Mathematics College

which of these relations are functions?​

Which Of These Relations Are Functions?

Answers

Answer 1

Answer:

the fourth box (parabola)

Step-by-step explanation:

yeah

Related Questions

13/3 = 26/c help ASAP PLZ!!!!!!!!!!!!!

Answers

C=6
13 is half of 26
All you’re doing is basically adding 13+13 together which is 26 and then 3 plus 3 which is 6

Darius paid 8.5% sales tax when he bought a new phone for $100. What was the total price of his new phone?
A. $108.05
B. $109
C. $105.50
D. $108.50

Answers

Answer:

To get the total amount plus sales tax you simply multiply 100 by .085 and you’d get 8.50$. So the answer is ‘D’.

Answer:

D

Step-by-step explanation:

108.5

us
Figure ABCD is a kite. Find the
value of x.
B
X + 20
X + 10
А
С
X = [?]
Enter

Answers

Answer:

x = 30

Step-by-step explanation:

Since this is a right triangle,

90 = (x + 20) + (x + 10)

90 = x + x + 20 + 10

90 = 2x + 30

90 - 30 = 2x

60 = 2x

60/2 = 2x/2

30 = x

Check:

x + 20

30 + 20 = 50

x + 10

30 + 10 = 40

50 + 40 = 90

Hope this helps!

Whats the slope and how do i / where do i graph it

Answers

Slope (y2-y1)/(x2-x1)
Pick any random points
(1,0) and (0,3)
(3-0)/(0-1) = 3/-1 = -3
The slope is -3
It is already graphed?

Answer:

The slope is 3. graph it every time the line hits an exact point

Step-by-step explanation:

for f(x) =4x-1 and g(x) = x2 - 5, find (f-g)(x)

Answers

Answer:

(f - g)(x) = -x² + 4x + 4

General Formulas and Concepts:

Pre-Algebra

Properties

Algebra I

Combining like termsFunction notation

Step-by-step explanation:

Step 1: Define

f(x) = 4x - 1

g(x) = x² - 5

(f - g)(x) = f(x) - g(x)

Step 2: Find

Substitute:                    (f - g)(x) = 4x - 1 - (x² - 5)Distribute:                     (f - g)(x) = 4x - 1 - x² + 5Combine like terms:    (f - g)(x) = -x² + 4x + 4
(4x -1)-(2x-5)
4x -1 -2x +5
2x +4

Please help with the problem in the picture ^ I’ll give brainliest if you give me a small explanation! :)

Answers

Answer: B

Step-by-step explanation: if 24 to 16 is 3:2 then because this is directly proportional it would be that x is 6:4

any help will be helpful and you have to make ur own graph paper if you don't have none he said but please help I don't understand

Answers

Step-by-step explanation:

do you need graph paper?

just minus the 2nd cordnates x to the 1dt cordnates x and same for the y. that will give you the distance for each x and y points

Ann bought a hat for $16.20, a discount of 30% off. She paid 8% for tax how much was the total?

Answers

Answer:

werwrweqetrweqtwqw3qty

Step-by-step explanation:

eryeqyqeweyewywewerye

The ratio of boys to girls in a homeroom at Twin Rivers Middle School is 3:2

If there are 12 boys, how many girls are there in the homeroom?

Answers

Answer:

There are 8 girls in the homeroom

Please help me please

Answers

Answer:

it is A and C

Step-by-step explanation:

If you do the math and equations of all of these, you will find that:

10 is 2.5x bigger than 4 (Side lengths DE and BA)

and if we do the equation:

x · 2.5

(the x variable stands for the different side lengths of triangle ABC)

it will equal the side lengths of the bigger triangle.

and when I finished doing that, I multiplied all of the answers to find the area:

12.5 x 7.5 x 10 which altogether is 937.5

none of the other answers for the total of the triangle add up to be that, but side length EF is 7.5, which I used to get my total answer of 937.5.

So the answer is A and C

PLEASE HELP PLEASE
question: Your mass on earth is 50 kilograms. What is your mass on the moon?

Answers

Answer:

No matter if you are on Earth, the moon or just chilling in space, your mass does not change. But your weight depends on the gravity force; you would weigh less on the moon than on Earth, and in space you would weigh almost nothing at all. Where ever you are, your mass will always stay the same.

Answer:

50 kilograms

Step-by-step explanation:

Mass never changes, and is constant everywhere. The weight is what changes. If you weigh 50 kg on Earth, you'll weigh 50 kg everywhere else in the universe. That's because the amount of matter in you cannot change.

An art teacher buys 4 packs of oil paints. Each pack contains 18 tubes of paint. Which equations represent the total
number of tubes of paint the teacher bought? Check all that apply.
4x 18 = 72
18 + 18 + 18 + 18 = 72
22-4 = 18
18 + 4 = 22
72 - 18 = 4
I’m

Answers

Answer: it’s answer 18+18+18+18

Step-by-step explanation:it’s basically18 times 4

Answer:

4 × 18 = 72

18 + 18 + 18 + 18 = 72

72 ÷ 18 = 4

Step-by-step explanation:

plesase solve this

Prove that a line parallel to one side of a triangle divides the other two sides proportionally. Be sure to create and name the appropriate geometric figures. (10 points)

Answers

Diagram:-

Required Answer:-

Tools Needed:

pencil, paper, ruler

Draw:-[tex]\begin{align*}\triangle ABC\end{align*}.[/tex] Label the vertices.

