Answer: 45
=====================================================
Work Shown:
n = number of rolls = 150
p = probability of rolling a "1" = 0.3
n*p = expected number of "1"s that show up out of the 150 rolls
n*p = 150*0.3
n*p = 45
We expect about 45 ones will show up.
describe and correct the error in solving the proportion?
Answer: Choice B
They did not perform the cross multiplication properly
The correct step should be m*24 = 8*15 which solves to m = 5
========================================================
Explanation:
In general, if we had the equation A/B = C/D, then it cross multiplies to A*D = B*C. We refer to this as cross multiplication because of the shape made when we connect the terms (to figure out what multiplies with what). The diagram below shows what I mean.
So that's why m/8 = 15/24 cross multiplies to m*24 = 8*15
Simplifying things a bit leads to 24m = 120. Then we divide both sides by 24 to fully isolate m and we get m = 120/24 = 5. Therefore, m = 5.
the options are:
greater than..
less than..
less than or equal to..
greater than or equal to.. plz help
Answer:
P is greater than -8
P is less than -5
When the circle is hollow that means its never equal to
When the circle is full it means its equal to
it matters which direction the line is going
if it goes to the right and it is hollow that it is greater than
if goes to the left and it is hollow it is less than the number the circle is on
If the circle is full when it goes to the right then that means its greater than or equal to from the number its going from
same thing to the left
a ladder is leaning against a building. the top of the ladder is 21 feet up the wall. the bottom of the ladder is 20 feet away from the base of the building. how long is the ladder
Answer:
29
Step-by-step explanation:
We can use the pythagorean theorem to find the length of the ladder
[tex] {20}^{2} + {21}^{2} = c {}^{2} [/tex]
[tex]400 + 441 = {c}^{2} [/tex]
[tex]841 = {c}^{2} [/tex]
[tex]c = 29[/tex]
The answer is 29
Answer:
19 ft .
Step-by-step explanation:
Given :-
Height = 21 ft .Base = 20ft.Using Pythagoras Theorem :-
p² + b² = h² 20² + 21² = h²400 + 441 = h²h² = 841h = √841 h = ± 19 ft h = 19 ft .find the value of the variables. x and y
Answer:
x = 29.4
y = 17
Step-by-step explanation:
sin 90° / 34 = sin 60° / x
x = 34·sin 60°
x = 29.4
sin 90° / 34 = sin 30° / y
y = 34·sin 30°
y = 17
can someone plz help me
Answer:
x is less than or equal to negative 14.
Step-by-step explanation:
so for now we should pretend that the greater than or equal to is an equal sign, and simplify the problem to get x alone on a side
remove 5 from each side
-x/3=1/3-5
-x/3=14/3
multiply both sides by 3
-x=14
x=-14
so we can now replace the equal sign with the equal or greater to, so x is less than or equal to -14
please help with this, I don't really understand it and I need to turn in my homework by tonight! thanks in advance
Answer:
Explained below
Step-by-step explanation:
Hi! Do you know the similar triangle rules?
I will prove one for you and you can try the rest
ΔCBD ~ ΔABC proof:
st | r
1) ΔABC is right Δ | Given
2) CD is alt to hyp | Given
3) m∠C = 90° | def right Δ
4) m∠CDB = 90° | def alt
5) m∠B = m∠B | reflexive property (more triangles share ∠B)
6) ΔCBD ~ ΔABC | AA (since two angles are equal, the two triangles are similar)
We do not need to prove all three angles as similar since if two corresponding angles of two triangles are congruent, the third has to be equal (since the total sum of angles is 180° in a triangle)
You can translate the statement reasoning into a paragraph
I hope this helps! If not, let me know and I will try and explain further :)
In a survey of U.S. Adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. Adults and asked them whether they have had someone take over their email accounts without their permission. Find the probability that the number of U.S. Adults who say they have had someone take over their email accounts without their permission is : a. At most 40 b. Less than 45 c. Exactly 48
Answer:
a. At most 40
Step-by-step explanation:
If we take the survey that was done as a basis then we would use the 16% that was obtained as the number of overall US adults that have had their accounts used without their permission. Assuming that the 250 selected individuals were selected at random and without bias then those 250 would also be representative of the entire population. Therefore, we would simply need to multiply the number of selected individuals by the percentage in decimal form.
