Answer:
£29
Step-by-step explanation:
20% = 0.2
Take 145 times 0.2 = £29
So, he saves £29
A discrete random variable may take on only a countable number of distinct values such as 0,1,2,3,4,...
Definition of discrete random variable-Discrete random variables are usually (but not necessarily) counts. If a random variable can take only a finite number of distinct values, then it must be discrete. Examples of discrete random variables include the number of children in a family, the Friday night attendance at a cinema, the number of patients in a doctor's surgery, and the number of defective light bulbs in a box of ten.
Explanation-The probability distribution of a discrete random variable is a list of probabilities associated with each of its possible values. It is also sometimes called the probability function or the probability mass function.
Example:-
The cumulative distribution function for the above probability distribution is calculated as follows:
The probability that is less than or equal to is 0.1,
the probability that is less than or equal to 2 is 0.1+0.3 = 0.4,
the probability that is less than or equal to 3 is 0.1+0.3+0.4 = 0.8, and
the probability that is less than or equal to 4 is 0.1+0.3+0.4+0.2 = 1.
So, finally we can conclude that discrete random variables can only take a finite number of values.
To learn more about discrete random variables visit:
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Add fractions with unlike denominators
Jordan bought 3 bottles of water at the amusemen park. If the total cost of the water was $6, which equation could be used to find the cost of each bottle of water?
PLEASEEE HELP ME I NEED THIS FOR MY EXAMMM
5) To find the slope of the trend line below, Riley chose
the points (1, 35) and (2, 25).
If you invested $2000 in an account that paid 8% annual Interest compounded quarterly, how much would the account be worth in 10 years?
Round to the nearest hundredth/cent.
Answer: A = $4,439.28
Rounded would be $4,439.3
Step-by-step explanation:
What is the height, x, of the equilateral triangle?
Given:
The figure of an equilateral triangle with side length 14 in.
To find:
The height x of the equilateral triangle.
Solution:
We know that the height of an equilateral triangle is:
[tex]h=\dfrac{\sqrt{3}}{2}a[/tex]
Where, a is the length of side of the equilateral triangle.
It is given that the height of the triangle is [tex]x[/tex].
Putting [tex]a=14,h=x[/tex] in the above formula, we get
[tex]x=\dfrac{\sqrt{3}}{2}(14)[/tex]
[tex]x=\sqrt{3}(7)[/tex]
[tex]x=7\sqrt{3}[/tex]
Therefore, the height of the triangle is [tex]x=7\sqrt{3}[/tex].
A. Yes
B.no
Answer: yes!!!!!!!
Grace used 1,000 milliliters of apple juice to make one batch of fruit punch. How many liters of apple juice does Grace need to triple the recipe?
Answer: 3 L
Step-by-step explanation:
Given
Grace uses 1000 mL of apple Juice to make one batch of fruit punch
If she triples the recipe, then the Juice used is also tripled i.e.
[tex]\Rightarrow 3\times 1000=3000\ mL[/tex]
In littres, it is [tex]3000\ mL=3\ L[/tex]
Which cords are congruent
Answer:
A chord is a line segment with endpoints on the circle. le Conjecture tells us that the central angles determined by the congruent chords are equal in measure
Step-by-step explanation:
Tell whether x and y
are proportional. If so, find the constant of proportionality.
8 = xy
Answer:
Step-by-step explanation:
y is inversely proportional to x; if x increases, y decreases.
Without more info it is not possible to find the constant of proportionality. Recheck the original numerical values. Think: 8 = kxy. You need to know x and y to find the value of k.
Please help me FAST
Answer:
I believe it's either equation one or three. hope that helps :)
Tanya has a $50 gift card to spend on Amazon. She wants an airpod case cover for $12.
She also wants to buy some bracelets for $9.50 each. How many bracelets can she buy
without going over?
Answer:
She can buy 3 bracelets.
Step-by-step explanation:
$50 (Total price) - $12 (Airpod case) = $38
$38 - $9.50 (Bracelets) = $28.5
$28.5 - $9.50 = $19
$19 - $9.50 = $9.5
A charity is selling brooms to raise funds. Each box has 10 brooms. Each broom is sold for $ 15 . If the charity earns $ 50 profit for each box of brooms, how much does each box of brooms cost the charity, in dollars?
Answer:
Total cost= $100
Step-by-step explanation:
Giving the following information:
Each box has 10 brooms. Each broom is sold for $ 15
The charity earns $ 50 profit for each box of brooms.
First, we need to calculate the total revenue per box:
Total revenue per box= 10*15= $150
Now, the total cost:
Total cost= total revenue - total income
Total cost= 150 - 50
Total cost= $100
1 1 - 12 A vehicle uses 8 gallons of gasoline to travel 2 miles. At this rate, how many miles can the vehicle travel per gallon of gasoline?
Answer:
4 gallons of gasoline per 1 mile
Step-by-step explanation:
Answer:12 miles per gallon.
Write an equation of the line with a slope of -3 and a y-intercept of 0
Answer:
-3/9=07+90
Step-by-step explanation:
Answer: y = 0x+3 or y = 3
The slope is 0 and the y intercept is 3. So m = 0 and b = 3.
Plug those into y = mx+b to get y = 0x+3, and that simplifies to y = 3.
