When buying a candy bar, there is a 20% chance that it will also include a coupon for a second candy bar. A student wants to determine the probability that, if she buys 7 candy bars, more than 2 will include a coupon. To do this, she uses a random number table to pick 7 numbers from 1 to 5. She lets 1 represent a candy bar with a coupon and numbers 2 through 5 represent a candy bar without a coupon.. She repeats this for a total of 16 trials. The results are shown in the table.
Answer:
A1 = more than two 1s
A2 = 0.4286
Step-by-step explanation:
hope this helps!
A 256- gallon barrel of radioactive Urikium is spilled at a factory. The entire area is evacuated. Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is to toxic for any clean-up efforts, so residents will just have to wait for the Urikium to evaporate. Fortunately, Urikium has a half-life of only three hours. That means that half of the Urikium will evaporate every three hours
Answer:
21 hours
Step-by-step explanation:
Since 2^8 = 256, that means it will take 7 half-lives to become two gallons
7 half-lives * 3 hours = 21 hours
256, 128, 64, 32, 16, 8, 4, 2
Answer:
Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is too toxic for any clean-up efforts. She residents will
Step-by-step explanation:
To solve half-life problems, you use the equations:
f(t) = T0 (1/2)^(t/t1/2). where T0 is the initial mass and T1/2 is the half-life.
So we get f(20)= 5 = T0•(1/2) ^ 20/11
T0 = 17.63 mg
For the second part of the question, we plug 0.5 mg into the equation:
0.5 = 17.63 • (1/2)^ t/11
t = 56.5 days
A third of a number is 21. What is the number?
Answer: 63
Step-by-step explanation: 21+21+21
Answer:
63
Step-by-step explanation:
21*3= 63
63*1/3= 21
Aiden walked 2 miles in 2/5 hour. Find the unit rate.
Answer:
1 mile- 2/10 hr
Step-by-step explanation:
2 miles- 2/5 hr
1 mile- 2/10 hr
(divide by 2)
hope this helped :)
What is the value of 419 - 2)+72+ 12 HURRY PLEASE
Answer:501
Step-by-step explanation: So basically you take 419-2 now thats 417+72=489+12=501
What is the answer to this?
Answer:
[tex]<F+<K+<H+<G=360[/tex]°
[tex]90[/tex]°[tex]+3x+90+2x=360[/tex]°
⇒[tex]5x+80=360\\[/tex]
⇒[tex]5x=360-+80[/tex]
⇒[tex]5x=-+80[/tex]
⇒[tex]x=\frac{-+80}{5}[/tex]
⇒x=36°
3x=3×36=108°
2x=2×36=72°
FG≈HG=17
hope it helps...
have a great day!!
I need help with geometry homework
6th grade math help me pleaseee
-8y+4
-2y-6y=-8y
7-3=4
-8y+4
HELP QUICK I NEED AN ANSWER RN PLS
Answer:
r = 3.7 cm
Step-by-step explanation:
19.02 = 1/2π(2radius) + diameter
expanding:
19.02 = 1/2(3.14)(2r) + 2r
19.02 = 3.14r + 2r = 5.14r
r = 19.02/5.14 = 3.7 cm
plz have explanation with answer
I will give you BRAINLIEST for the correct answer
Answer:
The correct answer is A. 18 cm2
Which product is irrational?
A. 2x50
B. 64x4
C. 9x49
D. 10x8
Answer:
i don't see in product in here that is irrational
Step-by-step explanation:
What is the value of BD
Well, by the segment addition postulate, 3x + 5 + 5x - 7 = BD, so BD = 8x - 2.
Because you didn't include the instructions in the picture, I can't be sure if this is a rhombus or a rectangle, but if it is either, then 3x + 5 = 5x - 7, and x = 6
If this is true, then BD = 48 - 2 = 46, but only if the shape is either a rhombus or rectangle (or both would make it a square).
Please help with the first one. Also could you tell me if the other one is correct? And if not could you correct it please.
Answer:
Step-by-step explanation:
start the line from the 75 going to the 80. thats where you put the line on the thing. and im not sure with the 2nd one look it up or find someone to help u:)
A park bench is located 16 3/4 feet due north of an elm tree a fountain is located 9 1/2 feet due south of the same elm tree
What is the distance in feet between the park bench and the fountain?
A 26 1/4 ft
B 25 1/4 ft
C 25 2/3 ft
D 26 ft
Please help me! thank you alot..!
