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Dovator [93]
3 years ago
14

If given f(x)=2x+5 what is f(4)

Mathematics
2 answers:
slega [8]3 years ago
4 0

Answer: 13

Step-by-step explanation:

Plug 4 into the position of x in your equation and solve.

Elodia [21]3 years ago
3 0

Answer:

13

Step-by-step explanation:

f(4) means you plug in 4 for x so 2(4) + 5 = 8 +5 = 13

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No, the opposite would be negative 6/4

Step-by-step explanation:

3/2 is just a simplified version of 6/4

7 0
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Rotation 180° counterclockwise about the origin

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Two equations are shown:
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3 years ago
Biologists have found that the number of chirps some crickets make per minute is related to temperature. the relationship is ver
aalyn [17]

Answer:

It is 74.24 degrees Fahrenheit when the crickets are chirping 150 times a minute.

Variables x = Chirps and  y = Degrees

y-intercept = 38.24

slope = 0.24

Step-by-step explanation:

As the chirps are 124 times per minute for 68 degrees Fahrenheit we will consider it in (x_1,y_1) = (124,68).

Now when the chirps are 172 times and temperature is 80 degrees we consider it (x_2,y_2) = (172,80).

To find the slope we can use point-slope formula.

Where m is the slope and m=\frac{y_2-y_1}{x_2-x_1} =\frac{80-68}{172-124}= 0.24

To find y-intercept we will plug out the value of slope in y=m(x)+b choosing point (x_1,y_1) = (124,68).

So b=y-m(x) =68-124(0.24) =68-29.76=38.24

And the equation is y=0.24(x)+b

To calculate temperature for 150 chirpings we have to plug x=150 and b=38.24 in our above equation which is in form of y=m(x)+b

y=0.24(x)+b

y=0.24(150)+38.24=74.24\approx 75 degrees Fahrenheit.

Finally we have :

Temperature 74.24 degrees Fahrenheit.

With variables x = Chirps and  y = Degrees

y-intercept = 38.24 and

slope = 0.24

6 0
3 years ago
Triangles FEG and FDH are similar. If segment DH is 28 units, what is the measure of segment EG?
postnew [5]

Answer:

28 units

Step-by-step explanation:

Because of triangles FEG and FDH are similar, so DH=EG. Or you can't find out the answer. ;)

6 0
3 years ago
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