please help (probability question)!

Answer: x = 2

Step-by-step explanation:

[tex]10x - 15x + 5= -45 + 40[/tex]

subtract 5

[tex]10x - 15x= -45 + 40-5[/tex]

Combine like terms;

[tex]-5x=-10[/tex]

Divide by -5

[tex]x=\frac{-10}{-5}\\ x=2[/tex]

Answer:

[tex]x = 2[/tex]

Step-by-step explanation:

[tex]10x - 15x + 5 = - 45 + 40 \\ 10x - 15x = - 5 - 45 + 40 \\ - 5x = - 10 \\ \frac{ - 5x}{ - 5} = \frac{ - 10}{ - 5} \\ x = 2[/tex]

Answer:

$39,000

Step-by-step explanation:

i = prt

i = ($30,000)(.10)(3)

$9000 + 30000

Answer:

$39000

Step-by-step explanation:

Using the given formula :

I = P × R × T

I = 30000 × 10/100 × 3

I = $9000

She have = 9000 + 30000 = $39000

Answer:

(5-6)/(1+1)= -1/2

y - 6 = -1/2(x + 1)

y - 6 = (-1/2)x - 1/2

y - 12/2 = -1/2x - 1/2

y = -1/2x + 11/2

Answer:

3x+2

Step-by-step explanation:

i had a test with the same question, i promise its right :)

Answer:

i believe it is (B) but i don't know for sure it might be rong

Step-by-step explanation:

Answer:

Time when Ben and Melanie are 360 miles apart = 3.871 hours.

Step-by-step explanation:

The question seems unclear, but the sense that could be made from this question is that

Ben leaves with a speed of 51 miles per hour and Melanie also left at the same time in the opposite direction at a speed of 42 miles per hour. My husband wants to find how many hours they both must have been moving to be 360 miles apart.

Let the required time be t.

Let the distance covered by Ben in t hours be x miles.

Let the distance covered by Melanie in t hours be y miles.

Total distance covered = x + y = 360 (eqn 1)

speed = (distance/time)

For Ben

51 = (x/t)

x = (51t) miles

For Melanie

42 = (y/t)

y = (42t) miles

Substituting for x and y in eqn 1

x + y = 360

51t + 42t = 360

93t = 360

t = (360/93) = 3.871 hours.

Ben would have travelled x = 51t = 51 × 3.871 = 197.42 miles

Melanie would have travelled y = 42t = 42 × 3.871 = 162.58 miles

Hope this Helps!!!!

4. 54, -18, 6, -2

First term a₁=54

common ratio  r=-18/54 = 6/-18 = -2/6 = -1/3

Recursive form:

a[1]=54

a[n] = (-1/3) a[n-1]   for n>1

Explicit formula:

[tex]a_n = 54 (-\frac 1 3)^{n - 1} [/tex]

Answer:

r: radius of balloon

V = (4/3)*pi*r^3 =  288000

=> r^3 = 288000*(3/4)/pi

=> r^3 = 68754.94

=> r = [tex]\sqrt[3]{68754.94}[/tex] = ~40.97 cm

Answer:

1/3 or 3/9

Step-by-step explanation:

The dart board can be split into 9 1x1 squares. 3 of those squares are in the 10 point zone. So, there is a 3 out of 9 (or 1 out of 3) chance to get 10 points.

Answer:

x = 80

Step-by-step explanation:

[tex]\sqrt{5x}=20\\[/tex]

Take square,

[tex](\sqrt{5x})^{2}=20^{2}\\\\5x=20*20\\\\x=\frac{20*20}{5}\\[/tex]

x = 4*20

x   = 80

Answer:

25 cars

Step-by-step explanation:

The number of cars were going between 40 and 48 miles per hour is 25. Therefore, option C is the correct answer.

A box and whisker plot—also called a box plot—displays the five-number summary of a set of data. The five-number summary is the minimum, first quartile, median, third quartile, and maximum. In a box plot, we draw a box from the first quartile to the third quartile. A vertical line goes through the box at the median.

From the given box plot, we have

Minimum value = 37

Maximum value = 69

First quartile = 40

Third quartile = 55

Mean = 47

The distance between Q1 and the median is 25%.

The number of cars between 40 and 48 miles per hour is therefore 25% of the total.

= 100 × 25%

= 25 cars

Therefore, option C is the correct answer.

Learn more about the box plot here:

https://brainly.com/question/1523909.

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Answer:

x=-1, -1/2, 3

Step-by-step explanation:

Lee sold 40 magazines

Step-by-step explanation:

Equation Model:

Let m be the number of magazines Lee sold.

