Mrs. Parker misplaced 10% of her brooches in May. She misplaced
another 10% of her brooches in June but managed to find 10% of the
brooches that she misplaced in May. What percentage of her brooches did she have at the end?

Answer: B) 13 & 1/2

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Explanation:

There are a few ways to approach this problem. It might be easiest to convert all the fractions to decimal form

1/2 = 0.5

3/4 = 0.75

6 & 3/4 = 6 + 3/4 = 6 + 0.75 = 6.75

The problem is rephrased as: "How many 0.5 cup servings in a box of oatmeal that contains 6.75 cups of oatmeal?"

To find out, we divide the two values (large over small) to get 6.75/0.5 = 13.5

Then convert back to a mixed number:

13.5 = 13 + 0.5 = 13 + 1/2 = 13 & 1/2

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Side note: The reason why we divide is due to this

x = number of servings

0.5x = total number of cups = 6.75

So we're effectively solving the equation 0.5x = 6.75, in which we divide both sides by 0.5

Answer:

C

Step-by-step explanation:

Can I get brainliest

C because it is the only option that depicts 2 blue marbles and one red one

Answer:

Step-by-step explanation:

whatever nobody cares and that person gave you the wrong answer

Answer:

B

Step-by-step explanation:

Answer:

In the 15th century, Europe sought to expand trade routes to find new sources of wealth and bring Christianity to the East and any newly found lands. This European Age of Discovery saw the rise of colonial empires on a global scale, building a commercial network that connected Europe, Asia, Africa, and the New World.

Answer:

Step-by-step explanation:

900 for adults 9000 for kids in all 9900

Answer:

20 X 45=900 + 15 X 600=9000

the answer is 9900

Step-by-step explanation:

Answer:

Jenny cycles the grand distance of 29 and one third of a mile.

Step-by-step explanation:

I want to answer this using fractions and without multiplying by an awkward recurring decimal.

Cycling 11 miles in 45 minutes and continuing at the same speed means she will go 22 miles in 90 minutes

To scale up 90 mins to the required 120 mins (2 hours) multiply by 4/3.

22 x (4/3) = 88/3

Jenny will travel 88/3 miles in 2 hours.

Not happy with top heavy fractions?

Let's round up 88/3 to 90/3 by adding 2/3.

90/3 = 30 and to get back to the answer we just take away the two thirds we added when rounding up.

Jenny cycles the grand distance of 29 and one third of a mile.

I think that is the correct answer.

Answer:

1. 0.875 2. 0.666… 3. 2.25 4. 0.8333…

Step-by-step explanation:

The easiest way to convert a fraction to a decimal is to divide the numerator (the top of the fraction) by the denominator (the bottom of the fraction) by using a calculator. The resulting answer will be the value of the fraction expressed as a decimal number. Hope you get it! :)

Answer:

The largest Custorary Unit of time is a year

Answer:

3846.68182

Step-by-step explanation:

Answer:

the answer has to be 3(17-y)

Step-by-step explanation:

I'm pretty sure about that cause what I did at first is subtract the numbers.

60-3y-9

=51-3y

factor our 3 from the expression.

3(17-y)

Answer:

option A

Step-by-step explanation:

the expression given is equal 60-3y-9= -3y+51

The option A doing the distributive property will give you the same answer

3(17) and 3(-Y) = 51 - 3y

Answer:

I think the answer is 124 though I'm in 8th grade . I have completed algebra 1.

Step-by-step explanation:

The other side of the circle has four minor arcs since they each measure less than  180 .

Answer:

x = -3 is the point of discontinuity.

Hence, option B is correct.

Step-by-step explanation:

Given the expression

[tex]y=\frac{5x+6}{x^2+6x+9}[/tex]

In order to determine the discontinuity, the denominator must be 0.

so let us solve the denominator to get the values of x

[tex]x^2+9x+9\:=0[/tex]

[tex]\left(x+3\right)^2=0[/tex]

Using the zero factor principle

if ab=0, then a=0 or b=0 (or both a=0 and b=0)

[tex]x+3=0[/tex]

Subtract 3 from both sides

[tex]x+3-3=0-3[/tex]

[tex]x = -3[/tex]

Therefore, x = -3 is the point of discontinuity.