16 / 100 = 0.16
250 * 0.16 = 40
Finally, we can see that roughly 40 individuals would have had their email used without permission.
x/6 +2=-16 solve for x
Step-by-step explanation:-108 is answer
x/6 +2=-16
x/6=-16-2
x=-18×6=-108
Answer:
x= -128
Step-by-step explanation:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
If a 4 year old accidentally ingested forty-two 5gr acetaminophen tablets,
how many milligrams did the child ingest?
Answer:
210,000mg of acetaminophen
Step-by-step explanation:
42 × 5= 210
210 grams
1 g= 1000mg
210g=210,000mg
Hope this helps! :)
VJ 15 TL
ППОпрот)
. Which of the following is a zero of the polynomial f(x)= x5+2x4+x+2?
A. I
B.-1
C.-2
D. 2
Answer:
x = -2 is a function
Step-by-step explanation:
To get which is a zero, we have to look at one value of x which when substituted into the polynomial will give -1
we have this as:
Let us try the value x = -2
-2^5 + 2(-2)^4 - 2 + 2
= -32 + 32 - 2 + 2 = 0
This means that the term x = -2 is a root of the equation
A cell phone company offers two plans for unlimited calling. The first plan has a monthly charge of $25 and 8.08 per text message. The second plan has a monthly charge of
$20 and $.12 per text message. For how many tect messages would the two plans have an equal cost? (What is the solution to this system? X represents the #of text
messages and represents the total costs)
• 66
• 175
• 125
• they will never cross
he following section is a statement from the rental agreement Tim signed when he rented his car this past weekend.
"Upon checkout, the fuel level of the vehicle will be determined by turning the vehicle on and visually inspecting the fuel gauge. The approximate fuel level will be recorded on the Check-Out sheet and verified with initials by the vehicle Renter. One copy of the Check-Out sheet will be given to the customer. Another copy will be kept with the on-site records of the vehicle.
"The rented vehicle must be returned with a minimum fuel level the same as that indicated on the Check-Out sheet. A vehicle returned with a fuel level less than the approximate level indicated on the Check-Out sheet will be completely refueled with on-site pumps. The price of the fuel used to refuel the vehicle will be added to the Renter's total charge at a cost of $4.50 per gallon plus a $5.00 refueling charge."
Tim is running extremely late and has just 5 minutes to return his rental car to the agency. The fuel tank in the car is half empty. It was full when he picked it up. (The car has a 12-gallon fuel tank.) He doesn't think he can get gas and get to the agency to return the car in time. Returning the car a day late will result in an extra daily rental charge of $32.00 and refueling the car on his own will cost $2.59 per gallon at the local gas station. Which of the following statements is true?
a.
It would be cheaper to refuel the car and return it a day late.
b.
It would be cheaper to return the car on time and pay the refueling costs.
c.
It would cost about the same to return the car on time without gas or one day late with gas.
d.
Tim is not responsible for refueling the car when he returns it.
Answer:
B
Step-by-step explanation:
Although this problem is quite long and exhausting, it is deceptively simple.
We know that his 12-gallon fuel tank is only half full, so we know that the car needs 6 more gallons of fuel.
If he turns in the car late, he will have to pay y = 2.59x + 32.00, where x is the number of empty gallons (in this case, 6)
In this case, he will pay 2.59(6) + 32.00 = $47.54
If he turns in the car on time, he will have to pay y = 4.50x + 5.00, where x is the number of empty gallons (still 6).
In this case, he will pay 4.50(6) + 5.00 = $32.00
Using these results, we know that B must be true.
A match box dimension is 4cm×2.5cm×1.5cm.What will be volume of a packet containing such 6 match boxes?How many such packets can be placed in a cardboard box whose size is 60cm×30cm×24cm?
You have a triangle with one side length of 5 and side B
with a length of 13. What is the length of the diagonal?
Fastest answer will get brainliest
Answer:
13.9283882772
Step-by-step explanation:
Pythagorean Theroem, so 5^2+13^2=194
Under square root 194=13.9283882772
Hope I helped!
Multiply.
Your answer should be a monomial in standard form.
(4z^3)(-3z^3)
The answer you are looking for is -12z^6. To find this answer, you first multiply the two values (4 and -3).
4 × -3 = -12
Next, you multiply the variables and exponents. When multiplying with exponents, you simply just add the exponents together. For this instance, simple just add z3 and z3 to get z^6.
Thus meaning your final answer as a monomial is -12z^6. Here's an image to show how i solved the problem. I hope this helps!!
