Quadratic applications??

Answer:

21 + 5

Step-by-step explanation:

A negate minus a negative equals a positive

Answer:

(-5)-21

Step-by-step explanation:

use the cummutitive property to make a new equation out of the original one to get (-5)-21

Answer:

32

Step-by-step explanation:

4 times 2 is 8, - -7 is 15 plus 17 is 32

Answer:

-6/10  or  -0.6

Step-by-step explanation:

m=y2-y1/x2-x1

-3-3=(-6)

5-(-5)=10

-6/10

hope this helps :3

if it did pls mark brainliest

Answer:

72

Step-by-step explanation:

24 / 3 = 8

so

8*7 = 72

Answer:

72

Step-by-step explanation

24 / 3 = 8

so

8*7 = 72

Answer:

The cyclists will meet after 9 hours.

Step-by-step explanation:

Let t be the time the cyclists need to meet.

16t + 22t = 342

38t = 342

t = 9

Answer:

Step-by-step explanation:

4/9-1/6=5/18

Step-by-step explanation:

[tex] \frac{4}{9} - \frac{1}{6} [/tex]

[tex] (\frac{4}{9} \times \frac{2}{2} ) - ( \frac{1}{6} \times \frac{3}{3} )[/tex]

[tex] \frac{8}{18} - \frac{3}{18} [/tex]

5/18

It is add five two both sides.

Answer:

Step-by-step explanation:This is two variables and two equations. x and y will be the two different numbers.

1.x + y =138

2.x= y-20

plug #2 into #1.

(y-20) + y = 138

2y - 20 = 138

2y = 158

y = 79 and plug into #2 and find x.

Step-by-step explanation:

x + y = 138

x = y - 20

(y - 20) + y = 138

2y - 20 = 138

2y = 158

y = 79

Answer x = 79 - 20 = 59 = x

Answer:

the value of x is 12, and the value of y is 9

Answer:

y=9

x=12

Step-by-step explanation:

this is because the top and bottom of the square are equal as well as from the sides of left to right.

Answer:

Did you forget to add an attachment?

Answer:

Step-by-step explanation:

Answer:

d. 165 calories

Step-by-step explanation:

First of all, we would find the amount of calories in 1 gram of the artificial sweetener

1 gram = 220/75

1 gram = 2.93 calories

Therefore, 484 grams has;

484 * 2.93 = 165.2

Approximately, this is equal to 165 calories.

Method 2

220 grams of the artificial sweetener has 75 calories.

484 grams of the artificial sweetener has x calories.

Translating the word problem into an algebraic equation, we have;

220 = 75

484 = x

Cross-multiplying, we have;

220x = 75*484

220x = 36300

x = 36300/220

x = 165 calories.

Answer:

10x + 5

A is the correct answer

Step-by-step explanation:

Answer:

I think the answer is B: Slope

Step-by-step explanation:

On a graph, proportional relationships are straight lines that extend through the origin. The relative steepness of the line is called slope; the slope of a graph is the same as the constant of proportionality of the equation.

Hope this helped, Have a Wonderful Day!!

The slope is the same as the unit rate and constant of proportionality in a slope. Then the correct option is B.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

The slope is the same as the unit rate and constant of proportionality in a slope. Then the correct option is B.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ5

Answer:

(-5, 1)

Step-by-step explanation:

(x, y)

x moves left/right

y moves up/down

x = -5

y = -5 + 6 = 1

(-5, 1)

Answer:

16 cd racks

Step-by-step explanation:

1,440%90

Answer:

This question gives out some personal info. Please be more careful on the internet.

Step-by-step explanation:

its say your grade and what state you live in.

Answer:

The area of the rectangle can be found using two different expressions: a(b + c) or ab + ac. The equality of these expressions, a(b + c) = ab + ac, is the distributive property.

Step-by-step explanation:

Hope this helped, Have a Wonderful Day!!!

Answer:

C: The American antelope

Step-by-step explanation:

Answer:hemisphere

Step-by-step explanation:

The volume of the hemisphere is greater when x = 2.

