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monitta
3 years ago
14

The sum of twice a number, m, and 7 is equal to 15 less than the number,

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
4 0

Answer:

2m+7 = m-15

2m-m+7 = -15

1m = -15-7

1m = -22

m = -22

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At the grand opening, every 8th customer received a free coffee mug, and every 12th customer received a free baseball cap. How m
goldenfox [79]

8 people received a Baseball Cap

12 people received a Coffee Mug

Hope this helped!

7 0
3 years ago
F(x) = (x^3)-(3x^2)-3x+1<br> factor please
Anni [7]

Answer:

(x+1)(x²-4x+1)

Step-by-step explanation:

f(x) = x³-3x²-3x+1

     = (x³+1) - 3x (x+1)

     = (x+1)(x²-x+1) - 3x(x+1)

     = (x+1)(x²-x+1-3x)

     = <u>(x+1)(x²-4x+1)</u>

<u />

** (x+1)(x²-4x+1) = (x+1)((x-2)² - 3)

                        = (x+1)((x-2)² - (√3)²)

                        = (x+1)(x-2-√3)(x-2+√3)

5 0
2 years ago
*The sum of two numbers is 400. If the first number is decreased by 20% and the second number is decreased by 15%, then the sum
Dahasolnce [82]

Answer:

The two numbers are .8*160=128 and .85*240=204

Step-by-step explanation:

First sentence:                 x+y=400

Second sentence           .8x+.85y=400-68

Solve y in the first sentence:  y=400-x

Plug first into second:     .8x+.85(400-x)=332

Distribute:                        .8x+.85(400)-.85x=332

Combine like terms:        -.05x+.85(400)=332

Simplify(multiply):              -.05x+      340=332

Subtract 340 on both sides:    -.05x       =332-340

Simplify(subtract):                     -.05x        =-8

Divide both sides by -.05:              x        =-8/-.05

Simplify (division):                           x        = 160

So y=400-x=400-160=240

8 0
2 years ago
Read 2 more answers
What is greater 6 km or 6100 cm
Slav-nsk [51]
The answer to this question is 6 km

4 0
3 years ago
Read 2 more answers
cylinder A has a radius of 6 centimeters cylinder B has the same height and a radius half as long as cylinder A what fraction of
REY [17]
Volume of a cylinder=the area of the base multiply the height
Cylinder A's volume: pi*6*6*h=36*pi*h
Cylinder B's volume: pi*3*3*h=9*pi*h
so the fraction is 9/36=1/4
<span />
6 0
3 years ago
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