PLEASE HELP
Sit-up
Push-up
Plank
Arm
circles
V-stretch
which event has a theoretical probability
of?
A. spinner landing on either sit-up
or V-stretch
B. spinner landing on push-up
c. spinner landing on either sit-up.
plank, or arm circles
D. spinner not landing on sit-up
Answer:
A
Step-by-step explanation:
Answer A has two of the five possibilities, and each section is equal so there is an equal probability for each. Add up the two possibilities for 2/5.
Juan sells a boat that he bought 5 years ago. He sells it for 60% less than he originally paid for it. If the original cost is b, write an expression that shows how much he sells the boat for
Answer:
b - 0.60b
= 0.40b
Step-by-step explanation:
The expression would be
here the original cost is b
And Juan sells it for 60% less than original price
So the expression is
= b - 0.60b
= 0.40b
This would be the expression that shows the selling price of the boat
HELP GEO TESTT
NEED ANSWERS 1, 2, 3, THXXXXXX
solve for the altitude to the base of an isosceles traingle given a leg is 16yd and the perimeter is 56yd
Answer:
one yard is equal to 3 feet so
The original price of a cell phone was $250. And its price was marked down to $218 during the holiday. What was the percentage of discount for the cell phone during the holiday? %
Answer:
I would say almost 15% the price dropped $32
What is the rule for the following geometric sequence? 64, -128, 256, -512...
Answer:
The previous number keeps getting multiplied by - 2
Step-by-step explanation:
64 ×-2 = -128
-128 × -2 = 256
256 × -2 = -512
Graph the function represented in the table on the coordinate plane
(-2,-3), (-1,-1), (0,1) (1,3) (2,5)
Hello, the graph sould be like this. Just remember, if you want to draw a graph, you should know the x and y state. x is from left and y is from right.
A middle school principal wants to change the lunch menu at the school. The principal surveys
the students to determine how the students would feel about the changes. Which survey
method will best produce the representative sample?
Please help! Use the model to figure these out. Will mark brainliest if you answer both questions correctly.
someone want to help me with my home work of algebra?
Answer:
I will help you
Step-by-step explanation:
Have a good day
z varies jointly with x, and y, and z=7 when x= 2, y= 2
Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
if i have 7 quarters, 13 nickles, 23 pennies, 6 dimes and two dollar bills, how much money do i have
Answer:
$5.23
Step-by-step explanation:
(7x.25)+13(.05)+.23+6(.10)+2.00=1.75+.65+.23+.60+2.00=$5.23
Answer:
$5.23
Step-by-step explanation:
7 quarters: $1.75
13 nickels: $0.65
23 pennies: $0.23
6 dimes: $0.60
2 dollar bills: $2
Total: $5.23
PLEASEEE i REALLY need help!! This is due tonight!!
1. Think of two things that you can measure. Give one that requires high precision, or a low level of uncertainty. Give another that can have lower precision, or a higher level of uncertainty.
2. Explain why you made your choices. Why does one measurement need to be more precise than the other?
Problem 1
Two things you could measure is a person's height and the speed needed to reach the planet Mars. The person's height can be measured with a low level of precision, which means we don't need to be that accurate. We could say "that person is about 6 feet tall" and whoever is listening would get a sense of their height. In contrast, we need high precision for a rocket speed to Mars because getting this figure wrong would likely cause disaster down the road. Very complicated mathematics is essential to make sure we hit the target required in space.
===============================================
Problem 2
As mentioned, we need high precision when it comes to anything dealing with space travel. If the calculations are wrong, then the spacecraft could crash somehow. As one example where things went wrong, engineers used the wrong values and the Mars lander ended up crashing into the planet rather than landing safely. The high cost of such space exploration missions means that it's very crucial to get precise values as much as possible, to as accurate as possible. Things like discussing a person's height isn't that essential to be very precise as we can just relay estimates to whoever we're talking to. This informal setting doesn't demand as much accuracy compared to something like a rocket launch.
please help me ( show ur work it’s multiple choice ):)
Identify the coefficient and constant in the expression: 3 + p - 4k
Answer:
4 is the co efficient and 3 is the constant
Co efficients are when a number is close to a variable, constants are a number by itself.
Answer:
The coefficient is 4The constant is 3Step-by-step explanation:
The coefficient is the number that is right next to a variable. So, the coefficient in this expression, would be 4 because it's right next to k.The constant is a number that it by itself. So, the constant in this expression, would be 3 because it's by itself (no variable attached to it).I hope this helps!