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Mathematics

1 answer:

alexdok [17]3 years ago

3 0

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Sixty-three less than 15 times a number is 72. what is the number?

exis [7]

Answer:

-3/5

Step-by-step explanation:

First represent this with numbers. Less means subtraction -, times means multiplication *, is means equals =.

And let's represent "a number" with x.

63 - 15x = 72

Solve for x. First subtract 63 from both sides.

-15x = 72-63

-15x = 9

x = -9/15 = <u>-3/5</u>

7 0

3 years ago

Read 2 more answers

Hi there I need help on this Monica wants to spend no more than $35

nikitadnepr [17]

Need to see more instructions.

6 0

3 years ago

A chess club has 500 members but is losing 30 members each year. A computer club has 130 members and is gaining 20 members per y

zhannawk [14.2K]

Equation:
500-30x=130+20x
Since you want to find when they are the same, you put an equal sign. Also, since one is gaining and the other is losing, you have an addition and subtraction sign.
Solution:
370= 50x
x=7.4
Answer:
After 7.4 years, the clubs will have the same members, which is 278 members.
Tell me if this helps!!

7 0

3 years ago

The terminal side of an angle in standard position passes through P(15, –8). What is the value of sine theta? sine theta = fifte

Pavlova-9 [17]

The value of sine theta = negative eight-seventeenths ⇒ 2nd

Step-by-step explanation:

Let us revise the quadrant of an angle its terminal side passes through a given point