What is the ranges for f(x) = 2x + 4 when the domains are 1, 2, 3, and 10

Answers

Answer 1

Answer: The ranges would be 6, 8, 10, and 24, hope this helps!

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Donovan bought 5 1/2 kilograms of flour for $8.25 how much is the unit rate per kilogram of flour?

Answers

The unit rate is given by the total amount, divided by the number of units. In this case, the amount is 8.25 dollars, and the units are 5.5 kilograms.

So, the unit cost is given by

$(8.25)/(5.5) = 1.5$

What is the value of x? 2/3(x-6)=6

Answers

Answer: x=15

Step-by-step explanation: THIS IS THE CORRECT ANSWER

13 squared? how does it mean and what is the solution?

Answers

13 squared is 169.
It means 13 times 13. Cubed is 13 times 13 times 13.

$13$ squered it means that $=13$ to the second power
$13^(2)=13*13=169$

Which multiplication has a negative answer?A) (-1)(-1)
B) (-1)(-1)(-1)(-1)
C) (-1)(-1)(-1)(-1)(-1)
D) (-1)(-1)(-1)(0)

Answers

The correct answer is D

i'm pretty sure it's C

-1 times -1 becomes positive, and then times -1 again, it's negative, and times it again, it's positive, and THEN one more time (lol) it's -1.

Algebra II
15 points

Answers

Answer:

B. The axis of symmetry is x=1.

F. The vertex is (1, 7).

G. The y-intercept is (0, 10).

Step-by-step explanation:

A graph of the function is helpful sorting this out.

_____

For quadratic ax² +bx +c, the axis of symmetry is x=-b/(2a). Here, that is ...

x = -(-6)/(2·3)

x = 1 . . . . axis of symmetry

This is also the x-coordinate of the vertex. The y-coordinate of the vertex can be found by evaluating the expression for this value of x:

3·1² -6·1 +10 = 7

so the vertex is (1, 7).

The y-intercept is the constant, the value of the function when x=0. Here, that is 10, so the coordinates of the y-intercept are (0, 10).

What does Descartes's Rule of Signs tell you about the real roots of the polynomial? –2x3 + 3x2 – 5x – 2 = 0 a. There is one positive root and either two or zero negative roots. b. There are either two or zero positive roots, and there are either two or zero negative roots. c. There is one positive root and one negative root. d. There are either two or zero positive roots and one negative root.

Answers

the count the number of times the sign changes
that is how many positive roots there are
if you get a number that is ≥2, then count down by 2's ending at 0

sub -x for x and evaluate
count change in sign again
that is how many negative roots there are
if you get a number that is ≥2, then count down by 2's ending at 0

so

-2x^3+3x^2-5x-2=0
-,+,-,-
1 2
2 or 0 positive roots

x to -x
2x^3+3x^2+5x-2=0
+,+,+,-
1
1 negative root

2 or 0 positive roots and 1 negative root

D is answer

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