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garik1379 [7]
3 years ago
14

Does the quadratic have a maximum or minimum

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0

Answer:

B)max/ opens down

Step-by-step explanation:

Parabola equation:

The equation of a parabola has the following format:

y = ax^2 + bx + c

If a > 0, that is, x² is multiplied by a positive number, the function has a minimum value and the parabola opens up.

If a < 0, that is, x² is multiplied by a negative number, the function has a maximum value and the parabola opens down.

In this question:

y = -x^2 - 2x + 3

From the graph, we already see that it opens down and has a max, and analitically, since a = -1 < 0, this is confirmed. The correct answer is given by option b.

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How many nickels to make 20
Ronch [10]

Answer:

if you're talking 20 cents, then 4, if you're talking dollars, then 400.

tell me pls if you want an explanation.

5 0
2 years ago
Read 2 more answers
Mr.ward and mr. heskey are racing toy cars and Mr. heskey wants to give mr. ward an 8 ft head start because his car is 2 seconds
DiKsa [7]

Answer:

  F.  6s > 4s +8

Step-by-step explanation:

From a reference point at the beginning of the track, Ward's car will be located 4s+8 feet down the track after s seconds. That is, it starts 8 feet down the track, and increases its distance by 4 feet every second.

From the same reference point, Heskey's car will be located 6s feet down the track after s seconds. Its distance starts from zero and is increasing at the rate of 6 feet every second.

For Heskey's distance to exceed Ward's distance you want ...

  6s > 4s +8 . . . . . . matches choice F

6 0
3 years ago
Solve by substitution 3x+y=5 and 2x-y=10
prohojiy [21]
3x+5=2x-10
-2x -2x
X+5=-10
-5 -5
X=-15


3(-15)+y=5
-45+y=5
+45 +45
y=50


2(-15)-y=10
-30-y=10
+30 +30
-y=40
Divide by -1 on both sides
y=-40
8 0
4 years ago
1. 2(4x - 3) - 8 = 4 + 2x<br> Can sb help slove this using PEMDAS ?
velikii [3]

Answer:

x=3

Step-by-step explanation:

1) get rid of the parenthesis by distributing the 2. You will get 8x-6-8=4+2x

2) Now combine like term on each side of the equal sign. You will get 8x-14=4+2x

3) Move the 14 to the right side of the equation making it +14 and move your 2x to the left side of the equation making it -2x. You will get 8x-2x=4=+14

4) calculate each side. You will get 6x=18

5) Divide both sides. You will get x=3

4 0
4 years ago
Kim owes her friend $245 and plans to pay $35 per week. Write an equation of the function that shows the amount Kim owes after x
inysia [295]

245 -35x = amount owed after x weeks

3 0
3 years ago
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