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motikmotik
3 years ago
12

15 less than 4 times a number is 9 find the number

Mathematics
2 answers:
Dvinal [7]3 years ago
8 0
4x - 15 = 9
4x = 9 + 15 
4x = 24
x = 24/4
x = 6

hope this helps you
kifflom [539]3 years ago
6 0
Translating it into math figures:
4*?-15=9
lets say the question mark is x:
4*x-15=9
4x-15=9
adding 15 from both sides:
4x=24
now divide both sides by 4:
x=6
just to make sure it's correct, put it in the original equation
4*6-15=9
24-15=9 
:)
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A department store buys 300 shirts for a total cost of $7,200 and sells them for $30 each. Find the percent markup.
Novosadov [1.4K]

Answer:

80%

Step-by-step explanation:

because 7200 / 300 equals 24 and 24 / 30 equals .8 so its 80% and if you want to check the answer you take 30 * .8 OR 80% and it gives you 24

3 0
3 years ago
Read 2 more answers
Find the value of x that will make a || B
belka [17]

Answer:

x = 30

Step-by-step explanation:

4x + 2x = 180

6x = 180  

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4 0
3 years ago
HURRY HELP
Gelneren [198K]
<h3>Answer: Choice (a)  $1,653.66</h3>

=====================================================

Work Shown:

Use the compound interest formula

A = P*(1+r/n)^(n*t)

A = 10000(1+0.039/1)^(1*4)

A = 11,653.65589441

A = 11,653.66

That's the amount of money Tammy will have at the end of 4 years.

Subtract off the principal from this value to get the interest.

interest = A - P

interest = 11,653.66 - 10,000

interest = 1,653.66

7 0
3 years ago
POSSIBL
almond37 [142]

Answer:

Divide both sides by V

Step-by-step explanation:

The equation is not well written.

Mariko needs to solve the equation below for D. Here is the equation:

M = DV

For Mariko to get D, he needs to make D the subject of the formula by dividing both sides of the equation by the coefficient of D i.e V as shown;

Divide both sides by V

M/V = DV/V

V at the denominator will cancel out the V at the numerator to have:

M/V = D

Rearrange

D = M/V

Therefore, the statement which correctly describes the step he should take is:

Divide both sides by V. Option B is correct.

6 0
3 years ago
What is the answer for 2(a+b)=
Rainbow [258]
<h3>It is equivalent to 2a+2b</h3>

We use the distributive property.

Multiply the outer term 2 by each term inside ('a' and b)

2 times a = 2a

2 times b = 2b

We add those results to get 2a+2b. We cannot combine these terms as they are not like terms.

8 0
3 years ago
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