[tex]\begin{align*}\overline{XY}\end{align*} so that \begin{align*}X\end{align*} is on \begin{align*}\overline{AB}\end{align*} and \begin{align*}Y\end{align*} is on \begin{align*}\overline{BC}\end{align*}. \begin{align*}X\end{align*} and \begin{align*}Y\end{align*}[/tex] can be anywhere on these sides.

Is [tex]\begin{align*}\triangle XBY \sim \triangle ABC\end{align*}? Why or why not? Measure \begin{align*}AX, XB, BY,\end{align*} and \begin{align*}YC\end{align*}. Then set up the ratios \begin{align*}\frac{AX}{XB}\end{align*} and \begin{align*}\frac{YC}{YB}\end{align*}.[/tex] Are they equal?

Draw:-

a second triangle,[tex] \begin{align*}\triangle DEF\end{align*}.[/tex] Label the vertices

Draw:-

[tex]\begin{align*}\overline{XY}\end{align*} so that \begin{align*}X\end{align*} is on \begin{align*}\overline{DE}\end{align*} and \begin{align*}Y\end{align*} is on \begin{align*}\overline{EF}\end{align*} AND \begin{align*}\overline{XY} \ || \ \overline{DF}\end{align*}.

Is \begin{align*}\triangle XEY \sim \triangle DEF\end{align*}? Why or why not? Measure \begin{align*}DX, XE, EY,\end{align*} and \begin{align*}YF\end{align*}. Then set up the ratios \begin{align*}\frac{DX}{XE}\end{align*} and \begin{align*}\frac{FY}{YE}\end{align*}.[/tex] Are they equal?

From this investigation, it is clear that if the line segments are parallel, then [tex]\begin{align*}\overline{XY}\end{align*}[/tex] divides the sides proportionally.

Graph this line using the slope and y-intercept:
y = x + 2
Click to select points on the graph.

Answers

Answer:

points-

(0,2)

(5,3)

(10,4)

I hope this is good enough:

Answer:

Step-by-step explanation:

points-

(0,2)

(5,3)

(10,4)

The chart below shows the numbers of endagered and threatened species both here in the United States and abroad

Endangered Threatened
United States Foreign United States Foreign
Mammals 68 251 10 20
Birds 77 175 13 6
Reptiles 17 67 22 19
Anphibians 11 8 10 1

Find the probability that it is:

a. Threatened and in the United States
b. An endangered foreign bird
c. A mammal or a threatened foreign species

Answers

Answer:

a. 0.071

b. 0.226

C. 0.4849

Step-by-step explanation:

We add up all endangered and foreign species to get 775

A.

Probability of threatened in united States.

= 10+13+22+10 = 55 divided by total species

= 55/775

= 0.070967

= 0.071

B

An endangered foreign bird

Total number of foreign birds = 175

Probability = 175/775

= 0.2258

= 0.226

C.

Please check attachment for the calculation of answer part c.

Thank you!

A preschool class has 9 girls and 11 boys in
the class. What percent of the class are
girls?

Answers

Answer:

45%

Step-by-step explanation:

Add 9 and 11 to see how many students there are in all. The answer to this is 20.Divide 9 by 20. You get .45, which is equal to 45%.

Determine the value of y, if x = -3.
y = |x + |1|

Answers

Answer:

Step-by-step explanation:

, if x = -3.

y = |x + |1|

So value of Y is

Y=|-3|+|1|

Y=3+1

Y=4

Answer is 4

Answer:

[tex]y = 4[/tex]

Step-by-step explanation:

[tex]y = |x + |1|\\[/tex]

| | = absolute value (how far it is from 0)

[tex]y = |-3 + |1|\\\\\\|-3| =3\\\\|3 +1| =3 + 1 \\3 + 1= 4\\[/tex]

[tex]\LARGE\boxed {y = 4}[/tex]

Let me know if you have any other questions or concerns!

~[tex]InLoveWithPugs[/tex]

[tex]Moderator\\Math\ Enthusiast[/tex]

why is earth known as diatomaceous Earth​???
From biology

Answers

Answer:

Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons are made of a natural substance called silica. Over a long period of time, diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. Today, silica deposits are mined from these areas.

If x is the principal square root of 7, what must be true.

A. x = 7², and x is negative

B. x² = 7, and x is positive

C. x = 7², and x is positive

D. x² = 7, and x is negative ​

Answers

Answer:

B

Step-by-step explanation:

x=√7

squaring

x²=7

Write the equation of the line that passes through the point (-2, 7) and is PARALLEL to the line y = -4x + 1.​

Answers

Answer:

The equation is [tex]y=x-9[/tex]

Step-by-step explanation:

If we want a line parallel to the line in the problem it will have the same slope. The equation given in the problem is already in slope intercept form so we can take the slope for the new equation directly from this equation.

