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madam [21]
3 years ago
7

40 red marbles 10 yellow 50 green probability that it is either red or green​

Mathematics
2 answers:
Mkey [24]3 years ago
3 0

Answer:

90/100

It says I don't cave enough charterers so i am writing this

Hatshy [7]3 years ago
3 0

Answer:

90/100

Step-by-step explanation:

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Question#10 will give brainliest!
Amiraneli [1.4K]

Answer:

B. isolate the x^{2} by using inverse operations.

Step-by-step explanation:

Hope this helps! Brainliest would be much appreciated! Have a great day! :)      

6 0
3 years ago
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A hollow ball is made of rubber that is 1 centimeter thick. The ball has a radius of 5 centimeters at the outside surface.
serious [3.7K]
Given that the ball has a thickness of 1 cm and the radius at the outside is 5 cm, thus the radius from inside is 5 - 1 = 4cm.

The <span>approximate volume of rubber used to make the ball is given by the volume of the ball at the outside surface minus the volume of the ball at the inside surface.

i.e.
</span>
<span>Volume\ of\ rubber= \frac{4}{3} \pi\left(5^3-4^3\right) \\  \\ = &#10;\frac{4}{3} \pi(61)= \frac{244}{3} \pi\approx255.5\ cm^3</span>
4 0
3 years ago
Read 2 more answers
Three students have started a fence-painting business. Working together, Pragnesh and Qazi can paint the fence in 12 hours. Simi
Mila [183]

Step-by-step explanation:

P and Q can do the whole work in 12 hours.

so, in 1 hour they can do 1/12.

P and R can do in 1 hour 1/15.

Q and R can do in 1 hour 1/20.

mathematically that looks like

P + Q = 1/12

P + R = 1/15

Q + R = 1/20

P + Q + R = 1/x

together they can do 1/x of the work in 1 hour.

it will take them x hours, if all 3 worked together.

from the first equation we get

P = 1/12 - Q

that gives us in the second equation

1/12 - Q + R = 1/15

R = 1/15 - 1/12 + Q = 4/60 - 5/60 + Q = Q - 1/60

but from the 3rd equation we get also

R = 1/20 - Q

so,

Q - 1/60 = 1/20 - Q

2Q = 1/20 + 1/60 = 3/60 + 1/60 = 4/60

Q = 2/60 = 1/30

R = Q - 1/60 = 2/60 - 1/60 = 1/60

P = 1/12 - Q = 1/12 - 2/60 = 5/60 - 2/60 = 3/60 = 1/20

so, we get for the sum :

P + Q + R = 3/60 + 2/60 + 1/60 = 6/60 = 1/10

that means in 1 hour they can do together 1/10 of the work.

so, together they will need 10 hours to paint the fence.

3 0
2 years ago
The graph shows the axis of symmetry for a quadratic function f(x).
Sergeeva-Olga [200]

Answer:

f(x) = (x - 4)^2

Step-by-step explanation:

When plotted upon a graph, the function passes through the line. You can find the vertex by using the formula: f(x) = a(x - h)^2 + k

h = 4, meaning the vertex is (4, 0)

Hope this helps!

6 0
4 years ago
Read 2 more answers
Score: 0 of 1 pt
jonny [76]

Answer:

See attachment for graph

Step-by-step explanation:

Given

y = x^2 - 3

Required

The graph of the equation

First, we determine the range of y

x = -3

y = x^2 - 3 \to y = (-3)^2 - 3 = 6

(-3,6)

x = -2

y = (-2)^2 - 3 = 1

(-2,1)

x = -1

y = (-1)^2 - 3 = -2

(-1,-2)

x=0

y = 0^2 - 3 = -3

(0,-3)

x = 1

y= 1^2 - 3 = -2

(1,-2)

x = 2

y =2^2 - 3 = 1

(2,1)

x = 3

y = 3^2 - 3 = 6

(3,6)

<em>See attachment for graph</em>

7 0
3 years ago
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