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Flura [38]
2 years ago
11

A bowl contains 7 white pebbles and 11 black pebbles. A pebble is chosen and not replaced, then another pebble is picked. What i

s the
probability that the first one is a white pebble and the second one a black pebble?
O a
7
18
Ob
11
18
Ос
11
17
Od
77
306
Mathematics
1 answer:
LuckyWell [14K]2 years ago
7 0

Answer:

17 because 2 is taken from 18 and 18-2=16 but 17 and 17 is close to 16

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Determine the intercepts of the line that correspond to the table of values.
insens350 [35]
First find the slope/rate of change of the table. Find the difference between the intervals of the x and y values of the table. Each time the x value decreases by 2 the y value decreases by 4. To find the rate of change divide the -4 by -2 to get 2 as the slope.

Set up an equation using values from the table to figure out the y intercept or b value.
-6=-4(2)+b
-6=-8+b. Add 8 from both sides
both sides to get b
2=b
The y intercept is (0,2)

The equation of the line is Y=2x+2

Plug in 0 for y into the lines equation to get the x intercept

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-1=x

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3 0
3 years ago
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a 64 gallon tank contains 45 gallons of oil.How many gallons are removed if 4/5 of this quantity is sold? Please be precise &amp
vfiekz [6]
In the given question it is already mentioned that a 64 gallon tank contains 45 gallons of oil. Out of the 45 gallons 4/5 th of the quantity is sold. It can be said that the full tank capacity of 64 gallons is of no use to the problem.
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Quantity of oil removed = (4/5) * 45 gallons
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6 0
3 years ago
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Alex787 [66]
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5 0
3 years ago
3 lines are shown. A line with points A, F, D intersects a line with points B, F, E at point F. A line extends from point F to p
Kryger [21]

Answer:

∠ DFC = 80°

Step-by-step explanation:

See the attached figure.

Since BFE is a straight line so, ∠ BFA + ∠ AFE = 180°

Now, ∠ AFE is given to be 125°.

So, ∠ BFA = 180° - 125° = 55°

Now, AFD is a straight line. So, ∠ BFA + ∠ BFC + ∠ DFC = 180°

⇒ 55° + 45° + ∠ DFC = 180° {Since, ∠ BFC is given to be 45°}

⇒ ∠ DFC = 180° - 55° - 45° = 80° (Answer)

4 0
3 years ago
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In 2014, a toy store sold 11,831 stuffed animals. In 2015, the toy store sold 13,170 more stuffed animals than it did in 2014. T
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