Answer:
B and D
Step-by-step explanation:
7. A box contains 10 black, 12 white, and 18 red balls. One ball is drawn at
random and replaced. (a) Find the theoretical probability that the ball
drawn is black. (b) Balls are chosen and replaced 40 times. Look at the
table below, find the experimental probability that the ball drawn is black.
(c) Compare the experimental probability of the black ball drawn to its
theoretical probability.
Table:
Color. Times picked
black. 15
white. 12
red. 13
Answer:
1. 10/40 = 1/4
1b. 15/40 = 3/8
1c. 10/40 = 1/4 and 15/40 = 3/8
Step-by-step explanation:
1. So since there are 40 balls (18 + 12 + 10) and 10 of those balls are black the theoretical probability would just be 10 over 40, ([tex]\frac{10}{40}[/tex]).
1b. On the table there are 15 black balls so that would be, [tex]\frac{15}{40}[/tex].
1c. The theoretical probability is 1/4 and the experimental probability is 3/8.
equation 3x + 2y = 2 name solution as ordered pair
Answer:
(0,1) (1,-1/2), (2,-2)
Step-by-step explanation:
Use the completing the square method to transform the equation x^2 + 2x =13 into an equation of the form (x + a)^2 = b where a and b are real numbers. What are the values of a and b?
Answer: part A is 1 and part B is 14
Step-by-step explanation:
Assume y varies jointly with x and z. If y = 12 when x = 2 and z = 4, find x when y = 9 and z =6.
Answer:3
Step-by-step explanation:
A hallow sphere sits snugly inside a foam cube so that the sphere touches all sides. Find the volume of the foam. Round answer to nearest tenth.
Answer:
5832
Step-by-step explanation:
Five less then 3 times a number is 3 let x be unknown
number
Answer:
3x-5=3
Step-by-step explanation:
Answer:
2.6 repeating Or 8/3(same thing in fraction form)
Step-by-step explanation:
So, lets iscolate the different parts of this euqation:
Five less than 3 times a number is 3
Or:
5 less than 3 * x = 3
This is a bit tricky here, but it should be:
(3*x)-5=3
Since order of operations, multipcation comes first.
And remember this is 5 less than the 3*x, so its subtracting 5 from 3*x.
This is all equal to 3.
Now lets solve:
(3*x)-5=3
Solve whats in the parthese first:
3x-5=3
Then get 3x alone:
3x=8
Then get x alone:
x=8/3
Or
2.66 repeating
This is your answer(8/3 or 2.6)
Hope this helps!
20) A water sprinkler uses 12.9 gallons of water per minute. How many gallons of water will it use in 36,5 minutes?
a)470.85
B) 480.85
c)4708.5
D) 4808.5
Answer:
b
Step-by-step explanation:
Answer: D. Hope It helps!!!!!
what is the common difference in the sequence (-3, 2, 7, 12, ...)
Answer:
an=a1+d(n−1) a n = a 1 + d ( n - 1 )
Step-by-step explanation:
This is an arithmetic sequence since there is a common difference between each term. In this case, adding −5 to the previous term in the sequence gives the next term. In other words, an=a1+d(n−1) a n = a 1 + d ( n - 1 ) .
Find the trig ratio. Reduce to
lowest terms.
6
А
8
[?]
sin A
US
Answer:
[tex]\frac{3}{5}[/tex]
Step-by-step explanation:
GIVEN :-
Measure of side opposite to ∠A (Perpendicular) = 6 unitsMeasure of side adjacent to ∠A (Base) = 8 unitsTO FIND :-
sin AFACTS TO KNOW BEFORE SOLVING :-
[tex]Hypotenuse = \sqrt{(Base)^2 + (Perpendicular)^2}[/tex][tex]\sin A = \frac{Side \: opposite \: to \: A}{Hypotenuse}[/tex]PROCEDURE :-
Measure of perpendicular of triangle = 6 units
Measure base of triangle = 8 units
Measure of Hypotenuse = [tex]\sqrt{(6)^2 + (8)^2} = \sqrt{36 + 64} = \sqrt{100} = 10 \: units[/tex]
Side opposite to ∠A = Perpendicular of triangle = 6 units
∴ sin A = [tex]\frac{6}{10} = \frac{3}{5}[/tex]
Help Plis....................
Answer:
1.30
2. 0 im pretty sure
Step-by-step explanation:
if im wong sry
Solve for x and find the
missing angles :)
Answer:
x = 20
I'm not sure about the missing angles
In one game there are 85 spins.
How many of these spins are expected to be 'Go forward 2 squares'?
