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Lerok [7]
3 years ago
6

Re-write the quadratic function below in Standard Form y= –2(x + 5)(x – 4)

Mathematics
1 answer:
Naddik [55]3 years ago
6 0

Answer:

y = - 2x² - 2x + 40

Step-by-step explanation:

Standard form of a quadratic is y = ax² + bx + c : a ≠ 0

Given

y = - 2(x + 5)(x - 4) ← expand factors using FOIL

  = - 2(x² - 4x + 5x - 20)

  = - 2(x² + x - 20) ← distribute parenthesis by - 2

  = - 2x² - 2x + 40 ← in standard form

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The midpoint of AB is M(3,1).If the coordinates of A are (8,4) what are the coordinates of B
gulaghasi [49]

Answer:

The coordinates of B are (-2 , 9)

Step-by-step explanation:

A (8, 4)

M (3 , -1)

To calculate a midpoint you have to add the corresponding coordinates of each point and divide them by 2

(Ax + Bx) / 2 = Mx

(8 + Bx) / 2 = 3

8 + Bx = 3 * 2

Bx = 6 - 8

Bx = -2

(Ay + By) / 2 = My

( -1 + By) / 2 = 4

-1 + By = 4 * 2

By = 8 + 1

By = 9

The coordinates of B are (-2 , 9)

4 0
4 years ago
At the beginning of football season, Coach Carnes takes inventory of the team equipment to see what he needs. He counts 24 footb
Leviafan [203]

Answer:

13

Step-by-step explanation:

To solve this, lets first find the number of footballs he still needs:

75-24 = 51

Now to find the number of packages, divide by 4, since there are 4 balls per package:

51/4 = 12 Remainder 3

Since there is a remainder, and the Coach MUST have at least 75, then we need to add a package to include the remainder:

12 + 1 = 13 Packages

6 0
3 years ago
Quarter past 7 , what time is it ?
Phoenix [80]
A quarter of an hour is 15 minutes, so a quarter past 7 is 7+15 mins. This gives you:

7:15

Hope this helps and good luck!
3 0
3 years ago
Read 2 more answers
Measurement is the use of numbers according to a standard true or false
Softa [21]

Answer:

True

Step-by-step explanation:

3 0
3 years ago
PLZ HELP BRAINLIEST THANKS AND 20 POINTS ADDED
schepotkina [342]
Circumference=diameter times pi
diameter=12
circumference=12 times pi
we use pi=3.14
circumfernce=12 times 3.14
circumference=37.68 ft
round to tenth
8 is greater than 5 so roundup
37.7ft
3 0
3 years ago
Read 2 more answers
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