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4 years ago

For which values of x is the function f(x)= 4/x not defined?

1 answer:

7 0

$f(x)=\dfrac{4}{x}$

Answer: The function f(x) is not defined for x = 0 because <span>the denominator cannot be equal 0.<span /></span>

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Your family needs a set of 4 tires.Which of the following deals would you prefer?Explain.

dolphi86 [110]

C because its a lot cheaper and it will e more beneficial

3 0

4 years ago

Read 2 more answers

In triangle JKL, tan(b°) = 3/4 and cos(b°) =4/5. If triangle JKL is dilated by a scale factor of 1/2, what is sin(b°)?

zysi [14]

Answer:

$\sin (b^\circ)=\dfrac{3}{5}$ .

Step-by-step explanation:

It is given that,

$\tan (b^\circ)=\dfrac{3}{4}$

$\cos (b^\circ)=\dfrac{4}{5}$

If a figure is dilated, then the image is similar to the figure. It means the corresponding angles of figure and image are congruent.

So, the value of sin(b°) after dilation is equal to the value of sin(b°) before dilation.

We know that,

$\dfrac{\sin \theta}{\cos \theta}=\tan \theta$

$\dfrac{\sin (b^\circ)}{\cos (b^\circ)}=\tan (b^\circ)$

$\sin (b^\circ)=\tan (b^\circ)\times \cos (b^\circ)$

$\sin (b^\circ)=\dfrac{3}{4}\times \dfrac{4}{5}$

$\sin (b^\circ)=\dfrac{3}{5}$

Therefore, $\sin (b^\circ)=\dfrac{3}{5}$ .

5 0

4 years ago

when you multiply a number by itself then multiply that number by another number and it equals 80 what are the 2 numbers?

sasho [114]

4 and 5
(4)(4)=16 then (16)(5)=80

3 0

3 years ago

Read 2 more answers

Martin had 2 4/5 pounds of grapes left which expression shows the pounds of grapes martin has if he doubles his current account

ICE Princess25 [194]

(2)(2)+(2)(4/5)
I hope this helps you!

5 0

4 years ago

Read 2 more answers

The student council is selling cupcakes at the school play. The cost to make the cupcakes is a fixed $75 plus $0.17 per cupcak

dedylja [7]

Answer:

C = 75 + 0.17x and R = 2x

2x - (75 + 0.17x) > 0

x ≥ 41

Step-by-step explanation:

The cost to make the cupcakes is a fixed $75 plus $0.17 per cupcakes made and the selling price of each cupcake is $2.00.

Part A: Now, the equation for the cost, C, for making x cupcakes is

C = 75 + 0.17x ......... (1)

Again the equation for the revenue, R, from selling x cupcakes is

R = 2x ............ (2)

Part B: So, the inequality that could be solved to find the number of cupcakes, x, that must be made and sold to make a profit is

R - C > 0

2x - (75 + 0.17x) > 0 ......... (3)

Part C: Solving inequality (3) we get

(2 - 0.17)x > 75

⇒ x > 40.98

⇒ x ≥ 41 {Since, x can not be a fraction}

(Answer)

3 0

4 years ago