Given:
A jar of coins has 8 pennies, 5 nickels, 1 dime, and 7 quarters.
To find:
The probability of drawing a quarter, replacing it, and drawing another quarter.
Solution:
A jar of coins has 8 pennies, 5 nickels, 1 dime, and 7 quarters.
Total number of coins = 8+5+1+7 = 21
Probability of getting a quarter is
[tex]P(Quarter)=\dfrac{\text{Number of quarters}}{\text{Total number of coins}}[/tex]
[tex]P(Quarter)=\dfrac{7}{21}[/tex]
[tex]P(Quarter)=\dfrac{1}{3}[/tex]
After drawing a quarter, we replaced it. So, the probability of getting quarter in second draw is the same and first one, .i.e., [tex]P(Quarter)=\dfrac{1}{3}[/tex].
The probability of drawing a quarter, replacing it, and drawing another quarter is
[tex]P=\dfrac{1}{3}\times \dfrac{1}{3}[/tex]
[tex]P=\dfrac{1}{9}[/tex]
Therefore, the required probability is [tex]\dfrac{1}{9}[/tex].
-2x + 6 < 20 what is the answer?
Answer:
지금 당장받는 퀴즈에 대한 도움이 정말 필요 해요 ... 그냥 질문에 무작위로 답 해주셔서 ... 미안 해요 미안 해요 .. 또한 몬스타 엑스를 아시나요, 그들은 정말 좋은 그룹입니다
Step-by-step explanation:
Answer:
x=7
Step-by-step explanation:
I NEED HELP ASAPPPP
4. Simplify the radical 27. Give the exact answer in simplified radical form. (use the factor tree)
Answer
5.simplify the radical 1800. Give the exact answer in simplified radical form. Use factor tree
Answer:
4) [tex]3\sqrt{3}[/tex] 5) [tex]10\sqrt{18}[/tex]
Step-by-step explanation:
[tex]27[/tex] can be broken down into [tex]3[/tex] and [tex]9[/tex]
[tex]\sqrt{27}=[/tex][tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex]
However, [tex]\sqrt{9} =3[/tex], so its really just:
[tex]3\sqrt{3}[/tex]
[tex]1800[/tex] can be broken down into [tex]100[/tex] and [tex]18[/tex]
[tex]\sqrt{1800} =[/tex][tex]\sqrt{100}[/tex] × [tex]\sqrt{18}[/tex]
However, [tex]\sqrt{100} =10[/tex], so it is really:
[tex]10\sqrt{18}[/tex]
plz mark me brainliest. :)
Helppp plz I will mark brainliestttt
Step-by-step explanation:
If x=20 3x/5=12
Then if y=30 3y/5=18
It shows that A'B'C' smaller than ABC
Answer:
The correct statement is D
Step-by-step explanation:
Triangle A'B'C' is a diluted version of triangle ABC, so it would be smaller than triangle ABC since its x-value and y-value are being multiplied by a number less than 1.
what is 22
+ 60 is it 87 , 650 , or 82, or 67
Answer:
82
Step-by-step explanation:
vote brainiest plzz
HELPP due at 11:20!!
Answer:
try B if not maybe C
Step-by-step explanation:
Is (1,3) a solution to this system of equations?
4x+5y=19
x+5y=16
Answer:
yes
Step-by-step explanation:
Answer:
yes!
Step-by-step explanation:
4 + 15 = 19
1 + 15 = 16
hope that helped! i'm not the best at explaining stuff, srry!
Sale! 60% OFF of the original price! Samuel wants to buy a model airplane. The original price is $40. How much will Samuel pay if he buys it during the sale?
Answer:
$16
Step-by-step explanation:
1-.6=.4
.4 x 40 = 16
Answer:
60% of 40.00 is 24
Step-by-step explanation:
I hope this helps! Have a wonderful day!
