Is y=-3x^2+10 a function? Justification?

Answers

Answer 1
I think a function but i am not sure

Related Questions

What equation could be written for this table?

Answers

Answer:

y = 3 + 1/2 * x

Step-by-step explanation:

Answer asapppp pllssss

Answers

Answer:

|1|, |-2|, |7|, |12|.

Step-by-step explanation:

I'm assuming this is absolute value.

in the spring temperatures rise on average 6 degrees every 5 days. at that rate how many degrees would the temperature have risen after 30 days

Answers

Answer:

Ok, this is pretty simple. So, if it rises 6 degrees every five days, then we have to figure out how many "five days" are in 30 days. It would be 6! So now all we have to do is multiply. 6 times 6 equals 36 degrees.

The answer is 36 degrees.

Step-by-step explanation:

Answer:

36

Step-by-step explanation:

If it rises 6 degrees every 5 days, we just need to figure out how many 5 days are in 30 days. When you solve, you'll get 6. Now we can just multiply 6 x 6 = 36. Hope this helped, please mark brainliest if it did

please help

isolate x in
x+3y=1

Answers

Subtract 3y and move it to the right
X= 1 - 3Y
I think it’s X=1-3y

James and Kris are in the school play. James has 42 lines to memorize, which is 6 times
as many as Kris. Which equation shows how to find out how many lines Kris has?

Answers

Answer:

6k=42

Either one ill still answer the equation

Step-by-step explanation:

Let K = Kris

42=6k

A metal plate is 8.431 centimeters wide. Which is this measure written in word form?

Answers

Answer:

Eight and one hundred thirty-four thousandths

Step-by-step explanation:

Thats how u write it in word form! i hope this helped :)

The required word form of the measure 8.431  centimeters wide is eight and one hundred thirty-four thousandths centimeters wide.

What is a unit of measurement?

Unit of measurement is defined as every entity having its measures in dimensions, weight, and time. Such as for length we have a meter, for liquid we have liters, and so on.

Here,
The required number is 8.431, which can be written in word form as,
8.431 = Eight and one hundred thirty-four thousandths centimeters wide

Thus, the required word form of the measure 8.431  centimeters wide is eight and one hundred thirty-four thousandths centimeters wide.

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A hospital employs a total of 77 nurses and doctors. The ration if nurses to doctors is 9:2. How many nurses are employed at the hospital? How many doctors are employed at the hospital?

Answers

Answer: 63 nurses and 14 doctors

so you know the ratio is 9:2. that means for every 9 nurses there are 2 doctors. i didn't make an equation but i counted it.

if theres 9 (9*1) nurses theres 2 (2*1) doctors

if theres 18 (9*2) nurses theres 4 (2*2) doctors

if theres 27 (9*3) nurses theres 6 (2*3) doctors

you get the point so i multiplied 7 to 9 and 7 to 2, which means:

if theres 63 (9*7) nurses theres 14 (2*7) doctors

i hope this helps :)

10. (02.03)
Find the solution of 3 to the square root of x+6=-12 , and determine if it is an extraneous solution. (1 point)
x= -3; extraneous
x = -3; not extraneous
x= 10; extraneous
x= 10; not extraneous

Answers

Answer:

x= 10; extraneous

Step-by-step explanation:

Given the expression:

3√x+6 = -12

We are to find the value of x

Divide both sides by 3

3√x+6/3 = -12/3

√x+6 = -4

Square both sides

(√x+6)² = (-4)²

x + 6 = 16

x = 16-6

x = 10

Hence the solution is x =10 and it is extraneous solution

A tortoise walks 3 inches in 1 second. How many feet per second can the tortoise walk?

