73. If R, S, and T are integers and R + S and

Mathematics

1 answer:

Vlad [161]3 years ago

3 0

R+S is odd==>R+S=2n+1 (1)
T-S is odd ==>T-S=2k+1 (2)
(1)+(2)==>R+T+S-S=2n+1+2k+1
==>R+T=2(n+k+1) is even

Answer A

You might be interested in

What is the standard form of the equation 9(g-5h)

Lyrx [107]

9g-45h, you have to distribute 9

4 0

2 years ago

Describe the steps you can use to find an average of fractional amounts.

oksano4ka [1.4K]

Add up the fractional amounts and divide them by however many amounts there are..........

eg.

Step 1:Add the fractions
1/6 + 5/8 +3/4
(find the LCD)
1/6 + 5/8 + 3/4 = 4/24 + 15/24 + 18/24 = 37/24

Step 2: Divide the sum by the number of numbers in the set
37/24 ÷ 3= 37/24 ÷ 3/1= 37/24 X 1/3= 37/72

<span>So the mean (average) is 37/72</span>

5 0

3 years ago

7v=2v-20 what is the answer

Ierofanga [76]

7v = 2v - 20

First, subtract 2v from both sides. / Your problem should look like: 7v - 2v = -20
Second, simplify 7v - 2v to 5v. / Your problem should look like: 5v = -20
Third, divide both sides by 5. / Your problem should look like: v = $- \frac{20}{5}$
Fourth, simplify $\frac{20}{5}$ to 4. / Your problem should look like: v = -4

Answer: v = -4

7 0

3 years ago

Identify the solution for the system of equations graphed here.

Allushta [10]

The answer is c. (1,-1)

7 0

2 years ago

Read 2 more answers

It costs $2.00 per hour to park in the parking deck. Ben parks for 3 hours. The automated machine used for payment will only acc

astraxan [27]

Answer:

24 quarters