Mathematics College

At a​ school, 129 students play at least one sport. This is 60​% of the students at the school. How many students are at the​ school?

Answers

Answer 1
(portion of school) = (1.00-portion) x (whole of group)
129 = (1.00-.60) x (whole school)
129 = .4 x (whole school)
129/.4 = Whole school
School size = about 323 students

Related Questions

What is the angular velocity of a 6–foot pendulum that takes 3 seconds to complete an arc of 14.13 feet? Use 3.14 for π.

Answers

The angular velocity is the linear speed divided by the radius.
  ω = d/(t*r) = (14.13 ft)/((3 s)*(6 ft))
  ω = 0.785 radians/second
There are 180/π degrees per radian, so the angular velocity can also be written as ...
  ω = 45 degrees/second

what is the value of x sin x + 11 degrees equals cos 2x + 22 degrees enter your answer in the Box

Answers

In geometry, if the angles have the same values of sine and cosine, it implies that the angles are complementary which further means that the sum of their measures should be 90°. With the given expressions for the angles above,

     (x + 11) + (2x + 22) = 90

Simplifying,

    3x + 33 = 90

Further simplification,
    3x = 90 - 33 = 57

The value of x from the equation is 19.

Answer: x = 19

Answer:

it is 19

Step-by-step explanation:

I just took this test and got 100 :)

Which answer shows a correct order to solve this story problem? Maurine had to pay $2.52 tax on her purchases. She bought 3 books for $12.99 each, 2 pens for $0.69 each, and a magazine for $2.99. How much did Maureen spend? A. Step 1: Add the price of a book and a pen. Step 2: Multiply by 3 and then by 2. Step 3: Add $2.99 to that result. Step 4: Add the tax to the total of the purchases. B. Step 1: Calculate the total price of the 2 pens. Step 2: Add $2.99 to that total. Step 3: Calculate the total price of the 3 books. Step 4: Add the tax to the price of the 3 books C. Step 1: Calculate the total price of the 3 books. Step 2: Calculate the total price of the 2 pens. Step 3: Add $2.99 to the total of the cost of the books and pens. Step 4: Add the tax to the total of the purchases. D. Step 1: Add $2.99 to the amount of the tax. Step 2: Calculate the total price of the 2 pens. Step 3: Calculate the total price of the 3 books. Step 4: Add the prices of the pens to the price of the books.

Answers

The usual choice would be
  C. Step 1: find the price of the books; Step 2: find the price of the pens; Step 3: add the prices of the books, pens, and magazine; Step 4: add the tax.


_____
You can, of course, find and add the constituent prices in any order. Generally, you need to know that subtotal in order to figure the tax, which is then added to that subtotal. If you've ever done any shopping at a store where bills are added manually, or if you pay attention to any cash register receipt, you know this is the process.

hey can you please help me posted picture of question

Answers

Correct answer is option D.

The solution is listed below

[tex]F(x)=4x+7 \\ \\ y=4x+7 \\ \\ y-7=4x \\ \\ \frac{y-7}{4}=x \\ \\ x= \frac{y-7}{4} \\ \\ f-^{1}(y) = \frac{y-7}{4} \\ \\ f-^{1}(x) = \frac{x-7}{4} \\ \\ [/tex]

A theater received $8,917 in ticket sales for one performance of a play. Tickets for preferred seats cost $45 each and regular seats cost $34 each. All of the theaters 75?preffered seats were sold out that evening. How many tickets were sold?

Answers

Let
P = Number of ticket for preferred seats costing $45 per seat
R = Number of regular seats costing $34 per seat.

Total revenue = P*45 + R*34 =8,917

45P + 34R = 8917

But, number of preferred seats is 75 or P=75 seats
Then,
45*75 +34R = 8917
3375 +34R = 8917
34R = 5542
R = 5542/34 = 163

Total number of seats = P+R = 75+163 = 238 seats. If each seat is sold for one ticket, then 238 tickets wee sold.