Hence, option B is correct.

Answer:

The expected value is -$0.17

Since it gives a negative expected value, the game is not favorable and should not be played

Step-by-step explanation:

Here, we want to calculate the expected game value and decide if the game is worth playing

Probability of rolling a six is 1/6

Probability of rolling a 5 is 1/6

Probability of rolling a number less than 5 is 4/6 = 2/3

So the only way to win is rolling a six

The expected value is thus;

1/6(3) - 0(1/6) - 2/3(1)

= 1/2 - 2/3

= -$0.17

Since the game gives a negative expected value, it is not favorable and should not be played

In this exercise we want to use probability to calculate the value we will have in total after the event occurs, like this:

The value is -$0.17, with thw negative value, the game should not be played.

Let's organize the information given in the statement, in this way, we will have to:

With this combination of values, we find that the probability will be calculated as:

[tex]1/6(3) - 0(1/6) - 2/3(1)= 1/2 - 2/3\\= -$0.17[/tex]

See more about probability at brainly.com/question/795909

Answer:

$5.65

Step-by-step explanation:

Divide 22.6 / 4.

5.65

Best of Luck!

Answer:

-3

Step-by-step explanation:

4(2)-2(2+4)+1=8-2(6)+1=9-12=-3

Answer:

13

Step-by-step explanation:

4a-2=4×2-2=6

6(2+4) =6×6+1

Answer:

B, [tex]10^{2} + 5^{2}- 2(10)(5)cos(75)[/tex]

Step-by-step explanation:

Using the law of cosines, which is [tex]c^{2}=a^{2}+b^{2}-2ab cos(C)[/tex], you can simply insert all the values.

c=|u+v|

a= r value of u (10)

b= r value of v (5)

To find  C, you simply have to subtract v from u, and then subtract that number from 180 to find the reference angle.

I.E.: ∠135 - ∠30 = ∠105 ↔ 180 - 105 = 75 =  C

so, the completed equation would be 10^{2} + 5^{2}- 2(10)(5)cos(75)

Answer:

its B

Step-by-step explanation:

Just got it right on edge

Answer:

7x^2 -12x(sqrt 14) + 72

Step-by-step explanation:

Use foil and you get

x^2(7) - (3x(sqrt56))+(-3x(sqrt56))+ 9(8)

= The inner terms simplify to -6x(sqrt14) + (-6x(sqrt14)) = -12x(sqrt14)

so answer is

7x^2 -12x(sqrt 14) + 72

Jannelle could go 4,720 miles hope this helps

Answer:

$8

Step-by-step explanation:

Answer:

it is 9 dollars

Step-by-step explanation:

you do 5 x x =45 x is 9

Answer:

417.62

[tex]A=πr(r+\sqrt{x} h2+r2)[/tex]Step-by-step explanation:

because radius is half of diameter and then you would use this equation to solve

Answer:

After 30 years 204 g of the substance will be left.

Option C is correct option.

Step-by-step explanation:

The function given is: [tex]A=600e^{-0.036t}[/tex]

where t is time in years.

We need to find how much of the  substance will be left in the sample after 30 years?

So, we have t= 30

Putting value of t and find value of A

[tex]A=600e^{-0.036t}\\A=600(\frac{1}{e^{0.036*30}})\\A=\frac{600}{e^{1.08}} \\A=\frac{600}{2.94467}\\A=203.75 \approx 204[/tex]

So, After 30 years 204 g of the substance will be left.

Option C is correct option.

Answer:

22.5 divided by 3=7.5

Step-by-step explanation:

Answer:

its 9

Step-by-step explanation:

3x1/3 you don't do nothing with the 1 so don't

multply it then what you do is 3x3 then you get 9

hope it helps!

Answer:

10% of 28=2.8

40% of 28=11.2

Step-by-step explanation:

11.2

Answer:

12

Step-by-step explanation:

Answer:

D. Multiply the second equation by 3. The solution is x = 12, y = 10.

Step-by-step explanation:

First, look at the y variable of the first equation. It is 3y.

To solve by elimination, the variables have to add together to 0.

So, -3y needs to be added to -3y to eliminate the y variable.

The second equation has the y variable of -y, so it has to be multiplied by 3.

So, answer choice D is the correct answer.