to combine.

In choice C, we would cancel the 4; there are no like terms to combine.

Choice D has two like terms, 3x and 2x.  We would subtract them and then continue solving.

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The original price of a computer is $489.00. it is discounted 30%. find the selling price ​
Yanka [14]

Answer:

$342.30

Step-by-step explanation:

The original price of the computer is $489. The computer is discounted 30%, which means that 30% of the price is removed from the original price.

30% of 489 is

489 * 0.3 which is $146.7

146.7 is the discounted amount, not the selling price. To find the selling price, subtract how much is discounted ( 146.7) from the original price (489).

489-146.7= 342.3

3 0
2 years ago
A University wanted to find out the percentage of students who felt comfortable reporting cheating by their fellow students. A s
Alla [95]

Answer:

The point estimate for this problem is 0.48.

Step-by-step explanation:

We are given that a University wanted to find out the percentage of students who felt comfortable reporting cheating by their fellow students.

A survey of 2,800 students was conducted and the students were asked if they felt comfortable reporting cheating by their fellow students. The results were 1,344 answered "Yes" and 1,456 answered "no".

<em>Let </em>\hat p<em> = proportion of students who felt comfortable reporting cheating by their fellow students</em>

<u></u>

<u>Now,  point estimate (</u>\hat p<u>) is calculated as;</u>

                               \hat p=\frac{X}{n}

where, X = number of students who answered yes = 1,344

            n = number of students surveyed = 2,800

So, Point estimate (\hat p)  =  \frac{1,344}{2,800}

                                     =  <u>0.48 or 48%</u>

5 0
3 years ago
Please help me asp thank you
Luda [366]
Not readable for me to be able to answer.
5 0
3 years ago
Can anyone please explain this to me​
Crazy boy [7]
What Grade even is this ..
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3 years ago
A farmer uses 36 feet of fencing to build a rectangular rabbit pen. The function A(w)=18w−w2 can be used to find the area of the
Masja [62]

Answer:

Step-by-step explanation: D

3 0
3 years ago
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