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2 years ago

If y varies directly with x, and y is 14 when x is 2, what is the value of x when y is 35?

Mathematics

2 answers:

Leno4ka [110]2 years ago

6 0

The answer to this question is 5

Ainat [17]2 years ago

4 0

Im pretty sure it's 17.5 since 35 is odd.

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If XY=18, YZ=14, and XZ=20, find the radius of each circle.

Pachacha [2.7K]

Let`s assume that points M, N and P are the touching points of those 3 circles:Then:Y M + M Z = 14,Z N + N X = 20X P + P Y = 18And also: M Z = ZN, Y M = P Y and N X = X P.Now we have a system of 3 equations ( Y M, M Z and X P are the radii of each circle ):Y M + M Z = 14M Z + X P = 20X P + Y M = 18 Y M - M Z = - 14+X P + Y M = 18 X P - M Z = 4Y M - M Z = - 14+M Z + X P = 20 X P - Y M = 6 /* ( - 1 )X P - M Z = 4 X P + Y M = - 6 X P - M Z = 4 Y M - M Z = - 2 Y M + M Z = 14 2 Y M = 12 => Y M = 6M Z - 6 = 2 => M Z = 8X P + 6 = 18
X P = 12
Radii of the circles are: 12, 8 and 6.

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3 years ago

A phone company charges $0.45 for the first minute and $0.35 for each additional minute for a long distance call. Which numerica

Vinvika [58]

0.45+19(0.35)

Total cost $7.10 (0.45+6.65)

8 0

3 years ago

Read 2 more answers

If f(x) = x^3 – 2x^2, which expression is equivalent to f(i)?

MrRissso [65]

Answer:

2 - i

Step-by-step explanation:

If i in the expression f(i) is an imaginary number, then

f(i) = i^3 - 2 i^2 = -i - 2*(-1) = 2 - i

5 0

3 years ago

Please help thanks<br> Xxxx

pentagon [3]

Answer:

Step-by-step explanation:

Examples of a direct variation is y=kx and k=y over x

3 0

3 years ago

If the straight-line distance from her home to the university is 10. 3 km in a direction 25. 0° south of east, what was her aver

DIA [1.3K]

The average velocity in km/h is: 34.3km/hr

<h3>What is average velocity?</h3>

Average velocity refers to speed at which the time intervals (t) change in position or displacement happens, divided by the change in position or displacement (x).

=> Average velocity = $\frac{displacement}{time}$

Now,

The time taken is missing in the question; the time taken = 18 mins = $\frac{18}{60}$ hours.

The distance of her home to the university = 10.3 km

As, average velocity = $\frac{displacement}{time}$

=> Velocity = $\frac{10.3\times60}{18}$ = 34.3 km/hr

Hence, the average velocity = 34.3 km/hr

To learn more about average velocity, refer to the link: brainly.com/question/6504879

#SPJ4

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1 year ago