What do you need to know?

What Do You Need To Know?

Answers

Answer 1

9514 1404 393

Answer:

  A.  One

Step-by-step explanation:

Descarte's rule of signs is used to answer this question. The signs of the coefficients are ...

  + + + -

There is one sign change, hence one positive real root.


Related Questions

If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
Oy- (11
y (11)
(18)(5)
oy-
5
11
2 y = (1865

Answers

Answer:

y = 18/5(11)

Step-by-step explanation:

If y varies directly as x, this is expressed as;

y∝x

y = kx

k is the constant of proportional constant

if y = 18 and x = 5

18 = 5k

k = 18/5

to get the expression that can be used to find the value of y when x is 11

y = kx

y = 18/5(11)

This gives the required expression

A rectangular prism has a base of 7 m by 9 m and a height of 5 m. What is its volume?

Answers

Answer:

315m ^3

Step-by-step explanation:

make sure you put the exponent !!

Formula- V=w*h*l
= 7*9*5
Volume =315 will be the volume

In one company, 20% of the workers in the technical department applied for vacation at the same time. If 12 workers applied for vacation, how many tech workers are there, altogether?

Answers

Answer:

There are 60 tech workers altogether

Step-by-step explanation:

Let X be the total number of tech workers in the company

Out of X tech employees, 20 % applied for leaves

In totality, 12 tech employees are on leave

Thus,

[tex]\frac{20}{100} * X = 12[/tex]

On solving the above mathematical equation, we get -

[tex]X = \frac{12*100}{20} \\X = 60[/tex]

Hence, there are 60 tech workers altogether

Jacob did the following calculations, please explain the error if any. (2-3i)2 = (2-3i)(2-3i) = 4-6i-6i+9i2 = 9i2-12i+4

Answers

There is no error, Jacob expand the equation correctly but can go a step further knowing that i^2=-1 so they would have 4-12i+9(-1)=4-12i-9=-5-12i

Ajar contains $36.25 in dimes (10 cents) and quarters (25 cents). There are 250
coins in the jar. How many quarters are there in the jar?

Answers

Answer:

Step-by-step explanation:

The jar contains 2 types of coins dimes and quarters

the total amount is equal to 36.25 dollars

the total number of coins is 250

let  number of dimes be x and quarters be y

let us put the equation

0.10x + 0.25y = 36.25

for our convinience convert all money to cents i.e. = 3625 cents

now the equations are

10x + 25y = 3625

x     +    y   = 250

we need to solve for y i.e. number of quaters

y = 250 - x

rewrite the equation substituting y in x place

10(250 - y) +25 y = 3625

2500 - 10y +25y = 3625

15y = 1125

y = 75

so the number of quarters = 75

cross checking :

number of dimes = 250 - 75 = 175

total = 10x175 + 25x75 = 1750 + 1875 = 3625 = $36.25

Kurt recorded the amount of rainfall in each month for one
year. What was the total rainfall that year?

Answers

Answer:

Step-by-step explanation:

G

find area of triangles​

Answers

area is base x height divide by 2
12x12=144
144 divide by 2 is 77

An Experienced ice skater spins on the ice, creating a perfect circle with a diameter of 4 feet. What is the circle's radius?

Answers

Answer:

2

Step-by-step explanation:

the radius is half the diameter from the middle!

PLEASEEEEEEEEEEE HELP ME IT'S THE LAST QUESTION

Answers

Answer:

I think it's 2-3, but I'm not sure.

Step-by-step explanation:

Sorry if I get it wrong

The winner of a basketball contest is the individual who scores the highest percentage of free throws. The too three finishers are contestants A, B, and C. Contestant A made 85% of her free throws, contestant B made 0.88 of his free throws, and contestant C made 21/25 of his free throws. Graph in inequality that represents the possible percentages (in decimal form) of free throws made by the other contestants in the competition. (Assume there are no ties.)

Answers

Answer:

Step-by-step explanation:

Less than 0.84

Step-by-step explanation:

   Convert all numbers to decimals

   85% --> 0.85

   0.88 --> 0.88

   21/25 --> 0.84

Since these are the top three, the rest of the competitors are less than 0.84.

PLS HELP WILL GIVE BRAINLIEST

Answers

Answer:

3.52BA

Step-by-step explanation:

Middle School:

Find the median by arranging the data points from smallest to largest.

1, 1, 1, 3, 4, 4, 5, 6 (Take the average of the two points in the middle, 3 and 4)

7/2 = 3.5

High School:

1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4 (Take the average of the two points in the middle, 2 and 2)

4/2 = 2

Most of the points in the middle school plot are four or less.

A (High school students had more variation.)

