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svetlana [45]
2 years ago
6

Combine like terms and simplify the expression: -2+6x+4+4x

Mathematics
2 answers:
serg [7]2 years ago
8 0
-2+6x+4+4x
=2+10x
hope it helps
Pani-rosa [81]2 years ago
4 0
The terms simplified are -2 + 14x
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A man is five times as old as his son. Four years ago the man was thirteen times as old as his son.
skad [1K]

Answer:

Age of son = 6 years

Age of man = 5×6 = 30 years

Step-by-step explanation:

<u>GIVEN :-</u>

  • A man is 5 times as old as his son. (In Present)
  • 4 years ago , the man was 13 times as old as his son

<u>TO FIND :-</u>

  • The present ages of the man & his son.

<u>SOLUTION :-</u>

Let the present age of son be 'x'.

⇒ Present age of man = 5x

4 years ago ,

Age of son = (Present age of son) - 4 = x - 4

Age of man = (Present age of man) - 4 = 5x - 4

The man was thirteen times as old as his son. So,

=> 5x - 4 = 13(x - 4)

Now , solve the equation.

  • Open the brackets in R.H.S.

=> 5x - 4 = 13x - 52

  • Take 5x to R.H.S. and -52 to L.H.S. Also , take care of their signs because they are getting displaced from L.H.S. to R.H.S. or vice-versa.

=> 13x - 5x = 52 - 4

=> 8x = 48

  • Divide both the sides by 8

=> \frac{8x}{8} = \frac{48}{8}

=> x = 6

<u>CONCLUSION :-</u>

Age of son = 6 years

Age of man = 5×6 = 30 years

8 0
2 years ago
I’m not quite sure how to answer this question.
Marina CMI [18]

When two shapes are mathematically similar, that means that all their sides are in a proportion.

We know the sieds of EH and AD, and so we can find the proportion of the shapes using these two sides.

EH/AD = 6/9 = 2/3

The ratio of EFGH to ABCD is 2:3

Now we have to find BC.

Becuase they're in proportion, we can form this equation:

\frac{8}{BC} = \frac{2}{3}

Cross multiply:

24 = 2*BC

Divide both sides by 2:

BC = 12 cm

Good luck!

6 0
3 years ago
39. You need to rent a car for a trip. Wrecko'mend charges $. 10 a mile plus a $30 flat fee. Rent a Wreck
Wewaii [24]

i think this is a systems of equations

putting this on a graph we have to equations:

y = 10x + 30

y = 20x

graph and find the intersection.

it has to be more than or equal to 3 miles i think for wreckomend

5 0
2 years ago
Byron has his own bakery. He bakes 84 cakes each week. How many can he make in one day?
Lerok [7]

Answer: 12 cakes

Step-by-step explanation:

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2 years ago
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lbvjy [14]

Answer:

11307.19 rounded and exact is 11307.1875

Step-by-step explanation:

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2 years ago
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