Suppose 7 quarters, 4 dimes, 4 nickels, and 3 pennies are in a box. One coin is selected at random. What is the expected value of the money drawn from the box?
First, let's get the total amount of coins inside the box.
7 quarters + 4 dimes + 4 nickels + 3 pennies = 18 total coins.
(7 quarters / 18 coins) * 100 = 38.89% chance of picking a quarter
(4 dimes / 18 coins) * 100 = 22.22% chance of picking a dime
(4 nickels / 18 coins) * 100 = 22.22% chance of picking a nickel
(3 pennies / 18 coins) * 100 = 16.67% chance of picking a dime
Since the quarters have a higher percentage of being picked, we can expect to draw $0.25 from the box
Sally took 3 tests. Her average on these tests will give her her grade. Find Sally’s grade.
Scores: 65 90 85
Answer:
80
Step-by-step explanation:
Add up all 3 and divide by 3 (how much numbers there are) 65+90+85=240÷3=80
______is 15% of $84,652?
Answer: $12,697.80
Step-by-step explanation:
To find 15% of $84,652, you want to multiply them together.
0.15×84,652=12,697.80
Now, we know that $12,697.80 is 15% of $84,652.
Hey can some please help it's due today thanks!!!
Darnell thinks that -4 is less than -6 because 4 is smaller than 6, and -4 is closer to 0 than -6 is. Explain why Darnell is incorrect.
Answer:
Darnell is incorrect because negative numbers are different than positive numbers. -4 is greater than -6 because it is closer to 0. Which means that it is closer to the positives. :) The biggest negative number is always going to be less than the smaller negative number. :)
Step-by-step explanation:
Answer:
Darnell is incorrect because she is thinking about positive numbers instead of negative numbers.
Step-by-step:
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
please help i can’t do this and it’s due today please help !!
Answer:
go 3 squares to the side and 2 squares up?
What is the value of x, when -25(x - 4) = -55(x - 10)?
Answer:
-25(x - 4) = -55(x - 10)
-25x+100= -55x+550
-25x+55x=550-100
30x=450
x=15
Answer:
x= 15
Step-by-step explanation:
Step 1- Distribute into the parenthesis
-25x-(-25)4= -55x-(-55)10
Step 2- Multiply to simplify
-25x+100= -55x+550
Step 3- Add -55x to both sides
-25x+100= -55x+550
+55x +55x
Step 4- Subtract 100 to both sides
30x+100= 550
-100 -100
Step 5- Divide both sides by 30
30x= 450
30 30
x= 15
What is the domain and range for y=x3 – 4x² + x + 6
Answer:
Domain: set of Real numbers
Range{ set of Real numbers
Step-by-step explanation:
Since this is a cubic function, its domain and range are both the set of Real numbers.
The domain of any polynomial function is the set of Real numbers, And as far as the Range, we decide based on its end-behavior: since this is a polynomial with leading term [tex]x^3[/tex], then it has the property of getting to infinitely large values for increasing values of x, and infinitely negative values for decreasing values of x.
is y=x 4th power
a function
Answer:
Yes.
Step-by-step explanation:
It satisfies our definition of a function. For every x, there is one and only one value of y.
Hope that helped.
HELPPPP PLEASE !!! I do not get this someone help
Answer:
20
Step-by-step explanation
not sure but looks like you need help as fast as possible here my answer the way i thought about is you have 70 degree angle and y looks like a right angle which = 90 degree
x = 180 - 70+90
x = 180 - 160
x = 20
The value of the angle x for the given triangle will be 20°.
What is a triangle?A triangle is a 3-sided shape that is occasionally referred to as a triangle. There are three sides and three angles in every triangle, some of which may be the same.
The sum of all three angles inside a triangle will be 180° and the area of a triangle is given as (1/2) × base × height.
As per the given triangle,
m∠y = 90°
The exterior angle = sum of two interior angles except for the adjacent angle of the exterior angle.
110° = x + y
110° = x + 90°
m∠x = 20°
Hence "The value of the angle x for the given triangle will be 20°".
For more about triangles,
https://brainly.com/question/2773823
#SPJ2
Given: 2q – r = 4p, 2r = q, r = 2p; Prove: q = r
Answer:
q = r
Step-by-step explanation:
Explanation:-
Given 2q – r = 4p ...(i)
2r = q...(ii)
r = 2p ...(iii)
Substitute 2r = q in equation (i)
2(2r) – r = 4p
3 r = 4 p
2 r + r = 4 p
2 r + 2 p = 4 p
2 r = 2 p
q = r
27 mm converted to in m
1.063 inches
0.027 meters
hope it helps!
Does this graph represent a function? Why or why not?
Answer:
D
Step-by-step explanation:
There are no two points on the same line so the answer is D
I hope this is right!
Answer: It's B
Step-by-step explanation:
If your exponent on your power 10 is positive, is your number larger or smaller than 10?
Answer:
See below.
Step-by-step explanation:
The number maybe less than 10, equal to 10, or larger than 10.
Examples:
A.
exponent: 1/2
10^(1/2) = sqrt(10) (less than 10)
B.
exponent: 1
10^1 = 10 (equal to 10)
C.
exponent: 2
10^2 = 10 * 10 = 100 (larger than 10)
The sum of two numbers is 82. One number is three less than four times the other. Find the two numbers.
