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exis [7]
3 years ago
14

This question in algebraic expression and number form : the difference between 20 and x

Mathematics
1 answer:
inysia [295]3 years ago
8 0

Answer: Let the numbers be x and y.

x+y = 20 …(1)

x-y = 10 …(2)

Add (1) and (2)

2x = 30, or x = 15, and so y = 5.

The product of the two numbers = xy = 15*5 = 75.

Step-by-step explanation:

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Oduvanchick [21]

Answer:8f-16g

Step-by-step explanation:

-1f•(-8)-4g•4

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3 years ago
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What's the s in 9=s/3??
stira [4]

Answer:

27 =s

Step-by-step explanation:

9=s/3

We want to isolate s, so we will multiply by 3 on each side

9*3 = s/3 *3

27 =s

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3 years ago
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Select all the expressions which are equivalent to three times the sum of six and five.
Zinaida [17]

Answer:

A b c

Step-by-step explanation:

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Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. She knows she made a mistake,
Sholpan [36]

Answer:

12 times 5=60 not 70

Step-by-step explanation:

12(5+2y)=4y-(5-9y

60+24y=4y-5-9y

60+24y=-5y-5

29y+60=-5

29y=-65

y=-65/29 or y= about -2.38

brainliest please

5 0
2 years ago
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Divide 4 2/3 & 3 1/3. Simplify the answer and write it as a mixed number.
Leto [7]

Answer:

4 2/3 ÷ 3 1/3= 1 2/5

Step-by-step explanation:

First, you turn the mixed terms into an improper fraction like this

4 2/3 → 14/3 because when you multiply 4 times 3 equaling 12 then having 2 then adding that you get 14/3.

3 1/3 → 10/3 because when you multiply 3*3=9 then having 1 and adding that you get 10/3.

Then, you do KCF which stands for <u>Keep Change Flip</u> so for this you would do: 14/3 ÷ 10/3 → 14/3 × 3/10

14 × 3 = 42 and 3 × 10= 30

Now being 42/30 this is considered an improper fraction in which you have to transform it into a mixed number like this:

(For this you need to find the greatest common factor)

42/30 →  42 and 30 greatest common factor is 6 because they are divisible and factor of 6.

Now you divide both the denominator and the numerator y 6 like this:

42 ÷ 6= 7

30 ÷ 6= 5

Now we have 7/5, this is still an improper number so we see how many times 7 can go to 5 which is once. So we have 1 as whole number, now we put the reminder as the numenator of the mix fraction keeping 5 as being the denominator.

Overall, We have our answer 1 2/5

I hope this helps :D  

7 0
3 years ago
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