Answers

Answer:

0.25

Step-by-step explanation:

Each year malcom earns 120 hrs of vaction time at his job there 52 weeks in year what is the appromate number of hours of vaction time malcome earns in week

Answers

Answer:

2.3 hours

Step-by-step explanation:

✓In Each year; malcom earns total of 120 hrs of vaction

✓But we are given that 52 weeks = 1 year

✓The number of hours of vaction time malcome earns in week= (120 hrs/52 weeks)

= 2.3 hours

A family buys 6 tickets to a show. They also pay a $3 parking fee. They spend $27 to see the show and park. A. Find the solution to the equation you chose for the story above. B. Explain what the solution means in the context of the story.​

Answers

Equation: 6x+3=27
X= 4
6 is the cost per ticket, X is representing how many tickets the family buys, and 27 is the total amount of money they spend.
I’m not sure if this is what you were looking for but hope it helped.

Ffcffgffffggggvgfcgcvggfvv

Answers

Answer:

Husfivhuisfhvkusdhvkufadhvkudshfukdahf

Step-by-step explanation:

Which statement is true of an appropriate sample of a population? A sample must be a group of people who are the target of the survey question. A sample should have different characteristics than the population. O Asample must be very small. A sample should include only boys or only girls. THE ANSWER IS A​

Answers

Answer:

The answer is A simple must be a group of people who are the target of the survey question

Step-by-step explanation:

Solve the system of linear equations by substitution
y-x=0
2x-5y=9

Answers

Answer:

the answer is (-3,-3)

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Mrs. Apple noticed that, in her algebra class of thirty-two students, eight were
left-handed. What is the ratio of left-handed to right-handed students?

Answers

The answer is 8:24. Hope this helps!

Hi I need help please 10 points for answering questions 3 and 4 correctly please it’s due tomorrow

Answers

Answer:

3. 150%    4. 8.3%

Step-by-step explanation:

Percent error formula is the difference between the actual and estimated divided by actual  times 100.

3.   (5-2) / 2   x  100= 150%

4.  (24-22)/  24  x 100 = 8.3%

7. In the figure, P, Q and R points on level ground in a park. R is 600 m from Q and on a bearing of 305° from Q. Q is 950 m from P and on a bearing of 078° from P
Im having trouble with finding the distance. ​a

Answers

Answer:

The answer is below

Step-by-step explanation:

From the image:

∠P + ∠Q = 180° (consecutive angles are supplementary)

78 + ∠Q = 180

∠Q = 180 - 78

∠Q = 102°

∠RQN = 360° - 305° =(sum of angle in a point)

∠RQN = 55°

∠RQN + ∠RQP = 102°

∠RQP = 102 - 55 = 47°

a) Let PR = x

Using cosine rule:

[tex]x^2=600^2+950^2-2(900)(600)cos(47)\\\\x^2=485021.9\\\\x=\sqrt{485021.9} \\\\x=696 \ m[/tex]

Therefore PR = 696 m

b) Let ∠RPQ be A°

Using sine rule:

[tex]\frac{sin(A)}{600} =\frac{sin(47)}{696} \\\\sin(A)=\frac{sin(47)}{696} *600\\\\sin(A)=0.6304\\\\A=sin^{-1}(0.6304)\\\\A=39^0[/tex]

∠RPQ = 39°

Hence the bearing of R from P = ∠NPR = 78° - 39° = 39°

1) What is the difference between a number and its positive square root is 12. Find the number
2) One of the diagonals of a rectangle is 20cm long. If the difference between its length and width is 4cm, find the area of the rectangle

Answers

Answer:

algebra

Step-by-step explanation:

using algebra form an equation than solve for the variable keep in mind u have to square it

Select all ratios equivalent to 2:5

Answers

Answer:

Sorry but ummm... you forgot to add a screenshot... :/

Step-by-step explanation:

Maybe post that question again with a screenshot

Answer:

16 : 40

Step-by-step explanation:

it is the only option that will work

Evaluate the expression.

−14(−8) + 6 − 118 =

Answers

Answer:

0

Step-by-step explanation:

Which inequality is NOT satisfied by this table of values

Answers

Answer:

Hope this helps better

Answer; y < x-1

Step-by-step explanation:

5. Adam spent half of his weekly allowance buying lunch. To earn
more money his parents let him shovel snow for $9.30.
What is his weekly allowance if he ended with $15.10?

