Find f(-2) if f(x) = x + x + 7. f(-2) =

Answers

Answer 1

Answer:

f(-2) = 9

Step-by-step explanation:

Given that,

f(x) = x² + x + 7

We need to find the value of f(-2).

Put x = -2 in the given function.

f(-2) = (-2)² + (-2) + 7

= 4-2+7

= 9

Hence, the value of f(-2) is equal to 9.


Related Questions

An isosceles triangle has two sides of length n where n is an integer greater than 1. What is the smallest possible integer length of the third side?(1 point)

⌊n/2⌋+1

n−1

1

0

Answers

Answer:

1

Step-by-step explanation:

The answer is 1 because of the triangle inequality theorem. In order for the shape to be a triangle, two of the sides need to be smaller than one. The two sides we know of is n, n is equal to an integer greater than 1. So, in order for the triangle to be a triangle, the third side has to be at least 1. I also had the same question on my assignment.

Debra tutors history. For each hour that she tutors, she earns 50 dollars.
Let E be her earnings (in dollars) after tutoring for H hours.

Write an equation relating E to H . Then use this equation to find Debra's earnings after tutoring for 19 hours.

Answers

E x 19 = h I’m pretty sure

Rita earns 44dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells.
Let A be the amount (in dollars) that Kala earns in a week if she sells B books.
Write an equation relating A to B. Then use this equation to find the amount of money Rita earns if she sells 35books.
Equation:
Amount Rita earns if she sells 35books: dollars

Answers

Answer 1: 44 + B = A
44 + (35) = A
Answer 2: 44 + 35 = $79

given H(x)=4(x+3), which of the following is the value of H(-2)?

Answers

Answer:

H(-2)=4

Step-by-step explanation:

H(x)=4(x+3)

Let x =-2

H(-2)=4(-2+3)

      =4(1)

     = 4

Abigail took a science test and got 36 correct and 4 incorrect answers. What was the percentage of correct answers?

Answers

Answer: 88.89

Step-by-step explanation: You put the correct answers over the number of answers in total 32/36 then you divide: Multiply the denominator (bottom) of the fraction by a number to make the denominator equal 100.

Multiply the numerator (top) of the fraction by the same number.

Answer:

90%

Step-by-step explanation:

First you have to find out what is the total amount of questions so 36+4=40

Anyway the answer is 90

This table shows a proportional relationship. х y Complete the equation that represents the table. - 4 - 6 Enter your answer as a decimal in the box. -2 3 0 0 y = Х 8. 12​

Answers

Answer:

y = 1.5x

Step-by-step explanation:

An equation that represents a proportional relationship can be written as y = kx.

Where,

k = constant of proportionality or unit rate = y/x

Using a pair form the table of values, say (-2, -3),

k = y/x = -3/-2 = ³/2 = 1.5

Substitute k = 1.5 into y = mx

The equation that represents the table would be:

y = 1.5x

The proportionality constant is 2/3 and the required equation is y = 2/3x

Tables and values

The standard equation of a line is expressed as y = mx + b

where:

m is the slope of the line

b is the intercept

From the given question, we are to find the rate of change (slope) from the give  table.

USing the coordinate points from the table (-2, 0) and (-3, 0)

Also recall that;

y = kx

-2 = k(-3)

k = 2/3

Hence the proportionality constant is 2/3 and the required equation is y = 2/3x

Learn more on rate of change here: https://brainly.com/question/8728504

math The newly elected president needs to decide the remaining 3 spots available in the cabinet he/she is appointing. If there are 15 eligible candidates for these positions (where rank matters), how many different ways can the members of the cabinet be appointed

Answers

Answer:

2730 ways

Step-by-step explanation:

Given that,

There are 15 eligible candidates for these positions.

The newly elected president needs to decide the remaining 3 spots available in the cabinet he/she is appointing.

It is a concept based on permutations.

