MATHEMATICS HIGH SCHOOL

(5x2 + 2x + 11) - (7 + 4x - 2x2)9 - 2x - 2x2
3x2 - 2x + 4
3x2 + 6x + 4
7x2 - 2x + 4

Answers

Answer 1
Answer: The answer is 7x^2 - 2x + 4, so answer D. 
Answer 2
Answer: Your answer should be D!

Related Questions

What polynomial identity should be used to prove that 16^2=(10+6)^2? (A. Difference of Cubes; B. Difference of Squares; C. Square of Binomial; D. Sum of Cubes)
Which statement is true about a line and a point
What is the measure of rcd in the figure below
Solve the inequality. |4x + 2| < 26 A. –32 < x < 20 B. –7 > x > 6 C. –6 < x < 6 D. –7 < x < 6
I need help with this Show work on each one

Select the graph that represents the volume of a cube as a function of the length of an edge.

Answers

Answer:

The Graph D) is correct

Step-by-step explanation:

Let, x be length of cube and y is volume of cube

The volume of cube is given by

Volume = (\textrm{Length of one side of cube})^(3)

Such that, all the sides of cube are equal

We can write as y=x^(3)

Thus, The Graph D) is correct

a department store has 39 cartons of new shirts to unpack and display. Each carton contains 25 shirts. Each display rack holds 19 shirts.how many racks will the store need to hold all the shirts?

Answers

39*25=975
975/19=51
51 racks

The number of plastic straws produced by a machine varies directly as the amount of time the machine is operating. If the machine produces 20,000 straws in 8 hours, how many straws can it produce in 50 hours?

Answers

Given is the direct relationship between number of produced straws and the hours of operating machine.

Given that 20,000 straws are produced in 8 hours of machine's operation.

Let's assume that 'x' straws are produced in 50 hours of machine's operation.

Using the concept of proportions, x straws in 50 hours would be proportional to 2000 straws in 8 hours.

(X \;straws)/(50 \;hours) =(20,000 \;straws)/(8 \;hours) \n\n(X \;straws)/(20,000 \;straws) =(50 \;hours)/(8 \;hours) \n\n(X)/(20,000) =(50)/(8) \n\nCross \;multiplying \n\n8*X = 50*20000 \n\n8X = 1,000,000 \n\n(8X)/(8) =(1,000,000)/(8) \n\nX=125,000 \;straws

Hence, total 125,000 straws would be produced in 50 hours.

When the sum of a number plus 3 is squared it is 11 more than the sum of the number plus 2 when squared.

Answers

x-number\n\n (x+3)^2-11=(x+2)^2\n\n x^2+2*3*x+3^2-11=x^2+2*2*x+4\n\n x^2+6x+9-11=x^2+4x+4\ \ |-x^2\n\n6x-2=4x+4\n\n6x-4x=4+2\n\n2x=6\ \ |:2\n\n x=3

Pete earns $8.50 per hour plus tips. On Tuesday, he received $16 in tips.How many hours did Pete work if he earned a total of $50 on Tuesday?


Help me plz

Answers

Answer:

Pete worked for 4 hours.

Step-by-step explanation:

If you subtract his tips from his overall total (50-16) you get 34. Now you divide what's left of his total by his hourly wage (34/8.5) which gets you 4.

Sue chooses a dress to wear when she goes out with her parents, but she can wear it only if her parents approve. The probability that Sue selects a black dress is 40%. The probability that Sue's parents approve when she chooses a black dress is 30%. What is the probability that Sue chooses a black dress and her parents approve?

Answers

40% = 0.4

30% = 0.3

0.3*0.4 = 0.12

0.12 = 12%
Other Questions
7. Find the value of:a) The number when 40% of the number is 10
Which of the following is the abbreviation for a milligram?gmigMgmg
Sam has $2.25 in quarters and dimes, and the total number of coins is 12. How many quarters and how many dimes?HELP NOW DUE In 30 min!
Simplify. 5^-1(3^-2) (1 point)