Answers

Answer: $11.60

Explanation: First, you want to do 15.1 - 9.3 to find what half of his weekly allowance is, and that would be 5.8, AKA $5.80. Next, you want to multiply that number by 2, which would be 5.8(2) to get 11.6, or your final answer, $11.60.

In ΔOPQ, o = 4.4 inches, p = 9.6 inches and ∠Q=89°. Find the length of q, to the nearest 10th of an inch.

Answers

Answer: 10.49026 = 10.5

Step-by-step explanation:

The length of the side q of the triangle OPQ is 10.5 inches.

What is cosine law?

The law of Cosines, also known as Cosine Rule or Cosine Formula basically relates the length of the triangle to the cosines of one of its angles.

Given that, in a triangle OPQ, O = 4.4 inches, p = 9.6 inches and ∠Q=89°, we need to find the measurement of side q,

So, using cosine law for triangles,

q² = p²+o²-2poCos(89°)

= 4.4²+9.6²-2(4.4)(9.6)Cos(89°)

= 10.5

Hence, the length of the side q of the triangle OPQ is 10.5 inches.

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What is the domain of the function? {(-3,-9), (7,9), (9, 1), (7,3)} Colleen wrote her answer as (-3,7,7,9) and she got it marked WRONG! What did she do wrong?​

Answers

Answer: added

Step-by-step explanation:

1.

A jar contains n nickels and d dimes worth a total of $30. Which equation models this

information?

A. 0.05n +0.10 = 30

B. 5n + 10d = 30

C. 0.50 +0.10 = 30

D. n + d = 30

Answers

D Because it is telling the total of the nickels and dimes

The required equation model is n + d = 30 which represents a jar containing n nickels and d dimes worth a total of $30. which is the correct answer would be an option (D).

What is a numerical expression?

A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.

We have been given that a jar contains n nickels and d dimes worth a total of $30.

To determine the equation model that represents the given information.

As per the given information, the algebraic form is:

quantity of nickels + quantity of dimes = total worth

n + d = 30

Thus, the required equation model is n + d = 30 which represents a jar containing n nickels and d dimes worth a total of $30.

Hence, the correct answer would be option (D).

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Solve the proportion.
Need help right now!!

Answers

Answer:

k=5

Step-by-step explanation:

please tell me if wrong

Answer:

The answer is b or k=5.

Step-by-step explanation:

this should be right I just did that problem

n=1,064÷28
anyone knows the answer \

Answers

I think the answer is 38

Answer:

n=38

Step-by-step explanation:

Can anybody please help me with this question please

Answers

Well it has a right angle thing which is 90 so do 90+38+19=147
180-147=33

Step-by-step explanation:

The Missing side using Pythagorean theorem

=√(19)²+(38)²

=√361+1444

=√1805=19√5

=42.485≈42.49( to the nearest hundredth)

Missing angle

=let the angle be x

tan(x)=19/38

x=tan^-1(½)=26.565

x=26.57(to the nearest hundredth)

Amy want to buy a desk. The original price is 60$. It is on
sale for 10%. How much will amy save?

Answers

Answer:

20.40

Step-by-step explanation:

Answer:

10 dollars. I think.

Step-by-step explanation:

It takes a word processor 26 minutes to word process and spell check 6 pages. Find how long it takes her to word process and spell check 27 pages. It takes the word processor minutes

Answers

Answer:

It takes the word processor 117 minutes to word process and spell check 27 pages.

Step-by-step explanation:

With the information provided, you can use a rule of three to find how long it would take to word process and spell check 27 pages given that it takes 26 minutes to word process and spell check 6 pages:

6 pages   →  26 minutes

27 pages  →          x

x=(27*26)/6=117 minutes

According to this, the answer is that it takes the word processor 117 minutes to word process and spell check 27 pages.

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