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Rom4ik [11]
3 years ago
7

PLEASE HELP ME I NEED TO PASS THIS

Mathematics
1 answer:
cestrela7 [59]3 years ago
4 0

Answer:

hey mate B is ur answer hope it will help u

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Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?
AysviL [449]

Answer:

y = 14

Step-by-step explanation:

y ∝ \frac{1}{x}

=> y = \frac{k}{x}     -------------(1)

<em><u>Where k is the constant of proportionality</u></em>

Now,

x = 7, y = 4

<em>Putting in (1)</em>

4 = \frac{k}{7}

So,

=> k = 28

Now y = ? when x = 2

<em>Putting x and k in (i)</em>

y = \frac{28}{2}

y = 14

3 0
3 years ago
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Pleaseee help I will give you all my points
suter [353]

Answer:

Ruben??

Step-by-step explanation:

Just a guess, If another person answers Listen to them

4 0
2 years ago
Tylond puts $5,000 into a savings account that earns 4% simple interest. How much interest does he earn after
Softa [21]

Answer:

5,6241

Step-by-step explanation:

I have no idea if this is correct but I hope it is. I hope this helps.

4 0
3 years ago
Graph the function f(x)=(x+1)(x-2)
creativ13 [48]
F(x) = (x + 1)(x - 2)
f(x) = x(x - 2) + 1(x - 2)
f(x) = x(x) - x(2) + 1(x) - 1(2)
f(x) = x² - 2x + x - 2
f(x) = x² - x - 2

6 0
3 years ago
A baby bird jumps from a tree branch and flutters to the ground. The function "f" models the bird's height (in meters) above the
AURORKA [14]

The answer to this question will depend on the function f itself. Basically you will find the height in meters above the ground of the bird when it jumped when the time t=0s. This is substsitute every t in the function for a value of zero and that way you will get the bird's height at the time it jumped. If you were given a graph for this function, you can find the y-intercept of the graph and that will be the answer as well. The question could be written like this:

A baby bird jumps from a tree branch and flutters to the ground. The function "f(t)-4.9t^{2}+25" models the bird's height (in meters) above the ground as a function of time (in seconds) after jumping. What is bird's height above the ground when it jumped.

Answer:

25m

Step-by-step explanation:

Once your function is given, you can substitute t=0 since 0s is the time measured at the moment the bird jumped. So our function will be:

f(0)=-4.9(0)^2+25

f(0)=25m

So the height of the bird above the ground when it jumped is 25m in this particular function.

8 0
3 years ago
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