I dont know the question sory
What is the equation of a circle with center (-2,3) and radius 4? A. (x + 2)2 +- 3)2 = 16 O B. (x + 2)2 + (y - 3)2 = 4 O C. (x-2)2 + (y + 3)2 = 16 D. (x + 2)2 = (y - 3)2 = 16
(x+2)^2 + (y-3)^2 = 4^2
(x+2)^2 + (y-3)^2 = 16
What is the value of p?
O 6
O 7
08
09
Answer:
6
Step-by-step explanation:
opposite angles of a parallelogram are always congruent
36=4p+12
24=4p
p=6
PLEASE HELP ME!!!! I WILL MARK BRAINLIEST
find the length of the third side!
THANK YOU!
Answer:
The answer is 7
Step-by-step explanation:
[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]
for our purposes we must rearrange this problem to find one of the sides, not the hypotenuse
[tex] {a}^{2} = {c}^{2} - {b}^{2} [/tex]
plugging in our numbers we get
[tex] {25}^{2} - {24}^{2} = 49[/tex]
[tex] \sqrt{49} = 7[/tex]
20 POINTS HELP FAST
Administrators surveyed students enrolled in a new school in order to choose the school mascot. There are 480 students enrolled in the school. What is the proportion needed to calculate the average number of students that chose the lion for the mascot?
Mascot Survey
Sample 1
Sample 2
Ducks
12
Ducks
8
Grizzlies
24
Grizzlies
30
Lions
20
Lions
22
Silverbacks
16
Silverbacks
12
StartFraction 21 over 72 EndFraction = StartFraction x over 480 EndFraction
StartFraction 72 over 21 EndFraction = StartFraction x over 480 EndFraction
StartFraction 42 over 72 EndFraction = StartFraction x over 480 EndFraction
StartFraction 20 over 22 EndFraction = StartFraction x over 480 EndFraction
Answer:
its D.
Step-by-step explanation:
Challenge A bag contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the
coins, 8% are pennies and 42% are dimes. There are 5 more nickels than pennies. How much money
does the bag contain?
The bag contains $
a concert has 6 selections. there are 515 seats in each selection. about how many seats are in the concerts hall
Answer:
3090
Step-by-step explanation:
6 x 515
Answer:
3090
Step-by-step explanation:
Round 51354 to the nearest thousand.
Answer:
51000.
Step-by-step explanation:
The thousand digit is 1 and the hundreds digit is 3. As the latter is < 5 we dont round up the 1.
Answer:
51000
Step-by-step explanation:
Calculate the perimeter of the following shape.
6cm
y=
10 cm
12 cm
5 cm
Answer:
The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides.
10 cm + 12 cm + 5 cm + 6 cm
= 33 cm
If the zeros of a parabola are at x = 4 and x = -2 what could be the equation of the parabola?
Answer:
the equation would be: y=(x-4)(x+2)
PLEASE HELP ITS URGENT Select the correct answer.
Which document do you need to have on hand when preparing to file your tax return ?
Answer:
a it's birth certificate
(28.5-5. 190)-2
5-2
23
228
hay here is your answer and hope it's clear :) and if it's not clear [ download photo math] it maybe helpful for you ;)
20 points. Help. No links. Ty :)
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
334
[tex]\huge\boxed{Explanation\hookleftarrow}[/tex]
10 × 4 × 7 = 280
3 × 3 × 6 = 54
280 + 54 = 334
[tex]\huge\boxed{Mark -Brainliest\hookleftarrow}[/tex]
help on this question
Answer:
sec t = 1/(cos t) = 1/(-3/4) = -4/3
What are the solutions to the equation x2 + 4x - 5 = 0?
On a coordinate plane, a parabola goes through (negative 5, 0), (0, negative 5), and (1, 0).
C is the midpoint of AE. B is the midpoint of Ac. D is the midpoint of CE
Answer: d is correct
Step-by-step explanation:
Answer: what is the question
Step-by-step explanation:
can someone please explain to me this image?
Answer:
Complementary
Step-by-step explanation:
I need to know the x and y
Answer:
36^7/12=6 y/x
Step-by-step explanation:
im not sure for the rest of it
Solvex2
- 4x=21
using the zero product property.
Answer:
The answer is (x + 3) (x - 7) = 0
Step-by-step explanation:
x² - 4x = 21
x² - 4x - 21 = 0
x² - 7x + 3x - 21 = 0
x(x - 7) + 3(x - 7) = 0
(x + 3) (x - 7) = 0
Thus, The answer is (x + 3) (x - 7) = 0
-TheUnknownScientist