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Gelneren [198K]
3 years ago
12

Richard and Teo have a combination age of 31. Richard is 4 years older than twice Teo's age. How old are richard and Teo?

Mathematics
1 answer:
Tju [1.3M]3 years ago
6 0
Just form a simultaneous equation. <span />
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What should be subtracted from 13/(-56) to get 11/28​
zloy xaker [14]

Answer:

-5/8

Step-by-step explanation:

13/ -56   -x = 11/28

Add 13/56 to each side

13/ -56   + 13/56  -x = 11/28+ 13/56

-x = 11/28 + 13/56

Get a common denominator

-x = 11/28 *2/2 +13/56

-x = 22/56 + 13/56

-x = 35/56

Divide top and bottom by 7

-x = 5/8

Multiply both side by -1

x = -5/8

8 0
3 years ago
When you subtract a number, you get the same result as when you add the opposite of that number. Why?
Gnom [1K]

Answer:

because it's like ur telling me to add 2 to 3 then delete the 2 you get 3 again. So, it's like ur mirroring.

Step-by-step explanation:

7 0
3 years ago
Find the value of x.
finlep [7]

9514 1404 393

Answer:

  x = 20

Step-by-step explanation:

The external angle at V is half the difference of the subtended arcs:

  (65° -25°)/2 = x° = 40°/2

  x = 20

8 0
3 years ago
(-11)×[-52+(-17)-(-39)]
ANTONII [103]

Step-by-step explanation:

  • (-11)×[-52+(-17)-(-39)]
  • -11×[-52-17+39)]
  • -11×[-69+39]
  • -11×[30]
  • -330
5 0
3 years ago
Giving 20 points please help
Reika [66]

Step-by-step explanation:

for each top equation, there is a y value and an x value. You could plug in the bottom equation for y in the top equation since y=5x+23. Then you do order of operations and get your y-value. Then you do order of operations again and get your x-value. then its ordered pair, (x,y)

Right? I am so sorry if I am wrong <3

4 0
3 years ago
Read 2 more answers
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