Dida bought a scratch ticket for $2.00. The potential payoffs and probability of those payoffs are shown below.
Value Probability
$0.00 0.15
$0.50 0.50
$1.00 0.20
$2.00 0.10
$10.00 0.05
What is the expected value for the scratch ticket that Dida bought?
$1.50
$1.15
$0.50
$2.00
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Answer:
(b) $1.15
Step-by-step explanation:
The expected value is the sum of products of payoff and probability:
$0×0.15 +0.50×0.5 +1.0×0.2 +2.0×0.1 +10×0.05
= $0 +0.25 +0.20 +0.20 +0.50
= $1.15 . . . . expected value of the scratch ticket
PLEASE HELP ME i will give brainliest, points
Answer:
[tex]x(t) = 3 + t[/tex]
make t the subject:
[tex]t = x - 3[/tex]
for y :
[tex]y(t) = - {t}^{2} \\{ \boxed{ \boxed{ y(t) = - {(x - 3)}^{2} }}}[/tex]
Elsa and Anna share $2000 in the ratio 5 : 3. How much does each of them get?
Answer:
Let them be "x"
5x+3x= $2000
8x= $2000
x= 2000/8
x= 250
5* 250= 1250.
3*250= 750.
If tan (t) = -1.4 what is the tan(-t) ???
If f(x) = 3x +5/x what is f(a+2)?
There are 80 cupcakes to be sold at school for a
fundraiser.
1/4 were chocolate
1/5 were vanilla
The rest were strawberry flavored. How many
cupcakes were strawberry flavored?
Answer:
44
Step-by-step explanation:
Let S = strawberry count
Chocolate = 1/4 * 80 = 20
Vanilla = 1/5 * 80 = 16
Total = C + V + S
80 = 20 + 16 + S
80 - 20 - 16 = S = 44
The square root of 89 is rational or irrational and why
Step-by-step explanation:
√89 is irrational number because it is not a perfect square
96 of the 224 participants in dub activities are residents. What is the ratio of nonresidents to residents who participate in club activities? Write the ratio in lowest terms
as a fraction or with a colon
Identify the steps needed to evaluate the expression below.
8×1+(8+9)−38÷2×5
25-2[9-7(3-4)] Absolute value
Answer:
25-2 [9-7 (3-4)]
=25-2 [9-7 (-1)]
=25-2 [9+7]
=25-2 [16]
=25-32
=-7
Absolute value -7=7
Step-by-step explanation:
Hello can someone please help me in these question please?
Answer:
Answer: B
Step-by-step explanation:
[tex]f(x) = \frac{12}{x} - 18 \\ [/tex]
let its inverse be m :
[tex]m = \frac{12}{x} - 18 \\ \\ m + 18= \frac{12}{x} \\ \\ x = \frac{12}{m + 18} \\ \\ { \boxed{ \boxed{f {}^{ - 1}(x) = \frac{12}{x + 18} }}}[/tex]
2. Find the measure of each exterior angle of regular polygons (any two). (2x2=4).
(a) Pentagon (b) Heptagon (C) Decagon (d) 18-gon (e) 20-gun
Answer:
a) 72
b) 60
c) 51.43
d) 24
Step-by-step explanation:
The measure of each exterior angle of a regular polygon =
n
360
⇒ The measure of each exterior angle of a regular pentagon =
5
360
=72
⇒ The measure of each exterior angle of a regular hexagon =
6
360
=60
⇒ The measure of each exterior angle of a regular heptagon =
7
360
=51.43
⇒ The measure of each exterior angle of a regular polygon of 15 sides =
15
360
=24
Let's suppose we conduct a hypothesis test about the mean value of something, and determine that we should reject the null hypothesis. What does that mean?
a. Our hypothesized mean has been proven incorrect
b. The difference between our sample mean and our hypothesized mean was most likely due to random chance.
c. The difference between our sample mean and our hypothesized mean was statistically significant.
d. The difference between our sample mean and our hypothesized mean was not statistically significant.
Answer: Choice C.
The difference between our sample mean and our hypothesized mean was statistically significant.
=========================================================
Explanation:
The null hypothesis is always set up in a way to state the following: "The mean mu is equal to some value"
The mu is a greek letter often used as the population mean symbol. The actual symbol itself looks like this [tex]\mu[/tex]
When we reject the null, we reject the idea that the mu is whatever stated value we said in the null. So we must go with the alternative hypothesis.
The sample mean we computed (xbar) is different enough from the mu value that we're able to make such a rejection. We consider this statistically significant, which is another way of saying that such a difference is not simply due to random chance.
Brainlyist!!!! In which expression should the exponents be multiplied?
Answer:
If i'm not mistaken it's the last one, D. [tex]4^5 * 4^2 = 4^7[/tex]
Miss Marple’sgrandfather passed away and she attended the reading of the will. The estate was valued at $8,424,000. It was decided that 23of the estate would be given to his children. Of the remainder, 15would be used to create a scholarship for mathematics majors at a local university and the rest would be divided evenly among his fourgrandchildren, of which Miss Marplewas one. a.How much money was used for the scholarship?[3 pts]b.What fractionof the estate did Miss Marpleend up inheriting?
The amount of money used for scholarship and the fraction of the estate gotten by Miss Maple are :
Scholarship amount = $561,600Fraction gotten by Miss Maple = 1/30The entire fraction of the estate = 1/1
Fraction given to children = 2/3
Fraction left = Total - fraction given to children
Fraction left = 1/1 - 2/3 = 1/3
For scholarship :
1/5 of fraction left :
1/5 of 1/3 = 1/5 × 1/3 = 1 /15
Fraction Given to grand children :
1/5 - 1/15 = 2/15
Amount of money used for scholarship :
1/15 × 8424000 = $561,600
B.)
