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yuradex [85]
3 years ago
13

Solve y=f(x) for x . f(x)=23x+4 x= Question 2 Find the input when the output is 2. The input is .

Mathematics
1 answer:
Fantom [35]3 years ago
4 0

Let's find f(x) = 2, which is essentially what the problem is asking, what x corresponds to an output of 2.


Let's solve below:

f(x) = 2

  • Setting up what we know

23x + 4 = 2

  • Substituting in 23x + 4 for f(x) (I'm not sure if this is the correct expression for f(x) due to formatting issues)

23x = -2

  • Subtract 4 from both sides to make a step to isolate x (what we are trying to find)

x = - \frac{2}{23}

  • Divide both sides of the equation by 23 to isolate x

Thus the input is \boxed{x = - \frac{2}{23}}.

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Can someone please solve these?
JulijaS [17]

Answer:

Step-by-step explanation:

h = -6t^{2} +20t + 4

I will use calculus,  maybe that's not how you're supposed to do this

-12t +20 =0

12t = 20

t = 20 /12

t = 1 \frac{8}{12}

t = 1 \frac{2}{3}

there will be a max at  1.6666666666  seconds

-6*1.6666666666666^{2}  + 20 * 1.6666666666  +4

= 16.666666666666 + 33.333333333333 + 4

= - 16\frac{2}{3} + 33 \frac{1}{3} + 4

= 20\frac{2}{3}  feet max height ( not too high,  for a rocket)

time of flight:

0 = -6t^{2} +20t + 4

use quadratic formula to find t

-20 +- sqrt [ 20^{2} - 4*(-6)*4 ] / 2*(-6)

-20 +- sqrt [400 + 96 ] / -12

-20 +- sqrt [496 ] / -12

-20 +- 22.27105 / -12

try the negative option 1st

-42.27105 / -12

3.522 seconds.     time of flight

when will the rocket be at 12' ? :

12 = -6t^{2} +20t + 4

0 = -6t^{2} +20t -8

use quadratic formula again to find t

-20 +- sqrt [ 20^{2} - 4*(-6)*(-8) ] / 2*(-6)

-20 +- sqrt [ 400 - 192 ] / -12

-20 +- sqrt [208 ] / -12

-20 - 14.4222 / -12

-34.4222 / -12

2.8685 seconds ( on the way down)

and

-20 + 14.4222 / -12

-5.578 / - 12

0.4648  seconds ( on the way up )

6 0
3 years ago
Is this correct??????
garik1379 [7]

waittttttttttttt plzzzzzzz

6 0
3 years ago
Hello,..... I will mark you as a brainliest
madam [21]

Answer:

5 jumps

Step-by-step explanation:

Personally I would write it out, although there surely is a formula for it.

3 fall to 2 - 5 fall to 4 - 7 fall to 6 - 10 fall to 9 - 12.

This makes 5 jumps, since once he is out he won't fall back in.

8 0
3 years ago
One state leads the country in tart cherry​ production, producing 80 out of every 100 tart cherries each year. a. What percent o
Dafna1 [17]
So, to turn this into a percentage, we have to turn this into a decimal by dividing:
80/100 = 0.80
80% of tart cherries are produced in this state.
3 0
3 years ago
The graphs of two rational functions of f and g are shown. One of them is given by the expression 2-3x/x. Which graph is it? Tha
Nesterboy [21]

Answer:

It's the left graph, y = f(x)

Step-by-step explanation:

If you find the x-intercepts, you'd solve (2-3x)/x = 0. This means you'd really solve 2-3x=0, which gives you x=3/2.

So the graph must have an x-intercept at (1.5, 0). Only f(x) has that.

8 0
3 years ago
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