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just olya [345]
3 years ago
11

Melody's friend Leena earns $15 per hour as a lab technician plus an extra $300 per week for singing at a club on the weekend.

Mathematics
1 answer:
mestny [16]3 years ago
4 0

Answer:

15n+300=720

Step-by-step explanation:

15n+300=720

-300 from both sides

15n=420

divide both sides by 15

n=28

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The mark in a subject for 12 students are as follows 31`, 37 ,35,38 ,42 ,23,17,18 ,35,25, 35,29
just olya [345]

Answer:

Mean (Average): 30.416666666667

Median: 33

Range: 25

Mode: 35, appeared 3 times

Step-by-step explanation:

8 0
2 years ago
20 POINTS Find the diameter?? Pls help I dont know what to do..
Akimi4 [234]

Answer:

Diameter = 19.33

Step-by-step explanation:

Imaging a radius line from O to the endpoints of the 7. call this line R.

Label the part of the vertical line from O to the 90 degree intersection y.

Now you have a right triangle.

Using the Pythagorean theorem:

R² = 7² + y²

also

y = R - 3

substitute for y:

R² = 49 + (R-3)²

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simplify:

0 = 58 - 6R

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7 0
3 years ago
A newspaper advertisement offers a $6500 used car for nothing down and 36 easy monthly payments of
NNADVOKAT [17]

Using simple interest, it is found that:

  • The total amount paid was of $7,084.8.
  • The finance charge was of $584.8.
  • The simple interest rate was of 3%.

<h3>Simple Interest</h3>

Simple interest is used when there is a single compounding per time period.

The amount of interest after t years in is modeled by:

I = Prt

In which:

  • P is the initial amount.
  • r is the interest rate, as a decimal.

In this problem, the amount paid was of 36 monthly payments of

$196.80, hence:

36 x 196.80 = $7084.8.

The total amount paid was of $7,084.8.

The original price is of $6,500, hence the finance charge was of:

7084.8 - 6500 = $584.8.

For interest, we have that:

I = 584.8, P = 6500, t = 3, hence:

I = Prt

584.8 = 6500(3)r

r = \frac{584.8}{6500 \times 3}

r = 0.03

The simple interest rate was of 3%.

More can be learned about simple interest at brainly.com/question/25296782

3 0
2 years ago
3. The circumference of a circle is 607 cm. What is the diameter of the circle?
steposvetlana [31]

Answer:

the circumference is 30 cm,

Step-by-step explanation:

Hope it helps

8 0
2 years ago
On a coordinate plane, a line goes through points (1, negative 1) and (2, 4). This graph displays a linear function. What is the
Nikolay [14]
Bueno yo no sé djdjxsdcv

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