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3 years ago

If f(x)=x+4 and g(x)=2x-3, find (g-f)(2)

Mathematics

2 answers:

nalin [4]3 years ago

6 0

F(x) = x + 4
g(x) = 2x - 3
(g - f)(2) = (2x - 3) - (x + 4)
(g - f)(2) = (2x - x) + (-3 - 4)
(g - f)(2) = x - 7

iragen [17]3 years ago

6 0

F(x)= x+4
g(x)= 2x-3

(g-x)(x) = [2x-3] -[x+4]
= 2x-x-3-4
= x-7

(g-x)(2)= (2)-7
= -5

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3 years ago

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Answer:

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3 years ago

Complete the statement by typing the letter of the angle. m∠ =54º

tekilochka [14]

Answer:

x = 16

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Step-by-step explanation:

Make a equation of all of the angles added together is equal to 180 since the angles of a triangle added together is 180

(4x-10)+(2x+7)+(7x-25)=180

combine like terms

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plug in x to find the measure of the angle

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3 years ago

Read 2 more answers

A lab is testing the amount of a certain active chemical compound in a particular drug that has been recently developed. The man

Mazyrski [523]

Answer:

The 95% confidence interval is "87.94, 91.86".

Step-by-step explanation:

The given values are:

Sample batches,

n = 25

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$\bar{x}$ = 89.9 mg

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σ = 5

α = 0.05

The critical value from Z table will be:

= $Z(\frac{\alpha}{2} )$

= $Z(\frac{0.05}{2} )$

= $1.96$

Now,

The confidence interval will be:

= $\bar{x} \pm Z(\frac{\alpha}{2} )\times \frac{\sigma}{\sqrt{n} }$

On substituting the values, we get

= $89.9 \pm Z(\frac{0.05}{2})\times \frac{5}{\sqrt{25}}$

= $89.9 \pm Z(\frac{0.05}{2})\times \frac{5}{5}$

= $89.9 \pm1.96\times 1$

Lower limit will be:

= $89.9 -1.96\times 1$

= $87.94$

Upper limit will be:

= $89.9 +1.96\times 1$

= $91.86$

7 0

3 years ago