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3 years ago

Please help me answer and explain number 55

Mathematics

1 answer:

melamori03 [73]3 years ago

6 0

Answer:

Step-by-step explanation:

An operation of two real numbers is defined by the rule

$a\bigotimes b=b^a+2ab$

Calculate $2\bigotimes (1\bigotimes 3).$ First evaluate the expression in brackets:

$1\bigotimes 3=1^3+2\cdot 1\cdot 3=1+6=7$

Now,

$2\bigotimes (1\bigotimes 3)=2\bigotimes 7=2^7+2\cdot 2\cdot 7=128+28=156$

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Find the equation of the line through point (-7,2) and parallel to y=2/5x-1/2

Vaselesa [24]

Answer:

y = 2/5x + 24/5

*View graph to see the lines*

Step-by-step explanation:

y = 2/5x - 1/2

Parrel lines have the same slope

y = mx + b

y = 2/5x + b

2 = 2/5(-7) + b

2 = -14/5 +b

5(2 = -14/5 +b)

10 = -14 + 5b

+14 +14

24 = 5b

/5 /5

24/5 = b

y = 2/5x + 24/5

Hope this helps!

6 0

2 years ago

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Leonard owns a business earning $37,800 in profits. These profits are appreciating at about 2.3% each year. What are Leonard's p

satela [25.4K]

Answer:

B. $45341.60

Step-by-step explanation:

Given:

Initial profit = $37800
Rate of appreciation = 2.3% per year

The equation for this:

$P(t) = 37800*(1 + 0.023)^t = 37800*1.023^t$

Find the value of P(8):

$P(8) = 37800*1.023^8 = 45341.60$

Correct choice is B

3 0

3 years ago

You put $100 in an account that pays 5% interest yearly.

slavikrds [6]

Answer:

In a year, $105

In a decade, $150

In a century, $600

In a milleniun, $5100

Step-by-step explanation:

The formula is very simple: Multiply by 5 each year, and then you add it to the $100

8 0

3 years ago

a game consists of randomly choosing a bag (labelled 1, 2 or 3) out of a choice of 100, and then again randomly, picking a ball

Anton [14]

Answer:

hello your question has some missing information attached below is the missing information

answer : 112 black balls

Step-by-step explanation:

Given data:

Each bag contains ; 10 balls

Total number of ball = 100 balls

first: calculate the number of Black balls to be picked from the three bags

From bag 1 = 0.4 * 0.35 * 10 = 1.4 balls

From bag 2 = 0.8 * 0.45 * 10 = 3.6 balls

From bag 3 = 0.3 * 0.2 * 10 = 0.6 ball

Total black balls picked = 5.6

∴ percentage of black balls picked given that each bag contains 10

5.6 / 10 * Total balls available = 56 balls = 56% of 100 balls

Hence If the player plays this game 200 times the number of black balls he will pick = 56% * 200 = 112 balls

4 0

3 years ago

A 25-pound bag of bird food costs $19.50.A 30-pound bag of the same bird food costs $5.18.A 26-ounce opackage costs $10.40. Whic

Lyrx [107]

The 30 pound bag is the bust guys it's bigger and same price and in the long run would be better

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3 years ago

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