All categories

3 years ago

When Mr Lee was given a raise of 20%, his new salary was $1980.How much was his increase in his salary?

Mathematics

1 answer:

pishuonlain [190]3 years ago

7 0

Answer:

$330

Step-by-step explanation:

to find how much he earned before raise:

1.2x = 1980

x = 1980/1.2

x = 1650

current salary: 1980

former salary: 1650

he makes $330 more

You might be interested in

Use (<,>,=) to compare 2/3 and 3/4

lina2011 [118]

2/3 < 3/4. Hope that helps

3 0

3 years ago

After 5 tests Dara's average score was 88 what score must she average on the next two tests to have a seven-test average of 90?

Tomtit [17]

After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:

$90 \times 7 = 630$

Her average after 5 tests was 88. Her total score on the 5 tests is:

$88 \times 5 = 440$

Subtract:

$630-440 = 190$

Find the average by dividing by 2:

$190 \div 2 = 95$

Her average must be 95

3 0

3 years ago

ZanzabumX [31]

Answer:

x = 4 is the solution

Step-by-step explanation:

given = x ( square both sides )

x + 12 = x² ( rearrange into standard form )

x² - x - 12 = 0 ← in standard form

(x - 4 )(x + 3 ) = 0 ← in factored form

equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x + 3 = 0 ⇒ x = - 3

Insert these values into the original equation, and if both sides are equal, and those are the solutions.

x = 4 : = = 4 = x ← correct

x = - 3 : = = 3 ≠ - 3 ← false

the answer is x = 4

7 0

2 years ago

The price of a sandwich is $1.50 more than the price of a smoothie, which is d dollars. What does the expression d + 1.5 represe

tatuchka [14]

The price of a sandwich

6 0

3 years ago

4 (×+3)<44. Solve each inequality

mel-nik [20]

X+3<11
x<8

thatll be your answer

4 0

3 years ago