150%-130%=20%, so if 0.2m=8 then m=40

Let me show another way: In the image above 20% is equal to 8 so if we use 8 and 20% and try to reach our way up to 100% (How much Lee sold in total) then we will get our answer.

20%=8

40%=16

60%=24

80%=32

100%=40

Therefore Lee sold 40 magazines.

Hope that makes sense! If you have any more questions or need further clarification then please comment down below or message me! Good luck!

Answer:

C 225

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

A. Add 1/6 to both sides.

Step-by-step explanation:

Hope it helps

Answer:

As the triangle is right angled ,

sinR = 17/63

Angle R = 15.7⁰

The closest value of the measure of ∠R is,

⇒ ∠R = 15.7°

An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.

Given that;

Right triangle RST is shown below with the dimensions given in feet.

Now, By trigonometric formula;

tan x = Opposite / Adjacent

Here, Opposite side of angle R = 17 ft

And, Adjacent side = 63 ft

Hence, We get;

tan x = Opposite / Adjacent

tan R = 17 / 63

tan R = 1/9

R = 15.7°

Thus, The closest value of the measure of ∠R is,

⇒ ∠R = 15.7°

Learn more about the angle visit:;

https://brainly.com/question/25716982

#SPJ5

Answer:

wm hv

Step-by-step explanation:

everything

Answer:

28*3.14in

Step-by-step explanation:

Let's consider the formula of these shape first.

For the cylinder

Volume = πr²h

While for the cone

Volume = 1/3πr²h

Just mere looking at the formula we know that if the volume of the cylinder is given, that of the cone will be 1/3 of it.

From the question .

The two have same base and height, indicating equal radius also.

If the volume of the cylinder is 84*3.14in then that of the cone will he 1/3 of 84*3.14in = 28*3.14in

Answer:

1294000

Step-by-step explanation:

There are two ways to do this: The short way and the long way:

Answer:

5 .52

Step-by-step explanation:

do the math. aaaaaaaaaaaaaaaaaaaannnnnnnnnnnnnnnnnddddddd this is the best appppp evvvvver

Answer:

Angle 2

Step-by-step explanation:

Remember the X, whatever is opposite to the given angle.

Answer:

angle 2 is the answer my dude

Step-by-step explanation:

Answer:

a(n) = 3 + 2(n + 1)

Step-by-step explanation:

Hi, jacob,

Each new term here is obtained from the previous one by adding 2.  Thus the "common difference" is 2 and the explicit formula for a(n) is

a(n) = 3 + 2(n + 1)

Answer:

904.78 in^3

Step-by-step explanation:

We know basketball is a sphere,So

Volume of a spherical basketball = 4/3πr^3

Given radius = 6 inches

= 4/3πr^3

= 4/3×3.14×6^3

= 904.78 inches^3

hope it helps!

Answer:

453 in 3

Step-by-step explanation:

Answer: $1200

Step-by-step explanation:

SO we know that their income is 5000 and 25% of it i for food.

so we will multiply 25% * 5000 =1250  so we know that  out of the 5000, $1250 - $50=$1200

This means that 1% of the was reduce.So now the food budget will be 24% out of the total budget.

Answer:

10. 85°

11. 70°

12. 50°

Step-by-step explanation:

Please see attached picture for full solution.

Answer:

I'm Pretty sure B, I am not that good at math but i hope i got it correct!

Step-by-step explanation:

Answer:

The answer is B, my darling.

Answer:

Step-by-step explanation:

471/3 * 2 = 314

Answer:

Candidate B has 165 votes

Step-by-step explanation:

Answer:

x^2+1

Step-by-step explanation:

x^3+x^2+x+1 / x+1

=(x+1)(x^2+1) / x+1

reduce (x+1) and x+1 and you will get x^2+1

Answer:

y = x(0.75)^t

the cost to rent a dvd 5 years ago is $8.43

Step-by-step explanation:

Let x represent the cost to rent a dvd 5 years ago;

And y the cost to rent a dvd t years after.

The cost to rent a dvd has decreased 25% per year, this can be written as an exponential function;

y = x(100% -25%)^t

y = x(1-0.25)^t

y = x(0.75)^t .....1

if the current cost is $2;

t = 5 years

y = $2

Substituting the values into equation 1;

2 = x(0.75)^5

2 = x(0.2373046875)

x = 2/(0.2373046875)

x = 8.427983539094

x = $8.43

Answer:

140 km

Step-by-step explanation:

The square has all 4 sides with the same length, 35 km. Therefore the total perimeter is just 4*35, which is 140 km.

Answer:

140

Step-by-step explanation:

35+35+35+35=140