Brad has 3 pairs of pants, 7 tee shirts, and 2 pairs of sneakers. How many different outfit combinations can he wear

Answers

HE CAN WEAR 42 DIFFERENT COMBOS

Answer:

42

Step-by-step explanation:


Anisha invested $8,000 in an account that earns 10% interest How much money will she have in 15 years of the interest is compound quarterly

Answers

Answer:

A = $35,198.32

Step-by-step explanation:

Use the formula to calculate compound interest:

A = P(1 + i)ⁿ

"A" for total amount after the time period

"P" for principal, or starting money

"i" for the interest rate in a compounding period

To calculate "i":

i = r / c

"n" for the number of compounding periods

To calculate "n":

n = tc

So, we can combine the formulas into:

[tex]A = P(1+\frac{r}{c})^{tc}[/tex]

"c" is the compounding periods in a year. (quarterly = 4)

We know:

P = 8000

r = 10% / 100 = 0.1

t = 15

c = 4

Substitute the information in the formula.

[tex]A = P(1+\frac{r}{c})^{tc}[/tex]

[tex]A = 8000(1+\frac{0.1}{4})^{15*4}[/tex]      Solve "i" and "n"

[tex]A = 8000(1+0.025)^{60}[/tex]        Solve inside the brackets

[tex]A = 8000(1.025)^{60}[/tex]         Do the exponent before multiplying by 8000

A = 35198.318             Exact answer

A ≈ 35198.32              Round to two decimal places for money

Therefore she will have $35,198.32 after 15 years.

Final answer:

Anisha will have approximately $25,266.57 after 15 years of compound interest at a rate of 10% compounded quarterly on her initial investment of $8,000.

Explanation:

Anisha invested $8,000 in an account that earns 10% interest compounded quarterly. To calculate the amount of money she will have in 15 years, we can use the formula for compound interest:

Amount = Principal * (1 + (Rate / Frequency))^(Frequency * Time)

Amount = $8,000 * (1 + (0.10 / 4))^(4 * 15)

Amount = $8,000 * (1 + 0.025)^60

Amount = $8,000 * (1.025)^60

Using a calculator, we find that the amount of money Anisha will have after 15 years is approximately $25,266.57

hey can you please help me posted picture of question

Answers

The correct answer is the Option C, which is:

 C. G(x)=(x-2)^3

 The explanation is shown below:

 1. You have the the red graph has the equation F(x)=x^3
 2. If you shifted two units to the right, you must add -2 to the function x^3, as below:

 G(x)=(x-2)^3

 3. If you want to verify this is correct, you need to give values to the variable x and plot each point.
 4. You will see that the correct answer is the option mentioned above.

A lunch in a fancy restaurant is three times as expensive as a lunch in a cafeeria. The lunch in the fancy restaurant costs 36. In five day workweek Mary eats at the fancy restaurant once and in the cafeteria the rest of the days. How much does she spend on lunches in that week

Answers

In this item, we first solve for the cost of eating in a cafeteria. From the given it is stated that the cost of eating in a fancy restaurant is 3 times the cost of eating in cafeteria. Mathematically,

    3x = 36

where x is the cost of eating in cafeteria. 

The value of x from the equation is 12.

In a five-day workweek, she eats at the fancy restaurant once and four times in cafeteria. To determine the total cost,

    T = 4(12) + 36
    
     T = 84

Thus, the answer to this item is 84.
let: 

f = fancy restaurant price
c = cafeteria price

f = 3c

f = 36
c = 36/3 = 12

36 + 12*4 = 84

she spends 84 on lunches for a fiveday workweek

Consider f and c below. f(x, y) = (3 + 4xy2)i + 4x2yj, c is the arc of the hyperbola y = 1/x from (1, 1) to 3, 1 3 (a) find a function f such that f = ∇f. f(x, y) = (b) use part (a) to evaluate c f · dr along the given curve
c.

Answers

We want to find a scalar function [tex]f(x,y)[/tex] such that [tex]\nabla f(x,y)=\mathbf f(x,y)=\dfrac{\partial f}{\partial x}\,\mathbf i+\dfrac{\partial f}{\partial y}\,\mathbf j[/tex].
So we need to have
[tex]\dfrac{\partial f}{\partial x}=3+4xy^2[/tex]
Integrating both sides with respect to [tex]x[/tex] gives
[tex]f(x,y)=3x+2x^2y^2+g(y)[/tex]
Differentiating with respect to [tex]y[/tex] gives
[tex]\dfrac{\partial f}{\partial y}=4x^2y+\dfrac{\mathrm dg}{\mathrm dy}=4x^2y[/tex][tex]\implies\dfrac{\mathrm dg}{\mathrm dy}=0[/tex][tex]\implies g(y)=C[/tex]
So we find that
[tex]f(x,y)=3x+2x^2y^2+C[/tex]
By the fundamental theorem of calculus, we then know the line integral depends only on the values of [tex]f(x,y)[/tex] at the endpoints of the path. Therefore

[tex]\displaystyle\int_{\mathcal C}\mathbf f\cdot\mathrm d\mathbf r=f\left(3,\frac13\right)-f(1,1)=11-5=6[/tex]
Final answer:

Find the function f whose gradient is equal to the vector function f, then evaluate the line integral of f along the given hyperbolic arc from (1,1) to (3,1/3). This involves calculus and the concept of vector fields.

