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3 years ago

How do i solve x-y+8 if x=5 and y=3?

Mathematics

2 answers:

Ber [7]3 years ago

8 0

The answer to the expression is 10.

Substitute the values of x and y into the expression.

x-y+8

5-3+8

Subtract/add from left to right.

2+8

Vitek1552 [10]3 years ago

7 0

First, you input the numbers that have the variables. So the first equation would be 5-3+8. That equation equals 10.

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Which equation is equivalent to the formula m = ca? a = cm a equals m over c c = am c equals a over m.

disa [49]

The option b which is $a=\dfrac{m}{c}$ is correct answer.

Given to us:

$m=ca$

dividing both sides by c, we get

$m=ca\\\\\dfrac{m}{c}=\dfrac{ca}{c}$

canceling c from right hand side, we get

$\dfrac{m}{c}=a \\\\a=\dfrac{m}{c}$

Therefore, the option b which is $a=\dfrac{m}{c}$ is correct answer.

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2 years ago

Read 2 more answers

Subtract x^2-2x-6 from -6x+5

Roman55 [17]

Answer: x^2 + 4x - 1

Step-by-step explanation: simplify it

8 0

3 years ago

Help please :D ( math 6th grade )

Molodets [167]

Answer:

406 I believe is the answer

Step-by-step explanation:

14 times 5 = 70 and add that to 21 times 16 and you get the answer

8 0

2 years ago

Carlos and his friends are going to out to bowl, eat dinner, and see a movie. The starts at 8:10 p.M. And they want to arrive 20

Fantom [35]

Answer:

They should leave Carlo's house by 4:20 PM

Step-by-step explanation:

The movie starts at 8:10 pm, they want to arrive 20 minutes before the movie starts

20 minutes before 8:10 pm = 7:50 pm.

Hence, they should arrive by 7:50 pm

Duration of their activities before the movie is calculated as:

They will bowl for one hour and dinner will take 1 hour and 15 minutes. Travel time is 20 minutes to the bowling alley, 45 minutes ta the restaurant, and ten minutes to the theater.

: 1 hour + 1 hour 15 minutes + 20 minutes + 45 minutes + 10 minutes

= 2 hour 15 minutes + 75 minutes

= 2 hour 15 minutes +1 hour 15 minutes

= 3 hours 30 minutes in total.

The time they are meant to leave is calculated as:

7:50 pm - 3 hours 30 minutes

= 4:20pm

8 0

2 years ago

Twice the sum of two numbers is 24. if one number is 2 times larger than the other, what is the smaller of the two numbers?

Vikki [24]

2(x+y)=24
2x=y

Use substitution. If y=2x, than we can substitute 2x for it in the other equation, because x and y equal the same things in both equations.

So using that we get 2(x+2x)=24

SIMPLIFY
2(3x)=24

DISTRIBUTE
6x=24.

DIVIDE: x=4.

If we substitute x into the original equations we get x=4 and y=8. Those are your two numbers.

Have a nice day! :)

4 0

2 years ago