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2 years ago

Help me pleaseeeeeee

Mathematics

1 answer:

Irina18 [472]2 years ago

6 0

Answer: The answer is D, obtuse angles must be larger than 90 degrees

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A room 9.5 m long and 6 m wide is surrounded by a verandah 1.25 m wide. Calculate the cost of

oksano4ka [1.4K]

Answer:

Step-by-step explanation:

Area of room = 6×9.5=57m2

Area of room including verandah = 12×8.5=102m2

So area of verandah = 102−57=45m2

So cost of cementing the floor of this verandah = 45×80=3600rupees

5 0

3 years ago

what is the probability of drawing two yellow marbles if the first one is placed back in the bag before the second draw. give yo

Svetach [21]

Answer:

1:25

Step-by-step explanation:

There are 2 out of 10 yellow marbles.

2/10 simplified is 1/5

Sorry had to edit its multiplied by each other so its actually 1:25

5 0

3 years ago

Eric's class consists of 12 males and 16 females. If 3 students are selected at random, find the probability that they

Reptile [31]

Answer:

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

Step-by-step explanation:

Let 'M' be the event of selecting males n(M) = 12

Number of ways of choosing 3 students From all males and females

$n(M) = 28C_{3} = \frac{28!}{(28-3)!3!} =\frac{28 X 27 X 26}{3 X 2 X 1 } = 3,276$

Number of ways of choosing 3 students From all males

$n(M) = 12C_{3} = \frac{12!}{(12-3)!3!} =\frac{12 X 11 X 10}{3 X 2 X 1 } =220$

The probability that all are male of choosing '3' students

$P(E) = \frac{n(M)}{n(S)} = \frac{12 C_{3} }{28 C_{3} }$

$P(E) = \frac{12 C_{3} }{28 C_{3} } = \frac{220}{3276}$

P(E) = 0.067 = 6.71%

<u><em>Final answer</em></u>:-

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

3 0

3 years ago

Start solving #2 with the substitution method

Brums [2.3K]

Answer:

A=3, B =3, C = 3

Step-by-step explanation:

9/3 (the letters) = 3 Each

3 - 24 - 3 = -27

2a = 6

6 - 3 + 3 = 6

A, b, c, all equal 3.

7 0

3 years ago

You can represent the measures of an angle and its complement as x °and (90 - x). Similarly, you can

Tanzania [10]

Answer:

33°
90° -J°

Step-by-step explanation:

If x represents the measure of the angle, its complement is 90-x. The problem statement tells us ...

x +24 = 90 -x

2x = 66 . . . . . add x-24

x = 33 . . . . . . divide by 2

The measure of the angle is 33°.

Using J for x in the given complement relation:

The measure of the complement of J° is (90 -J)°.

5 0

2 years ago