Explanation:

This problem involves calculus, specifically the concept of vector fields and line integrals. First, we are asked to find a function f(x, y) such that its gradient is equal to a given vector function f(x, y). To find this scalar function, we need to perform the integral of each component of the vector function f in terms of x and y.

Then we need to evaluate the line integral of the vector function f along a curve c, which is given as an arc of the hyperbola y = 1/x. The definite integral from point (1,1) to point (3,1/3) should be calculated. This integral represents the work done by the field f along the curve c.

Keep in mind that when you perform a line integral, you are adding up the contributions of a field (in this case, the vector field f) along a path (here, the hyperbola). Therefore, the path must be parameterized, and the limits of integration should be the parameter values that correspond to the points (1, 1) and (3, 1/3).

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Cards are dealt, one at a time, from a standard 52-card deck. a if the first 2 cards are both spades, what is the probability that the next 3 cards are also spades?

Answers

So we already drew two cards and both of them are spades. So that means there are 50 cards and 11 spades left.

Then third card being spades would be 11 / 50

Now there are 10 spades and 49 cards left.
So the probability for fourth card would be 10 / 49

Fifth card would be 9 / 48.

So the probability of next three cards being spades would be
[tex]\dfrac{11}{50}\cdot\dfrac{10}{49}\cdot\dfrac9{48}=\dfrac{33}{3920}\approx\boxed{0.00842}[/tex]

Hope this helps.

find the midpoint of the line segment with the given endpoint (7,4) (9,-1)

Answers

Midpoint = [tex]( \frac{X2-X1}{2} , \frac{Y2-Y1}{2} )[/tex]

So plug into that. 

You get (9 - 7)/2 , (- 1 - 4)/2

Which gives you 2/2 , - 5/2

This simplifies to the ordered pair (2, - 5/2)

Answer:

(8, 1.5)

Step-by-step explanation:

A line passes through the ordered pairs (4,1) and (2,8). What is the slope? Please help due today

Answers

[tex]\bf \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~ 4 &,& 1~) % (c,d) &&(~ 2 &,& 8~) \end{array} \\\\\\ % slope = m slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{8-1}{2-4}\implies \cfrac{7}{-2}\implies -\cfrac{7}{2}[/tex]

What is the distance d across the lake?

Answers

Answer-

The distance d across the lake is 90ft.

Solution-

In the picture,

ΔABC ≈ ΔCDE

Because,

∠ACB = ∠DCE (∵ vertical opposite angles)∠B = ∠D = 90°∠ACB = ∠CED (∵ as other two angles are same and sum of those two angles when subtracted from 180° will result the same)

So, from similarity properties

[tex]\Rightarrow \dfrac{AB}{DE}=\dfrac{BC}{DC}[/tex]

[tex]\Rightarrow \dfrac{120}{20}=\dfrac{d}{15}[/tex]

[tex]\Rightarrow d=\dfrac{120\times 15}{20}=90[/tex]

find 1/9 as many as 3 divided by 5

Answers

Final answer:

To find 1/9 as many as 3/5, you multiply 3/5 by 1/9 to get 3/45, which simplifies to 1/15.

Explanation:

To solve the student's question, we need to find what is 1/9 as many as 3/5. This involves multiplying the fraction 3/5 by the fraction 1/9. Here is the step-by-step calculation:

Multiply the numerator of the first fraction (3) by the numerator of the second fraction (1) to get the numerator of the answer.Multiply the denominator of the first fraction (5) by the denominator of the second fraction (9) to get the denominator of the answer.Combine these to get the answer in fractional form.

The calculation will look like this: (3/5) × (1/9) = 3/45 = 1/15.

Thus, 1/9 as many as 3/5 is 1/15.

