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densk [106]
3 years ago
12

Please help me on these ones lol

Mathematics
1 answer:
TEA [102]3 years ago
5 0
3)
f(x) =(x+1)/4
so
f(6a) = (6a+1) / 4
f(6a) =3/2(a) + 1/4

8)
f(x) =(x+1)/4 = 0
x + 1 =0
x = -1

answer
x = -1 makes f(x) = 0

9)
(x+1)/4 >= 10
x + 1 >= 40
x >= 39

Answer
Domain is any number greater or equal 39 (x >= 39)
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Hello!

As we are looking for the opposite side and hypotenuse, we will use the sine.

sin30=1/2

This gives us the equation below.

1/2= 5/x

1/2x=5

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Therefore, x=10.

I hope this helps!

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maria [59]

Answer:

The area of each figure is:

  • <u>Area of the rectangle = 10 square units.</u>
  • <u>Area of the triangle = 10 square units.</u>
  • <u>Area of the figure = 20 square units.</u>

Step-by-step explanation:

To find the area of that figure, first, we're gonna find the area of the rectangle and next the area of the triangle, to make this we need to identify the measurement of each one, the rectangle has 2 units wide and 5 units high, then, we use the next formula:

  • Area of a rectangle = width * height
  • Area of a rectangle = 2 units * 5 units
  • <u>Area of a rectangle = 10 square units</u>

Now, we identify the measurements of the triangle (base = 4 units, height = 5 units) and we use the formula:

  • Area of a triangle = (base * height) / 2
  • Area of a triangle = (4 units * 5 units) / 2
  • Area of a triangle = (20 square units / 2
  • <u>Area of a triangle = 10 square units</u>

And we obtain the area of the whole figure when we add the two areas:

  • Area of the figure = area of the triangle + area of the rectangle
  • Area of the figure = 10 square units + 10 square units
  • <u>Area of the figure = 20 square units</u>.

As you can see, <u><em>the area of the picture is 20 square units</em></u>.

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Answer:

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Step-by-step explanation:

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3 years ago
HELP WILL MARK BRAINLIEST!!
Kay [80]

Answer:

A jar contains 5 red, 4 blue, and 3 yellow marbles.

The probability of pulling a red marble, then pulling a blue marble, without replacement would be:

P = 5/(5+4+3) x 4/(5+4+3-1) = 5/12 x 4/11 = 0.15 = ~0.2

Hope this helps!

:)

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