Felipe grows tomatoes.
0
20
60
80
The box plot shows information about
the weights of Felipe's tomatoes.
40
Weight (grams)
Felipe says “at least half of my tomatoes weigh more than 50 grams each".
a) Which of the statements below describes Felipe's statement best?
A- He is correct because the Median weight is 48 grams.
B - He is wrong because the Median weight is above 50 grams.
C - He is correct because the Median weight is 56 grams.
(1)
b) Work out the range of weights of Felipe's tomatoes.
(1)
c) Work out the interquartile range of weights of Felipe's tomatoes.
(1)

Answers

Answer:

a) c

b) 62

Step-by-step explanation:

He is correct because the Median weight is 56 grams.

Option C is the correct answer.

The range of weights of Felipe's tomatoes is 62.

The interquartile range of weights of Felipe's tomatoes is 44 grams.

What is a median?

It is the middle value of the given set of numbers after arranging the given set of numbers in order.

We have,

From the box plot,

Median = 56 grams

Now,

The statement that Felipe describe is correct because the median weight of 56 grams.

The range of the weights of the tomatoes.

= Highest value - Lowest value

= 78 - 16

= 62

The interquartile range of weights of Felipe's tomatoes.

= Upper quartile - Lower quartile

= 72 - 28

= 44 grams

Thus,

Median weight = 56 grams.

Range = 62

Interquartile range = 44 grams.

Learn more about median here:

https://brainly.com/question/28060453

#SPJ2

(q – 5) 7 simplified

Answers

Answer:

7q-35

Step-by-step explanation:

30000 at 8% per year for 10 months equals to

Answers

Answer:

2000

Step-by-step explanation:

S.I=P×rate / 100×time

30000×8 / 100×5/6

=2000

A book store is having a 30% off sale, Diary of a Wimpy Kid books are now $6.30 each. What was the original price of the books?

Answers

Answer:

The original price of the books were $9.

Step-by-step explanation:

%100 - %30 = %70

%70 = 0.7

$6.30 ÷ 0.7 = $9

I NEED HELP OW RN rn please

Answers

Answer:

(4,10)

Step-by-step explanation:

Well, you just count each unit coming from the x-axis up and then do the same for the y axis going to the right. You can also see that the graph is counting by 2 if you look at the "O" coordinate

help if you can please

Answers

Answer:

a: 24 cm

b: 101 m

c: 1.46 mm

Step-by-step explanation:

Formula: d=2r

a: 12*2=24 cm

b: 50.5*2=101 m

c: 0.73*2=1.46 mm

The ratio of marbles to stones in a large pot is 6 to 7. If there are 42 marbles, then how many stones are there?

Answers

Answer:

49 stones

Step-by-step explanation:

Write the following proportion based on the given ratio of marbles (m) to stones (s), and naming the unknown number of stones to find, with the letter "X":

6 m / 7 s = 42 m / X s

cross multiply to get the unknown in the numerator:

6 * X = 42 * 7

divide both sides by 6 to isolate X entirely on the left of the equal sign

X = ( 42 * 7 ) / 6

X = 49

Therefore, there are 49 stones

the area of a circle is 49sm what is the radius​

Answers


r≈7.8 !!!!!!!!!!!!!!!

What is a benefit of writing 4 • 4 • 4 •. 4 • 4 using exponents

Answers

Answer:

you can shorten it by putting 4 to the power of 5. (put a little 5 atop the 4.)

Step-by-step explanation:

like this

help me i am not good at math

Answers

41/6 is equal to 6 5/6

7. If A = 2x + 3 and B = x^2 - 5x + 1, what is the value of A-5B?​

Answers

Answer:

[tex] \huge \boxed{ \boxed{ \tt - 5 {x}^{2} + 27 x- 2}}[/tex]

Step-by-step explanation:

to understand thisyou need to know about:algebraPEMDASgiven:A=2x+3B=x²-5x+1to find:A-5Blet's solve:

[tex] step - 1 : define[/tex]

A-5B=2x+3-5(x²-5x+1)

[tex]step - 2 : solve[/tex]

distribute -5 to the parentheses:2x+3-5x²+25x-5rewrite:-5x²+2x+25x-5+3combine like terms:-5x²+27x-2

and

we are done

PLEASE HELP ME WITH THIS QUESTION!

Answers

Answer:

C

Step-by-step explanation:

just fill in the x

ex. y=0.5x+14

     y=0.5(5)+14

     y=2.5+14

     y=16.5

     


Help plzzzzz
Fill in the table for the function
y=-2x + 10

Answers

Answer:

16, 10, 0

You plug in the x into the function

Write all the factors of S 35. Use commas to senarate them 。​

Answers

Answer:

All of the positive integers that can divide evenly into 35 (they are the factors) are:

 1, 5, 7, 35

All others, like 2, 3, 13, ... create a remainder that is not 0.

Now, you may (or soon will be) learning about the prime factors of 35 (not 1, and only divisible by itself and 1).  They are:

    5, 7

Step-by-step explanation:

Peggy is laying 60 ft from the base of a tree. The angle of elevation for her to see
the top of the tree is 50º. Use a trigonometric ratio and calculator to find the
height of the tree to the nearest tenth of a foot.