David is making a mosaic using 63 glass tiles 105 ceramic tiles and 84 marble tiles he wants to put the same number of each type of tile and Rose what is the maximum number of times you can have in each row

Answers

The largest number that divides 63, 84, and 105 evenly is 21.

David can put 21 of each kind of tile in a row.

_____
These numbers are 3*21, 4*21, and 5*21, respectively.

On February 1, the electricity meter reading for the Smith residence was 19,423 kilowatt hours. On March 1, the meter read 20,288 kilowatt hours. On April 1, the meter read 21,163 kilowatt hours. a. How many kilowatt hours of electricity did the Smiths use during February? b. How many kilowatt hours did they use during March?

Answers

a. How many kilowatt hours of electricity did the Smiths use during February?

Kilowatt hours of electricity the Smiths used during February:
Meter read on March 1 - meter read on February 1 =
20,288 kilowatt hours - 19,423 kilowatt hours =
865 kilowatt hours
Answer: The Smiths used 865 kilowatt hours of electricity during February

b. How many kilowatt hours did they use during March?

Kilowatt hours of electricity the Smiths used during March:
Meter read on April 1 - meter read on March 1 =
21,163 kilowatt hours - 20,288 kilowatt hours =
875 kilowatt hours
Answer: The Smiths used 875 kilowatt hours of electricity during March

Question# 12, find the slope

Answers

From the graph we can see that the line is passing through following two points:

(0,1) and (-4, -2)

Slope = m = (-2 - 1)/(-4 -0 ) = -3/-4 = 3/4

So the slope of given line is 3/4

Thus the correct answer is option B
The slope is given by:
 m = (y2-y1) / (x2-x1)
 We choose the ordered pairs:
 (x1, y1) = (0, 1)
 (x2, y2) = (4, 4)
 Substituting values we have:
 m = (4-1) / (4-0)
 m = (3) / (4)
 m = 3/4
 Answer:
 The slope for this case is given by:
 m = 3/4
 option 2

Fill in the missing statements and reasons in the proof.
Given: PQRS is a parallelogram.
Prove: PR and QS bisect each other at T.

Answers

Answer:

We have to complete the proof.

PQRS is a parallelogram          1. Given

2. [tex]\overline{PQ}\:is\:parallel\:to\:\overline{RS}[/tex]    Definition of a parallelogram

m∠1 ≅ m∠3                  4. Alternate interior angles are equal or

m∠2 ≅ m∠4                       congruent.

[tex]\overline{PQ}\:\cong\:\overline{RS}[/tex]      Opposite sides of a parallelogram are congruent

ΔPQT ≅ ΔRST     5. Triangle are congruent by Angle-Side-

                                 Angle congruent rule

[tex]\overline{PT}\:\cong\:\overline{RT}[/tex]   6. Corresponding parts of Congruent triangles

[tex]\overline{QT}\:\cong\:\overline{ST}[/tex]

7. PR and QS bisect each other at T          Definition of a bisector

To prove that PR and QS bisect each other at T in a parallelogram PQRS, we can show that PR and QS intersect at T and divide each other into equal segments.

To prove that PR and QS bisect each other at T, we can use the fact that PQRS is a parallelogram.

We can start by showing that PR and QS intersect at a point, say T. Since PQRS is a parallelogram, its opposite sides are congruent. Therefore, PR is congruent to QS.

Next, we can show that PR and QS divide each other into equal segments. We can do this by proving that triangle PTR is congruent to triangle STQ using the side-angle-side (SAS) congruence criteria.

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Ezra is training for a track race. He starts by sprinting 100 yards. He gradually increases his distance, adding 5 yards a day for 21 days.

Answers

On the 21st day, he sprints 205 yards.

Is that what you meant for the problem

or do u want to know how many yards he sprinted total for the 21 days
If it is,
he sprinted a total of 3390 yards

On Apex the correct one is 200 yards.

In which type of investment do you lend your money to a government agency or a corporation for a fixed period of time and earn interest?
a) bonds
b) stocks
c) mutual funds

Answers

Answer: a. Bonds

Step-by-step explanation:

Bond is a kind of money investment issued by private corporations or government banks.

Buying a bond is like issuing a loan to the issuer. The issuer will pay back the face value of the issued loan along with interest money. It is issued for a fixed period of time.

Answer:

a) bonds

Step-by-step explanation:

was right

Find the length of JK and the measure of M

Answers

Comment
You have two different situations, but both of them are solved the same way.

Step One
Solve for the 2 equal sides.
21x - 9 = 3x + 27   Add 9 to both sides.
21x = 3x + 27 + 9
21x = 3x + 36       Subtract 3x from both sides.
21x - 3x = 36
18x = 36               Divide by 18
x = 36/18
x = 2

That's not quite the answer

Step Two
Find JK
JK = 21x - 9
JK = 21*2 - 9
JK = 42 - 9
JK = 33  <<<<<<< Answer

Step Three 
Solve for y
5y + 11 = 12y - 10 Subtract 5y from both sides.
11 = 12y - 5y  - 10
11 = 7y - 10          Add 10 to both sides.
11 + 10 = 7y     
21 = 7y                 Divide by 7
21/7 = y
3 = y

Step Four
Solve for M
M = 12y - 10
M = 12*3 - 10
M = 36 - 10
M = 26  <<<<< Answer
JK = 33
M = 74

Hope this Helped!

;D
Brainliest??

If the numerator of a fraction is increased by 3, the fraction becomes 3/4. If the denominator is decreased by 7, the fraction becomes 1. Determine the original fraction. Which of the following equations represents "If the numerator of a fraction is increased by 3, the fraction becomes 3/4"?

Answers

For this case, the original fraction is:
 x / y
 Where,
 x = numerator
 y = denominator:
 If the numerator of a fraction is increased by 3, the fraction becomes 3/4:
 (x + 3) / y = 3/4
 If the denominator is decreased by 7, the fraction becomes 1:
 x / (y-7) = 1
 Solving the system of equations we have:
 x = 9
 y = 16
 The original fraction is:
 9/16
 Answer:
 the original fraction is:
 9/16
 "If the numerator of a fraction is increased by 3, the fraction becomes 3/4" is:
 (x + 3) / y = 3/4

a number cube is labeled 1 to 6 Find each probability write each answer as a fraction , a decimal, and percent P(2)

Answers

P(1) = 1/6 = 0.166666 = 16.7%
P(2) = 1/6 = 0.166666 = 16.7%
P(3) = 1/6 = 0.166666 = 16.7%
P(4) = 1/6 = 0.166666 = 16.7%
P(5) = the same as the 4 above.
P(6) = the same thing  as those numbered P(1) to P(4)

You might wonder how I got the %

any decimal expressed as a percent means multiply the decimal by 100.

0.1666666 * 100 = 16.66666 % which I rounded to 16.7% 

Please help!!! I very much need help, thank you!

Answers

The Pythagorean theorem tells you the square of the hypotenuse is equal to the sum of the squares of the sides.
  BC² = AB² + AC²
  BC² = 4² +4² = 32
  BC = √32 = 4√2
  BC = 4*1.41 = 5.64

The length of segment BC is 5.64 m.

Hey can you please help me posted picture of question

Answers

Vertically compressed means multiplying the function by a number between -1 and 1

From the given options only option C contains such an expression in which x² is multiplied with a number between -1 and 1.

Thus,

G(x) = 3/4 x²

So, the correct answer is option C

Quadrilateral has angles 45 degrees, 150 degrees, 65 degrees, and N degrees

Answers

n=100
other angles=260
all interior angles of a quadrilateral add up to 360

What is the ratio (fraction) of minivans to all vehicles on the forecourt?
A)1/120
B)1/20
C)1/6
D)1/4

Answers

there is a total of 120 and 20 minivans so
20/120
1/6
I hope this helps

do u do keystone

? im just wondering i do

From a group of 3 men and 4 women, a delegation of 2 is selected. let x be the random variable that represents the number of women selected. write the probability distribution and find the expected number of women in the delegation?

Answers

Let random variable x be the delegated number of men.
x values are 0, 1, 2, 3
The corresponding probabilities are:
P(x=0)=  3C2/7C2=3/21
P(X=1)=3C1*4C1/7C2=12/21
P(X=2)=3C2/7C2=3/21
P(X=3)=3C2/7C2=3/21

Hence the expected value will be:
E(x)=[0*3+1*12+2*3+3*3]/21
E(x)=27/21=1.29

Two graphs are shown below:

graph A shows scatter points 1, 1 and 2, 2 and 3, 3 and 4, 4 and 5, 5graph A shows scatter points 1, 4 and 2, 4 and 3, 4 and 4, 4 and 5, 4

Which scatter plot shows a positive correlation between x and y?

Only graph A
Only graph B
Both graph A and graph B
Neither graph A nor graph B

Answers

The answer would be graph A because positive correlation is when the X and Y axis advance together. 

The correct answer is graph A

Other Questions
My mother finally went to work as a cook and left me and my brother alone in the flat each day with a loaf of bread and a pot of tea. When she returned at evening she would be tired and sometimes dispirited and would cry a lot. Sometimes, when she was in despair, she would call us to her and talk to us for hours, telling us that we now had no father, that our lives would be different from those of other children, that we must learn as soon as possible to take care of ourselves, to dress ourselves, to prepare our own food; that we must take upon ourselves the responsibility of the flat while she worked. Why does Wright include this text? ( Please help me, the year is ending and I'm almost at a failing grade): ) An athlete is running along a circular path that has a diameter of 250 yards. The arc traveled by the athlete is 120 degrees. Using 3.14 for (symbol that looks like two Ts that are connected), how many yards did the athlete run? Round the answer to the nearest yard. Is it possible for an object moving with a constant speed to accelerate? explain? Which is relatively better: a score of 83 on a psychology test or a score of 55 on an economics test? scores on the psychology test have a mean of 92 and a standard deviation of 13. scores on the economics test have a mean of 56 and a standard deviation of 3? How are ingenious rocks formed Which of the following strategies would most likely improve water conservation at a plant that manufactures computer chips? (2 points) Decrease the size of each chip Increase the number of chips manufactured in a day Move the plant to a location that is closer to a body of fresh water Replace toxic chemicals used to make the chips with nontoxic chemicals When a country brings in goods that were made in another country, what is it doing? Can somebody paraphrase this for me?Ten years from now, I see myself as a strong, independent, healthy, and most important of all, happy woman, and I am aware that the only person that can get me there is myself by putting all the passion, effort and determination I have in everything I do. HELP ASAP (dont answer if your not sure)Which of these types of art thrived during the golden age of Chandra Gupta?A: Sculptures, Dance, PaintingsB: Agriculture, Music, SculptureC: Metalworking, painting, art OrD:Math, Medicine, public Works Read the passage.(1) William Shakespeare was born in 1564 in Stratford-upon-Avon. (2) It is a town in England. (3) He is believed to have attended the Kings New School there from age seven to age fourteen. (4) Teachers were strict in Shakespeares day. (5) The school day was long. (6) In the summer, school started at 6 a.m. (7) School did not end until 5 p.m. (8) In the winter, the school day was an hour or two shorter. (9) At age nine, students began learning Latin. (10) It was the language of international affairs. (11) In school, students spoke Latin. (12) Teachers also spoke Latin. (13) Students caught speaking English in school were punished.Which is the most effective way to combine sentences (6) and (7)?a.Not ending until 5 p.m., school in the summer started at 6 a.m.b.The summer school day, ending at 5 p.m., started at 6 a.m.c.Starting at 6 a.m. and not ending until 5 p.m. was school in the summer.d.In the summer, school started at 6 a.m. and did not end until 5 p.m. Mri studies of persons using inhalants have revealed that the drug causes changes in brain structure that include What sequence on a dna molecule indicates where rna polymerase should begin transcription? Thomas had three different types of coins in his pocket, and their total value was $2.72. He had twice as many pennies as quarters and one less dime than the number of pennies. How many quarters did he have? This nation is the second-largest producer of opium in the world. -Cambodia -Laos -Myanmar -Brunei What type of severe weather would most likely decrease coral reef biodiversity by damaging coral skeletons and polyps? are these answers correct How did Chiang Kai-sheks fear of communism cause him to alienate many Chinese intellectuals and political moderates? Olgas family traveled 942 kilometers on the first day of their trip and 894.5 kilometers on the second day.How many more meters did Olgas family travel on the first day?I'm in K12 and if you are too and have the answer, plz help Seventy percent of the bicycles sold by a certain store are mountain bikes. among 100 randomly selected bike purchases, find the probabilities below. (round your answers to four decimal places.) (a) what is the approximate probability that at most 75 are mountain bikes? Find the range of the following data. 5.3, 6.2, 3.1, 4.8, 7.3