Ask question

Ask question

All categories

WINSTONCH [101]

3 years ago

12

The sum of the ages of two brothers is 46. The younger brother is 10 more than a third of the older brother’s age. How old is th

e younger brother?

1 answer:

andreev551 [17]3 years ago

7 0

If the older brother is 27...27/3=9...+10=19....and 27+19=46. So the math works out, the younger brother is 19.

You might be interested in

Help pleasee ill give u the crown or whatever its called

Gnom [1K]

Answer:

8 ounce can for 0.25

Step-by-step explanation:

Hope this will help!!!

5 0

3 years ago

Y=-x^2+2x+10<br> y=x+2<br><br> Substitution<br> Need ASAP

aniked [119]

Answer:

$x_1=\frac{1+\sqrt{33} }{2},y_1=\frac{5+\sqrt{33} }{2}\\ \\ x_2=\frac{1-\sqrt{33} }{2},y_2=\frac{5-\sqrt{33} }{2}$

Explanation:

You must find the solution of the system using the substitution method.

System:

$y=-x^2+2x+10\\\\ y=x+2$

Substitute x+2 for y:

$x+2=y=-x^2+2x+10$

Pass all the terms to one side:

$x^2-2x+x+2-10\\ \\ x^2-x-8=0$

Use the quadratic formula to solve:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\ \\ x=\frac{-(-1)+/-\sqrt{(-1)^2-4(1)(-8)} }{2(1)}\\ \\ x=\frac{1+/-\sqrt{1+32} }{2}$

$x_1=\frac{1+\sqrt{33} }{2}\\ \\x_2=\frac{1-\sqrt{33} }{2}$

Use y = x + 2 to find the value of y:

$y_1=2+x_1=2+\frac{1+\sqrt{33} }{2}\\ \\y_1=\frac{5+\sqrt{33} }{2} \\\\y_2=2+x_2=2+\frac{1-\sqrt{33} }{2}\\ \\ y_2=\frac{5-\sqrt{33} }{2}$

6 0

3 years ago

What is 1,200 in a fraction

Mekhanik [1.2K]

1,200/1,200

Hope this helps!

6 0

4 years ago

Read 2 more answers

The average (arithmetic mean) of 5 numbers is 13. if the average of 4 of these numbers is 10, what is the fifth number?

choli [55]

The fifth number is 25

5 0

3 years ago

Solve the following system of equations by substitution. Make sure to check your solution. x + y = 5 3x - y = -5

Viktor [21]

First pick one that turns out to be a positive or negative

6 0

3 years ago

Read 2 more answers