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maw [93]
2 years ago
7

If 5x:(x-2) = 11:3 , find the value of x ?​

Mathematics
2 answers:
Zigmanuir [339]2 years ago
6 0

Answer:

5 whole number 1/2

Step-by-step explanation:

5x:(x-2)=11:3

(:)This simply means ''ratio''

5x/(x-2) = 11/3

(cross multiply)

11(x-2) = 3(5x)

11x-22 = 15x

collect like terms

15x - 11x = 22

4x = 22

x = 22/4, but it is best you put it as a Mixed number.

x = 5 whole number 2/4, which can be reduced to

x = 5 whole number 1/2

Masteriza [31]2 years ago
5 0

Answer:

x = -11/2

Step-by-step explanation:

The ratios need to stay the same

5x        11

----- = -------

x-2       3

Using cross products

5x*3 = (x-2) 11

15x = 11x - 22

Subtract 11 from each side

15x-11x = -22

4x = -22

x = -22/4

x = -11/2

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Solve the system of linear equations by substitution.<br> 3x + y = -9<br> y=5x+7
11Alexandr11 [23.1K]

Answer:

The solution is x = -2, y = -3

Step-by-step explanation:

Let's start with the equation 3x + y = -9

Substitute the y for 5x+7 seen in the second equation

Now you have 3x + (5x+7) = -9

Lets solve:

Let's add the x's

Now we have 8x + 7 = -9

Substracy seven from each side

Now we have 8x = -16

Now let's divide 8 on each side

Now we have x = -2

Now lets plug in -2 to the second equation

The second equation is y = 5x+7

When we plug in -2 we get y=5(-2)+7

We multiply

We now have y = -10+7

Add

y = -3

The solution is x = -2, y = -3

8 0
3 years ago
1. Divide
BartSMP [9]

Answer:

656×756÷765+656+65=

Step-by-step explanation:

it was soo easy now i get what it is talking about no

6 0
3 years ago
Select all of the fractions that are equivalent to -2/3 –3/-2 -3/2 2/-2 2/-3 2/3 -2/-3 Please hurry and help I really need it​
lianna [129]

Answer:

2/-3

Step-by-step explanation:

Hope this helped. And I know that you can choose more than one, but I'm pretty sure this is the only one that's equivalent to -2/3

5 0
3 years ago
A forecast is defined as a(n) a. set of observations on a variable measured at successive points in time. b. prediction of futur
marshall27 [118]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
If n represents an odd interge, write expressions in terms of n that represents the next three consecutive odd integers. If the
Wewaii [24]

next three are n+2, n+4, and n+6

four consecutive odd have sum 56

n + n+2 + n+4 + n+6 = 56

4n + 12 = 56

4n = 44

n = 11

the numbers are 11, 13, 15, and 17

6 0
3 years ago
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