Answer:
17 , 65
Step-by-step explanation:
x+ y = 82
y = 4x - 3
=====================
Put the second equation into the first.
x + 4x - 3 = 82
5x = 85
x = 85/5
x = 17
17 + y = 82
x = 82 - 17
x = 65
3≤7+g what does g equal?
Answer:
-4
Step-by-step explanation:
Solve this like a normal equation. Pretend the ≤ is an equal sign. Then isolate the variable. Subtract 7 from both sides, and that will give you -4
An angle in a triangle measures 138 °. The other two angles are congruent. Enter and solve an equation to find the x measure of the congruent angles. An equation is = 180.
Angles congruent with each measure.
Answer:
26 degrees
Step-by-step explanation:
180-138=52
52/2=26
Convert to use rational exponents: [tex]\sqrt[3]{2}\sqrt[5]{2}[/tex]
Write each expression in simplest form.
3d + 6d
2 + 55-4
2z+3-92-8
Answer:
9d
53
2z-97
Step-by-step explanation:
Its basically just simplification btw.
pingu!
Can somebody help me out on this question I would really appreciate it so much . Please and thank you .
Step-by-step explanation:
AB = AC, so mark the two sides with single tick marks.
m∠ACD = 128°, so label the angle 128°.
∠ACB is supplementary to ∠ACD, so:
m∠ACB + m∠ACD = 180°
m∠ACB + 128° = 180°
m∠ACB = 52°
ΔABC is an isosceles triangle, so m∠B = m∠ACB.
m∠B = m∠ACB
m∠B = 52°
Angles of a triangle add up to 180°, so:
m∠A + m∠B + m∠ACB = 180°
m∠A + 52° + 52° = 180°
m∠A = 76°
Simplify by combining like terms -10+2(3x-1)+1
Answer: -11+6x
Step-by-step explanation:
Understand PEMDAS method (Operates from left to right)
ParenthesisExponentsMultiplication and DivisionAddition and SubtractionSOLVE:
Given
-10+2(3x-1)+1
Expand parenthesis
-10+6x-2+1
Use PEDMAS method
-10-2+1+6x
-12+1+6x
-11+6x
Hope this helps!! :)
You buy 2 pairs of shoes for $14 each. You give the cashier $29. Which of the following is a good estimation of the change you will get back?
Answer:
Hey there!
A good estimation is one dollar.
2 pairs of shoes for 14 dollars= 28 dollars
29-28=1 dollars.
Hope this helps :)
If UV=5x, VW = 8x - 17, and UW = 11x+11, what is UW
Answer:
UW=165
Step-by-step explanation:
UV + VW =UW
5x + 8x-17= 11x +11
13x - 17 = 11x + 11
Subtract 11x and add 17 to both sides:
2x= 28
Divide 2 both sides:
x=14
Plug in x to the equation of UW:
11 (14) +11
165
I NEED HELP ASAP. I need someone who can help with the rest of the questions
Answer:
(6,0)
Step-by-step explanation:
X-value:
10-8=2
8-2=6
Y-value
4-2=2
2-2=0
2. Graph the inequality.
y<- 3x-2
Answer:
(2,-8) (0,-2)
Step-by-step explanation:
curtis divided 27.16 by 2.8 in Got 0.97 is his answer reasonable why or why not
Given :
Curtis divided 27.16 by 2.8 and got 0.97 .
To Find :
Is his answer reasonable why or why not.
Solution :
When we divide 27.16 by 0.97 we will get 9.7.
So, Curtis did a calculation error of decimal and his answer is not acceptable.
Hence, this is the required solution.
if m+n=0, what is the value of n?
Answer: n= 0 - m
Step-by-step explanation:
To find value of n, isolate it by subtracting m from both sides.
What’s the value of the 8 in 2,983,785
Answer:
ten and ten thousands
Step-by-step explanation:
The first 8 is put in the 2nd place for the right meaning that it is in the tens place, the second 8 is in 5th place from right which means that it is at ten thousands place, Hope this answer helped.
if the image of (x,y)(x-1,y+2) is a (-5,2)what is the pre-image ,or a?
Answer:
the pre-image is ( -4, 0)
Step-by-step explanation:
Simply apply the appropriate transformation to each coordinate by using the information they give you:
x was converted via the transformation x -1 leading to the value -5,
so we write:
x - 1 = -5
and solve for x:
x = -5 + 1 = -4
y was converted via the transformation y + 2 leading to the value 2, so we write:
y + 2 = 2
and solve for y:
y = 2 - 2 = 0
Therefore the pre-image of the point is: ( -4, 0)
Please help alg 2 will give you a brainlist!!
Answer:
y = 4/3
Step-by-step explanation:
the expression can be written as,
(x^8)^1/3 divided by (x^4)^ 1/3
so by using the rules of powers we can deduce y = 4/3
The rules are,
1. (x^y)^z = X^y*z
2. x^y * x^z = x^ y+z
3. x^y / x^z = x^ y-z
Hence,
8/3 -4/3 = 4/3
what is the answer to 0.15 = y - 0.45
Answer:
0.6
Step-by-step explanation: