The graph shows the number of each kind of book in Hero's personal library. A book is chosen randomly. What is the probability that the book chosen is a biography?
A)2/15
B)4/15
C)1/30
D)1/4
Answer: A is the right answer .Probability of the book chosen is a biography is [tex]\frac{2}{15}[/tex].
Step-by-step explanation:
According to the given graph or pie chart
The number of biography books=4
Total books= Romance books+ Science fiction books+ Biography books+Adventure books =2+14+4+10=30
Let B be the event of choosing a biography book then
Probability of the book chosen is a biography P(B)=[tex]=\frac{biography\ books}{total\ books}=\frac{4}{30}=\frac{2}{15}[/tex]
Therefore, Probability of the book chosen is a biography is [tex]\frac{2}{15}[/tex].
From the graph, it is found that there is a [tex]\mathbf{\frac{2}{15}}[/tex] probability that the book chosen is a biography, and the correct option is given by option A.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem:
There are 4 + 2 + 10 + 14 = 30 books in the hero's library.Of those, 4 are biographies.[tex]p = \frac{4}{30} = \frac{2}{15}[/tex]
Thus:
[tex]\mathbf{\frac{2}{15}}[/tex] probability that the book chosen is a biography, and the correct option is given by option A.
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henry is following the recipe card to make a cake. he had 95 cups of flour. how many cakes can henry make?
flour needed for each cake
2 2/9 cups of batter
1/2 cup for topping
Answer:
the number of cakes that can be produced is only 34.
Step-by-step explanation:
total flour needed = flour need for batter + flour needed for topping
,
total flour needed = 2 2/9 cups + 1/2 cup = 49/18 cups
after, we divide the total amount of flour by the answer obtained above to determine the number of cakes that can be made.
number of cakes is the total amount of flour needed per cake
number of cakes is 95 cups / (49/18) = 34.89 cakes
the number of cakes that can be produced is only 34.
A box contains 3 items that are labeled a, b, and
c. two items are selected at random (without replacement) from this box. list all the possible outcomes for this experiment.
you could pick:
A & B
A & C
B & C
B & A
C & A
C & B
The total number of possible outcomes is 6 and this can be determined by using the given data.
Given :
A box contains 3 items that are labeled a, b, and c.Two items are selected at random (without replacement) from this box.The following steps can be used in order to determine all the possible outcomes for this experiment:
Step 1 - According to the given data, the total number of items in the box is 3.
Step 2 - The total number of outcomes for this experiment is given by:
Total outcomes = 3!
Step 3 - Simplify the above expression.
Total outcomes = 3 [tex]\times[/tex] 2 [tex]\times[/tex] 1
= 6
Step 4 - Now, the list of all the outcomes for this experiment:
A and B
A and C
B and C
B and A
C and A
C and B
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Ellen garcia earns $23.68 an hour as an assistant aircraft mechanic at a local airport. she must work _____ hours a week to earn $850 a week. (enter only the number and round to the nearest whole hour.)
divide the amount she wants to make ( 850) by her hourly pay (23.68)
850 / 23.68 = 35.895
rounded to the nearest whole hour is 36 hours
A sofa is on sale for 357 which is 32 percent less than the original price how much is the original price
The sofa's original price is calculated by using the formula: original price = sale price/percentage in decimal format. In this case, the percentage is 68%, and hence the original price would be 357 / 0.68 which is equal to $525.
Explanation:This is a percentage problem. If the sale price of $357 represents 68% of the original price (because 100% - 32% is 68%), we can find the original price of the sofa using the formula: original price = sale price/percentage in decimal format.
Therefore, the original price would be 357 / 0.68 = $525
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Please Help!!! "What is the area of trapezoid ABCD? Enter your answer as a decimal or whole number in the box. Do not round at any steps."
Answer:
The Answer is 37.5
Step-by-step explanation:
Which pair of angles shares ray A-F as a common side?
Given : FA is a ray.
