MATHEMATICS MIDDLE SCHOOL

3/4 (4c + 16) = 2c ÷ 9. what is c

Answers

Answer 1

Answer:

Distribute

(3/4)(4c)+(3/4)(16)=2c/9

3c+12=2/9 c

Now subtract 2/9 c from both sides

3c+12-2/9 c=2/9 c-2/9 c

25/9 c+12 =0

Now we need to subtract 12 from both sides

25/9 c+12-12=0-12

25/9 c=-12

Just multiply both sides by 9/25 so we find the value for c

25/9 *(25/9 c)=-12(9/25)

c= -108/25

I hope that's help:0

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Least common multiple of 78 90 140

Answers

78= 2x3x13
90= 2x3x3x5
140= 2x2x5x7
13x3x3x2x2x5x7= 16,380

What is a reasonable estimate for 1 3/4+ 1 1/4+ 1/16

Answers

$1(3)/(4)$ + $(11)/(4)$ + $(1)/(16)$
1st step: Change the mixed fractions to improper fractions:
$1(3)/(4)$ = $(7)/(4)$
2nd step: Find a common denominator
16 is the common denominator
$(7*4)/(4*4)$ + $(11*4)/(4*4)$ + $(1)/(16)$
= $(28+44+1)/(16)$
= $(73)/(16)$
As a mixed fraction:
= $4(9)/(16)$

13/4 rounds to about 3, 11/4 rounds to 3, and 1/16 rounds to 0. So a resonable estimate would be about 6.

What point on the number line represents sea level?

Answers

Zero because the height of land and depth of places is measured according to sea level which is considered the baseline

the answer here would be 0
.................

Use the Distributive property to rewrite each expression in it's equivalent form -7y(4-y)
please show your work !!
hello students from all over the world ! please , someone be kind enough to help me on this math problem ( if u are in 7th grade or higher u can handle it !) :)
grade of the question : 7th grade
subject : math, please help me thanks !! :)

Answers

The arrows indicate that you multiply each one, that way you don't forget in the long run, especially once you get to multistep algebraic equation.

So first you multiply the -7y by the 4 and you get -28y, if you remember a negative times a positive is a negative (I like to think of it as bad things that happen to good people is a bad thing ;) ) Now you take the -7y, because you have to multiply it by both numbers in the parenthesis, and multiply it to the -y, and since when you multiply two y's together it becomes squared it is 7y^2 (squared) and since both are negative, they cancel out and become a positive (bad things that happen to bad people is a good thing in a sense) So therefore your answer for the equivalence is 7y^2 + -28y

Hope that helped, my math teacher has a lot of tricks for remembering this stuff :)

Distributive property is just saying multiply something. So you get -7y times 4, that gives you -28y for the other part you are going to do the same. But in this time y is being multiplied by it self so that mean that it is going to be something with an exponent. The answer for the second part is 7y^2 it turned into a positive because a nagar ice times a negative turns into a positive.

A chess club with 60
members is electing a new president. Charmaine received
51
votes. What percentage of the club members voted for Charmaine?

Answers

85 percent of the votes

An aquarium is on sale for 59.50 & price represents 15% discount of original price, what is original price

Answers

59.50 x .15 = 8.93
59.50 + 8.93 = 68.43

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