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3 years ago

Can somebody please help me with this

Mathematics

1 answer:

dsp733 years ago

8 0

Suggestion: Please show the problem for the questions, or I'm afraid I can't help!

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Which number line correctly shows -3-1.5?

Papessa [141]

Pretty sure it’s the 3rd

7 0

3 years ago

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Marcos purchased a sail boat for $56,900. He anticipates each year the boat will decrease in value by 8.1% from the previous yea

Varvara68 [4.7K]

Answer: $56,900\left( 0.919\right)^x$

Step-by-step explanation:

Given

Marcos purchased a sailboat for $\$56,900$

Each year the boat will decrease in value by $8.1\%$

After 1 year it is

$\Rightarrow 56,900-56,900\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\\$

after another year it becomes

$\Rightarrow 56,900\left( 1-0.081\right)-56,900\left( 1-0.081\right)\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\cdot \left( 1-0.081\right)\\\Rightarrow 56,900\left( 1-0.081\right)^2$

After $x$ years it is

$\Rightarrow 56,900\left( 1-0.081\right)^x$

$\Rightarrow 56,900\left( 0.919\right)^x$

5 0

2 years ago

You put $643 into an investment at 3% for one year. What will the balance (total amount) be

baherus [9]

Answer:

$662.29

Step-by-step explanation:

7 0

3 years ago

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What is the probability of the complement of rolling a number less than 5 by using a six-sided die?

Inessa05 [86]

<h3><u>Answer:</u></h3>

Hence, the probability of the complement of rolling a number less than 5 by using a six-sided die is:

1/3

<h3><u>Step-by-step explanation:</u></h3>

Let A denote the event of rolling a number less than 5 in a six-sided die.

Now, we know that the Total outcomes are: 6

since, the sample space is given as: {1,2,3,4,5,6}

Also Number of favorable outcomes are: 4

since the numbers which are less than 5 are {1,2,3,4}

Now we have to find:

$P(A^c)$

where P denotes the probability of an event and $A^c$ denote the complement of event A.

We know that:

$P(A^c)=1-P(A)$

Now,

$P(A)=\dfrac{4}{6}\\\\P(A)=\dfrac{2}{3}$

Hence,

$P(A^c)=1-\dfrac{2}{3}\\\\P(A^c)=\dfrac{3-2}{3}\\\\P(A^c)=\dfrac{1}{3}$

Hence, the probability of the complement of rolling a number less than 5 by using a six-sided die is:

1/3

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3 years ago

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David purchased some cookies at the cost of 5 for $4 and sold them at 4 for $5. David made a profit of $180 in total. How many c

horsena [70]

David purchased some cookies at the cost of

5 for $4 (5/4=1.25) and

sold them at 4 for $5(4/5=0.80).

To find cost per cookie subtract 1.25-0.80=0.45

David made a profit of $180 in total ( divide profit per cookie cost: 180/0.45= 400)

How many cookies did David purchase to make that much money?

He needed to make 400 cookie to make the profit of $180.

5 0

3 years ago