MATHEMATICS MIDDLE SCHOOL

Really need helpEighty decreased by three times a number os the same as five times the number increased by eight find the number
i am really confused

Answers

Answer 1
Answer: 3n - 80 = 5n + 8\n3n=5n + 88\n -2n = 88\n\n n = -44

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If BC=6x+4 AC=52 and AB=4x+8 find BC
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Distribute 5(2s^2-3s+4)

Answers

10s^2-15s+20 is the answer according to distributive property

Your answer would be 10s^2 - 15s + 20

What does y=3x mean on a line graph

Answers


In order to do this you need to follow these five 
1) Know what each of the variables mean in an equation of a line. The equation of a line is y = mx + b where y = y-coordinate, m = slope, x = x-coordinate, and b = y-intercept. 

Express 5.37 as a mixed number

Answers

The mixed number will be of form 5 37/100 .

Given,

Decimal number = 5.37

Here,

To turn a decimal into a mixed number we write the number in front of the decimal point.

We look at the numerator and the denominator and make the decimal a mixed number.

In this case, we have the number 5.37 .

Thus first convert the number into simple fraction,

Divide the number by 100.

Fraction form = 537/100

Now,

To convert the number into mixed form,

separate the whole number and decimal form to get the mixed number .

Whole number = 5

Decimal number = 0.37

Mixed form = 5 37/100

Know more about fractions,

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Hi there, to turn a decimal into a mixed number we write the number in front of the decimal point. Then, we look at the fraction part which is the part after the decimal. We look at the numerator and the denominator and make the decimal a mixed number. In this case, we have the number 5, like I said, we write the number in front of the decimal point which is 5. We have the number 37, 37 is going to be the numerator and the denominator is going to be 100. Now, we have 537/100, but you asked what is 5.37 as a mixed number is 5 37/100.

Solve and graph the inequality 6 + 3n ≤40

Answers

6+3n≤40
Use inverse operations i.e.
4x+2<10
    -2    -2
4x<8
4*x/4<8/4
x<2

Which fraction is represented by point A on the number line?

Answers

Answer:

- 1/3

Step-by-step explanation:

Answer:

The answer is - 1/3 .

Step-by-step explanation:

There are 7 people at a party. If each person shakes the hand of everyone exactly once, how many handshakes will take place

Answers

Call the number of people n.

Looking at the first person, they can shake hands with n-1 other people (since they can't shake hands with themselves.) 

For the second person, they can shake hands with n-2 other people. (They can't shake hands with themselves and they already shook with Person 1, on Person 1's turn.

If we carry on this way we see that the total number of shakes is given by:
(n-1)+(n-2)+...+2+1 which simplifies to: (n(n-1))/(2).

For n=7 we then have:
S=(7(7-1))/(2)=(7(6))/(2)=(42)/(2)=21
OR
S=(7-1)+(7-2)+(7-3)+(7-4)+(7-5)+(7-6)=6+5+4+3+3+2+1=21
There will be 42 handshakes
There will be 42 handshakes
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