Find out the pair of angles share the common side FA.
To proof
As shown in the diagram
∠ BAF and ∠DAF are th.e pair of angles shares FA as a common side
REASON
Adjacent Angles are those angles that share a common side, a common vertex, and no common interior points.
as ∠ BAF and ∠DAF shares common vertex A and common side FA.
Therefore
∠ BAF and ∠DAF are th.e pair of angles shares FA as a common side
Felicia installed a new pool for $17,190 using a 12-month deferred payment plan with an interest rate of 18.67%. What is the balance after the deferment period if payments of $589 are made each month?
a. $10,122.00
b. $20,688.76
c. $13,620.76
d. $17,190.00
Answer:
a. $10,122.00
Step-by-step explanation:
By definition the deferment period is a time during which a borrower does not have to pay interest or repay the principal on a loan.
In this case the balance should be the initial value $17,190, but Felicia made 12 payments of $589 each one.
So, $589 x 12 = $ 7,068.
$17,190- $ 7,068 = $10,122
Beatrice's house is assessed at $102,000 and her property tax rate is 3.6%. How much are her annual property taxes?
Answer:
The annual property taxes is $3672 .
Step-by-step explanation:
As given in the question
Beatrice's house is assessed at $102,000 and her property tax rate is 3.6%.
3.6% is written in the decimal form
[tex]= \frac{3.6}{100}[/tex]
= 0.036
Property tax price = 0.036 × $102000
= $3672
Therefore the annual property taxes is $3672 .
find cos B.
a. cosB= 41/40
b. cosB=9/41
c. cosB=40/41
d. cosB=9/40
Which principle helps us to determine the total number of outcomes in a sample space?
there are 45 cans of mixed nuts if each can has 338 nuts what is the total number of nuts,n, in all of the cans
The total number of nuts in all the cans is found by multiplying the number of cans (45) by the number of nuts in each can (338). Hence, the total number of nuts, n, in all of the cans is 15210.
Explanation:This problem is related to simple multiplication. Here, you have 45 cans of nuts and each can contains 338 nuts. So if you want to find the total number of nuts in all the cans, you need to multiply 45 (total number of cans) by 338 (number of nuts in each can).
The multiplication is as follows:
45 * 338 = 15210
So, the total number of nuts, n, in all of the cans is 15210.
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The ratio of the number of cookies to the number of cupcakes in a box is 5:4. Which table shows the possible amounts of cookies and cupcakes in a box, given the ratio?
#1
Cookies: Cupcakes:
5 4
10 8
20 16
40 32
#2
Cookies: Cupcakes:
5 4
10 9
20 19
40 39
#3
Cookies: Cupcakes:
5 4
6 5
7 6
8 7
#4
Cookies: Cupcake:
5 4
7 6
9 8
11 10
Table 1 shows the possible amounts of cookies and cupcakes in a box, given the ratio of 5 : 4.
What is Ratio?
A ratio indicates how many times one number contain in another number.
Given that;
The ratio of the number of cookies to the number of cupcakes in a box is 5 : 4.
Now, In the table 1;
The ratio are given as,
5 : 4
10 : 8
20 : 16
40 : 32
Since, The ratio are 5 : 4.
Simplify all the ratio as;
10 : 8 = 10/8
= 5/4
= 5 : 4
And, 20 : 16 = 20/16
= 10/8
= 5/4
= 5 : 4
And, 40 : 32 = 40/32
= 20/16
= 10/8
= 5/4
= 5 : 4
Thus, Table 1 shows the possible amounts of cookies and cupcakes in a box, given the ratio of 5 : 4.
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Need both answers please
The expression 0.00222 x 10^n is greater than 2 (and n is an integer). what is the smallest possible value for n
The ratio of the number of Mimi’s Eminem CD’s to the number of Rita’s Eminem CD’s is 5:8. Rita has 18 more Eminem CD’s than Mimi. If Rita gives 22 CD’s to Mimi, what will be the new ratio of the number of Mimi’s Eminem CD’s to Rita’s?
A radio station gives away $15 to every 15th caller, $25 to every 25th caller, and free concert tickets to every 100th caller. When will the station first give away all three prizes to one caller? PLEASE HELP. Show your work !!
We want to find the lowest common multiple of 3 numbers.
We will see that the 300th caller will get the 3 prizes.
Ok, we know that:
each 15th caller gets $15.each 25th caller gets $25.each 100th caller gets free concert tickets.We want to see the first time that the 3 prizes will be given at the same time (at the same caller).
This will happen for the lowest common multiple of 15, 25 and 100
Now, to find the lowest common multiple we can use brute force, this is, writing all the multiples of the 3 numbers and watching which one is the first to appear in the 3 lists, but here we can do another thing.
One of the numbers is 100, so its multiples are:
100, 200, 300.
And we know that with 25 we can make all of these numbers:
25*4 = 100
25*8 = 200
25*12 = 300
So all the multiples of 100 are also multiples of 25.
Then we just need to find the first common multiple between 100 and 15.
To get this, we can decompose both numbers as a product of primes:
15 = 3*5
100 = 10*10 = 2*5*2*5
Now we multiply these, but if there is some factor that appears in both numbers we remove it (only from one).
For example, here we can see that the factor 5 appears in both numbers, so we need to remove one of the fives in the product.
We will get:
(3*5)*(2*5*2) = 300
So the lowest common multiple is 300.
This means that the 300th caller will get the 3 prizes.
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20 POINTS if you answer!!!!
Clarence sells yearly subscriptions to a particular magazine. He sells at least 10 and no more than 25 subscriptions each week. The function f(t)=48tf(t)=48t represents the amount of money earned for selling t subscriptions each week. What is the practical range of the function?
Answer:
All multiples of 48 between 480 and 1200, inclusive
Step-by-step explanation:
I took the test;)
The practical range of the function is [480, 1200].
Explanation:The function f(t)=48t represents the amount of money earned by Clarence for selling t subscriptions each week. To find the practical range of the function, we need to determine the minimum and maximum value of t that satisfy the given conditions. Since Clarence sells at least 10 and no more than 25 subscriptions each week, the practical range of the function is [480, 1200]. This means that the amount of money earned by Clarence each week can range from $480 to $1200.
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Fred has a savings account balance of $1728.57. The interest-rate on the account is 3.4% compounded daily. If he opened the account nine years ago, what was the value of his initial deposit?
Fred's initial deposit, considering a 3.4% interest rate compounded daily over nine years, was approximately $1258.16.
To find Fred's initial deposit, we need to use the formula for compound interest:
A = P(1 + r/n)ⁿᵗ, where:
Here, we know:
A = $1728.57r = 0.034 (3.4% interest rate)n = 365 (compounded daily)t = 9 yearsWe need to find P. Rearrange the formula to solve for P:
P = A / (1 + r/n)ⁿᵗ
Substitute the known values:
P = 1728.57 / (1 + 0.034/365)³⁶⁵×⁹
First, calculate the daily interest rate
0.034 / 365 = 0.00009315
Next, calculate the exponent:
(365 × 9) = 3285
Now, compute (1 + daily interest rate) raised to the power of 3285:
(1 + 0.00009315)³²⁸⁵ = 1.37423
Finally, divide the final amount by this value:
P = 1728.57 / 1.37423 = 1258.16.
Bernard solved the equation 5x+(-4)=6x+4 using algebra tiles. Which explains why Bernard added 5 negative x-tiles to both sides in the first step of the solution?
A) He wanted to create zero pairs on the left side of the equation to get a positive coefficient of x on the right side.
B) He wanted to combine more negative tiles with the 4 negative tiles on the left side of the equation.
C) He wanted to remove the larger coefficient on the left side of the equation.
D) He wanted to have 10 x-tiles on the left side of the equation.
Answer:
a
Step-by-step explanation:
if dont want to read
A marble is drawn at random from the bag shown below. The bag contains 3 green, 4 yellow, 5 blue, and 8 pink marbles.What is the probability that the marble drawn is a green or blue?
3 + 4+ 5+8 = 20 total marbles
3 green +5 blue = 8 marbles
probability = 8/20 reduces to 2/5
Lester worked 12 hours last week at the grocery store and earned $93.00. if he continues to earn the same hourly pay, how many additional hours must he work to earn another$62.00?lester worked 12 hours last week at the grocery store and earned $93.00. if he continues to earn the same hourly pay, how many additional hours must he work to earn another$62.00?
3h = 7 ( 2/7 - 3/7h ) -10 what does the variable equal
At a grocery store, blueberries come packaged in 8-ounce containers for $2.80. At a farmer's market, blueberries cost $4.20 for 14 ounces. There are 16 ounces in one pound. Which statement accurately compares the cost of blueberries?
Answer:
$0.80
Step-by-step explanation:
A researcher wants to know if the average time in jail for robbery has increased from what it was when the average sentence was 7 years. he obtains data on 400 more-recent robberies and finds an average time served of 7.5 years. find a 95% confidence interval for the average time served (assume jail time follows a normal distribution with standard deviation 3 years).
At 95% confidence interval, the z score is 1.96. Using the formula:
Confidence Interval = x ± z s / sqrt (n)
where x is the average time served, s is standard deviation and n is number of samples
Confidence interval = 7.5 ± (1.96 * 3) / sqrt (400)
Confidence interval = 7.5 ± 0.294
Confidence interval = 7.206 to 7.794
Problem: Find the value of $x$ that maximizes $$f(x) = \log (-20x + 12\sqrt{x}).$$ If there is no maximum value, write "NONE".
Answer:
The value of x is 0.09
Step-by-step explanation:
Here, the given function is,
[tex]f(x)=\log(-20x+12\sqrt{x})[/tex]
Differentiating with respect to x,
[tex]f'(x)=\frac{1}{-20x+12\sqrt{x}}(-20+\frac{12}{2\sqrt{x}})[/tex]
[tex]=\frac{-20+\frac{6}{\sqrt{x}}}{-20x+12\sqrt{x}}[/tex]
[tex]=\frac{-10+\frac{3}{\sqrt{x}}}{-10x+6\sqrt{x}}[/tex]
[tex]=\frac{-10\sqrt{x}+3}{2\sqrt{x}(-5x+3\sqrt{x})}[/tex]
Again differentiating with respect to x,
[tex]f''(x)=-\frac{(-10\sqrt{3}+3)(-15x+3\sqrt{3})}{4x\sqrt{x}(-5x+3\sqrt{x})}[/tex]
For maxima or minima,
[tex]f'(x) = 0[/tex]
[tex]\implies \frac{-10\sqrt{3}+3}{2\sqrt{x}(-5x+3\sqrt{3})}=0[/tex]
[tex]\implies x \approx 0.09[/tex]
At x = 0.09,
f''(x) = negative,
Hence, for x = 0.09, f(x) is maximum.
Your parents win the lottery and offer you an incredible deal. They will pay you money each day for 30 days for doing your chores. You can choose to be paid one million dollars on the 30th day, or you can pay be paid one cent the first day, and each day the amount you get paid is doubled from the previous day. Which is deal would you choose and why?
The 55 bridesmaids want to make 325 favors for a wedding. Each favor takes about 2 1/2 minutes to make.
About how long will each bridesmaid have to spend making favors?
A.First pic
B.2nd
C.3rd pic
A market sells a six-pound bag of potatoes for $6.27 and a 7.5-pound bag of potatoes for $7.65. Which bag of potatoes is a better buy??
What is m∠AEB?
Enter your answer in the box.
Answer: It's 115 I took the k12 test
Step-by-step explanation: