3 years ago

Find the value of two numbersif their sum is 12 and their difference is 4

Mathematics

2 answers:

daser333 [38]3 years ago

7 0

The simple version is this

12-4= 8

Sonbull [250]3 years ago

5 0

We can set up a system of equations:

x + y = 12
x - y = 4

Adding these two together:

2x = 16
x = 8

Substituting 8 in the first equation:

8 + y = 12
y = 4

Hope this helps!

You might be interested in

What is the answer for this please 23÷23

baherus [9]

Answer:

Step-by-step explanation:

Any number divided by itself equals 1. So, 23 divided by 23 is 1.

8 0

1 year ago

What is 86.436 ÷ 12 show your work 34.86 ÷ 4 show your work 5.7 ÷ 15 show your work

liq [111]

86.436 divided by 12 equals 7.203. 34.86 divided by 4 equals 8.715. 5.87 divided by 15 equals 0.38.

8 0

2 years ago

Read 2 more answers

What is the square root of –16? –8i –4i 4i 8i

Ad libitum [116K]

we know that

$i^{2} =-1$

we have

$\sqrt{-16} =\sqrt{(-1)*(16)} =\sqrt{(-1)*(4^{2})}$

substitute the value of $i^{2}=-1$ in the expression above

$\sqrt{(-1)*(4^{2})}=\sqrt{i^{2}*4^{2}} \\ \\= 4i$

therefore

the answer is

$4i$

7 0

3 years ago

Read 2 more answers

Solve the math problem/ y-2x=3 3x-2y=5

stellarik [79]

Answer:

(x,y)=(-11,-19)

Step-by-step explanation:

3 0

2 years ago

Elisa's mom teaches at preschool. There is 1 teacher for every 12 students at the preschool. There are 276 students at the presc

Pavlova-9 [17]

12 students/1 teacher = 276 students/x teachers

Students are on top of the ratio and teachers are on the bottom of the ratio. It must remain the same on both sides of the equation.

12 x = 276

divide by 12

x =23

8 0

2 years ago