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Slav-nsk [51]
3 years ago
10

Given x:y:z = 7:2:5 and the value of

Mathematics
1 answer:
Vitek1552 [10]3 years ago
3 0

Answer:

x + y + z = 123

Step-by-step explanation:

x:y:z = 7:2:5

Let x = 7a, y = 2a, z = 5a

Since x - z = 18

Therefore,

7a - 5a = 18

2a + 18

a = 18/2

a = 9

7a = 7*9 = 63

2a = 2*9= 15

5a = 5*9 = 45

x + y + z = 63 + 15 + 45

x + y + z = 123

You might be interested in
Which graph represents the function f(x)=−4x−3?
Evgen [1.6K]
<h2>Answer:</h2>

The graph on the top left.

<h2>Step-by-step explanation:</h2>

f(x) = -4^x - 3

That means that when x = 0...

f(0) = -4^0 - 3

f(0) = -1 - 3

f(0) = -4

So, the function will have a point at (0, -4). We can eliminate the two graphs on the right.

When x = 1...

f(1) = -4^1 - 3

f(1) = -4 - 3

f(1) = -7

So, the function will have a point at (1, -7). That corresponds to the graph on the top left.

<h2>Hope this helps! </h2>
6 0
4 years ago
Does anyone know how to find x and y?? If so please help! Pictures would help too!!
finlep [7]

Answer:

y=13.3333...

x=6

Step-by-step explanation:

y=20/1.5

y=13.3

x=9/1.5

x=6

8 0
3 years ago
Hi can you help me guys please
aliina [53]

The height of the cylinder will be 5 units based on the information given.

<h3>How to calculate the height?</h3>

The cylinder has a volume of 45π cubic meters and the radius is 3 units.

The height will be calculated thus:

Volume of a cylinder = πr²h

45π = πr²h

45π = π(3²)h

45π = 9πh

h = 45π/9π

h = 5

Therefore, the height of the cylinder will be 5. units.

Learn more about volume on:

brainly.com/question/12410983

#SPJ1

7 0
2 years ago
The area of a table is 8ft^2 and the length is 4ft. The width of the table top is?
Natalka [10]
The formula for area is A = L*W or we can say A=LW. Lets plugin what we know.

A = LW
8 = 4W
Now solve for W
8 = LW
8=LW
8/4 = 4W / 4
2 = W
W = 2

So the width is 2ft
6 0
4 years ago
Find the slope of the line:
aleksley [76]
The slope of that line would be:

5,8!

have a great day!
8 0
3 years ago
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