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drek231 [11]
3 years ago
11

Which expression is equivalent to -1/2(-3/2x+6x+1)-3

Mathematics
1 answer:
stira [4]3 years ago
7 0

Answer:

-\frac{9}{4}x-\frac{7}{2}

Step-by-step explanation:

We want to find an expression that is equivalent to -\frac{1}{2}(-\frac{3}{2}x+6x+1)-3.

Since we can;t get the options, we simplify the given expression.

The reason is that, the given expression will be equivalent to the simplified one.

We combine similar terms to get:

-\frac{1}{2}(\frac{9}{2}x+1)-3

We now expand to get:

-\frac{1}{2}*\frac{9}{2}x-\frac{1}{2}-3

We perform the subtraction of the last two terms to get:

-\frac{1}{2}*\frac{9}{2}x-\frac{7}{2}

We now multiply to get:

-\frac{9}{4}x-\frac{7}{2}

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28 students, 18 parents, and 4 teachers took part in a field trip. What fraction of people on the trip were students? What fract
blsea [12.9K]
In these problems, it is always a good idea to find the total population. In this case, it would be the total number of people who went on the field trip.

28+18+4=50

There are 50 people total.

To find each fraction, just put the number of students/parents/teachers over 50 and simplify.

Students
28/50=14/25

Parents
18/50=9/25

Teachers
4/50=2/25

Hope this helps!
8 0
3 years ago
Read 2 more answers
What is the slope of the line that passes through points (-4, 5) and (3, -2)?
kherson [118]

Answer:

-1

Step-by-step explanation:

Complete y2 - y1 over x2 - x1 with your given points:

-2 - 5     =        -7

_____          ____

3 - (-4)    =        7

= ⁻⁷⁄₇ = -1   Simplify to lowest term

7 0
3 years ago
The sum of 5 times a number and 16 is 31.<br> What is the number? <br> Enter your answer in the box.
agasfer [191]

Answer:

I will do a step by step explanation to help you.

First, subtract 16 from 31 so you can simplify what you need to find. We will call the unknown number X. So 5x = 15

15/5 = 3 so X = 3

Lets plug in X

3 x 5 + 16 = 31

Makes sense!

Hope this helps

8 0
3 years ago
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mrs papica bought 20 cupcakes for her class. one-half of them have chocolate frosting and one-fourth of them have vanilla frosti
Jobisdone [24]
Chocolate- 20×.5= 10  Vanilla-20×.25=5  Strawberry- 20×.25=5   10+5+5=20
8 0
4 years ago
Target is having a Back to School sale where all polo shirts are discounted by 20%. Joshua wants to buy five shirts: two cost $1
Sholpan [36]

Answer:

Both cases will give the same price

Step-by-step explanation:

The total purchase that Joshua do will be:

2* $10.98 + 1 * $11.50 + 2* $15.99 = $65.44

Let's compare the price for both scenario

1. If the tax added before discount

taxed price $65.44 * (100+6.5)% =$69.6936

discounted price= $69.6936* (100-20)%= $55.75488

2. If the tax added after the discount

discounted price= $65.44 * (100-20)%= $52.352

taxed price $52.352 * (100+6.5%) = 55.75488

Both prices will be the same since the operation in this calculation is only multiplication.

5 0
3 years ago
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