[tex]P(n,r)=\dfrac{n!}{(n-r)!}[/tex]

Put n = 15 and r = 3

[tex]P(15,3)=\dfrac{15!}{(15-3)!}\\\\=\dfrac{15!}{12!}\\\\=\dfrac{15\times 14\times 13\times 12!}{12!}\\\\=15\times 14\times 13\\\\=2730[/tex]

Hence, 2730 ways can the members of the cabinet be appointed

PLEASE HELP ASAP please someone help me so far my day has sucked and I need help. this is easy math just help meeeee.
5/6 +4/5
please help me answer correctly my grade depends on it

Answers

Answer:

1  19/30

Step-by-step explanation:

Answer:

NEVERMIND (I thought 45/30, but i dont know)

Step-by-step explanation:

What is the order of operations needed to evaluate the expression 4(5)−8÷2?

Answers

Using PEMDAS we would do the multiplication and division first and then the subtraction. So 4*5 = 20 and 8/2 is 4 so therefore 20-4 is 16.

Answer:

PEMDAS (Multiply and divide, then add and subtract)

Step-by-step explanation:

Multiply 4 and 5 to get 20-8/2

Divide 8 by 2 to get 20-4

subtract to get 16

- 5/6e (the fraction) - 2/3e (the fraction)=-24

Answers

Answer:

I believe this is the correct answer. e = 16

IT 40 POINTS SO PLZ HELP ITS 5 QUESTIONS PL ANSWER THEM ALL

How can a number line help in ordering rational numbers:




How are number lines and the coordinate plane related:



Does the order of the numbers in an ordered pair matter when naming a point? Can that point be represented by more than one ordered pair?



A point is reflected across the x-axis. The new point is located at (4.75, -2.25). Write the ordered pair that represents the original point. Explain.



A point is reflected across the x-axis. The new point is (5, -3.5). What is the distance between the two points? Explain.

Answers

Answer:

1: It places them in an order sequentially relative to each other.

2: Number lines show the location of a number relative to each other on a one dimensional plane, and a coordinate plane does the same on two axis, or a two dimensional plane.

3: The order of the numbers do matter because the first one is the x coordinate and the second is the y. We nee a point of reference so we aren't able to make it so a single point can be represented by multiple ordered pairs, and vice versa so we can accurately share the information without additional interpretation.

4: (4.75, 2.25) Because to move across the x axis is to move in a direction perpendicular to it, meaning only the y coordinate will change. To be mirrored, it has to be copied and the absolute value of y (from both the x and y axis) must be maintained, just moved into the quadrant above or below it.

5: It is 7 units because the original coordinate would be 3.5 (as explained previously), and to move all the way to -3.5 you would need to cover the first 3.5 units to get to y=0, and then another 3.5 units down to get to y=-3.5. This is a total of 7 units moved.

Step-by-step explanation:

Find the difference write the answer in simplest form 11/18 -1/6

Answers

Answer:

4/9

or

0.4

Step-by-step explanation:

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
For a charity event, raffle tickets are printed such that they have a vowel (excluding ») as the first character and a
prime number less than 10 as the second digit. (Note that 1 is not a prime number.)
The probability that the winning ticket has the vowel contained in the word event and the digit is the number of
letters in the word event is 1/20 .
Reset
Next

Answers

Answer:

yes 1/20 is correct

Step-by-step explanation:

The probability that the winning ticket will have the letter e on it would be P=5%.

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

P(E) = Number of favorable outcomes / total number of outcomes

For the probability of two independent events:

P(A and B) = P(A) P(B)

so we have to find the probability for each event to happen.

For a charity event, raffle tickets are printed such that they have a vowel (excluding ») as the first character and a prime number less than 10 as the second digit.

(Note that 1 is not a prime number.)

There are 5 vowels in the alphabet (a, e, i, o, and u).

Therefore the probability for the first letter to be e

P(A) = 1/5

We also know there are 4 prime numbers between 0 and 10 (2, 3, 5, 7)

so the probability for the number to be a 5 is:

P(B) = 1/4

Now, the probability of getting a ticket that starts with an e and ends with a 5

P(A and B) = P(A) P(B)

= 1/4 x 1/5

= 1/20

Therefore, the probability is 5%.

