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earnstyle [38]
2 years ago
7

Four times the sum of two times X and six algebraic expression

Mathematics
1 answer:
umka21 [38]2 years ago
6 0

Answer:

4(2x + 6)

Step-by-step explanation:

2 times x is 2x

The sum of 2 times x and 6 is 2x + 6

And we do 4 times that, making sure to put 2x + 6 in parentheses; we're multiplying 4 times the entire sum.

4(2x + 6)

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if thrice my age 6 years ago be subtracted from twice my present age the result is present age then my present age is what​
aleksley [76]

Answer:

9 years

Step-by-step explanation:

Let the present age = x

Age 6 years ago = x - 6

Thrice my age 6 years ago = 3*(x -6) =3x - 3*6 = 3x - 18

Twice my present age = 2 *x = 2x

Thrice my age 6 years ago be subtracted from

twice my present age  = 2x -  (3x - 18)

2x - (3x - 18) = x

2x - 3x  + 18 = x                  

    -x  + 18 = x              {Add x to both sides}

             18 = x + x

              18 = 2x              {Divide both sides by 2}

           18/2 = x

x = 9 years

8 0
3 years ago
Two numbers have a difference of 0.7 and a sum of 1. what are the numbers?
Fofino [41]
<span>In order to determine the value of the numbers, we can set up algebraic equations to solve. For this case, we need to set up two equations since we have two unknown numbers. We do as follows:
 let x = first number and y = second number
 From the problem statement, we set up equations.
 Equation 1 - the numbers have a difference of 0.7
 x - y = 0.7
 Equation 2 - the numbers have a sum of 1
 x + y = 1
 Solving for x and y via substitution method,
 x - y = 0.7
(1-y) - y = 0.7
1 - 2y = 0.7
-2y = 0.7 - 1 = -0.3
y = 0.15 or 3/20
 x - 0.15 = 0.7
x = 0.85 or 17/20
 Thus, the two numbers are 0.15 and 0.85.</span>
6 0
2 years ago
How many terms are in the following expression:<br><br> 45x + 13x − 19 + 16/3(3)x − 21.5
Neporo4naja [7]

Answer:

45+13−19+163(3)⋅\−21.5   They also have a pdf if you need it

unit 6-10 answer key.pdf

Step-by-step explanation:

7 0
2 years ago
Round 550.320 to the nearest whole number. Enter your answer in the space<br> provided.
Mariana [72]

Answer:

550

Step-by-step explanation:

if the numbers after the point starts with a number greater than 5 than you would round the number to the next number (551) but if the number starts with a number lower than 5 then the whole number would be 550. For example: round 122.566 to the nearest whole number. It would be 123. Hope this helps!

3 0
2 years ago
Please help me answer!
kati45 [8]

Answer:

what is the question?

Step-by-step explanation:

4 0
2 years ago
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