All categories

4 years ago

What is the value of 3c-4d when c=5 and d=1/2

Mathematics

1 answer:

lions [1.4K]4 years ago

4 0

3c — 4d
= 3(5) — 4(½)
= 15 — 2
= 13

You might be interested in

1. Determine the y-intercept of the graph below. *

geniusboy [140]

Answer:

theres no graph?

Step-by-step explanation:

4 0

3 years ago

PLEASE HELP ASAP I need help finding the rate of change

Talja [164]

G(6)-g(2)/6-2
g(6) = 50
g(2) = 14
50-14/6-2
36/4
=9

6 0

3 years ago

Which statement describes if there is an extraneous solution to the equation √x-3 = x-5? A. there are no solutions to the equati

Brrunno [24]

Remember that an extraneous solution of an equation, is the solution that emerges from solving the equation but is not a valid solution.

Lets solve our equation to find out what is the extraneous solution:
 $\sqrt{x-3} =x-5$
$(\sqrt{x-3})^2 =(x-5)^2$
$x-3=x^2-10x+25$
$x^2-11x+28=0$
$(x-4)(x-7)=0$
$x-4=0$ and $x-7=0$
$x=4$ and $x=7$

So, the solutions of our equation are $x=4$ and $x=7$ . Lets replace each solution in our original equation to check if they are valid solutions:
- For $x=7$
$\sqrt{x-3} =x-5$
$\sqrt{7-3} =7-5$
$\sqrt{4} =2$
$2=2$
We can conclude that 7 is a valid solution of the equation.

- For $x=4$
$\sqrt{x-3} =x-5$
$\sqrt{4-3} =4-5$
$\sqrt{1} =1$
$1 \neq 1$
We can conclude that 4 is not a valid solution of the equation; therefore, 4 is a extraneous solution.

We can conclude that the correct answer is: D. the extraneous solution is x = 4

7 0

3 years ago

The graph shows the amount of money paid when purchasing bags of peanuts at the zoo:

I am Lyosha [343]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Explain how to use the vertex and the value of “A” to determine the range of an absolute value function. PLEASE HELP!!

Thepotemich [5.8K]

Answer:

First, a absolute value function is something like:

y = f(x) = IxI

remember how this work:

if x ≥ 0, IxI = x

if x ≤ 0, IxI = -x

Notice that I0I = 0.

And the range of this function is all the possible values of y.

For example for the parent function IxI, the range will be all the positive reals and the zero.

First, if A is the value of the vertex of the absolute function, then we know that A is the maximum or the minimum value of the function.

Now, if the arms of the graph open up, then we know that A is the minimum of the function, and the range will be:

y ≥ A

Or all the real values equal to or larger than A.

if the arms of the graph open downwards, then A is the maximum of the function, and we have that the range is:

y ≤ A

Or "All the real values equal to or smaller than A"

5 0

4 years ago