Learn more about probability here;

https://brainly.com/question/11234923

#SPJ5

Alexandra’s soccer team played 25 games and won 22 of
them. What percent did the team win?

Answers

Answer:

88%

Step-by-step explanation:

25*4=100. this means we have to multiply 22*4, which gets us 88%

Answer:

0.88%

Step-by-step explanation:

25 divided by 22

Doug drew two identical triangles. He wants to prove the converse of the Pythagorean Theorem by using both triangles. The first triangle has side lengths of 12 cm, 16 cm, and 20 cm, such that 122 + 162 = 202. Using the converse of the Pythagorean Theorem, enter the length of the side opposite the 90° angle of the second triangle.______cm

Answers

Answer:

Answer is explained in the explanation section

Step-by-step explanation:

Solution:

Converse of the pythagorean theorem helps us to check whether a triangle is a right triangle or not. Converse of the pythagorean theorem is simply the opposite of the pythagoren theorem. Pythagorean theorem states that, if triangle is right triangle, then [tex]a^{2} + b^{2} = c^{2}[/tex]. On the other hand, Converse of the Pythagorean theorem states that, if  [tex]a^{2} + b^{2} = c^{2}[/tex], then triangle is a right triangle.

Pythagorean theorem = [tex]c^{2} = a^{2} + b^{2}[/tex]

Converse of the pythagorean theorem = [tex]a^{2} + b^{2} ? c^{2}[/tex]

First of all let's check the first triangle is right triangle or not.

a = 12

b= 16

c= 20

So,

[tex]a^{2} + b^{2} = c^{2}[/tex].

144 + 256 = 400

400 = 400

Yes, 1st triangle is no doubt a right triangle. On the other hand, we are given that 2nd triangle = right triangle as we are given the 90 degree angle already. Here, we know that triangle is a right triangle

hence, [tex]a^{2} + b^{2} = c^{2}[/tex]. will surely be there.

Now, we have find out the side opposite to the 90 degrees angle, which is c.

we also know that, right triangles sides follow the pattern of 3x,4x and 5x

Since, c is the longest side.

Hence, c= 5x

There are six hats and seven mittens what is the ratio of mittens to total

Answers

Answer:

7:13

Step-by-step explanation: The ratio of mittens is 7 and the ratio of the total items (including the hats) would be 13, because 6+7=13. Therefore, the ratio of mittens to the total would be 7:13. Hope this helps ^-^.

PLEASE HELP!!!! Liner equations & graphs!!! I REALLY NEED HELP W THIS !!!!

Answers

Answer:

line X

Step-by-step explanation:

2(5x+7)=16
what the answer?

Answers

Answer:

x = 1/5

Step-by-step explanation:

2(5x + 7) = 16

2 * 5x + 2 * 7 = 16

10x + 14 = 16

10x = 16 - 14

10x = 2

x = 2/10

x = 1/5

Solve the inequality:

Please select the best answer from photo of choices provided.​

Answers

Answer:

b. h>-4

Step-by-step explanation:

Remember solving a inequality is similar to solving an equation, to do so you need to isolate the variable.

[tex]\frac{3}{2}h+12\geq 6[/tex]

To solve first subtract 12 from both sides

(3/2)h>-6

Then, multiply both sides by (2/3)

h>-4

50 POINTS!!!There were 50 questions on Vince's math test. He answered 45 questions correctly. What percent of the questions did Vince answer correctly?

Answers

Answer:

90%

Step-by-step explanation:

50 x 2 is 100

40 x 2 is 80

5 x 2 is 10

80 +10 = 90

Can somebody help me with my math I’ll give u brainlest

Answers

Answer:

yess!!

Step-by-step explanation:

''-''

Answer:

where are questions

Step-by-step explanation:

What is the slope of the line that passes through
the points (-8, 2) and (-8, -4)?

Answers

Answer:

The slope is undefined

Step-by-step explanation:

as - 4-2/-8-(-8)

Is - 6/0

PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!

Cecilia records the weight change in her cat over 2 weeks. What number does she record as the total weight change for her cat?


