All categories

3 years ago

Two less than 2 times a numberis the same as the number plus 64.What is the number?

Mathematics

2 answers:

zepelin [54]3 years ago

5 0

2x - 2 = x + 64

2x - 66 = x

66 = x

2(66) = 132. 132 - 66 = 66. 66 = x.

bixtya [17]3 years ago

3 0

The number is 66 hope this helped

You might be interested in

What is the average rate of change on the interval from 3 to 9?

sammy [17]

Answer:

Step-by-step explanation:

3 0

3 years ago

Please see image below

vovangra [49]

D is the answer I believe

6 0

3 years ago

(MATH, RATIOS) help please I really need to get this done

Marysya12 [62]

Where’s the picture?

8 0

3 years ago

Quadratic Equation

Natasha_Volkova [10]

Step-by-step explanation:

The sum of ages of two friends is 13 years.

The product of their ages is 42.

Let the age of 1st friend and 2nd friend is x, y respectively.

1 st condition= The sum of ages of two friends is 13 yrs.

i.e x+y = 13........ (I)

2nd condition= The product of their ages is 42.

i.e X*y = 42........(ii)

From equation (I)

X+y = 13

or, X = 13-y........ (iii)

Putting the equation (iii) in equation (ii).

X*y= 42

(13-y) * y = 42

13y - y^2 = 42

${y}^{2} - 13y + 42 = 0$

${y}^{2} - (7 + 6)y + 42= 0$

${y}^{2} - 7y - 6y + 42 = 0$

$y(y - 7) - 6(y - 7) = 0$

$(y - 6) (y - 7) = 0$

Either; y-6 = 0

y = 6

Or;

y-7=0

y = 7

Keeping the value of y as "7" in equation (ii)

x*y = 42

7x = 42

X = 42/7

Therefore, the value of X is 6.

Therefore, either 1st friend is 6 years and 2nd is 7 years.

Hope it helps...

7 0

3 years ago

A shopkeeper sold a radio of rs 1150 which is 115% of cost price. Find the profit percent of the radio

abruzzese [7]

Answer:

1/9 of 11

Step-by-step explanation:

Firstly find sp and then calculate

8 0

3 years ago