Mathematics College

Help please!! This is timed. I’ll give brainliest also!

Answers

Answer 1

Answer: Relation 1 Function Relation 2 Not a function Realtion 3 Not a function Relation 4 Not a function

Step-by-step explanation: Ok this is a right answer

Answer 2

1.is a function 2.is a function 3.not a function 4.not a function

Related Questions

twelve increased by a number

Answers

Answer:

12+# OR 12+x

Step-by-step explanation:

Increased by 12 means plus 12. The word "is" in equations is an equal sign. So far, you have 2n+12. On the other side of the equal sign, you have 31 less than 3 times a number.

At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.

A tree diagram. Random student to studies for test is 0.6, and to does not study for test is 0.4. Studies for test to Gets B or higher is 0.55; does not get B or higher is 0.45. Does not study for test to Gets B or higher is 0.20; does not get B or higher is 0.80.

The professor informs the class that there will be a test next week. What is the probability that a randomly selected student studied if they do not pass the test with a B or higher?

0.45
0.46
0.54
0.59

Answers

Answer:

.54

Step-by-step explanation:

The probability is 33%.

what is probability?

The probability is the measure of the likelihood of an event to happen.

Given:

Random student to studies for test is 0.6, and to does not study for test is 0.4.

Studies for test to Gets B or higher is 0.55; does not get B or higher is 0.45.

Does not study for test to Gets B or higher is 0.20; does not get B or higher is 0.80.

P(A) =55%

P(B)= 20%

60% of the students study.

So, the probability that a student studies, and gets B or higher is:

Probability =P(A) * 0.6

P= 55* 0.6

Probability = 33%

Hence, the probability is 33%

Learn more about probabilities here:

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#SPJ5

Can smoke please help me with this I need help I’ll give brainliest

Answers

Answer:

only one solution at x=0

Step-by-step explanation:

Pls tell me I really need help

Answers

Answer:

The answer is C or 44/12

Step-by-step explanation:

1/2 is equivalent to 3/6

1 4/6 is equivalent to 1 4/6 or 10/6

1 2/4 is equivalent to 1 3/6 or 9/6

When you add all of these together you get 22/6

Then you multiply 22/6 by 2 to get 44/12

PLEASE HELP QUICKK
Which slopes could be the slopes of perpendicular lines?

Question 1 options:

1/2 and 2

8 and -1/8

2 and 2

1 and -1

0 and undefined

Answers

The answer would be:

8 and -1/8

1 and -1

And could be 0 and undefined, but I'm not 100% sure

Shamus owes his parents $162 he pays them 60% of the $45 he earns as a soccer referee each week. how many weeks will it take shamus to pay all of the money he owes his parents?

Answers

Answer:

Step-by-step explanation:

so knnd

Answer: 24 is wrong

Step-by-step explanation:

A submarine dived 172 ft and 4 minutes find the average change in depth from the submarine each minute

Answers

Answer:

43 ft per minute

Step-by-step explanation:

divide 172 by 4 to get the feet per 1 minute

Question 13 (1 point)
A jug contains 74.1 ounces of fruit punch. If the punch is evenly distributed to six people, how
many ounces will each person get?
oz.
Blank 1:

Answers

Answer:

each person gets 12.35oz

Step-by-step explanation:

74.1

=12.35

Answer:

12.35 oz

Step-by-step explanation:

74.1 divided by 6 equals 12.35

Susan answered 60% of the test questions correctly. She answered
21 questions correctly. How many questions were on the test?
A. 12.6
B. 56
C. 35
D. 21

Answers

C-35

Times 21 by 100 and divide by 60. (Use the is/of=%/100 method)

Complete the solution of the equation. Find the
value of y when x equals 15.
-x + 2y = -1

Answers

The answer is y = 7

The weight of 100 identical samples of a substance is 0.01 pounds.
What is the weight of 10,000 samples?

Answers

0.01/100 = 0.0001 x 1000 = 0.1lb

solve. -1/2 + (3/4 x 4/9) =

A. 1/9

B. -1/5

C. 5/6

D -1/6

Answers

Answer:

D, -1/6

Step-by-step explanation:

-1/2+(3/4*4/9)

Multiply equation inside the parentheses

3/4*4/9=12/36=1/3

Substitute 1/3 into original equation

-1/2+1/3=1/3-1/2

Make denominators the same

2/6-3/6

Simplify

-1/6, D

A sphere and a cylinder have the same radius and height. The volume of the cylinder is 11ft^3

Answers above on the picture^ thank you:)

Answers

Answer:

Step-by-step explanation:

solve for x.

12x/5=18

A.x = 43 1/5
B.x =7 1/2
C.x =-7 1/2

Answers

The answer is B. 7 1/2

North and South had conflict over which of the following? (lol I accidentally put this as math but it's HISTORY)

A. Slavery

B. Tariffs

C. States' Rights

D. All of the above

Answers

Answer: I think D

Step-by-step explanation: I know slavery and states rights but i don’t know about the b one

Answer: All of the above

Step-by-step explanation: The south wanted slavery, lower or no tariffs, and individualized states writes. On the other hand, the north wanted no slavery, tariffs, and a central government.

A stray dog ate 30 of your muffins. That was 5/7 of all of them! How many are left?

Answers

Answer:

Step-by-step explanation:

5/7x=30

x=42

Answer:

Step-by-step explanation:

Can you help me please

Answers

Answer:

f(-4)=3(4)^2-5(4)

16*3-20

48-20

f(-4)=28

Express 44 copies in 4 minutes as a unit rate.

