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matrenka [14]
3 years ago
9

Ion understand this at all so can you guys help me pls.

Mathematics
1 answer:
natita [175]3 years ago
4 0
You are plugging in the numbers to get your answer
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Math question down below
laila [671]

Answer:

4

Step-by-step explanation:

use the x's and y's in this...

y-y over x-x

to get answer.

5 0
3 years ago
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The ratio of blue tacks to red tacks on the bulletin board is 3 to 5. there are 50 red tacks. how many blue tacks are on the boa
natulia [17]
3:5=x:50

Therefore 5 ×x = 50

x = 10

Therefore 3 × 10 = 30

therefore 30 blue pens

proof = 30 blue + 50 red= 3+ 5

therefore 80 = 8x

8 0
4 years ago
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The funcilon f(x) = -(x + 5)(x +
Arte-miy333 [17]

Answer:

all numbers less than or equal to -3.

Step-by-step explanation:

The original equation shown is in "root form", a form of a quadratic equation showing where it hits the x-axis. This form does not show, like a "standard form" quadratic equation does, the vertex of the quadratic. The standard form equation is shown below.

ax^2+bx+c

  1. a is a constant showing the vertical stretch or compression of the quadratic. Also it can show if the function is flipped based on if it has a negative symbol at the front.
  2. b isn't very important when graphing unless you want to convert the equation to root-form.
  3. c is the height of the vertex. This is very important to know for this question because the vertex is either the minimum or maximum of the quadratic.

If we want to solve this equation showing all our work, the best bet is converting our equation from root-form to standard-form, like so:

f(x)=-(x+5)(x+1)

  • distribute x and 5 into (x+1). Then take this and distribute the negative sign.

f(x)=-x^2-5x-x-5\\f(x)=-x^2-6x-5

  • This is our standard-form of the quadratic. Now we just need to determine the range of y values it has.
  • <em>Note: The answers are wrong based on the c value I have for this equation, so I'm going to just give the answer closest to this one.</em>

Based on the properties of a standard form equation I gave earlier, this equation will look like an upside down "U" with a maximum value of -5. Therefore (based on the <em>italicized </em>text above), the range of y values for this equation must be "all real numbers less than or equal to -3".

P.S: Message me with any questions or fixes I should make to my math.

7 0
3 years ago
A football is kicked toward the goal. The height of the ball is modeled by the function h(t) = -16t2 + 64t where t equals the ti
Scrat [10]
H(t) = -16(t^2) + 64t

roots:

0 = -16t^2 + 64t
0 = t^2 - 4t
0 = t(t-4)
t=0 and t =4

The symmetry axis is at the middle of the two roots: t = (0+4)/2

That time (t=2)  is what it takes the object to reach the maximum height.

Answer: t = 2; it takes 2 seconds to reach the maximum height and 4 seconds to fall back to the ground
8 0
3 years ago
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The following equation will have two solutions, y = x2 - 2x - 15?<br> True<br> False
motikmotik
The answer would be False.
3 0
3 years ago
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