3 years ago

Combine like terms to simplify the expression. 5x + 4 + 2x + 5 will give 20 if you can answer my next question

Mathematics

1 answer:

sp2606 [1]3 years ago

4 0

5x + 4 + 2x + 5

First add the like terms.

You will get this: 7x + 9

And these can't be simplified anymore because they do not both go into the same multiple.

So your answer will be:

7x + 9

You might be interested in

The diagram below shows a square cardboard with an area of 132.25 cm ².A square of side x cm is cut and removed from each of its

PilotLPTM [1.2K]

Answer:

i think it's 10.6

Step-by-step explanation:

112 = x^2

4 0

2 years ago

if the sum of a number and nine is doubled, the result is seven less than the number. find the number.

avanturin [10]

X=the number we have to find.
This expression "2(x+9)" is when the sum of a number and nine is doubled.
If the result is seven less than the number, we will have: x-7

We can suggest the following equation:
2(x+9)=(x-7)
2x+18=x-7
2x-x=-7-18
x=-25

answer: the number would be: -25.

3 0

2 years ago

Solve using Quadratic Formula x^2 + 3x - 3 = 0

katrin [286]

Answer:

a= 1 , b= 3 , c= –3

$x = \frac{ - b \frac{ + }{} \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 3 \frac{ + }{} {} \sqrt{ {3}^{2} - 4(1)( - 3)} }{2(1)} \\ = \frac{ - 3 \frac{ + }{} \sqrt{9 + 12} }{2} = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = 0.79 \\ x = - 3.79$

I hope I helped you^_^

4 0

2 years ago

N six years, john will be four times as old as mary is right now. right now, john is twice as old as mary. how old is john

Temka [501]

John is 6 years old and mary is 3.

4 0

3 years ago

Greg build a new pond which has a volume of 7.35m3. It is 4.2m long and 50cm deep. What is the width of the pond?

Lady_Fox [76]

Volume = length * width * depth
width = Volume / (length * depth)
width = 7.35 / (4.2 * .5)
width = 3.5 meters

Double Check
Volume = 4.2 *.5 *3.5 = 7.35 cubic meters correct !!

6 0

2 years ago