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3 years ago

I have 45 points...

Mathematics

2 answers:

algol133 years ago

6 0

The probability of drawing a D does not affect the probability of drawing A so the events are independent so you just have to multiply the probabilities

There are 3 D out of 7
There are 2 A out of 7(because we put the card back)

3/7 * 2/7 =6/ 49

SOVA2 [1]3 years ago

5 0

Answer:

3/7 and 2/7.

Step-by-step explanation:

P(e) = No of favourable outcomes/ Total no of possible outcomes.

total outcomes=3+1+1+2=7.

(1) p(D) = 3/7.

(2)p(A)=2/7

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Step-by-step explanation:

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4 years ago

The figure is made up of a cylinder and a sphere which has been cut in half. The radius of each half sphere is 6 mm. What is the

marshall27 [118]

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3 years ago

You're uncle is having a new roof installed in his house. The roof is a square pyramid. The side length of the base of the roof

Kaylis [27]

Answer:

The height of the roof in his house is 72.43 ft.

Step-by-step explanation:

The volume of square pyramid is :

$V=\frac13 Bh$

B= area of the base.

h= the height.

Given that,

The roof is a square pyramid in shape. The volume of the roof is 18929.333 cubic feet.

The side length of the base of the roof is 28 feet.

Since the base of the roof is square in shape.

The area of the square is = side²

The area of the base is =(28×28) square feet

=784 square feet

Assume the height of the roof be h ft.

Then, the volume of the roof is = $\frac13 Bh$

$=\frac13 \times 784 \times h$ square feet.

According to the problem,

$\frac13 \times 784 \times h= 18929.3333$

$\Rightarrow h=\frac{18929.3333\times 3}{28}$

$\Rightarrow h\approx 72.43$ ft.

The height of the roof in his roof is 72.43 ft.

8 0

3 years ago

Today you will need to look at the following problem and explain what Susan did incorrectly. You can explain what she did incorr

Musya8 [376]

Answer:

see below

Step-by-step explanation:

The equation of a circle can be written as

( x-h) ^2 + (y-k) ^2 = r^2

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( x - 3)^2 + ( y - -4)^2 = 6^2

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Susan did not use the formula correctly.

It is x-h and y-k so she needed to rewrite to get the equation in the proper form

Also the radius is r^2 not r/2

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3 years ago

If ∠G ≅ ∠H, then ∠H ≅ ∠G. name the property

Andrei [34K]

Answer:

Property of Symmetry

Step-by-step explanation:

The symmetric property of equality tells us that both sides of an equal sign are equal no matter which side of the equal sign they are on. Remember it states that if x = y, then y = x.

6 0

4 years ago