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lapo4ka [179]
3 years ago
5

There are 2 brown marbles, 3 black marbles, and 4 gold marbles in a bag. What is the probability of drawing 2 brown marbles if t

he first is replaced after it is drawn?
Mathematics
1 answer:
prohojiy [21]3 years ago
5 0

Answer:

.049 (2sf)

Step-by-step explanation:

\frac{2}{9}  \times  \frac{2}{9}  = 0.4938

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a vehicle factory manufactures cars. The unit cost C (the cost in dollars to make each car) depends on the number of cars made.
timofeeve [1]

Answer:

8,567

Step-by-step explanation:

Given the cost function expressed as C(x)=0.7x^2- 462 x + 84,797

To get the minimum vaklue of the function, we need to get the value of x first.

At minimum value, x = -b/2a

From the equation, a = 0.7 and b = -462

x = -(-462)/2(0.7)

x = 462/1.4

x = 330

To get the minimum cost function, we will substitute x = 330 into the function C(x)

C(x)=0.7x^2- 462 x + 84,797

C(330)=0.7(330)^2- 462 (330)+ 84,797

C(330)= 76230- 152460+ 84,797

C(330) = 8,567

Hence the minimum unit cost is 8,567

7 0
3 years ago
Look at the screenshot
melomori [17]

Answer:

4

Step-by-step explanation:

the graph goes from aprox (0, 1) to (2, 8)

3 0
3 years ago
If the equation y=1/2x+2 is changed to y=3x+2, what will be true about the graph of the equation
anygoal [31]
The first equation will go up by 2.5 and if it were changed to y=3X+2 it will go up by 8
6 0
3 years ago
Read 2 more answers
Please answer in a step by step explanation
Marizza181 [45]

Answer:

Step-by-step explanation:

its a

6 0
3 years ago
If the side length is increased by a factor of 3, how much larger is the perimeter of a face of the new cube?
Luden [163]
The <span>perimeter of a face of the new cube is 8 times larger than the previous cube.
</span>Let us say, the side of cube before increase is "a"
Then perimeter of the cube = 12a ,

because the cube has 12 sides.
And perimeter of a face of cube = 4a
Now, the side length is increased by factor of 3 i.e. new side is 3a
Thus, perimeter of new face of the cube = 4*3a = 12a

Therefore, the new perimeter is larger by = 12a - 4a = 8a 
6 0
3 years ago
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