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vladimir2022 [97]
3 years ago
7

Two dice are rolled one after another. Construct a sample space and determine the probability that the sum of the dots on the di

ce total a number greater than 9 if the second die is a 5. The probability that the sum of the dots on the dice is a number greater than 9 if the second die is a 5 is nothing.
​(Type an integer or a simplified​ fraction.)
Mathematics
1 answer:
larisa86 [58]3 years ago
4 0

this answer will be 55% ok

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8
lyudmila [28]
54% because there is a total of 100 and you have already taken 46 of that. And we have not been given a third factor
3 0
3 years ago
An attacker at the base of a castle wall 4 m high throws a rock straight up with speed 7.5 m/s from a height of 1.5 m
Sergeu [11.5K]

Answer:

a) Yes, b) v\approx 2.686\,\frac{m}{s}, c) v_{o} \approx 7.002\,\frac{m}{s}

Step-by-step explanation:

a) The maximum height reached by the rock is:

\Delta y = \frac{\left(0\,\frac{m}{s} \right)^{2}-\left(7.5\,\frac{m}{s} \right)^{2}}{2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)}

\Delta y = 2.868\,m

y = 1.5\,m + 2.868\,m

y = 4.368\,m

Yes, the rock will exceed the top of the wall.

b) The speed when the rock reaches the top of the wall:

v = \sqrt{\left(7.5\,\frac{m}{s} \right)^{2}+2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (4\,m-1.5\,m)}

v\approx 2.686\,\frac{m}{s}

c) The initial speed required so that stone does not exceed the top of the wall is:

v_{o} = \sqrt{\left(0\,\frac{m}{s} \right)^{2}-2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (4\,m-1.5\,m) }

v_{o} \approx 7.002\,\frac{m}{s}

8 0
4 years ago
CAN U HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
KonstantinChe [14]

Perpendicular Bisector

________________________________

Angle Bisector

8 0
3 years ago
Sue wants to plan a meal with 71 grams of fat and 1755 calories. If hot dogs have 13 grams of fat and 145 calories each and if b
Lena [83]

Answer:

Sue must use 3 hotdogs and 4 half-cup serving of baked beans.

Step-by-step explanation:

Let the number of hot dogs be represented by h

Let the number of baked beans be represented by b

Hot dogs have 13 grams of fat and 145 calories each

Baked beans have 8 grams of fat and 330 calories per half cup serving

Sue wants to plan a meal with 71 grams of fat and 1755 calories.

Grams of Fat from Hotdog + grams of fat from baked beans=71

13h+8b=71....(I)

Similarly,

Calories from hot dog + Calories from baked beans=1755

145h+330b=1755....(II)

We then solve Equations (I) and (II) simultaneously.

13h+8b=71....(I)

145h+330b=1755....(II)

Multiply equation 1 by 145 and equation 2 by 13

1885h+1160b=10295

1885h+4290b=22815

Subtracting

-3130b=-12520

b=4

Substitute b=4 into (I)

13h+(8X4)=71

13h=71-32

13h=39

h=3

Sue must use 3 hotdogs and 4 half-cup serving of baked beans.

4 0
4 years ago
Please help! NO LINKS PLESE!
vodka [1.7K]
C. ax^2+bx+c=1

please correct me if im wrong!! have a great day!! :)
5 0
3 years ago
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