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Amanda [17]
3 years ago
13

If x varies directly with y and x = 3.5 when y = 14, find x when y = 18.

Mathematics
1 answer:
maks197457 [2]3 years ago
5 0

Answer:

x = 4.5

Step-by-step explanation:

there's definitely other ways to solve this, but I used a proportion.

\frac{3.5}{x} = \frac{14}{18}

Then you can make this equation:

14x = 3.5 * 18

I solved for it and got 4.5 .

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Which interval is the solution set to 0.35x - 4.8<5.2- 0.9x
stiks02 [169]

Answer:

Solution set {x|x<8}

Step-by-step explanation:

0.35x - 4.8<5.2- 0.9x

0.35x+0.9x<5.2+4.8

1.25x<10

x<10/1.25

x<8

Solution set {x|x<8}

4 0
3 years ago
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Evaluate 2xcubed if x= 3/4
Monica [59]

9514 1404 393

Answer:

  27/32

Step-by-step explanation:

2x³ for x = 3/4 is ...

  2(3/4)³ = 2·3³/4³ = 2·27/64 = 27/32

6 0
3 years ago
Which methods could you use to calculate the y-coordinate of the midpoint of a vertical line segment with endpoints at (0, 0) an
Tcecarenko [31]
The y-coordinate of the midpoint of a line segment is the average of the y-coordinates of the endpoints of the line segment.

This is: call y1 the y-coordinate of one endpoint and y2 the y-coordinate of the other endpoint of the line segment, then the midpoint is [y1 + y2] / 2.

The method, then, is to add the two y-coordinates and divide by 2.

For the vertical line segment with endpoints  (0,0) and (0,15) theprocedure is [0 + 15] / 2 = 15/2 = 7.5, and the result is 7.5
4 0
3 years ago
4. Find the value of x.<br> (4x - 101)<br> (2x+3)
Tanzania [10]

Answer:

bro there should be a value or a final answer of the question then only we can find the value

Step-by-step explanation:

hope it helps you

please mark me as brainlist

8 0
3 years ago
Tristan wants to buy a car and has a choice between two different banks. One bank is offering a simple interest rate of 3% and t
Mrrafil [7]

Answer:

The better deal would be simple interest rate of 3%

Step-by-step explanation:

In order to calculate which bank would be the better deal If Trsitam decides to deposit $7,000 for 4 years, we would have to make the following calculation:

simple interest rate of 3%.

Therefore, I= P*r*t

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FV= $7,000+$840

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FV=$7,000(1+0.25)∧4

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The better deal would be simple interest rate of 3%

6 0
3 years ago
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