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2 years ago

Check over my math please.

Mathematics

1 answer:

sineoko [7]2 years ago

7 0

Answer:

It looks like everything is correct :)

Step-by-step explanation:

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PLEASE HELP!!!! WILL GIVE 50 POINTS!!!!

Simora [160]

Answer:

you have to set the points to 100 to give 50 cuz 2 people answer the question lol

Step-by-step explanation:

6 0

3 years ago

Jessica lived in spain and colombia for a total of 18 months in order to learn spanish. She learned an average of 160 words per

Artyom0805 [142]

Answer:

Jessica spent 10 months in Spain and 8 months in Colombia.

Step-by-step explanation:

Let x be the number of months Jessica lived in Spain, then she lived 18 - x months in Colombia.

She learned an average of 160 words per month when she lived in Spain, so she learned 160x words in Spain.

She learned an average of 200 words per month when she lived in Colombia, so she learned 200(18-x) words in Colombia.

In total, she learned a total of 3,200 new words, thus

$160x+200(18-x)=3,200\\ \\160x+3,600-200x=3,200\\ \\160x-200x=3,200-3,600\\ \\-40x=-400\\ \\x=10$

Jessica spent 10 months in Spain and 8 months in Colombia.

5 0

3 years ago

Scott took out a 4-year car loan for $5,500. He paid back a total of $7,370. What interest rate did he pay for this loan?

elena-14-01-66 [18.8K]

Amount of car loan taken by Scott = $5500
Amount of loan paid back by Scott = $7370
Then
Amount of money paid as interest by Scott = (7370 - 5500) dollars
   = 1870 dollars
Then
Percentage of interest given for the car loan = (1870/5500) * 100
   = 1870/55
   = 34 percent
So Scott had to pay a total interest rate of 34% in the four years.I hope the procedure is simple enough for you to understand and solve future problems.

7 0

3 years ago

Use the functions to answer the question.

Ksivusya [100]

Composition function rule (f○g)(x) = f(g(x))
Given the separate functions: $f(x)=2x+1$ and $g(x)=x^2$

$(f\circ g)(-5)\rightarrow\text{ Composition Function Rule}\rightarrow f(g(-5))=2((5)^2)+1$
$\rightarrow2(25)+1=50+1=51$

4 0

3 years ago

Find the volume of a cylinder that has a radius of 7 and a height of 18.

ch4aika [34]

Answer:

V = 882pi units^3

or approximately

2769.48 units^3

Step-by-step explanation:

The column of a cylinder is given by

V = pi * r^2 * h

We know the radius is 7 and the height is 18

V = pi * 7^2 *18

V =pi *49 *18

V =882 pi

If we want an approximate answer, we can approximate pi by 3.14

V = 3.14 * 882

V =2769.48

7 0

3 years ago

Read 2 more answers