Answers

Answer:

The height of the tree is approximately 71.5 feet

Step-by-step explanation:

The given parameters are;

The angle of elevation to see the top pf the tree = 50°

The distance Peggy is laying from the base of the tree = 50 ft.

In order to answer the question using trigonometric ratio, we assume that the angle the tree makes with the ground is 90° that is the tree is perpendicular to the ground

Therefore, the line of sight to the top of the tree,  the height of the tree, and the distance from the base of the tree where Peggy is laying, forms a right triangle

Let, 's', represent the line of sight to the top of the tree, let 'h', represent the height of the tree, and let, 'd', represent the distance from the base of the tree where Peggy is laying

The third angle, θ, of the right triangle opposite 'd' is given by angle sum theorem of a triangle as follows;

θ = 180° - 90° - 50° = 40°

θ = 40°

By sine rule we have;

h/sin(50°) = d/(sin θ)

∴ h/sin(50°) = 60 ft./(sin 40°)

h = sin(50°) × 60 ft./(sin 40°) = 71.5052156 ft.

∴ The height of the tree, h ≈ 71.5 ft. by rounding to the nearest tenth

The spinner shown is divided into equal sections that each contain one number, so that the probability of spinning each number on the spinner is the same. However, there are two red sections, and therefore there are a total of two numbers (1 and 3) that appear in red sections, while each other color appears in only one section.

A spinner with 6 equal-sized sections labeled 1 through 6. Sections 1 and 3 are red. Section 2 is blue. Section 4 is orange. Section 5 is purple. Section 6 is green.
© 2017 FlipSwitch. Created using GeoGebra.


What is the value of P(x:x is a red section)?

Enter your answer as a fraction in simplest terms, using the / symbol. For example, if your answer is 4284, which reduces to 12, enter it like this: 1/2

Answers

Answer:

the answer is 2/6 im not sure but i hope its help

a)
Estimate the probability that on the next roll the score will be 4.
b)
If the dice is rolled 400 times, about how many 2s would you expect to get?​

Answers

Answer:

a) 1/10

b) 110

Step-by-step explanation:

A) we start by getting the total number of rolls

That would be;

11 + 22 + 7 + 8 + 13 + 19 = 80

The frequency of getting a 4 is 8

The probability that the next roll will be a 4 is;

8/80 = 1/10

b) Firstly, we get the probability of getting a 2

We have this as:

22/80

So for 400 rolls, the number of 2’s will be;

22/80 * 400

= 22 * 5 = 110

Sam and Jennifer are saving money for college. Sam has saved $2000 and will save $60 more each week. Jennifer has saved $2500 and will save $55 more each week.​

Answers

Answer: what the question

Step-by-step explanation:

is this a function?

Answers

Answer:

yes

Step-by-step explanation:

yes it is a function
Other Questions
Evaluate the view that developed countries are better able to manage tropical cyclones than developing countries ( HELP FAST PLEASE!!!!!!!!!) During her morning workout, Brennaugh does a circuit of sit-ups followed by burpees. She does four burpees after every 10 sit-ups she completes to make one round of her circuit. Her goal is to completes as many rounds as possible within seven minutes. Construct a table to represent this situation, showing five different ratios of burpees to sit-ups. how can i tolk to ather pepol Can somebody help me out with this page? I did the other pages but I need someone to help with this one. 41 points for proper answers. graph y = 1/2x+3identify the x intercept step by step explanation the diagram shown above illustrates the---- cycle. Why do coastal countries have a trade advantage over landlocked countries What is the net force acting on a jet that has a mass of 130,000kg and it accelerates at a rate of 6m/s as it takes off Help please look picture and match What losses and opportunities did Mexican Americans have in the Westward Expansion? Write the equation of a line parallel to and passes through the given lines x-intercept. Leave answer in slope-intercept form Rewrite in factored form. g(x)=2x^2+10x+12 wHy dO i FeEl HaPpy? Advice a friend who responds to conflict by using the strategies below on why each (strategy)is not healthy for sustaining positive relationships on Avoidance and confrontation conflict HELP MEEEE plzzz Kkkakskwkwiks Please help!Note that common contexts are listed toward the top, and less common contexts are listed toward the bottom. According to O*NET, what are common work contexts for Film and Video Editors? Check all that apply.(1) extremely bright or inadequate lighting(2) spend time sitting(3) exposed to disease or infections(4) indoors, environmentally controlled(5) face-to-face discussions(6) deal with physically aggressive people Michelle's quiz grades are 73, 75, 89, and 91. What score on her fifth quiz will make her average quiz grade at least 85? not sure how to do this can you help me ? which statement best explains why so many fossils look different from the millions of species currently living on Earth?A. The rock that makes up the fossils has broken down over timeB. Most species that have lived on Earth are now extinctC. The fossil record is filled with inaccuraciesD. Organisms are becoming simpler over time through evolution Is this non linear or linear?