1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ziro4ka [17]
3 years ago
14

High School

Mathematics
1 answer:
Lilit [14]3 years ago
6 0

Answer:

Step-by-step explanation:

6) y = 2x² +  6x - 80

1) y = 2*x² + 2*3x - 2*40

  y = 2 [ x² + 3x - 40]

2) Sum = 3

Product = -40

Factors = (-5) ; 8   {-5 +8 = 3  ; (-5)*8 = -40}

y = 2 [ x² + 8x - 5x - 40]

      = 2 [ x(x + 8) -  5(x + 8) ]

      = 2 [ (x +8) (x - 5)]

y = 2(x +8)(x -5)

b) y = 0

2(x + 8)(X - 5) = 0

x + 8 = 0 ;  x - 5 = 0

x = -8 ;             x = 5

(-8) ; 5  are the zeros.

You might be interested in
Find a counterexample for the statement. If the name of the month begins with a J, then it is a summer month
jeka57 [31]

Answer:

January

Step-by-step explanation:

A counterexample is something that proves the statement false.

January is a month that starts with J that is not a summer month.

That proves the statement false

7 0
3 years ago
Read 2 more answers
LeAnn is purchasing.giftwrap for a box that measures 10 inches long, 6 inches wide, and 6 inches tall. Calculate the total area
Sholpan [36]
10 time 6 times 6 = 360

A= Length times Width time Height.

Hope this helped!

:)
8 0
3 years ago
the dual bar chart below shows how a group of 190 students travel to school. given that 50 students, said they travel to school
Whitepunk [10]

The image of the bar chart is missing and so i have attached it.

Answer:

Bus = 75

Cycle = 20

Walk = 45

Step-by-step explanation:

We are told that 50 students said they travel to school by car.

However, in the bar chart, we see that we have a portion for boys and girls

Under car, when we count along the y-axis, we will see that, there are 6 units for boys and 4 units for girls.

Thus, to find the value of a unit since number of people that took cars is 50, we have;

(6x + 4x)/2 = 50

Where x is the value of one unit. Thus;

10x/2 = 50

5x = 50

x = 50/5

x = 10

Thus, a unit is 10

Under bus;

Boys have 7 units while girls have 8 units.

Thus;

Frequency by bus = ((7 × 10) + (8 × 10))/2 = 150/2 = 75

Under cycle;

Boys have 1 unit while girls have 3 units.

Thus;

Frequency by cycle = ((1 × 10) + (3 × 10))/2 = 20

Under walk;

Boys have 5 units while girls have 4 units.

Thus;

Frequency by cycle = ((5 × 10) + (4 × 10))/2 = 45

5 0
3 years ago
If P(A)=0.3, then the probability of the complement of A is ?
KonstantinChe [14]
C is the answer for this question
7 0
3 years ago
TIMED TEST PLEASE HELP
xxMikexx [17]
1 ) first offer
total payments
375.76×12×4
=18,036.48
Interest paid
18,036.48−16,000
=2,036.48
Second offer
Total payments
390.61×12×4
=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
Total payments
277.09×12
=3,325.08
Interest paid
3,325.08−3,000
=325.08
Credit card 2
Total payments
152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
=664.56
Susan will save
664.56−325.08
=339.48...answer

Hope it helps!
6 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP GEOMETRY!!!<br><br><br> What is the value of k?
    11·1 answer
  • What is the value of the expression 2.6 x 10 to the 9th power over 1.3 x 10 to the 2nd power?
    9·1 answer
  • What is 30 divided by 15
    10·2 answers
  • 4x+3y=7-(4x+y=9)<br> Subtract it
    14·1 answer
  • hurry please if you answer this question I'll give you the brainliest the question is does the tail rotor help the helicopters t
    11·1 answer
  • Part 1: If we double each side of the second equation, 2x+y=8 we have 4x+2y=16. Explain why the same pair that is the solution t
    8·1 answer
  • A robot can complete 3 tasks in 5/6 hour. Each task takes the same amount of time. It takes the robot 5/18 hour(s) to complete o
    10·1 answer
  • Which number line model shows the subtraction-3-52
    7·1 answer
  • Find the angle 0 between v=12i-5j and w= -4i-3j<br><br> HELP PLSSS
    10·1 answer
  • Can anyone slove this with formula ( operations with rational number)​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!