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erastovalidia [21]
3 years ago
8

Simplify 2x 2 - y for x = 3 and y = -2. A:10 B:16 C:20 D:14

Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

<h2>20</h2>

Step-by-step explanation:

Given,

X = 3

y = -2

Now,

2 {x}^{2}  - y

Plugging the value of X and y

2 \times  {(3)}^{2}  - ( - 2)

Calculate the product

= 2 \times 9 - ( - 2)

= 18 - ( - 2)

= 18 + 2

= 20

Hope this helps...

Good luck on your assignment

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The volume of a rectangular prism is 720in cubes if the area of the base is 90 in find it's height draw and label a model to sho
Dmitriy789 [7]
Do 720 divided by 90 and then draw 7 100 base blocks 2 ten blocks and tjen divide 9 10 blocks! hope that helped
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3 years ago
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Including a 7% sales tax, an inn charges $109.14 per night. Find the inn's nightly cost before tax is added.
hammer [34]
The answer is $102 per night before tax is added. This is because tax adds up to $7.14.

Hope this helps!
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2 years ago
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Shalane owns a flower nursery in a small town. She took an inventory of the number and types of flowers she sold this month.
Mrac [35]
So since 60+43+24+14+18+35+6= 200 and she sold 14 hyacinths out of those 200 flowers, you are trying to find how many flowers she should anticipate selling out of 2,000. The equation looks like this:
14/200 = ?/2,000
To find out what the value of ? is, find out how the denominators are related. To do this, do 2,000 divided by 200 which equals 10. To keep the fractions equivalent, what you do to the top, you must do to the bottom. So if 200 x 10= 2,000   14 x 10 will be your answer. 14 x 10= 140
14/200 = 140/2000

So, out of 2,000 flowers Shalane should anticipate selling 140 hycinths.

I hope this helps:)
6 0
3 years ago
Are the polygons similar? If they are, write a similarity statement and give the scale factor
Crank

Answer:


Step-by-step expSimilar polygons are two polygons with the same shape, but not necessarily the same size. Similar polygons have corresponding angles that are congruent, and corresponding sides that are proportional. ... If two polygons are similar, we know the lengths of corresponding sides are proportional.lanation:


8 0
4 years ago
lisa has 4 hours to study. she spends half her time on history, a fourth of the leftover time on chemistry and the rest on algeb
loris [4]

Answer:

I’m not sure what the question is since you are just giving me the information, but I’m gonna tell you this:

History >> 2 hrs

Chem >> 30 mins

Alg 2 >> 1 hr 30 mins

Hope this helps!

__________________________________

Step-by-step explanation:

4 hours << total

Half her time on history>>4/2>>2 hrs on history

Leftover time>>4-2=2 hrs left

A fourth of leftover time on chem>>2hrs/4 = 30 mins on chem

What’s left? 2hrs - 30 mins= 1hr and 30 mins << leftover <<alg 2

6 0
3 years ago
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