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maksim [4K]
2 years ago
5

A spinner has 5 equally sized sections, 2 of which are gray and 3 of which are blue. The spinner is spun twice. What is the prob

ability that the first spin lands on gray and the second spin lands on blue ?
Mathematics
1 answer:
maria [59]2 years ago
7 0

Answer:

6/25

Step-by-step explanation:

P(gray) = 2/5

P(blue) = 3/5

P(1st gray & 2nd blue) = (2/5)*(3/5) = 6/25

As the question already indicated the sequence, so no combination (nCr) should be considered.

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What is the algebraic expression of the difference of 4 times a and b?
vagabundo [1.1K]

Answer:

4(a+b)

Step-by-step explanation:

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3 years ago
a boat travels 252 miles in 13 hours (with a constant speed) How much time will it take traveling 279 miles?
Ilya [14]

Answer: 14.4 h

The speed is : v=\frac{d}{t} =\frac{252}{13} =19.46 miles/h\\

The time it takes to travel 279 miles :

t'=\frac{d}{v} =\frac{279}{19.46} =14.4 hours

4 0
3 years ago
11 halves divided by 7
Tamiku [17]

Answer:

\large\boxed{\dfrac{11}{14}}

Step-by-step explanation:

\dfrac{\frac{11}{2}}{7}=\dfrac{11}{2}\div7=\dfrac{11}{2}\div\dfrac{7}{1}=\dfrac{11}{2}\cdot\dfrac{1}{7}=\dfrac{(11)(1)}{(2)(7)}=\dfrac{11}{14}

4 0
3 years ago
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Penny is counting the days until her grandma comes to visit. There are 98 days left. How many weeks are left until Penny's grand
Burka [1]
98 divided by 7

98/7 = 14

Answer: There are 14 weeks left.
3 0
3 years ago
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Evaluate sec960°.<br> 1. -2<br> 2. - 2 sqrt3/3<br> 3. 2sqrt 3/3<br> 4. 2
Eduardwww [97]

Answer:

-2

Step-by-step explanation:

We want to evaluate;

\sec960\degree

We use the reciprocals of trigonometric ratios to obtain;

\sec960\degree=\frac{1}{\cos960\degree}

The 960 degree angle makes an angle of 60 degree with the positive direction of the x-axis and it is in the 3rd quadrant.

This implies that;

\sec960\degree=\frac{1}{-\cos60\degree}

We use special trigonometric ratios to obtain;

\sec960\degree=\frac{1}{-\frac{1}{2}}

\sec960\degree=-2

7 0
3 years ago
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