LOOK AT THE ATTACHED PICTURE

Answers

Answer:

The total change is [tex]\frac{1}{16\\}[/tex]

Step-by-step explanation:

How many 1/ 3 pound hamburger patties can be made from 4 pounds of ground beef?

Answers

Answer:4

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Each pound is equal to 3 of the 1/3 pound patties

multiply 3 by 4 and you get 12.

What is (x-2)-(x-5)? Plz I will mark u brainliest.

Answers

Answer: 3

This is the simplified way

Question 16 please help me

Answers

The answer is 32.8 this is because using the Pythagorean it’s a”

Please answer this correctly without making mistakes

Answers

14 miles and 13 yards :)

2. Which equation is true when x=3?
A. 8x = 28
B. X - 19 = 16
C. 28 + x = 25
D. S =1

Answers

the correct answer is c

Answer:c

Step-by-step explanation:

Wich statement best explains the relationship between the numbers divisible by 6, 2, and 3? what's the answer?

Answers

Answer:

oh! I once had this, the answer is a number that is divisible by 6 is also divisible by 2 and 3 because 2 and 3 are factors of 6.

estimate the quotients 6.15 ÷ 31​

Answers

THE ANSWER IS 0.1983871
Other Questions
Can someone tell me what the slope is ? There were 4983 students going on the field trip. Each bus could hold 60 students. How many buses did they need to transport all of the students? Can someone please help ASAP how much KE does the car have if it weighs 450kg and moves at the speed of 23 m/s? What is the function of mitochondria in prokaryotes? Which line from The Medicine Bag contains dialogue?He said this in such a way that no one could argue with him.My friends kept asking to come see the old man, but I put them off. Grandpa relaxed, and between sips of soup, he told us of his journey.You found the money in my boots? he asked Mom. Find the final price of a scarf if its on sale for 35% off and there is a tax of 6%. The scarf originally costs $95. (NEED A equation) 607050 Find angle x Which Sentence is a Generalization? A. Some teachers are nice B. My teacher is Funny C, All teachers are strict D. Many teachers like to travel PLEASEEEEEE HELPPPP PLEASEEEEE what is the domain of the function y= cube root x-1 For her science project, Sylvia collected flowers and measured their length. The line plot displays the lengths of the flowers. Ifthe flowers were laid end to end, what is the total length of all the flowers?Length of FlowersNumberof FlowersOA. 5 feetOB. 5 feetOC. 54 feetOD. 58 feet Question in pictureim not smart One-third of Olivia's age, increased by 12, is equal to twice her age, decreased by 3. How old is Olivia? How many valence electrons these elements have 30pts PLEASE HELP I WILL GIVE BRAINLIEST TO RIGHT ANSWERThe distance of a golf ball from the hole can be represented by the right side of a parabolawith vertex (-1,8). The ball reaches the hole 1 second after it is hit, at time 0.What is the equation of the parabola, in vertex form, that represents the ball's distancefrom the hole, y, at time x? Will give the brainiest! Please answer it correctly and thoughtfully. Please answer the first question with AT LEAST 2-3 sentences, while the last one can just be examples1. Meiosis is two divisions of a reproductive cells nucleus. It occurs in a continuous series of steps. Compare AND contrast the steps of meiosis I to meiosis II. 2. Describe mutation. Give EXAMPLES where mutations could be harmful, beneficial, or neutral. What is the answer to: 12x1632 AWNSER FIRST AND CORRECT GETS BRAINLYIST AND 30 points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Read this excerpt from Through the Looking-Glass by Lewis Carroll."And when I found the door was locked,I pulled and pushed and kicked and knocked.And when I found the door was shut,I tried to turn the handle, but There was a long pause."Is that all? Alice timidly asked."That's all, said Humpty Dumpty. "Good-bye.Which idea does this excerpt support?A. Alice is not very skilled at understanding poetry.B. The rules of the Looking-Glass land can be strange.C. Alice finds it hard to communicate in the Looking-Glass land.D. Humpty Dumpty is a nursery-rhyme character. 4. If we had a waxing crescent moon on December 3, what phase will be seeing on December13 (10 days later)? What is Douglass's main purpose in this speech?