Answer: A
Step-by-step explanation: Take 16 and 9 add them u get 25 then u take the fractions turn the 1/2 into 2/4 and add them you then get 1 1/4
Solve the following inequality 10>2x+5
Answer: 2.5 is greater than x
Step-by-step explanation:
The figure is made up of a square and a rectangle. Find the area of the shaded region.
m2
please help first one correct gets barlyest
Answer:
[tex] 10 \: { \: m}^{2} [/tex]
Step-by-step explanation:
area of the shaded region = Area of triangle formed in rectangle with base (10 - 6 = 4) 4m and height 2 m + Area of triangle formed in square with base 2 m and height 6 m
[tex] = \frac{1}{2} \times 4 \times 2 +\frac{1}{2} \times 2\times 6 \\ \\ = 4+6 \\ \\ = 10 \: { \: m}^{2} [/tex]
Answer:
shaded region = 10 m squared
Step-by-step explanation:
Area square = 6x6 = 36 Area reatangle 4x2 = 8
both areas = 44
Now lets subtract some white parts to obtain the shaded parts
1/2 of 4x6 = 12
1/2 of 6x6 = 18
1/2 of 4x2 =4
12+18+4= 34
44-34 = 10
help !!!! please serious answers on or get reported in
;))
answer: 1.75
say you have 1 dollar and 3 quarters, this would give you $1 dollar and 75 cents =1.75
this math is easy just don't understand this question
Answer:
156 ft²
Step-by-step explanation:
the shaded area is a trapezoid
The area of the trapezoid: (6 + 18) × 13 ÷ 2 = 156
A store offers a discount of $43 when you buy a painting for $100. What is the percent discount?
PLS HELP
is calculating his expenses from his work trip to San Francisco. Below is the expense log he kept while traveling.
Expense Amount of Expense
Airfare $379.00 round trip minus $15.00 movie on plane
Hotel $154.00 per night × 3 nights
Dinner $65.00 plus $13.00 tip
Car Mileage $0.55 per mile × 63 miles
Keion will submit all of the expenses to his company for reimbursement except for the movie on the plane. How much will he be reimbursed for?
A
$784.65
B
$923.65
C
$925.65
D
$938.65
Answer:
D
Step-by-step explanation:
379.00 - 15.00 + 154.00 x 3 + 65.00 + 13.00 = 904
0.55 x 63 = 34.65
34.65 + 904 = 938.65
Answer:
Your answer is D
Step-by-step explanation:
because 379-15+154x3+65+13+0.55x63=938.65
a classroom measures 32 ft long, 25ft wide, and 9ft high. The comb9ned area of doors and windows is 140ft. What is the remaining area of the four walls of the room
Answer:
886 ft^2
Step-by-step explanation:
2×l×h+2×b×h=2h(l+b)
2×9(32+25)=18×57=1026 ft^2
1026-140=886ft^2
Solve the equation. 1/2y+4=2 4 –4 –1 12
Answer:
y = - 4Step-by-step explanation:
¹/₂y + 4 = 2 {subtract 4 from both sides}
¹/₂y = -2 {multiply both sides by 2}
y = -4
hii please help i’ll give brainliest
Answer:
II
Step-by-step explanation:
Answer:
quadrant 2
Step-by-step explanation:
What is the mean price of $29 $58 $15 $129 $75 $22
An asteroid hit the earth and created a huge round crater. Scientists measured the distance around the crater as 26 miles. What is the area of the crater?
Answer:
53.8 mi^2
Step-by-step explanation:
First we need to determine the radius of the crater. The circumfence formula is C = 2(pi)r, and here C = 26 miles. Thus,
26 mi = 2(pi)r, so that
26 mi
r = ------------ = 4.13 miles
2pi
Then the area of the crater is A = (pi)r^2, or:
A = 3.14(4.13 mi)^2 = 53.8 mi^2
Solve for x: 2(2a+3)-6=5a+2
Answer:
a=-2
We move all terms to the left:
2(2a+3)-6-(5a+2)=0
We multiply parentheses
4a-(5a+2)+6-6=0
We get rid of parentheses
4a-5a-2+6-6=0
We add all the numbers together, and all the variables
-1a-2=0
We move all terms containing a to the left, all other terms to the right
-a=2
a=2/-1
a=-2
Step-by-step explanation:
We move all terms to the left:
2(2a+3)-6-(5a+2)=0
We multiply parentheses
4a-(5a+2)+6-6=0
We get rid of parentheses
4a-5a-2+6-6=0
We add all the numbers together, and all the variables
-1a-2=0
We move all terms containing a to the left, all other terms to the right
-a=2
a=2/-1
a=-2
Please like and give me Brainliest!
Answer:
a = -2
Step-by-step explanation:
2(2a+3)-6=5a+2
distrubute the 2
4a + 6 - 6 = 5a + 2
combine like terms
4a = 5a + 2
-5a -5a
-a = 2
a = -2
I HELP NEED ASAP PLZ HELP ME
Step-by-step explanation:
hope it helps.........
Answer:
The answer is 6.
Step-by-step explanation:
All you need to do is turn 33 and 44 into a fraction ([tex]\frac{33}{44}[/tex]). Then you need to simplify it and it's simplest form is [tex]\frac{3}{4}[/tex]. then you up the fraction to [tex]\frac{6}{8}[/tex] and that's your answer.
I need the answer to this
Answer:
1
Step-by-step explanation:
12/4 + 2 * 1/2 - 3 = 1
Need help quick! The problem should be attached as a picture!
Answer:
14
Step-by-step explanation:
Answer:
14
Step-by-step explanation: