The sum of two numbers is -47 the difference is -39 find the numbers

Mathematics

2 answers:

neonofarm [45]3 years ago

7 0

X = -43 Y=-4 is the answer I think?

mash [69]3 years ago

4 0

Answer:

x = -43

y = -4

Step-by-step explanation:

In this question, you will have to find the value of x in terms of y using one of the equations and substituting the value in the other equation or vice versa.

Let's assume the numbers x and y, now we write the expressions.

x + y = -47

x - y = -39

Take the second equation and find x.

Calculations:

x - y = -39 (Add y on both sides)

x = -39 + y

Now that you got the value of x in terms of y, we can substitute.

Calculations:

(-39 + y ) + y = -47

2y - 39 = -47

2y = -8

y = -8/2 = -4

y = -4

Now that we got y, we can substitute that value in any of the equations to find x.

x - 4 = -47 or x + 4 = -39

x = -43

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Meg surveyed some students at her school about their favorite professional sports. Of the students surveyed, 2 said football was

elixir [45]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

Assuming a total of ten students were asked, $\frac{2}{10}$ chose football and $\frac{8}{10}$ chose other sports. $\frac{2}{10}$ simplified is $\frac{1}{5}$ , so that's the experimental chance that the next student favors football.