This graphs out a horizontal line that passes through the two points (0,3) and (1,3).
Liz goes on holiday to South Africa
Liz wants to change £850 into south african rand
she wants to get as many 200 rand notes as possible
The exchange rate is £1=18.53 rand
Work out the greatest number of 200 rand notes that liz can get for £850
Answer:
82 notes
Step-by-step explanation:
The computation is shown below:
Given that
£1= 18.53 rand
and since Linz has £850 so he would get the equivalent of
= $890 × 18.53
= 16,491.7 rands
Now he wants the 200 rand notes so we considered it as the highest note
So, the greatest no of 200 notes would be
= 16,491.7 ÷ 200
= 82.45
= 82 notes
What do I do in order to solve this problem?
Given ^ABC~^EFD, find the value for x.
Answer:
4
Step-by-step explanation:
2x-3 = 5
2x = 8
x = 4
Hope this helps
I hope this helps you
in similar triangle sides are can be rate
ABC~EFD
AB/EF=BC/FD=AC/ED
5/2x-3=6/FD=4/9
9.5/4=2x-3
11.25+3=2x
2x=14.25
x=7.125
Hello! Could y’all please explain why this is Decay and not growth?
Answer:
This is an Exponential Decay
Step-by-step explanation:
A = 1200(0.85)⁶
The above expression is an Exponential Decay because 0.85 is less than 1
The formula for Exponential Decay
= y = a (1 - r)^t
We equate both equation together
Where
a = 1200
1 - r = 0.85
t = 6
Solving for r
1 - r = 0.85
r = 1 - 0.85
r = 0.15
Converting to Percentage
r = 15% decay rate
City A and City B are 540 miles apart on a map. The scale on the map is 1inch:60 miles. How many inches apart on the map should City A and City B measure. Explain how you would solve this problem. What would the final answer be?
Answer: 9 inch
Step-by-step explanation:
Given
Distance between city A and city B is 540 miles
Scale on the map is 1 inch: 60 miles i.e. 1 inch on the map is equivalent to 60 miles in the real situation
suppose the distance between city A and B on the map is x
[tex]\therefore \dfrac{1}{60}=\dfrac{x}{540}\\\\\Rightarrow x=\dfrac{540}{60}=9\ in.[/tex]
Therefore, the distance between city A and B is 9 in.
4.
Which equation is an identity?
A. 5y + 5 = 5y – 6
B. 8 – (6v + 7) = –6v – 1
C. 3w + 8 – w = 4w – 2(w – 4)
D. 6m – 6 = 7m + 9 – m
Answer: C. 3w + 8 – w = 4w – 2(w – 4)
(3w - w) + 8 = 4w - 2w -2(-4)
2w + 8 = 2w + 8
Step-by-step explanation:
Hopefully a bot doesn't answer this... Also, you do not have to write explanation.
Answer:
i do not know but i will let you know when i do
Step-by-step explanation:
help please with math!
Answer:
1/2
Step-by-step explanation:
If you do this:
20:2=10
14:2=7
12:2=6
You get dimensions of smaller triangle which is a half from bigger one.
Answer:
scale factor is 1/2
Step-by-step explanation:
notice that the sides of ΔABC are one-half of the length of the sides 0f ΔDEF
Solve for x "Enter the value for x that makes this
true.
– 2 = – 1/2 ( - 12x – 10)
can someone please help me on Carnegie??
Answer:
First tell me what's Carnegie
Help me, pretty please
Answer:
The surface area is 8
and volume is 12.
Let me know if wrong!! :))
Step-by-step explanation:
The difference of c and 7 is less than or equal to 17.
| c - 7 | 《 17
- 17 《 c - 7 《 17
add sides 7
- 17 + 7 《 c - 7 + 7《 17 + 7
simplification
- 10 《 c《 24
Answer:
c - 7 ≤ 17
c ≤ 24
Step-by-step explanation:
The difference of c and 7 can be written as c - 7 or 7 - c.
Now, since c - 7 is less than or equal to 17, you need to add ≤ to imply that it's less than or equal to 17.
As always, write the 17 on the other side. Now you have an inequality.
If you just need the equation, it's c - 7 ≤ 17.
But if you want to solve for c, it would be c ≤ 24.
(bring the like terms together and isolate c.)
2
1 point
Shauna buys a full golf club set for $1,145.87 on a 6 month installment plan. If her monthly
payments are $245.82. How much is the finance charge?
Answer: $329.05
Step-by-step explanation:
Since she pays $245.82 monthly and she is paying for 6 months, the amount paid will be:
= $245.82 × 6
= $1474.92
Since she buys the full golf club set for $1,145.87, then her finance charge will be:
= $1474.92 - $1,145.87
= $329.05
The finance charge is $329.05
HELP ME PLEASE AND PLEASE ATTACH THE ANSWER BELOW (NO LINKS!!)
Answer:
D
Step-by-step explanation:
Answer:
1885
Step-by-step explanation:
Volume = Base x Height
Suppose that $3500 is placed in an account that pays 16% interest compounded each year. Assume that no withdrawals are made from the account. Follow the instructions below. Do not do any rounding.
Simplify using i.
3+2i
———
6+5i