Find the value of the expression 2x2 - 4x2 + 7x – 7 if x= 3. What is the value if x = 2?

Answers

Answer 1

Answer:

if x= 3, so it's 32 if x= 2, so it's 7

Step-by-step explanation:

Related Questions

In how many ways can Carlos draw a blue or a green marble from a jar containing 30 blue marbles and 6 green marbles?

5

36

24

180

Answers

Answer:

5 ways

Step-by-step explanation:

He can draw in 5 ways

Answer:

Step-by-step explanation:

I chose 5 and missed it. Review says correct answer is 36

A REALITY OF RATIONAL ALGEBRAIC EXPRESSIONS

Answers

Rational equations can be used to solve a variety of problems that involve rates, times and work. Using rational expressions and equations can help you answer questions about how to combine workers or machines to complete a job on schedule.

A polynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. If the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?

The graph of the function is positive on (–6, –2).
The graph of the function is negative on (negative infinity, 0).
The graph of the function is positive on (–2, 4).
The graph of the function is negative on (4, infinity).

Answers

Answer:

A. The graph of the function is positive on (–6, –2)

Step-by-step explanation:

The given function is an increasing function that intercepts the x- axis at -6, -2 and 4 and touches at 0.

It has minimum at negative infinity, maximum at positive infinity, local minimums between -2 and 0 and between 0 and 4, local maximum between -6 and -2.

Approximate shape is given in the attached.

Correct choice is the first one, the rest choices are all incorrect.

B is the midpoint of AC. if ac =10 and BC =x+1 find the value of x

Answers

Answer:

x=9

Step-by-step explanation:

x+1=10

*subtract 1 from both sides

x=9

3/5 × 7 1/2 ÷ 2 7/10

Answers

Answer:

simplify??

Step-by-step explanation:

Exact form:5/3

Decimal form:1.6

Mixed number form:1 2/3

Solve the equation. 6x+7=8x−15

Answers

x=11

Step-by-step explanation:

6x+7=8x-15

7+15=8x-6x

22=2x

x=22/2

x=11

Please help. I don't know the answer

Answers

Answer:

The answer is 3x+4y<-12

Step-by-step explanation:

Hey I really need help with this

Answers

Answer:

2.7 cm

Step-by-step explanation:

subtract DC from EC

2.7cm

Subtract dc from ec

Statement (Mathematical Steps) 12 > 7(4 + 5) − 19 show ecah reasonReason

Answers

Answer:

4 23/42 ≅ 4.547619

Step-by-step explanation:

The ____ of the ratio of two proportional qualities?

Answers

Answer:

Step-by-step explanation:

its 2

Kayleigh has 2 apples for every 3 oranges in her fruit basket. If Kayleigh has 15 oranges altogether in her basket, how many apples must she have in her basket?
5 apples 10 apples
25 apples 15 apples

Answers

She will have 10 apples because there is a 2:3 ratio.

Answer:

10 apples.

Step-by-step explanation:

x-16=9(2x+3)-9 find x

Answers

Answer:

x= -2

TO MUCH STEPS

Herman and his dad are leaving early in the morning for his lacrosse tournament. Their house is 210 miles from the tournament. They plan to stop and eat after 2 hours of driving, then compete the rest of the trip. Herman's dad plans to drive at an average speed of 60 miles per hour. How long will the second part of the trip take

Answers

The second part of the trip took 1.5 hours.

Average Speed is the ratio of the total distance travelled to the total time taken to cover that distance. It is given by:

Average Speed = total distance ÷ total time

Given that the distance from the house to the tournament is 210 miles, hence:

Total distance = 210 miles

Also, The journey was in two parts, the first part took 2 hours. Let the second part take t hours. Therefore:

Total time = t + 2

The average speed of 60 miles per hour, hence:

60 = 210 ÷ (t + 2)

60(t + 2) = 210

60t + 120 = 210

60t = 90

t = 1.5 hours

Therefore the second part of the trip took 1.5 hours.

Find out more at: https://brainly.com/question/9834403

Is ""2.345432543..."" a rational number

Answers

Answer:

Yes, it is a rational number

Step-by-step explanation:

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Question 11 of 40
Solve the inequality.
4x < 20
A. X> 5
B. x < 5
C. x < 80
D. X> 80

I know it’s 5 just which way is the sign supposed to point?

Answers

Answer:

Step-by-step explanation:

4x<20

4/4 x < 20/4

x<5

I need the answer to A and B

Answers

Answer:A=2 B=1

Step-by-step explanation:

A recipe called for the ratio of sugar to flour to be 8 : 7.If you used 48 ounce of sugar, how many ounces of flour would you need to use?

