All categories

3 years ago

Barry Allen's older brother is only 3 years more than triple Barry's age. If the sum of their ages is 28, find their ages

2 answers:

3 0

B and a
barry=b
a=older bro

a is 3 more than 3b
a=3+3b
sum is 28
a+b=28
3+3b+b=28
3+4b=28
minus 3 both sides
4b=25
divide both sides by 4
b=6.25

a=3+3b
a=3+3(6.25)
a=3+18.75
a=21.75

barry=6.25 years
21.75 years=older bro

Juli2301 [7.4K]3 years ago

3 0

Answer:

Step-by-step explanation:

That's how old Barry is in season 1 of the Flash

You might be interested in

Fill in the blank. Give O below, you can conclude that DF is congruent to _____.

lakkis [162]

Answer:

B. BC

Step-by-step explanation:

4 0

3 years ago

Type the correct answer in each box. if necessary, use / for the fractions bar(s).

Paha777 [63]

The answer is 1/3 and the second box is -1/3

7 0

3 years ago

In 1992, the average electric bill for a single

Aleksandr [31]

Answer:

Price went up, $24.64/year for 28 years

Step-by-step explanation:

Change Year = 28

Change Price = 690

Average rate = 690/28 = 24.64

6 0

3 years ago

A proportional relationship is shown in the table below: what is the slope and what numbers do i graph. ty besties

dangina [55]

Answer:

The slope of the line is $m = \frac{3}{5}$ and the equation of the line is $y = \frac{3}{5}\cdot x$ .

Step-by-step explanation:

From table we understand that slope of the line is constant, that is, for each change of $x$ there is one and only change in $y$ , fulfilling the main characteristic of a line and we can determine the slope for every point of the line by means of the following expression:

$m = \frac{y_{f}-y_{o}}{x_{f}-x_{o}}$ (1)

Where:

$x_{o}, x_{f}$ - Initial and final x-coordinates of the line.

$y_{o}, y_{f}$ - Initial and final y-coordinates of the line.

If we know that $(x_{o}, y_{o}) = (0,0)$ and $(x_{f},y_{f}) = (8,4.8)$ , then the slope of the line is:

$m = \frac{4.8-0}{8-0}$

$m = \frac{3}{5}$

From graph we conclude that x-intercept of the line is $b = 0$ . Hence, the equation of the line is $y = \frac{3}{5}\cdot x$ and we proceed to plot the expression with the help of a graphing tool.