Answers

Answer:

11:1

Step-by-step explanation:

For every 11 copies, 1 minute passes. Four minutes passed in this case and thus 11*4 would equal 44 and 1*4 would equal 4.

Solve for x. (Simplify)

Answers

Answer:

x = 8.75

Step-by-step explanation:

the ratio of [tex]\frac{4}{7}[/tex] : [tex]\frac{5}{x}[/tex]

x = 8.75

help in the next 2 mins!!! -4+7-3

Answers

your answer is 0 your welcome

Answer:

Step-by-step explanation:

-4+7-3=0

-4+7=3

3-3=0

Answer is 0

Alexa bought 25 pounds of turkey for $26.25. What is the cost per
pound?

Answers

Answer:

$1.05 Per Pound

Step-by-step explanation:

Answer: $1.05/pound

Step-by-step explanation:

$26.25 / 25 = $1.05

Graph a line through (2,-5) and have a slope of -4

Answers

im sorry: In order to solve the inequality -x > 8, which of the following steps must be done?

what is the slope for (1,3) and (1,-2)

Answers

Answer:

-6

Step-by-step explanation:

-2-3/1-1

what is the solution of the following? *
-4 = 16
Infinite solutions
no solution

Answers

Answer: no solution

Hope this helps and good luck :)

Step-by-step explanation:

Write the fraction as a decimal.

16/5

Answers

Answer:

3.2

Step-by-step explanation:

You rode your bike for 5 miles in 30 minutes.
If
you rode at the same rate, you would ride 12 miles in 80 minutes.
12
HINT:
5
30
O True
O False

Answers

it’s False, you’d have to divide the number of minutes by the miles to get how many minutes it took PER mile to ride your bike. 30/5 is 6 therefore it takes 6 minutes per mile. if you were to multiply 6 times 12 miles it would equal 72 minutes.

k=10/8
ggggggggggggggggggg

Answers

What’s the question?

A constant volume of cookie dough is formed into a cylinder with a relatively small height and large radius. When the cookie dough is placed into the oven, the height of the dough decreases as the radius increases, but it retains its cylindrical shape. At time t, the height of the dough is 8 mm, the radius of the dough is 18 mm, and the radius of the dough is increasing at a rate of 2 mm per minute.

Part A: At time t, at what rate is the area of the circular surface of the cookie dough increasing with respect to time? (5 points)

Part B: At time t, at what rate is the height of the dough decreasing with respect to time?

Answers

Answer:

a) dA/dt = 125,42 mm/min

b) dh/dt = - 1,78 mm/min

Step-by-step explanation:

The volume of the cylinder is:

V(c) = π*r²*h ( r and h radius of the base and heigh respectively )

Then the surface area is: Area of the base : π*r²

Plus lateral area : h*2*π*r

A(c) = π*r² + 2*π*r*h

With the help of differentials we obtain:

dA/dt = 2*π*r*dr/dt + 2*π*h*dr/dt + 2*π*r*dh/dt (1)

In this equation and at time t we know:

r = 18 mm dr/dt = 2 mm/min h = 8 mm dh/dt = ??

dA/dt = increasing rate of the surface area ( with respect to time)

To find dh/dt we know:

V(c) is constant, then

V(c) = π*r²*h then h = V(c) / π*r²

dh/dt = - [V(c)*2*π*r*dr/dt ] / π²*r⁴

By subtitution of V(c)

dh/dt = - [ π*r²*h *2*π*r*dr/dt ] / π²*r⁴

dh/dt = - [2*π²h*r³*dr/dt ] /π²*r⁴

dh/dt = - [2*h* dr/dt ] / r

dh/dt = - 2*8*2 / 18 mm/min

dh/dt = - 1,78 mm/min

By subtitution in equation (1)

dA/dt = 2*π*r*dr/dt + 2*π*h*dr/dt + 2*π*r*dh/dt

dA/dt = 2*π*18*2 + 2*π*8*2 + (- 2*π*18*1,78 )

dA/dt = 226,20 + 100,53 - 201,31

dA/dt = 125,42 mm/min

Following are solutions to the given points:

Formula:

Cylinder volume [tex]v = \pi r^2 h...............(i)[/tex]

[tex]\to \frac{dr}{dt} = 2 \frac{mm}{min}\\\\ \to \frac{dh}{dt} = -2 \frac{mm}{min}\\\\ \to h=8\\\\ \to r=18 \\\\[/tex]

Part A:

Calculating the circular area of the surface:

[tex]\to A=\pi r^2\\\\[/tex]

So, [tex]\frac{dA}{dt}=2 \pi r \frac{dr}{dt}.........(ii)[/tex]

Therefore

[tex]\to \frac{dA}{dt}= 2\pi \times 18 \times 2= 72 \pi \ \frac{mm^2}{min}\\\\[/tex]

Part B:

[tex]\to \frac{dh}{dt}= - 2 \frac{mm}{min}[/tex]

Learn more:

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Which number is a zero of the function f?
f(x) = x2 - x - 6
F 6
G2
H 3
IO

Answers

Answer:

zeros of the function are −2 and 3

Step-by-step explanation:

there is no -2 so H.3

the answer is a. 6...........

Answer the questions below. Write your answers in simplest form.
(a) A square has a perimeter of 100 yd. What is the length of each side?
yd

Answers

Answer:

25 yds

Step-by-step explanation:

Since it is a square all sides are equal and there are 4 sides so you divide the perimeter, 100, by 4 to get 25 yds.

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