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konstantin123 [22]
3 years ago
13

Two numbers have the ratio 7:5. Their difference is 12.Find the numbers.​

Mathematics
1 answer:
cupoosta [38]3 years ago
3 0

Answer:

42 and 30

Step-by-step explanation:

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28 + 8x = 8(x + 3) + 2<br><br>What is x? ​
SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

28 + 8x = 8x + 24 + 2

28 + 8x = 8x + 26

28 ≠ 26

no solution

3 0
3 years ago
Read 2 more answers
Tickets to a 3D movie cost $12.50 for adults and $8.50 for children. The theater can seat up to 180 people. A total of $1826 was
Serggg [28]

Let, number of children are x and number of adult are y.

Total number of seats, T = 180.

x + y = 180     ....1)

Tickets to a 3D movie cost $12.50 for adults and $8.50 for children.

So, total amount :

8.5x + 12.5y = A

8.5x + 12.5y = 1826    ....2)

Solving equation 1) and 2) , we get :

8.5x + 12.5( 180 - x ) = 1826

8.5x - 12.5x + 2250 = 1826

-4x = -424

x = 106

y = 180 - 106 = 74

Therefore, the number of adult tickets and the number of children's tickets that were sold are 74 and 106.

Hence, this is the required solution.

4 0
3 years ago
Jonathan has a collection of 400 marbles. Blue makes up 17% of his collection,how many blue marbles does Jonathan have?
Yuki888 [10]
So percent means parts out of 100 so 17%=17/100
400 marbles
17% of 400=blue
'of' can be translated to multiply
17%=17/100
17/100 ties 400=6800/100=68
he has 68 blue marbles
8 0
4 years ago
The unknown length. In simplest radical form
Lelechka [254]
6 \sqrt{2

thats your answer
6 0
3 years ago
My exam is so hard plz help
nevsk [136]

Answer:

There are four correct expressions.

Step-by-step explanation:

Four correct expressions:

{x}^{2}  - x - 42

{x}^{2} +6x −7x −42

x(x−7)+6(x−7)

2x +6x-7x−42

Simplify:

{x}^{2}  - x - 42

(x+6)(x−7)

x(x−7)+6(x−7)

2x +6x-7x−42

{x}^{2} −7x+6x−42

{x}^{2}  - x - 42

<h3>Hope it is helpful....</h3>
6 0
3 years ago
Read 2 more answers
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