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Vadim26 [7]
3 years ago
8

Answer to 24 pls and thanks :D ik its super simple but im not very good at this and i forgot how to do it, and you guys get like

free points so win win :p
Mathematics
1 answer:
iogann1982 [59]3 years ago
8 0
There is no picture given for us to answer the question!
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Find the disciminant of the quadratic equation: <br> <img src="https://tex.z-dn.net/?f=4k%5E2%2B8k%2B4%3D0" id="TexFormula1" tit
DochEvi [55]

here

  • a=4
  • b=8
  • c=4

Discriminant

  • D=b²-4ac
  • D=8²-4(4)(4)
  • D=64-4³
  • D=64-64
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4 0
1 year ago
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A store pays $24 for a jewelry box and marks the price up by 20%. What is the amount of
Ratling [72]

Answer:

$4.8

Step-by-step explanation:

$24×20/100=$4.8

7 0
2 years ago
What is the axis of symmetry of the function f(x)= -(x+9)(x-21)
Vinil7 [7]

Answer:

The axis of symmetry is x = 6

Step-by-step explanation:

To find this, first find the two x-intercept values and then take the average. This will always be the line of symmetry.

x + 9 = 0

x = -9

x - 21 = 0

x = 21

Now take the average of these two numbers.

(-9 + 21)/2

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6

6 0
3 years ago
Find 3 consecutive odd integers such that 4 times the sum of the first two is 62 less than the product of -30 and the third.
lorasvet [3.4K]

Answer:

Look below

Step-by-step explanation:

Pls, choose me as brainliest!

7 0
2 years ago
Can someone please help me I really need help please help me
scZoUnD [109]

Answer:

18.87 square cm.

Step-by-step explanation:

The area of the rectangle will be (4 + 4) * 4, since the length of the rectangle would be the diameter of the circle, and the width of the rectangle would be the radius. (4 + 4) * 4 = 8 * 4 = 32 square cm.

Then, we can calculate the area of the semicircle. The area of a circle is pi * r^2, so the area of a semicircle will be half of that. pi * (4^2) / 2 = pi * 16 / 2 = 8pi. 8 * 3.14159265 = 25.1327412 square cm.

The shaded area of the middle of the shape will then be 32 - 25.1327412 = 6.8672588 square cm.

The two triangles will have the same area. Their bases will be 14 minus the diameter of the circle, then divide that by 2 to get each separate base. 14 - 8 = 6 / 2 = 3. The heights of the triangles will be the radius of the circle, or 4 cm.

1/2 * 3 * 4 = 1/2 * 12 = 12/2 = 6. That is the area of one triangle, so the area of both triangles would be 6 * 2 = 12 square cm.

6.8672588 + 12 = 18.8672588, or 18.87 square cm.

Hope this helps!

3 0
2 years ago
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