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katrin [286]
3 years ago
7

A pyramid has a square base that is 160 m on each side. What is the perimeter of the base in kilometers? Question 19 options:

Mathematics
1 answer:
vekshin13 years ago
8 0

Answer:

0.64 kilometres

Step-by-step explanation:

<u>Step 1: Find the perimeter in metres</u>

Perimeter of square = 4 x (Length)

Perimeter = 4 (160)

Perimeter = 640 metres

<u>Step 2: Convert from metre to kilometre</u>

1 km = 1000 m

x km = 640 m

<em>Cross multiply</em>

1000x = 640

x = 0.64 kilometres

Therefore, the perimeter of the square base is 0.64 kilometres.

!!

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What expression is equivalent to 7 3/2 ?
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Answer:

17/2

Step-by-step explanation:\

7 3/2 is equal to 17/2 because 2 x 7 is 14 and 14+3 is 17 and you keep the dem so its 17/2 and you cant simplify so it just becomes 7 3/2. i hope this helped.

8 0
2 years ago
Negative numbers have positive square roots.<br> O A. True<br> B. False
musickatia [10]

Answer:

false

Step-by-step explanation:

7 0
3 years ago
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What is the slope of a horizontal line?<br><br> 0<br><br> undefined<br><br> 1<br><br> -1
LenaWriter [7]

the slope of a horizontal line is zero

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3 years ago
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Leon is using the recipe shown.
stira [4]

He will use 11 and half cups of olive oil to use with 1 teaspoon of cinnamon.

Step-by-step explanation:

Given,

Olive oil used in recipe = 23 cups

Cinnamon used in recipe = 2 teaspoons

Ratio of cinnamon to olive oil in recipe = 2:23

Cinnamon Leon has = 1 teaspoon

Let x be the olive oil.

Ratio of available cinnamon to olive oil = 1:x

Using proportion;

Ratio of cinnamon to olive oil in recipe :: Ratio of available cinnamon to olive oil

2:23::1:x

Product of extreme = Product of mean

2*x=23*1\\2x=23

Dividing both sides by 2;

\frac{2x}{2}=\frac{23}{2}\\x=11.5

11.5 can also be written as 11\frac{1}{2}

He will use 11 and half cups of olive oil to use with 1 teaspoon of cinnamon.

Keywords: ratio, proportion

Learn more about ratios at:

  • brainly.com/question/6541303
  • brainly.com/question/6530759

#LearnwithBrainly

3 0
3 years ago
A standard roulette wheel has 38 numbered slots for a small ball to land in: 36 are marked from 1 to 36, with half of those blac
Anastasy [175]

Answer:

The expected value of betting $500 on red is $463.7.

Step-by-step explanation:

There is not a fair game. This can be demostrated by the expected value of betting a sum of money on red, for example.

The expected value is calculated as:

E(G)=\sum p_iG_i

being G the profit of each possible result.

If we bet $500, the possible outcomes are:

- <em>Winning</em>. We get G_w=$1,000. This happens when the roulette's ball falls in a red place. The probability of this can be calculated dividing the red slots (half of 36) by the total slots (38) of the roulette:

P(R)=R/T=18/38\approx0.4737  

- <em>Losing</em>. We get G_l=$0.  This happens when the ball does not fall in a red place. The probability of this is the complementary of winning, so we have:

P(not \,R)=1-P(R)=1-18/38=20/38\approx 0.5263

Then,  we can calculate the expected value as:

E(G)=\sum p_iG_i=p_wG_w+p_lG_l=0.4637*1,000+0.5263*0=463.7

We expect to win $463.7 for every $500 we bet on red, so we are losing in average $36.3 per $500 bet.

4 0
3 years ago
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