3 times 2 2/5. please help
Answers
Answer:
7.2, which equals to 7 1/2
Step-by-step explanation:
Answer:
7 2/10
Step-by-step explanation:
look at the pic for the steps
Related Questions
r/3 - 9 >= -2
how do i do this?
Answers
Answer:
r >=21
Step-by-step explanation:
r/3-9>=-2
r/3>= -2+9
r/3 >= 7
r>=7*3
r>=21
write two prime numbers whose difference is 10?
Answers
Prime numbers : A whole number greater than 1 that can not be made by multiplying other whole numbers Prime numbers between 1 to 100 : 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97 So, The two numbers whose difference is 10 are 13 and 23 23-13=10
A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30 What score is necessary to reach the 75th percentile? Select the closest answer
Answers
Answer:
A score of 150.25 is necessary to reach the 75th percentile.
Step-by-step explanation:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30.
This means that [tex]\mu = 130, \sigma = 30[/tex]
What score is necessary to reach the 75th percentile?
This is X when Z has a pvalue of 0.75, so X when Z = 0.675.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]0.675 = \frac{X - 130}{30}[/tex]
[tex]X - 130 = 0.675*30[/tex]
[tex]X = 150.25[/tex]
A score of 150.25 is necessary to reach the 75th percentile.
Can you help me answer this? please
Answers
Answer: 1859.5 mini bears
Step-by-step explanation:
From the information given in the question,
10 mini bars = 12.1 grams
10 regular bars = 23.1 gram
1 super bear = 2250 grams
To eat enough mini bears to match the super bears, the number that it'll take will be:
Since 10 mini bars = 12.1 grams
1 mini bear = 12.1 grams / 10 = 1.21 gram
Since 1 super bear = 2250 grams, the number of mini bears needed to equate this will be:
= 2250/1.21
= 1859.5 mini bears
Carol had a $20 bill.
She knew her
groceries were going to
cost $16.75. She also
wanted a soda for $2.20.
How much money will she
have left after her trip to
the store?
Answers
Answer:
$16.75 + $2.20 = $18.95
$20 - $18.95 = $1.05
Step-by-step explanation:
Brainliest please
You earn $42 for washing 7 cars. How much do you earn for washing one car? How much do you earn for washing 3 cars? How much do you earn for washing 5 cars?
Answers
Answer:
1 car = $6 ; 3 car = $18 ; 5car = $30
Step-by-step explanation:
$ 42 = 7 cars
so 1 car = $42÷7 = $6
so 3 cars = 3 × $6 = $18
so 5 cars = 5 × $6 = $30
Hope this helps you.
Help&EXPLAIN
Don’t use for points
I’ll report
Answers
Answer:
x = 20
Step-by-step explanation:
The picture shows that there is a right angle (this is indicated by the square in between the two straight lines)
every right angle has a total measure of 90 degrees
knowing this we can say: x + 70 = 90 or x = 90 - 70
either way, you would solve this to get x = 20
MARKING BRAINLEIST IF CORRECT AND QUICK
Answers
Answer:
Step-by-step explanation:
D)
Hope that helps!
what's the radius for r=13 mm?
Answers
Step-by-step explanation:
14 mm³ because the radius is this
You are given an isosceles trapezoid ABCD with median XY. Complete the following.
AX = 8, CD = __________
I'll mark brainliest
Answers
Answer:
CD=16
Step-by-step explanation:
If XY is median then CD equals 16
Length of CD = 16 .
What is Isosceles trapezoid?An isosceles trapezoid can be defined as a trapezoid in which non-parallel sides and base angles are of the same measure.
Given,
Isosceles trapezoid ABCD with median XY.
Median cuts the non-parallel lines of trapezoid in two equal parts.
then,
AX = 8
AB = 2 × AX
AB = 2 × 8
AB = 16
ABCD is isosceles trapezoid
So, Unparallel lines are equal,
AB = CD
⇒ CD = 16 unit.