Any languages have what some consider a significant limitation: they lack a gender-neutral third-person singular pronoun. When using a pronoun to refer to a person, speakers must either specify a gender or say something like "he or she." Not only can this be cumbersome, but it means that there is no good pronoun choice when a person's gender is unknown to the speaker. Sweden addressed this problem in 2015 by adding a new pronoun—hen—which refers to a person without specifying a male or female gender. Hen does not replace the Swedish pronouns han, meaning "he," or hon, meaning "she"; it simply adds another option. Thus, Swedes now have their choice of three,
Answer:
Its the answer where it says address I did it on ixl
Step-by-step explanation:
12+c=n, 1.2+1c=0.25n
A tennis ball has a diameter of 2.7 inches. What is the approximate volume of the tennis ball?
o A. 82.4 cubic inches
B. 61.8 cubic inches
C. 10.3 cubic inches
0
D. 7.6 cubic inches
Plz help
Answer:c
Step-by-step explanation:
pls answer help this is due today and i need the answer
Answer:
<1 and <3 are vertical angles and <2 and <4 are vertical angles
Step-by-step explanation:
Hope this helps. pls mark me brainliest. :)
Answer:
2 and 4 are vertical angles
Step-by-step explanation:
Consider AWHY below.
Y
h
31
67°
H Η
W
Solve for h. Round your answer to one decimal place.
73.0
Step-by-step explanation:
tan 67°=O/A=h/31
h=31tan67°
h=73.0
Marissa climbs a vertical ladder to go down a slide. The slide makes a 25° angle with
the ground. If the ladder is 12 ft tall, what is the length of the slide?
Answer:
28.39 ftStep-by-step explanation:
The ladder is the vertical leg and the slide is the hypotenuse of the triangle formed.
The angle opposite the ladder is 25°, slide has the length of x.
sin 25° = opposite/hypotenusesin 25° = 12/xx = 12/sin 25°x = 28.39 ftPlease help me I just want to know what is wrong with that. PLEASE
Answer:
---> --->
WS DS
Step-by-step explanation:
Can somebody plz help answer these questions correclty (like what each letter equals) thanks :3
WILL MARK BRAINLIEST WHOEVER CAN ANSWER THIS FIRST :DD
Answer:
X=12
y=34
z=45
m=33
n=27
z=27
Step-by-step explanation:
there u go
Answer:
23) x -3 = 9
x=9+3=12
24) y-11=23
y=23+11=34
25) z-8=37
z=37+8=45
26) m-16=17
m=17+16=33
27) n-9=18
n=18+9=27
28) z-14=13
z=13+14=27
If 0 < z ≤ 90 and sin(9z − 1) = cos(6z + 1), What is the value of z?
Answer:
6Step-by-step explanation:
Given the expression sin(9z − 1) = cos(6z + 1), for 0 < z ≤ 90, we are to find z
Note that sin theta = cos(90-thetsa)
sin(9z − 1) = cos(6z + 1)
cos (90 - (9z-1)) = cos(6z + 1)
cos (90 - 9z+1)) = cos(6z + 1)
cos (91-9z) = cos(6z + 1)
Cos will cancel out to have;
91-9z = 6z+1
-9z - 6z = 1-91
-15z = -90
z = 90/15
z = 6
Hence the value of z is 6
Hi if u could help me that'd be great
Answer:
1 hour and 45 minutes
and 1 hour
Step-by-step explanation:
x= run
y= walk
5x+2.5y = distance
5x+2.5(1.5)=12.5
solve for x
5x=8.75
x=1.75
1.75 in hours is 1 hour and (60*.75)=45
1 hour and 45 minutes
" If the marathon race participant ran for 2 hours, how many hours did the participant walk?"
We use the same equation
5x+2.5y=distance
we'll assume that they till walked 12.5 miles
which means that
5(2)+2.5y=12.5
solve for y
2.5=2.5y
y=1
1 hour
Answer:
Everybody, everybody
Get out on the floor
It can get a little crazy
When the kick hits the floor
Make a scene Make a scene
Nobody can ignore
Don't knock it, til you rock it
We can't take it no more!
Bring the lights up!
Bust the doors down!
Dust yourself off,
Shake it up!
Shake it up!
DJ set it off!
Take it up a notch
All together now!
Shake it up!
Shake it up!
Step-by-step explanation:
A price is decreased by 15% and is now £731
work out the original price
.
Answer:
840.65
Step-by-step explanation:
5.
Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(–3, –6), (–1, –6), (5, –6), (8, –6)}
Which of the following is true?