The formula for calculating the volume of a hemisphere is expressed as:

[tex]V=\frac{2}{3} \pi x^3[/tex]

Given that x = 2. Substitute x = 2 into the formula to get the volume of the hemisphere:

[tex]V=\frac{2}{3} \pi (2)^3\\V=\frac{16}{3}\pi\\V = 16.75 units ^ 3[/tex]

Next is to get the volume of a cube expressed as:

[tex]V = L^3\\Since \ L = x\\V = x^3\\V = 2^3\\V = 8 units^3[/tex]

Hence the volume of the hemisphere is greater when x = 2.

Learn more here: https://brainly.com/question/14022833

Answer:

The width is 8

Step-by-step explanation:

if the ratio of length to width is 9 to 4. and we know the length is 18, 18 is 2 times as much as 9, so 4*2=8.                   9*2=18,4*2=8

Answer:

The width of the rectangle is 8.

Step-by-step explanation:

I found this answer after taking a quiz and getting it wrong. After that I wanted to find this question on Brainly and answer it so others wouldn't get it wrong.

HOPE IT HELPS :)

Answer:

Explained below.

Step-by-step explanation:

The human resource department at a certain company wants to conduct a survey regarding worker morale. The department has an alphabetical list of all 4,502 employees at the company and wants to conduct a systematic sample of size 50.

Systematic sampling is a kind of probability sampling method in which individuals from a larger population are nominated according to a random initial point and a static, periodic interval.

(a)

A sample of size 50.

Then the value of k will be: [tex]k=\frac{4502}{50}=90.04\approx 50[/tex]

Thus, the value of k is 90.

(b)

Label the employees from 1 to 4502.

And select every 90th employee.

So, the individuals who will be administered the survey are:

90th, 180th, 270th,...

Answer:

28

Step-by-step explanation:

If 50% of students are boys that means there are 30 boys and 30 girls. Then if   30% of boys are 10 and 60% of girls are 18. You add 18+10 and that gives you 28.

Step-by-step explanation:

1+4=5

40:5=8

1*8=8

4*8=32

8:32

Answer:

The required probability for the intersection of A & B = 0.25

Step-by-step explanation:

Given that:

Sample space S =  {E1, E2, E3, E4, E5, E6, E7} and the probability of each sample points are:

P(E1) = .05, P(E2) = .20, P(E3) = .20, P(E4) = .25, P(E5) = .15, P(E6) = .10, and P(E7) = .05.

Also;

A = {E1, E4, E6}

B = {E2, E4, E7}

C = {E2, E3, E5, E7}

Then

P(A) = 0.05 + 0.25 + 0.10 = 0.4

P(B) = 0.20 + 0.25 + 0.05 = 0.5

P(C) = 0.20 + 0.20 + 0.15 + 0.05 = 0.6

The intersection of A and B are:

P(A ∩ B) = E4

P(A ∩ B) = 0.25

The required probability for the intersection of A & B = 0.25

Answer:

12.50+1.25t=c  for A

12.50+ (1.25x3)

               /\

               I

              3.75

12.50+3.75=16.25   fro B

12.50+6.25=18.75

Step-by-step explanation:

u r welcome

Answer: 242,880

Step-by-step explanation:

We know that:

We have 5 letters.

There is no repetition allowed.

The strings start with a consonant.

The strings end with the letter Y.

Ok, in our alphabet we have:

26 letters.

21 consonants

5 vowels.

Now, let's count the number of options for each one of the letters in the string.

First letter, this must be a consonant, initially, we can have 21 options, but this string must finish with an Y, and Y is a consonant, so it can not be in the first letter, then for the first letter we have 20 possible options.

Now we have a total of 26  - 1 - 1 = 24 letters left, where we subtracted the consonant for the first letter, and the Y for the last letter.

The options for the second letter will be 24.

The options for the third letter will be 23

The options for the fourth letter will be 22

For the last one we have a fixed value, so we have only one option.

The total number of combinations will be equal to the product between the numbers of options for each letter, this is:

C = 20*24*23*22 = 242,880 possible strings.