Hence, 16 unit is length of CD.
Learn more about isosceles trapezoid here:
https://brainly.com/question/2516570
#SPJ2
Help me out with one as well too please
Answers
Answer:
107° is answer
x+73=180(cointerior angle)
x=180-73=107°
When playing the roulette at a casino, you have exactly 1/35 chance of winning in each round if you play a single number. Your friend has rigged up some fireworks to be set off when you win. When you win, he sets off the fireworks every time. When you don't win, he accidentally sets off the fireworks 10% of the time. If you failed to see the outcome of a round, but you see the fireworks going off, then what is the probability that you actually won that round?
Answers
Answer:
0.2275 = 22.75% probability that you actually won that round
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Fireworks going off
Event B: You won
Probability of fireworks going off.
100% of 1/35 = 0.0286(when you win)
10% of 34/35 = 0.9714(you lost). So
[tex]P(A) = 0.0286 + 0.1*0.9714 = 0.12574[/tex]
Probability of you winning and fireworks going off:
100% of 1/35, so [tex]P(A \cap B) = 0.0286[/tex]
If you failed to see the outcome of a round, but you see the fireworks going off, then what is the probability that you actually won that round?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0286}{0.12574} = 0.2275[/tex]
0.2275 = 22.75% probability that you actually won that round
What is the image of (-9,0) after a reflection over the x-axis?
Answers
Answer:
(-9, 0)
Step-by-step explanation:
When a point is reflected over the x-axis, the x-coordinate stays the same but the y-coordinate turns into its opposite. So, the x-coordinate would stay as -9. Because zero is neither negative nor positive, it doesn't have an opposite. So, the y-coordinate would still be 0.
Factor the expression using the GCF. 25b+50
Answers
PLEASE HELP
SOLVE THE EQUATION USING ELIMINATION
3x+8y=-5
-2x+2y=18
Answers
X=-7 and y=2
please help me asap!!
Answers
Answer:
35
Step-by-step explanation:
what I did was add GJ together and imaged it in my head to see if it would fit... I'm not sure tho
Jdmd I eu to the form that
Which of the following values is equal to – (–8.2)? (3 points)
a
−8.2
b
0
c
8
d
8.2
Answers
Answer:
192-11
13×6
11-10
Cevap Bu Kadar Yaani
an 800 deposit for 24 months earned $200 in interest. i need to find out the rate, and total value
Answers
Answer:
rate: 8.33 dollars per month in interest. total value: $1000
Step-by-step explanation:
Answer:
rate is 8.30 and total value is 1000
Step-by-step explanation:
Give the coordinates of the point obtained from each reflection. (a) Reflect the point (-3, 7) across the y-axis: 00 (b) Reflect the point (-3, 7) across the x-axis: (01)
Answers
Answer:
a) Rule for reflection across y - axis:
(x, y) → (-x, y)(-3, 7) → (3, 7)b) Rule for reflection across x - axis:
(x, y) → (x, -y)(-3, 7) → (-3, -7)A rectangular box without a top is have a volume of 12 cubic feet. Find the dimensions of
the box that will have minimum surface area.
Answers
We treat A as a function of the variables and b and equating its partial derivatives with respect to a and b to 0. This gives {-64/(a^2)}+b=0, which means b=64/a^2. Since A(a,b) is symmetric in a and b, partial differentiation with respect to b gives a=64/b^2, ==>a=64[(a^2)/64}^2 =(a^4)/64. From this we get a=0 or a^3=64, which has the only real solution a=4. From the above relations or by symmetry, we get b=0 or b=4. For a=0 or b=0, the value of V is 0 and so are inadmissible. For a=4=b, we get h=32/ab =32/16 = 2.
Therefore the box has length and breadth as 4 ft each and a height of 2 ft.
Find the simple interest earned on a four year CD on a deposit of $2,000.00 with an interest rate of 2.25%. Show all work.