Since There are four grand children and it was equally shared among them:
Miss Maple is one of the grand children:
Fraction each grandchild gets is :
2/15 ÷ 4
2/15 ÷ 4/1
2/15 × 1/4 = 2/60 = 1/30
Hence, miss Maple will get 1/30
Learn more : https://brainly.com/question/18109354
Elliot invests 15000 in an investment certificate that pays 2% compounded annually. How much interest will he have earned in 2 years?
$15300
Second year:$15606
Step-by-step explanation:First year:300 is 2% of 15000, so we add that. The result we have is $15300.
Second year:306 is 2% of 15300, so we add that to the original value. The result is $15606.
Side note:
All you need to know is the Interest Rate Formula: [tex]p(1+r/100)^n[/tex]. By the way, that's the simple compound interest rate formula. The simple interest rate formula is [tex]p+(r/100)^n[/tex].
A family of 5 monkeys eats 2 bananas per day each. How many bananas do they eat in 4 days?
Answer:
8
Step-by-step explanation:
A family of 5 monkeys eat 2 bananas a day.
to figure out how much the monkeys will eat in 4 days
multiply 2 by 4.
make sure the question is not for each monkey or the answer will be
(2 by 4) by 5. witch would be 40
however for the case your saying the answer would be 8
Which of the following represents
hine times the sum of eight
and a number x
Answer:
9(8 + x)[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]
Help please!
I’m in math and I suck at this kind of stuff
Answer:
1 Refelction in the diagnal axis, translation to the right
Step-by-step explanation:
Im a bit unsure about this, question is a bit vauge
help me out pleaseeeeeeeee
Answer:
x = 55
Step-by-step explanation:
To find the value of x
3x - 35 = 130 (vertically opposite angles are equal)
3x = 130 +35
3x = 165
x = 165/3
x = 55
how to write 8/15 as a decimal?
Answer:
0.53
Step-by-step explanation:
Basically just go to your calculator and put in 8 divded by 15
Find the slope of the line through the points (1,−8) and (−9,−10). Provide your answer as a fraction simplified in lowest terms.
Answer:
1/5
Step-by-step explanation:
-8-(-10) 2 1
---------- = ------ = --------
1-(-9) 10 5
Answer:
1/5
Step-by-step explanation:
21 is what percent of 175?
Step-by-step explanation:
21/ 175 ÷ 100%
= 0.12 × 100%
= 12%
Add the fractions and show me step by step on how to do it
7/24 + 4/6
23/24
7/24+4/6
Reduce the fraction by 6
7/24+2/3
Write all numerators above the least common denominator 24
7+16/24
Calculate
23/24
find the mean of 31.6, 34.5, 29.8, 12,1
Answer:
27
Step-by-step explanation:
To figure out the mean of a group of numbers, one must add the numbers together and divide by the number of terms.
31.6 + 34.5 + 29.8 + 12.1 = 108
There are four terms in the group of numbers.
108 / 4 = 27
Therefore, the mean is 27.
The equation (x - h)^2 + (y - k)^2 = r^2? defines a circle with radius r and center (h, k). Find the center and radius AND graph the circle on the x-y coordinate plane. (x - 1)2 +(y + 3)2 = 25.
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Answer:
center: (1, -3)radius: 5Step-by-step explanation:
Comparing the two given equations, we see ...
h = 1
k = -3
r = √25 = 5
The center is (1, -3), and the radius is 5.
Penny power walks 4 and 1/4 miles in 2 hours how many miles does he walk in one hour
Answer:
Penny will walk 2 and 1/8 miles in one hour.
Step-by-step explanation:
4 and 1/4 divided by two = 2 and 1/8
Answer:
2 1/8
Step-by-step explanation:
division
What is the approximate value of each radical expression to the nearest tenth?
Drag and drop the answer into the box to match each radical expression.
Answer:
19−−√ 4.4
23−−√ 4.8
37−−√ 6.1
Step-by-step explanation:
feel free to give me brainliest
The value of the radical expressions is given below:-
√19 = 4.4
√23 = 4.8
√37 = 6.1
What is a radical expression?Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
The radical expression is one in which all the numbers are represented in the form of the roots.
The given expressions are √19,√23, and √37. The value of the radical expressions are given below:-
√19 = 4.4
√23 = 4.8
√37 = 6.1
Therefore, the answers are given above.
To know more about radical expressions follow
https://brainly.com/question/738531
#SPJ2
PLEASE HELP ME! im struggling :/
2. Which statement is true for the graph of f(x) = 2x3 – 6r2 – 48x + 24?
Answer: B
Step-by-step explanation:[tex]y=f(x)=2x^3-6x^2-48x+24\\\\y'=6x^2-12x-48=6(x^2-2x-48)=6(x-4)(x+2)\\\\y''=12x-12\\\\if\ x=4\ then\ y'=0\ and\ y''=12*4-12 >0 \ \\==>\ a \ max , y=2*4^3-6*4^2-48*4+24=-136\\\\if\ x=-2\ then\ y'=0\ and\ y''=12*(-2)-12 \ <\ 0\\==> a\ min\ y=2*(-2)^3-6*(-2)^2-48*(-2)+24=80 \\\\\\Answer\ B[/tex]
Determine whether the following events are mutually exclusive:
Choosing a red card or a spade out of a standard deck of cards.
Answer:
non mutually exclusive event
Step-by-step explanation:
im not sure on this tho
