Whatis the probability that the card drawn is grey, given that an odd-numbered card is drawn?

Mathematics

2 answers:

attashe74 [19]3 years ago

7 0

1/6 because one of the cards out of all 6 is gray and odd.

Eduardwww [97]3 years ago

3 0

Probability is 1/3! this is because the out off the odd numbers, only one is grey.

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What is the ratio of 15/45 to 45/135?

Natasha_Volkova [10]

15/45 is a 1-3 ratio and the 45/135 is also a 1-3 ratio

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3 years ago

The length of ZX is 2 units. What is the perimeter of triangle XYZ? 5 + + 2 units 5 + 3 units 5 + + 2 units 10 + 2 units

Shtirlitz [24]

Answer:

B) 5 + 3√5 units

Step-by-step explanation:

The length of ZX is 2√5 units. What is the perimeter of triangle XYZ?

A) 5 +√3 + 2 √5 units

B) 5 + 3√5 units

C) 5 + √6 + 2√5 units

D) 10 + 2√5 units

From the diagram attached, point X is at (-1, 4), Y(3, 1), Z(1, 0).

The distance between two point

$O(x_1,y_1)\ and\ A(x_2,y_2)\ is\ given\ as:\\\\OA=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}$

The lengths of the sides of the triangle are:

$|XY| = \sqrt{(3-(-1))^2+(1-4)^2}=\sqrt{25} =5\ unit\\ \\|XZ|= \sqrt{(1-(-1))^2+(0-4)^2}=\sqrt{20} =2\sqrt{5} \ unit\\\\|YZ|= \sqrt{(1-3)^2+(0-1)^2}=\sqrt{5} \ unit$

The perimeter of the triangle is the sum of all the sides, i.e.

Perimeter = |XY| + |YZ| + |XZ| = 5 + 2√5 + √5 = 5 + 3√5

7 0

3 years ago

Dante bought a new graduated cylinder for his chemistry class. It holds 1,345.6 milliliters of liquid. If the cylinder has a rad

pentagon [3]

The formula for a cylinder's volume is
V = π r² h
V = 1345.6
π = 3.14
r = 5.8 cm

1345.6 = 3.14 * 5.8^2 h Multiply 3.14 and 5.8^2 together.
1345.6 = 105.6 h Divide by 105.6
1345.6 / 105.6 = h
h = 12.73 cm <<<< answer.
I don't see anything wrong with what I've done but I don't see the answer anywhere. Estimating 1345 can be rounded to 1300.
pi * 5.8^2 = 3 * 35 = 105 which we could round to 100.

1300 / 100 about = 13 So the answer should be in the region of 100.

I cannot see any reason to believe there is an error. If there is something that has not been copied correctly, I'd like to know what it is.

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3 years ago

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tresset_1 [31]

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4 years ago

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CaHeK987 [17]

Answer:

Step-by-step explanation: