Answer:
1 number= 4.5
2 number= 3.5
Step-by-step explanation:
A bookshelf contains 9 mysteries, 7 biographies, and 4 science fiction books. If a book is selected at random. What is the probability of selecting a biography or a mystery?
The probability of selecting a biography or a mystery is 0.8
How to get the probability?
We assume that all the books have the same probability of being randomly selected.
The probability of getting a particular type of book is given by the quotient between the number of these books and the total number of books.
Here we want to find the probability of selecting a biography or a mystery, there are 9 mysteries and 7 biographies, and a total of 20 books in the shelf, so the probability is:
P = (7 + 9)/20 = 16/20 = 4/5 =0.8
The probability is 0.8
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A 400 meters running track has two straight sections, each of length 120 meters and two semicircular ends. calculate the total length of the of the curved sections of the track.
Answer:
160 m
Step-by-step explanation:
Length of running track = Total Length of straight sections + Total length of curved sections
Solving :
⇒ 400 m = 2 x 120 m + Total Length of curved sections
⇒ Total Length of curved sections = 400 m - 240 m
⇒ Total Length of curved sections = 160 m
a box in the shape of a rectangular prism has a length of 3 5/8 inches a width of 2 1/2 inches and a height of 4 inches. what is the volume of the box
The volume of the rectangular prism box with the given dimensions is: 36.25 cubic inches.
What is the Volume of a Rectangular Prism?Volume of a rectangular prism = (length)(width)(height)
Dimensions of the given rectangular prism box:
Length = 3 5/8 = 3.625 inchesWidth = 2 1/2 = 2.5 inchesHeight = 4 inchesVolume of the rectangular prism box = (3.625)(2.5)(4) = 36.25 cubic inches.
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Mrs. bell has a 256 ounce bag of potting soil what is the greatest number of 6 ounce pots she can completely fill with soil
In how many ways can we stack 10 books?
The arrangement of items can be done with the use of permutation. The stacking of the number of books in the question can be done in 3,628,800 ways.
The arrangement of a given number of items can be done when definite numbers are to be considered at once by the use of permutation. A permutation is a mathematical method that can be used to determine the number of ways by which given items are to be arranged in a particular order.
Given that 10 books are to be stacked, the number of ways (n) that this can be done can be determined by:
n = 10!
= 10 x 9 x 8 x7 x6 x5 x4 x3 x2x 1
n = 3,628,800
Therefore, the 10 books can be stacked in 3,628,800 ways.
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What are the zeros of the function defined by x +x-12?
A) {-4, -3} B) {-4, 3} C) {-3, 4) D) {3,4}
Answer:
Step-by-step explanation:
(x + 4)(x - 3)=0
x + 4 = 0
x = -4
x - 3 = 0
x = 3
answer B
PLS NEED HELP! 40 point reward if correct. with brainiest!
I need this done before around 6 pm 5/13/2022 in western time (USA)
Answer:
Number 1 could be -x.
I don't know the answer to number 2.
Number 3 is the same as 1.
Step-by-step explanation:
sorry. i probably would know the answer if i remembered.
2. What is the measure of angle A?
Answer:
the answer is 63 degrees
Step-by-step explanation:
PLSSSS HELP ME WITH THIS!!!!!
Answer:
A
Step-by-step explanation:
(5,2)
(5+1,2-1)
(6,1)
Dilation of 2 from origin
6x2=12
1x2=2
(12,2)
PLS HELP ME ASAP !!!
The probability that she picks a blue marble three times in a row is 1/125.
Given that
Samantha has a bag of 5 different colored marbles.
She randomly picks a marble from the bag, records the color, and returns it to the bag before picking another marble.
We have to determine
What is the probability that she picks a blue marble three times in a row?
According to the question
Samantha has a bag of 5 different colored marbles.
She randomly picks a marble from the bag, records the color, and returns it to the bag before picking another marble.
The probability of picking a bag one time is,
Number of bag pack at a time
Total number of bag
=1/5
The probability of picking a bag second time is,
Number of bag pack at a time Total number of bag
=1/5
The probability of picking a bag third time is,
Number of bag pack at a time
Total number of bag
=1/5
031%
Therefore,
The probability that she picks a blue marble three times in a row is,
= 1/5 X 1/5 X 1/5
1 /125
Hence, the probability that she picks a blue marble three times in a row is 1/125.
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Step-by-step explanation:
hope this helps
Is the opposite of any number smaller than the original number?
Sometimes it is true and sometimes no.
in the case of 3 the opposite is -3
so yes
in the case of -3 the opposite is 3
so no.
If the problem were "The opposites are always less than the original number."
Then the answer would be "No, not true."
Step-by-step explanation:
Answer:
Opposite of a number can be sometimes greater than itself,may be less then it or even equal.
Step-by-step explanation:
HELP ME PLEASE!!!!!!!
I will help you back!!!!
Is 0 03 less than or greater than 0.32
is 5.91 greater or less than 5.01
Is 3.73 greater or less than 3.83
Meghan’s bank account is charged $9.95 per month for an online newspaper subscription. How could you represent the change in her account balance after three months of charges?
·⎯.=
After three months, the change in her account balance is $.
A number line from negative 30 to 0, split into 3 equal sections of negative 9.95.
Convince Me!
Meghan’s bank account is charged 3 times. Without calculating, how can you determine whether this would be a negative or positive change to her account? Explain.
The expression for the amount of Meghan's newspaper for three months will be T = C - (9.95 x 3).
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, expansion and division.
The account balance total can be calculated with the following equation where the variable T represents the final balance while the variable C represents her current balance before the three months.
T = C - (9.95 * 3)
The monthly charge is multiplied by the three months that Megan will be charged and then discounted from her current balance in order to give the new Total Balance after paying the subscription for the three months.
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Find the cardinal number for the following set A.
A= {x | x is a letter in the word aftershock}
The cardinal number of set A is
Answer:
I hope this answer is correct
Select the expression that represents the following statement multiply 6 by 2, and then subtract 4. 2 - 4x6
6 x 2 - 4
6 + 6 + 4 - 2
6 × 4 - 2
exam tomorrow need help
Answer:
See below ~
Step-by-step explanation:
The perimeter of a figure refers to the sum of the side lengths of its edges.
Figure (a) : Triangle
⇒ P = 2a + 1 + 3a + a - 4
⇒ P = 6a - 3
⇒ P = 3 (2a - 1)
Figure (b) : Hexagon
⇒ P = 3m - 1 + 3n + n + m + 3m + 1 + 4n + m + n + 2
⇒ P = 3m + m + 3m + m + 3n + n + 4n + n + 1 - 1 + 2
⇒ P = 8m + 9n + 2
Figure (c) : Trapezoid
⇒ P = 2a + 3 + 3a - b + 2a + 2b - 4 + b + 4
⇒ P = 2a + 3a + 2a + 2b + b - b + 4 - 4 + 3
⇒ P = 7a + 2b + 3
Determine whether the equation is true or false
Answer:
its is true just keep practicing applying urself love<33
What is the solution?
Answer:
1200c^3
Step-by-step explanation:
cut the shape it to half with a square and a prism and calculate them separately then add the volume!
Hope this helps! ;-)
Please help and show work if possible thanks
Step-by-step explanation:
a.
the arc angle AC = 180° (since this is a diameter).
the arc angle BC = 60°.
so,
arc angle AB = arc angle AC - arc angle BC = 120°.
b.
the exterior angle of a circle segment at the circle arc is half of the interior angle at the center of the same segment.
the angle A = arc angle BC / 2 = 30°.
c.
the same principle as in b.
the angle C = arc angle AB /2 = 60°.
d.
the arc angle AD = the angle at AOD (that is how arc angles are defined).
the angle AOD = the angle AOF.
the sum of all angles in a triangle is always 180°.
angle AOD = AOF = 180 - 90 - angle A = 60°.
e.
as explained, this is the same as the arc angle AD and therefore the same as d.
it is 60°.
f.
the arc angle CE = the arc angle AD = 60°.
remember, the angles of intersecting lines are the same (just side mirrored) on both sides of each line.
g.
the arc angle ABE = arc angle AB + arc angle BC +
+ arc angle CE = 120 + 60 + 60 =
= 240°
h.
the angle AOE = the arc angle AE = the remainder of 360 minus the arc angle ABE of g.
so, angle AOE = 360 - 240 = 120°
Question 6
What would you do to isolate the variable in the equation below using only one step?
x +4= 10
A rectangular room has a length of 16 ft and a diagonal of 22 ft. What is the approximate
width of the room?
Answer:
no
Step-by-step explanation:
Answer: 15.09967ft
Step-by-step explanation: w=d2﹣l2=222﹣162≈ hope this helps ^^
13. Represent Write three different fractions
that each match the shaded part of the
drawing.
Answers:
8/12
2/3
4/6
============================================================
Explanation:
There are 8 pizza slices shaded out of 12 total.
One fraction we can form is 8/12
Divide each part by the GCF 4
8/4 = 212/4 = 3This means 8/12 is the same as 2/3
Check out the image below to see how 8/12 and 2/3 are the same. Refer to figure 1. We have 2 slices shaded out of 3 total.
Then check out figure 2 to see how 2/3 and 4/6 are the same. By extension, this means that 8/12 and 4/6 are the same. Figure 2 shows 4 shaded slices out of 6 total.
There are infinitely many ways we can split up this pie, so there are infinitely many fractions to write as the answers.
Find the range of the following data. Answers are rounded to the nearest tenth. 5, 5, 6, 12, 13, 26, 37, 49, 51, 56, 56, 84
Answer:
Step-by-step explanation:
Remeber range is the difference between the highest and lowest values in a set of numbers. so 79 right rounded to the nearst tenth the answer will be 80
Which of these decimals is the smallest?
0.38
0.376
0.3745
0.375
The table shown below gives the estimated number of text messages sent in the U.S. by year.
Approximately how many times as many text messages were sent in the U.S. in 2011 as in 2005?
Year Text messages sent in the U.S.
2005 118,000,000,000
2007 577,000,000,000
2009 1,198,000,000,000
2011 2,357,000,000,000
Choose 1 answer:
A.) 2*10^1
B.) 4*10^1
C.) 2*10^3
D.) 4*10^3
Answer:
A)
Step-by-step explanation:
2005: 118000000000
2011: 2357000000000
Option A) = 20
118000000000 * 20 = 2360000000000
2360000000000 is approximately close to 2357000000000
A plumber fixed a leaky sink and charged $55 for parts and $45 per hour for labor. If the total bill was $190, how many hours did the plumber spend fixing the sink?
Answer:
3 hours
Step-by-step explanation:
$190 - $55 = $135 that the plumber charged for labor
$135/$45 = 3 hours that the plumber spent fixing the sink
Please help I have been stuck on this for hours
Answer:
I have attached a screenshot below with the answers written down!
Step-by-step explanation:
[tex]5*3=15[/tex]
[tex]15*3=45[/tex]
Next
[tex]20*\frac{1}{2}=10[/tex]
[tex]10*\frac{1}{2}=5[/tex]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope this helps!
Have a great day!
:)
PLEASE HELP URGENT I will give brainiest
Answer: I’ll edit this when I get the photo.
Step-by-step explanation:
Find the next two terms in this
sequence.
20, 32, 42, 50, 56, [?
Answer:
so the next 2 sequences would be 60 and 62
Step-by-step explanation:
The next two terms in the given arithmetic sequence are 60 and 62.
The arithmetic sequence is given as follows:
20, 32, 42, 50, 56, ?
To find the next two terms in the sequence, let's analyze the pattern:
The sequence increases by the following increments:
12, 10, 8, 6
We can observe that the increments are decreasing by 2 each time.
To find the next two terms, we can continue this pattern:
Increment: 4 (6 - 2)
Increment: 2 (4 - 2)
Adding the increments to the previous terms:
56 + 4 = 60
60 + 2 = 62
Therefore, the next two terms in the arithmetic sequence are 60 and 62.
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Jill bought 3 pints of strawberries for $3.98 each. What is the best estimate of how much Jill spent?
$4.00
$9.00
$12.00
$8.00
Answer:
Answer C. $12.00
Step One: Round
First you will want to round $3.98 to the nearst hundredth. A little saying my teacher taught me to help you to remember to round:
Find your place, and move next door.
Five or over add one more!
Numbers to the left, stay the same.
Numbers to the right, zeros your name!
So, we choose the 8 in 3.98. We then round. Since the nine is over five, we add one more to it. Causing it to be 4.00
Step Two: Multiply
Now multiply buy 3 since Jill is getting three pints of strawberries
3 times 4 is twelve
So, your answer is 12.00
Hope this helps!!
