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
jasenka [17]
3 years ago
5

Find the vertex of the parabola: y = -2x2 - 4x - 7

Mathematics
1 answer:
snow_lady [41]3 years ago
7 0
X=-b/2a=4/14=2/7
Plug this value back into the function to find the corresponding Y value
You might be interested in
Help please! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
solmaris [256]

Answer:

x= 1/2

and y=3

Step-by-step explanation:

Let's solve your system by substitution.

y=10x−2;2x+y=4

Step: Solvey=10x−2for y:

y=10x−2

Step: Substitute10x−2foryin2x+y=4:

2x+y=4

2x+10x−2=4

12x−2=4(Simplify both sides of the equation)

12x−2+2=4+2(Add 2 to both sides)

12x=6

12x

12

=

6

12

(Divide both sides by 12)

x=

1

2

Step: Substitute

1

2

forxiny=10x−2:

y=10x−2

y=10(

1

2

)−2

y=3(Simplify both sides of the equation)

Answer:

x= 1 /2

and y

3 0
3 years ago
Dominic works on the weekends and on vacations from school mowing lawns in his neighborhood. For every lawn he mows, he charges
Ivahew [28]

Answer:

20\ lawns = \$240

9 \ lawns = \$108

<em>See Attachment for Graph</em>

<em></em>

Step-by-step explanation:

Given

1\ lawn = \$12

Solving (a): Number of lawns in $240

1\ lawn = \$12

Multiply both sides by 20

20 * 1\ lawn = \$12 * 20

20\ lawns = \$240

Solving (b): Cost of mowing 9 lawns

1\ lawn = \$12

Multiply both sides by 9

9 * 1\ lawn = \$12 * 9

9 \ lawns = \$108

To create a graph, we need to generate a formula;

If

1\ lawn = \$12

2\ lawn = \$24

3\ lawns = \$36

x\ lawns = \$12x

So:

<em>The graph formula is</em>

y = 12x

<em>See Attachment for Graph</em>

5 0
3 years ago
What is the mean of 19 22 25 28 31
Bad White [126]
The answer is 25 add all the numbers together and divide by the number of numbers present hope this helped
7 0
3 years ago
How many points do you get if you make a shot from under the basket? (basketball)
ziro4ka [17]

Answer:

2

Step-by-step explanation:

because you are not behind the three point line

8 0
2 years ago
(-1,-6) and (-3,-8) y=Mx+b
denpristay [2]

Answer:

m = 1, b = -5         y = x -5

Step-by-step explanation:

first find the slope or m

slope is change in y over change in x

-8 - (-6) = -2

-3 - (-1) = -2

-2/-2 = 1

m = 1

y = x + b

use one of the points and solve for b

7 0
3 years ago
Other questions:
  • What is the perimeter and area
    10·2 answers
  • The product of 4 and a number plus 17 is 5
    15·2 answers
  • Point E has a negative x-coordinate, and its y-coordinate is not 0. Where could point E be located on the coordinate plane? Choo
    14·2 answers
  • BRAINLIEST ASAP AND 15 POINTS Sawyer is creating a scaled drawing of the pentagon for his social studies class. The Pentagon is
    14·1 answer
  • What is the missing measure of a triangle with the side length of 19 17 and x
    8·1 answer
  • Real or Irrational?<br> 2.395...
    10·1 answer
  • Sam is rowing a boat away from a dock. The graph shows the relationship
    8·1 answer
  • Sandra scores 12 out of 30 in her maths test. Write this as a fraction in its simplest form.​
    7·1 answer
  • The “strike zone” or distance across home plate is 17 inches. Determine how long a baseball pitched at 90 mph is in the strike z
    13·1 answer
  • Ill give brainliest hurry plssss
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!