A. choice a.
B. choice d.
C. choice c.
D. choice b.
Answer:
The answer is D. choice B. The coordinate point CAN share the same y point but, CANNOT share the same x point
Step-by-step explanation:
For all values of x, y = - 6
Your function:
y = - 6
A ball is shot from a cannon into the air. The equation that's gives the height (h) of the ball of any time (t) is: h(t)= -16t^2 + 40t + 1.5
Answer:
26.5 units
Step-by-step explanation:
The height of the ball at any time t is given by :
[tex]h(t)= -16t^2 + 40t + 1.5[/tex] ...(1)
We need to find the maximum height of the ball.
For maximum height, put [tex]\dfrac{dh}{dt}=0[/tex]
i.e.
[tex]\dfrac{d( -16t^2 + 40t + 1.5)}{dt}=0\\\\-32t+40=0\\\\t=\dfrac{40}{32}\\\\t=1.25\ s[/tex]
Put t = 1.25 in equation (1) to find the maximum height.
So,
[tex]h(t)= -16(1.25)^2 + 40(1.25) + 1.5\\\\=26.5\ units[/tex]
So, the maximum height reached by the ball is 26.5 units.
A triangle has an area of 72 cm² and a base of 10 cm². What is the height of the triangle?
Answer:
14.4
Step-by-step explanation:
Area= 72 cm^2
Base= 10 cm
height= ?
Area= base x 1/2 x height
72 = 10 x 1/2 x h
72= 5 x h
72/5 = h
h= 14.4
PLS HELP The width of Ben's rectangular family
room is 3 feet less than the length.
The perimeter is 70 feet. What is the
length of the family room?
Answer:
19 feet
Step-by-step explanation:
The perimeter is calculated by multiplying the sum of length and width by 2
width is 3 less than length so if we call the width x the length would be x + 3
2×(x + x + 3) = 4x + 6 and
4x + 6 = 70 subtract 6 from both sides
4x = 64 divide both sides by 4
x = 16
The length is x + 3 so the answer is 19 feet
Resuelve
Ritmo de cambio. Cada uno de los siguientes datos es la pendiente de una recta que representa los ingresos diarios y en términos del tiempo X en días. Utilizar la pendiente para interpretar
la variación en los ingresos correspondiente a un incremento de
un día
a). m =800
b). m =250
c). m = 0
Answer:
800m
Step-by-step explanation:
porque incremento de un día
(a) Reflect the point (7, -9) across the y-axis:
(b) Reflect the point (7, -9) across the x-axis:
Answer:
(-7,-9) and (7,9)
Step-by-step explanation:7,-9 so we do across the x so you need a graph for this now x goes left so we plot the coordinates in the third box 7,-9 is in the 4 box so after we plotted that you can see it reflects.Now y coordinate since the y line goes up we plot the coordinates on top of the 4 box where our original coordinates stay now it should be 7,9 the y becomes positive which is 9.
This is not a web answer i answered myself took me some time!
WILL GIVE BRAINLIST DUE IN A COUPLE MINS
2x^2+2x is it simplified
Answer:
Yes it is simplified
Step-by-step explanation:
2x^2 is not a like term to 2x because 2x does not have an exponent. Therefore, you cannot add 2x to 2x^2. So it is as simplified as it can be at this point
plz answer only if you know ur correct. the best answer gets brainliest
Answer:
b and e are correct and f maybe
Step-by-step explanation:
Solve for the missing side, then give each trig ratio a fraction in simplest form
Answer: sin L= 3 cos L= 3 tan L= 3 sin M= 5 cos M= 5 tan M= 5
Step-by-step explanation:
im just like that
could someone please help and fast?
Answer:
141
Step-by-step explanation:
Answer:
141
Step-by-step explanation:
Find the third angle in the triangle and using the rule that all supplementarly angles are 180 degrees, subtract the third angle from 180.
180-87-54=39, 39 is the third angle of the triangle
180-39=141 degrees, x= 141
luca sells muffins and juice boxes. muffins are $1.50 each and jucie boxes are $1.25 each. write an algebraic expression for the total income luca received from the sale of muffins and juice boxes
Answer:
1.5m+1.25j
Step-by-step explanation:
m equals the number of muffins sold, and because each muffin sells for $1.50, 1.5m represents the income made from the muffins.
Same thing with the juice boxes, j equals the number of juice boxes sold, and because each juice box sells for $1.25, 1.25j represents the income made from the juice boxes.
Add the income from both of them to get the total income, and you get 1.5m+1.25j.
