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Debora [2.8K]
3 years ago
11

How do you explain mental math to multiple two numbers

Mathematics
1 answer:
Fantom [35]3 years ago
7 0
When multiplying two numbers, a person can mentally add one of those numbers the other number amount of times.
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Hi, I need help.
slavikrds [6]

Answer:

B, 24 (second answer choice)

Step-by-step explanation:

4r+7s=23

r-2s=17

8r+14s=46

7r-14s=119

15r=165

r=11

11-2s=17..........by putting value of r in ii

-2s=17-11

2s= -6

s= -3

3r+3s=3*11+3(-3) you get this by putting values of r and s

       =33-9

       =24    (B)

7 0
3 years ago
Read 2 more answers
Calculate 11010-1101 in base 2​
stiv31 [10]

Answer:

1101 base 2

Step-by-step explanation:

you first take the larger number up the the lower number down

  • 11010 -1101
  • when dividing if it's zero you borrow one from the number on the left hand side
  • since it's in base 2 the number you borrow would be 2 then u subtract
  • I hoped it helped u
6 0
3 years ago
BRAINLIEST ASAP! PLEASE HELP ME :)
Drupady [299]
The answer is √91,10
6 0
3 years ago
Read 2 more answers
Helpp please find the value of s! I will give brainlist
goldenfox [79]

We have :

s - 39⁰+ s - 9⁰ = s + 29⁰

s + s - s = 29⁰ + 9⁰ + 39⁰

s = 77⁰

Answer: 77⁰

Ok done. Thank to me :>

8 0
3 years ago
Witch equation represents a linear function
olya-2409 [2.1K]
Y=3x2+1
Hope this helped :)
5 0
3 years ago
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