Answers

Answer:

42 ounces of flour

Step-by-step explanation:

8 - 48

7 - x

When you cross multiply, you get:

8x = 7*48

8x = 336

x = 336/8

x = 42

Feel free to mark this as brainliest! :D

what is 9,340 x 4/3.

Answers

Answer:

12453.3333333

Step-by-step explanation:

4/3 is the same things as 4 ÷ 3 which is 1.33333333333

1.33333333333*9340 = 12453.3333333

Hope this helps!

If Mac were to get 76 apples from her friends and then get 3 more from the store, and then find two absolutely fine apples in the sewers, then go for a walk and find 7500 apples in someone's car, how many healthy apples would she find? Bet you can't solve it ;)

Answers

Answer:

Step-by-step explanation:

Answer:

None because the apples are all poisoned.

Step-by-step explanation:

Solve for the value of y.

Answers

Answer:

y = 4(degrees)

Step-by-step explanation:

90-60 = 30

30 = 8y-2

32 = 8y

4 = y

lets check

32-2 = 30+60 = 90

correct :D

Consider the graph of f(x).
12
10
-6
- 4
120
2 4 6 8
Which statements are true about tthe function represented by the graph?
Select all that apply.
The y-interceptis (0.-2).
The x-interceptis (0,5).
The domain of the function is (-3.3)
The domain of the function is all real numbers.

Answers

Answer:

The domain of the function is all real numbers.

Step-by-step explanation:

The answer is not A because the y-axis is the vertical (straight up and down) axis, and it crosses of that at positive 5.

The answer is not B because the x-axis is the horizontal axis, and it crosses that at negative 2.

Don't let them confuse you by saying the intercepts of one is the other!

It is also not C because the answer is D, we know this because the arrows at each end of the arrow signify that the line keeps going infinitely in each direction.

Hope this helps!

Liv earns $9.50 for every two bracelets she sells. The equation y = 4.75x can be used to represent this situation.

What is the constant of proportionality? Express your answer in decimal form.

Answers

Answer:

2.58

Step-by-step explanation:

Step 3: Multiply by the scalar (1 over the determinant): Aâ’1 = a11 a12 a21 a22 a11 = a12 = a21 = a22 =

Answers

Answer:

a11 = 1

a12 = -1

a21 = -1.5

a13 = 2

Please helpppppp!!!!

Answers

Answer:

3 times

Step-by-step explanation:

Please when giving answer please show the work my teacher won’t let me turn it in with just the answer

Answers

Answer:

5000 millimeters

Step-by-step explanation:

5*1000=50

A local nonprofit organization is selling popcorn to raise money for hurricane relief. The organization paid $4 per bag for the popcorn and sold it for $5 per bag. What was the percent markup on each bag of popcorn?

Answers

Percent markup is 125% sorry if I’m wrong

3x²-x+1 is a factor of ax⁴+bx³+12x² - 6x + 1 . Then a-b equals

Answers

Answer:

a-b = 31 (a ≠ b)

Step-by-step explanation:

(3x²-x+1)(px²+qx+1) = ax⁴+bx³+12x² - 6x + 1

3px⁴+(3q-p)x³+(3+p-q)x²+(q-1)x+1 = ax⁴+bx³+12x² - 6x + 1

q-1 = -6 q = -5

3+p-q = 3+p-(-5) = 8+p = 12 p = 4

b = 3q-p = 3*(-5) - 4 = -19

a = 3p = 3*4 = 12

a-b = 12 - (-19) = 31

What is 12x40
What is 90x8,000
What is 7x9

Answers

Answer:

12 x 40 = 480

90 x 8,000 = 720,000

7 x 9 = 63

[tex]Hey! :)[/tex]

[tex]QUESTION:[/tex]

What is 12x40??

[tex]ANSWER:[/tex]

[tex]480[/tex]

[tex]QUESTION:\\90*8,000\\ANSWER:\\720,000\\QUESTION:\\7*9\\ANSWER:\\63[/tex]

[tex]^C^O^M^M^E^N^T^S^:[/tex]

Hope it helps! Brainliest?

[tex]^a^n^s^w^e^r^e^d:\\\\^*GraceRosalia^*[/tex]

If 2 angles in a triangle are 71 degrees and 56 degree, what is the measure of the third angle?

Answers

Answer:

Step-by-step explanation:

Sol'n

Let the remaining angle of a triangle be x.

x+71+56=180 (Sum of angles of a triangle is 180°)

or, x+127=180

or, x=180-127

.:, x=53°

.:, The measure of third angle is 53°

find f^-1(x) where
f(x)=3x+2/x

Answers

Answer:

x = -3y + 2

-3y = x - 2

f^-1(x) = y = -(x-2)/3

Step-by-step explanation:

The inverse here is just straight line so it is a function

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