The slope-intercept form of a linear equation is:  [tex]y=mx+b[/tex]

Where  m  is the slope and  b  is the y-intercept value.  

[tex]y=1x-2[/tex]

Therefore the slope is  

[tex]m=1[/tex]

We can now use the point-slope formula to write the equation of the parallel line:

The point-slope formula states:  

[tex](y-y1)=m(x-x1)[/tex]

Where  m  is the slope and  [tex](x1,y1)[/tex] is a point the line passes through.  

Substituting the information from the problem gives:

[tex](y- (-7)=1(x-2)[/tex]

[tex](y+7)=1(x-2)[/tex]

Or, we can solve for  y  to put the equation in slope-intercept form:

[tex]y+7=x-2[/tex]

[tex]y+7-7=x-2-7[/tex]

[tex]y+0=x-9[/tex]

[tex]y=x-9[/tex]

Graph the line with slope -6 and y-intercept 3.

Answers

Answer:

See Attachment.

Genera Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define variables

Slope m = -6

y-intercept b = 3

Step 2: Write linear equation

Substitute into general form.

Slope-Intercept Form:   y = -6x + 3

Step 3: Graph

Answer:

*See Below*

Step-by-step explanation:

It was hard to find this answer. Sorry if the graph glitches.

Keith wants to plot -8 and -9 and on a number line. Which statement is true? *

Answers

Where the statements at lol

HELP ME PLSS!!!
The coordinate points below show part of data collected by a computer company interested in how fast people type as they get older, where x is age in years and y is typing speed in words per minute.
(5, 12), (13, 25), (12, 22), (18, 45), (15, 39), (15, 32), (16, 33), (17, 40), (7, 17)
If this data was plotted on a scatterplot, would there be a relationship between the variables? If yes, explain the relationship.

Answers

Answer:

I think that it is no.

Step-by-step explanation:

Becasue 15, 39 is more than the 16, 33

Find the value of y-8 when y = 15.

Answers

Answer: y=3

Step-by-step explanation:

the initial statement is

y

∝

1

x

to convert to an equation multiply by k the constant

of variation

⇒

y

=

k

×

1

x

=

k

x

to find k use the given condition

y

=

15

when

x

=

5

y=kx⇒k=y x=15×5=75

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

∣

∣

∣22y=75x22∣∣

when x=25 then

y=75 25=3

Step-by-step explanation:

I hope understand this

What number group is 45/5 in

Answers

Answer:

Its in rational

Step-by-step explanation:

Answer:

45/5 is a rational number

Step-by-step explanation:

45/5 is equal to 9.

9 is a rational number.

The drama club has 14 members. They need to raise $952.00 to attend a play at the Fox Theater. They already have $126 in their account. What is the least amount of money each student needs to raise in order to go to the play?

A. m ≥ 59
B. m ≥ 60
C. m ≥ 64
D. m ≥ 68
PLEASE HELP FAST!!!!!

Answers

Answer:

A. m ≥ 59

Step-by-step explanation:

Use the inequality 24 ≥ 58 + 5(x - 3.8)
Solve for the inequality X.
Pls help I need to hand it in by 4:00..

Answers

Answer:

Work shown below!

Step-by-step explanation:

24 ≥ 58 + 5(x - 3.8)

Distribute;

24 ≥ 58 + 5x - 19

Collect like terms;

24 ≥ 39 + 5x

Subtract 39 from both sides;

-15 ≥ 5x

Divide both sides by 5;

x ≥ -3

What is 55/99 Rounded to the nearest half

Answers

Answer:  1/2

Step-by-step explanation:

Answer: 1/2 is your answer:)

Step-by-step explanation: 50 rounded to the nearest tenth is 50

99 rounded to the nearest tenth is 100 and

50 is half of 100:)

A tank initially contains 130 gallons of water. It is then filled with more water, at a constant rate of 8 gallons per minutes. Write an equation that represents how much water is in the tank after m minutes.

Answers

Answer: 130+8(m)

Step-by-step explanation: you want to add how much water times m is added to your very first amount

A die is rolled twice. Find the chance that the ace (single dot) comes up on one of the two rolls, but not both. Record your answer as a percentage rounded to the nearest tenth of a percent.

Answers

Answer:

13.9%

Step-by-step explanation:

In order to calculate the probability of this happening, we would need to multiply the probability of one of the rolles being an ace with the probability of one of the roles NOT being an ace. Since the probability of rolling an ace is 1/6 (since there is only one ace in a six-sided die) then the probability of NOT rolling an ace is 5/6

[tex]\frac{1}{6} * \frac{5}{6} = \frac{5}{36}[/tex] or 0.1388     multiply by 100 to get percentage value

0.1388 * 100 = 13.9%

Therefore, the probability of getting one ace and one non-ace roll is 13.9%

Other Questions
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