The sum of 3 times a number and 5 is equal to 9.

There are five sign changes, so there are five or, counting down in pairs, three or one negative solutions. Then my answer is:There are two or zero positive solutions, and five, three, or one negative solutions.In the above example, the maximum number of positive solutions (two) and the maximum number of negative solutions (five) added up to the leading degree (seven). It will always be true that the sum of the possible numbers of positive and negative solutions will be equal to the degree of the polynomial, or two less, or four less, or....This can be helpful for checking your work. For instance, if I had come up with a maximum answer of "two" for the possible positive solutions in the above example but had come up with only, say, "four" for the possible negative solutions, then I would have known that I had made a mistake somewhere, because 2 + 4 does not equal 7, or 5, or 3, or 1

There are four, two, or zero positive roots, and zero negative roots.

Descartes' Rule of Signs can be useful for helping you figure out (if you don't have a graphing calculator that can show you) where to look for the zeroes of a polynomial. For instance, suppose the Rational Roots Test gives you a long list of potential zeroes, you've found one negative zero, and the Rule of Signs says that there is at most one negative root. Then you know that you've found every possible negative root (rational or otherwise), so you should now start looking at potential positive roots.Similarly, if you've found, say, two positive solutions, and the Rule of Signs says that you should have, say, five or three or one positive solutions, then you know that, since you've found two, there is at least one more (to take you up to three), and maybe three more (to take you up to five), so you should keep looking for a positive solution.

Answer:

I believe it’s 96

Step-by-step explanation:

Hope I helped a little

Answer:

3x + 6 + 4x + 2 = 7x+8

Step-by-step explanation:

Answer:

x=44

Step-by-step explanation:

alright to make this easy we have to find out all of the angles values. If you see those little lines, then they are indicating that the opposite angles are similar. so angles b and d are equal to 34. in order for a triangle to be true all of the angles added up have to equal 180 so to find the last angle we do 180 -34 -34 which equals 112. That is the angle of c on the bottom triangle. The angle next to is is suplementary meaning that those two angles added together will equal 180. If one angle is 112 we just subtract 112 from 180 to get the other angle which is 68. Once again we have the two little lines indicating that the two angles are the same. Again we do 180 - 68 - 68 which is 44. Therefore x =44

Answer:

-x^2+2

Step-by-step explanation:

Got this on the test

Answer:

1) y = 3/2

2) y = -5/3

Step-by-step explanation:

If x = 2/3, y = 3/2

If x = -3/5, y = -5/3

Answer:

I think personification

Step-by-step explanation:

Answer:

19657

Step-by-step explanation:

By PEMDAS, we know we have to calculate the exponents first, then multiply the 2, and then subtract the 7³

2*10⁴ = 20000

20000 - 7³ = 19657

Answer:

Angle Bisector.

Step-by-step explanation:

Okay.

SU is the line across the triangle.

It isn't perpendicular because it will meet the lines eventually.

Median is a number.

I believe It's the Angle Bisector, but i'm going off of a gut feeling.

Answer:

-[tex] \frac{1}{ \sqrt{3x^{2} } } [/tex]

Hope this helps give brainlist

Answer:

The selling price of the goods is #340.00

Step-by-step explanation:

Given;

original price, P = #850.00

the new cost = 2/ 5 of the original price

The selling price of the goods is calculated as follows;

[tex]= \frac{2}{5} \ \times \#850\\\\ = \# 340[/tex]

Therefore, the selling price of the goods is #340.00

Answer: here you go!

Step-by-step explanation: hope this helps!

Answer:

1.584

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

A heptagon is a polygon with 7 triangles. (a)

Thus, The area (A) will be = 7a

[tex]The \ area \ of \ \ triangle \ = (1/2) \times b \times h[/tex]

where;

b = base

h = height

So;

[tex]7a = \dfrac{1}{2}(bh)[/tex]

where;

b = 22.15 unit and h = 23 unit

∴

[tex]A = \dfrac{7 \times b \times h}{2} \\ \\ A = \dfrac{7 \times 22.15 \times 23}{2} \\ \\ A = 1783.07 \ sq. units \\ \\ A \simeq 1783 \ sq. units \\ \\[/tex]

Answer:

1783

Step-by-step explanation:

Answer:

19,500,000 hope it helps.

Step-by-step explanation:

Answer:

y= 35

Step-by-step explanation:

y directly proportional to x

where x= 2, y= 10

y=kx

10= k× 2

k= 10/2

k= 5

to find y when x is 7

y = kx

y = 5× 7

y= 35

Answer:

3.92$

Step-by-step explanation:

Answer:

the tax is 3.92

Step-by-step explanation:

the total is: 94.08

Step-by-step explanation:

There isnt even a graph shown to graph on lol

Answer:

$12,75

Step-by-step explanation:

9+4+2=15

15/100=0,15

100-15=85

85*0,15=12,75

Answer :

9+4+2+15% tip= $17.25 total      

but the tip is $2.25

Step-by-step explanation:

Answer:

y=3/4x-2

Step-by-step explanation:

Answer:

c=12

Step-by-step explanation:

Answer:

Where is the question? im happy to answer.

Step-by-step explanation:

Based on the information given, the survey results are most at risk for undercoverage.

In this case, the right sample of the students to be collected should have been the high school students. Every student ought to have an equal chance of being picked.

Selection of those that are involved in extracurricular activities shows bias. Therefore, this will bring about an undercoverage.

In conclusion, the correct option is B.

Read more on:

https://brainly.com/question/23420972

Answer:

Blue

Step-by-step explanation:

I used a graphing calculator called Desmos.

Answer:

7x−19 .    9(x−3)

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

It doesn't follow the rise over run rule