Answers
Answer:
$2.19
Step-by-step explanation:
Answer:
I=2000×2.25%×4
I=180
please help me with this.
Answers
Answer:
Slope=3
Step-by-step explanation:
slope is rise over run, or (y2)-(y1)/(x2)-(x1)
The present age of Andy and Mike are in the ratio 5:3. If Andy had been 7 years older and Mike 7 years younger, the age of Andy would have been 3 times the age of Mike. Find their present age
Answers
Answer: Andy is 35 and Mike is 21.
Step-by-step explanation:
Andy’s present age: Mike’s present age
= 5:3
Andy’s age in “if”: Mike’s age in “if”
=6:2
1 unit = 7
5 unit = 35 (Andy’s age)
3 unit = 21 (Mike’s age)
find the unit rate 39 plates in 3 stacks =plates per stack
Answers
Answer:
13 plates per stalkStep-by-step explanation:
plz follow me
Answer:
13 plates in one stack.
Step-by-step explanation:
If you divide 39 (the plates) amongst the 3 stacks, you get 13.
A research group is interested in gauging perceptions about airline food quality among first class passengers. Specifically, they wish to determine the percentage of business travelers In the United States that believe airline food quality has not improved. They listed the members of the airline's frequent flyer club in alphabetical order and took every tenth member until they succeeded in contacting 170 members. What kind of sampling method have theyused?
a. MULTISTAGE SAMPLING
b. CLUSTER SAMPLING
c. STRATIFIED RANDOM SAMPLING
d. SYSTEMATIC SAMPLING
Answers
Answer:
d. SYSTEMATIC SAMPLING
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
Took every 10th member, that is, every kth member, which is systematic.
The correct answer is given by option d.
In this diagram, two perpendicular lines and two rays intersect at point T. What is the measure, in degrees, of angle QTR?
A. 24
B. 28
C. 32
D. 48
Answers
Answer:
QTR = 24
Step-by-step explanation:
Since lines are perpendicular the total sum is 90 for all three angles
90=42+2x+x
48=2x+x
48=3x
16=x
QTR=2x=2(16)=32
Need to do this Help please
Answers
Answer:
Step-by-step explanation:
Now e have two figures
1 is ABCD and other is APQD ,
Now to find g and f,
Now the are both figure is ,
Area = length * width
Area ABCD = 39 cm^2
AB* BC = 39
(g+7) * ( f) = 39Again,
Area APQD = AP*QD= 16 cm ^2
(g)*(f)=16from here f =16/g putt it in above equation we get ,
(g+7)*16/g = 39
16*g-39*g+96 =0
-23g +96 = 0
g = 96/23
g =3 cm
Now for f putt in one of the above equation ,
f =16/3
f =5.33 cm
Answer:
f = 3cm g = 6cm
Step-by-step explanation: to find f
Subtract the area of APQD from ABCD then divide by 7
f = (39 - 18)/7
f = 21/7
f = 3
To find g, divide the area of APQD by 3
18/3 = 6
We can do this because of the givens: ABCD is a rectangle, PQ is parallel to AD, so BC=AD=PQ
Let U = {c, d, e, f, g, h, i) and A = {c, e, h, i). Use the roster method to write the set A'.
A' =
(Use a comma to separate answers as needed.)
HELP MEEE
Answers
Given:
The universal set is
U = {c, d, e, f, g, h, i}
The other set is
A = {c, e, h, i}
To find:
The set A'
Solution:
We know that,
Complement of a set A = Universal set - set A
A' = U - A
= {c, d, e, f, g, h, i} - {c, e, h, i}
= {d, f, g}
Therefore, the set A' is A' = {d, f, g}.
-x²-2x+7=-17 help lol
Answers
A truck driver drove 13 hours and earned $520. What is the hourly rate?
Answers
Answer:
$40
Step-by-step explanation:
520/13=40
Answer:
Step-by-step explanation:
[tex]\frac{\$ 520}{13hr}=\$40/hr[/tex]