What is 2/4 + 4/5 - 7/10 ? Please help

Answers

Answer 1

Answer: Make sure they have all common denominators
$(2)/(4) + (4)/(5) - (7)/(10)$

$(2)/(4) * (5)/(5) = (10)/(20)$

$(4)/(5) * (4)/(4) = (16)/(20)$

$(7)/(10) * (2)/(2) = (14)/(20)$

$(10)/(20) + (16)/(20) - (14)/(20)$

Add $(10)/(20) + (16)/(20) = (26)/(20)$
$(26)/(20) - (14)/(20) = (12)/(20)$

To simplify, you must find the largest common factor which 4
In $(12)/(20)$
12÷4=3 and 20÷4=5

The answer is $(3)/(5)$

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Tickets to the movies cost $12 for adults and $8 for children. A group of 14 people went to the movies, and the tickets cost $136. The system of equations models this situation, where x is the number of adults and y is the number of children.x+y=14
12x+8y=136
How many adults and how many children were in the group?
A.
9 adults and 5 children

B.
6 adults and 8 children

C.
4 adults and 10 children

D.
8 adults and 6 children

Answers

-12*/x+y=14
12x+8y=136

-12x-12y=-168
12x+8y=136
+--------------------
-4y= -32

y=8

x+y=14

8+y=14,

y=6

This question answer is 6 adults and 8 children

A square has an area of 49,square feet. what is the perimeter of the square

Answers

The perimeter would end up being 28 inches.

You have to find the square root of 49, and then multiply that number by 4 to get your perimeter.

uh.i think it is 4.just think it is.im sry if i get it wrong.lamo d:

33.52 is what percent of 8 ?

Answers

to solve any equation like this you always use
____% of ___ is ____.
In this case it is
x% of 8 is 33.52
8x=33.52
x=4.19
x=419%

let the percentage be x. we can rephrase the question to be more clear by saying: x percent of 8 is 33.52 and find x. to put this line in terms of equations we write:
x(8) = 33.52
now we can solve for x by dividing both sides of the equation by 8:
x = 4.19
remember that we need to put our answer in percent form so we want (percent)/100 = 4.19 and therefore percent is 419.
our answer is 419%

let me know if you have any questions!

PLLLLLLZZZZZ HEEEEELLLLLPPPPP!!! Help will b appreciated

Answers

So I'm m 1 equals 65° m 2 is 130 you just multiply 65×2

mandy,jermey and lily went to an amusement park during their summer vacation mandy spent 16.25$ at the amusement park jermey spent $3.40 more than mandy spent lily spent 2times as much money as Jeremy spent how much did lily spend at the amusement park

Answers

Mandy: $16.25
Jermey: $16.25 + $3.40 = $19.65
Lily: $19.65 x 2 = $39.30
For Lily you would take the total of Jermey and times it by 2.

John purchased 1/4 lbs of hamburger for $0.75. How much did the hamburger cost per pound?

Answers

A 1/4 lbs burger is 1 part of 4. It cost 0.75. Take 4 parts times .75 and the anwer is 3.00

Answer:

3.00

Step-by-step explanation:

(=u.u=)0'

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