3 years ago

Which of the follow is a subset of the set E which contains all even integers?

1 answer:

5 0

Answer:

The natural numbers and the whole numbers are both subsets of integers. In other words, a rational number is a number that can be written as one integer over another.

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If 6 coins are flipped, find the probability that there is at least 1 heads.<br><br>

astraxan [27]

Answer:

Step-by-step explanation:

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4 years ago

A circular city plaza is surrounded by a row of bricks. The area of the plaza is 1,520 square meters. How long is the row of bri

Korolek [52]

Answer:

138 meters

Step-by-step explanation:

step 1

Find the radius of the circular city plaza

The area is equal to

$A=\pi r^{2}$

we have

$A=1,520\ m^2$

$\pi =3.14$

substitute

$1,520=(3.14)r^{2}$

solve for r

$r^2=1,520/3.14\\r=22\ m$

step 2

we know that

To find out how long is the row of bricks, determine the circumference of the circular city plaza

The circumference is equal to

$C=2\pi r$

we have

$r=22\ m$

$\pi =3.14$

substitute

$C=2(3.14)(22)=138\ m$

8 0

4 years ago

If the angles<br> are represented in degrees, find both angles:<br> sin(x + 7) = cos(4x + 8)

ValentinkaMS [17]

Answer:

x = -1/3

Step-by-step explanation:

We have,

sin(x + 7) = cos(4x + 8)

We need to find the value of x.

We know that,

sin(90-x) = cosx

So,

sin(90-(x + 7)) = cos(4x + 8)

cos(x+7) = cos(4x + 8)

i.e.

(X+7) = (4x+8)

7-8 = 4x-x

-1 = 3x

x = -1/3

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3 years ago

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4 years ago

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Here is a tree diagram showing the sample space for two independent events. How many outcomes are there for the compound event?

katrin [286]

The answer is because of the 4 outcomes and 2 different outcomes of each.

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3 years ago