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defon
3 years ago
15

Place parentheses and brackets in the expression below so that it equals 18.

Mathematics
1 answer:
Ahat [919]3 years ago
5 0

Answer:

18

Step-by-step explanation:

\{{2}^{3} (4 \div 2)  \}+ 2 \\  \\  =  \{{2}^{3} \times 2 \} + 2 \\  \\  =  {2}^{3 + 1}  + 2 \\  \\  =  {2}^{4}  + 2 \\  \\  = 16 + 2 \\  \\  = 18

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Which statements about right triangles and hexagons are true?
Goryan [66]

Hello :) = Merhaba :)

Answer:

<h3><u><em>A and C</em></u></h3>

Step-by-step explanation:

Let's look at the chances:

A) Both shapes are polygons.

This answer is true. Because the triangle and the hexagon are polygons.

B) The first shape has the same number of sides as the second shape.

This answer is false. Because three sides of the triangle have six edges of the hexagon.

C) Both shapes have all sides of equal length.

This answer is true. Because the smooth polygons have equal edges.

NOTE: I'm not American. I'm just a Turk who wants to help you. So if my sentences are wrong, please forgive me.

<em><u>#Cevapistevereyim</u></em>

Başarılar :) = Achievements :)

8 0
3 years ago
The weights of boxes of a certain brand of pasta follow an approximately normal distribution with a mean of 16 ounces and a stan
Lina20 [59]

2.5% of the boxes have weights that are more than 2 standard deviations below the mean.

<h3>What is empirical rule?</h3>

The empirical rule states that for a normal distribution, 95% of the values are within two standard deviations from the mean.

Given mean of 16 ounces and a standard deviation of 0.5 ounces.

Hence:

95% is within 16 ± 2(0.5) = (15, 17)

number above 2 standard deviation = 5%/2 = 2.5%

2.5% of the boxes have weights that are more than 2 standard deviations below the mean.

Find out more on empirical rule at: brainly.com/question/10093236

#SPJ1

5 0
2 years ago
Is this is a math question?
N76 [4]
Yes it is
it says mathematics 5 points
7 0
3 years ago
c. Using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually
dybincka [34]

Answer:

True

Step-by-step explanation:

If two events X and Y are mutually exclusive,

Then,

P(X∪Y) = P(X) + P(Y)

Let A represents the event of a diamond card and B represent the event of a heart card,

We know that,

In a deck of 52 cards there are 4 suit ( 13 Club cards, 13 heart cards, 13 diamond cards and 13 Spade cards )

That is, those cards which are heart can not be diamond card,

⇒ A ∩ B = ∅

⇒ P(A∩B) = 0

Since, P(A∪B) = P(A) + P(B) - P(A∩B)

⇒ P(A∪B) = P(A) + P(B)

By the above statement,

Events A and B are mutually exclusive,

Hence, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event is a true statement.

4 0
4 years ago
Find the first five terms of the sequence described by the following recursive formula: an = an – 1 + an – 2 where a1 = 1.2 and
Sedaia [141]
The first if a twisted version of a Fibonacci sequence :P

If a1=1.2 and a2=2.3 and a(n)=a(n-1)+a(n-2)

a3=3.5, a4=5.8, a5=9.3

So the first five terms are:  1.2, 2.3, 3.5, 5.8, 9.3

The second is another modified Fibonacci sequence...

If a3=-5 and a4=3 then:

3=-5+a2, a2=8

-5=8+a1, a1=-13

a5=-5+3=-2

a6=-2+3=1

So the first six terms are -13, 8, -5, 3, -2, 1
3 0
4 years ago
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