Answer:
11 students :)
Step-by-step explanation:
That should be correct if I'm wrong just ignore this.
The number of students who took more than 45 minutes to complete their homework is 11.
What is a stemplot?A stem-and-leaf display, also known as a stem-and-leaf plot, is a technique used to visualize the shape of distribution by displaying quantitative data in a graphical fashion, similar to a histogram.
For the given stemplot the number of students who took more than 45 minutes to complete their homework can be calculated by counting the number of observations that are more than 45.
Therefore, the observations that are more than 45 are 48, 49, 51, 53, 53, 53, 53, 55, 60, 60, and 60.
Hence, the number of students who took more than 45 minutes to complete their homework is 11.
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He price of a computer component at the QRCC bookstore is decreasing at a rate of 2.25% per year. Decide whether this decrease is linear or exponential.
Answer:
The decrease is exponential.
Step-by-step explanation:
An exponential decrease is something like:
f(x) = A*(r)^x with 0 < r < 1
A linear decrease is something like:
g(x) = -a*x + b with a > 0
First ai general formula.
If you have a quantity Q, decreased by an X%, the new quantity will be:
New Quantity = Q - Q*(X%/100%)
Now let's look at the question:
Suppose that the original price of the computer component is K
And the price as a function of the year is P(y)
Then we know that, in the year zero, the price is K.
P(0) = K
One year after, the price decreases by 2.25%
Then:
P(1) = K - K*(2.25%/100%) = K*(1 - 0.0225)
After another year, we will have another decrease of 2.25%
Then:
P(2) = K*(1 - 0.0225) - K*(1 - 0.0225)*(2.25%/100%)
P(2) = K*(1 - 0.0225)*(1 - 0.0225) = K*(1 - 0.0225)^2
We already can see the pattern, we can expect that in the year y, the price of the component will be:
P(y) = K*(1 - 0.0225)^y
This clearly is an exponential decrease.
I need help plz here is the question What is equevalent to 3 to 10 ? plz due in 6hr
Answer:
930 is equivalent to 310 because 9 x 10 = 30 x 3 = 90. 1240 is equivalent to 310 because 12 x 10 = 40 x 3 = 120.
HELPPP QUCIKKK
6.75 cm
a. Draw or describe the net of this triangular prism. Make sure to include the dimensions of each part of the net.
b. Use your net to calculate the surface area of the prism.
UPDA
(don’t reply with a link)
3. What is the simplified form of 4 V3 – V27?
?
A. -5V3
B. -7V3
C. V3
D. -V9
Please help me noww
Answer:
C
Step-by-step explanation:
Using the rule of radicals
[tex]\sqrt{a}[/tex] × [tex]\sqrt{b}[/tex] ⇔ [tex]\sqrt{ab}[/tex]
Simplify [tex]\sqrt{27}[/tex]
= [tex]\sqrt{9(3)}[/tex]
= [tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex]
= 3[tex]\sqrt{3}[/tex]
Then
4[tex]\sqrt{3}[/tex] - 3[tex]\sqrt{3}[/tex]
= [tex]\sqrt{3}[/tex] → C
x+10=2x-4 what does x=
Answer:
x = 14
Step-by-step explanation:
x + 10 = 2x - 4
x + 10 - 10 = 2x - 4 - 10
x = 2x - 14
x - 2x = 2x - 2x - 14
- x = - 14
- x ÷ - 1 = - 14 ÷ - 1
x = 14
What is the volume of this solid?
Answer:
B. 1527
Step-by-step explanation:
V=Ah===> πr²h
(9ft)²×3.14×6ft===>
254.34ft²×6ft≈1527
Can someone please help me with math.
Answer:
16) x = 11
17) C
Step-by-step explanation:
16) take square root of each side
17) look for the answer that has a +1 as the y-intercept and a positive slope
Army has 2 monkeys in the yard making love and 1 chicken master-bating, is the chicken gonna have kids ?
Answer:
no bc its 1 chicken
Step-by-step explanation:
Answer:
uhhhh no
Step-by-step explanation:
Write each percent as a decimal.
Draw a diagram or number line to
illustrate each percent.
a) 120% b) 250% c) 475%
d) 0.3% e) 0.53% f) 0.75%
Answer:
1.20 2.50 4.75 0.003 0.0053 0.0075
Step-by-step explanation:
Divide each percent by 100 to get the decimal form.
Sorry for not showing a diagram, but I hope this helps!
Clare buys an item with a normal price of $24, but saves $6 by using a coupon. For what percentage off is this coupon.
Answer:
25%
Step-by-step explanation:
6×4 =24
25×4=100
I just see it like this, not sure why but that's how my mind processed it. good luck
Given f(x) = 1/3(4 - x)2,what is the value of
f(16)?
Answer:
f(16)= -8
Step-by-step explanation:
f(16)= 1/3(4-16)2
Answer:
-8
Step-by-step explanation:
To answer this question, you must plug in the given 16 to the equation
f(16)= 1/3(4-16)2
f(16)= 1/3(-12)2
f(16)= 1/3(-24)
f(16)= -8
Determine whether the conclusion is valid. Explain. You want to determine the number of students in your school who have visited a science museum. You survey 50 students at random. Twenty have visited a science museum, and thirty have not. So, you conclude that 40% of the students in your school have visited a science museum.
Answer: The conclusion is valid
Step-by-step explanation:
Number of students surveyed = 50
Number of students who visited a science museum = 20
Number of students who haven't visited a science museum = 30
Percentage of student that have visited a Science museum:
= 20/50 × 100
= 40%
The conclusion is valid based on the calculation.
Which of the following situations have a sum of 0? Select all that apply.
The temperature was 10' at 7:00a.m. The temperature then rose 10' from 7:00 am to 8:00 am
The temperature was 7" at 11:00 am. The temperature then drops 7" from 11:00 am to 1:00 pm
The temperature drops 14" from 6:00 am to 8:00 am. The temperature then drops 14" from 8:00 am to 10:00 am
The temperature drops 15" from 5:00 am to 6:00 am. The temperature then rises 15" from 6:00 am to 7:00 am
The temperature was -5° at 9:00 am. The temperature then dropped 5 from 9:00 am to 10:00 am
O The temperature was -3º at 4:00 a.m. The temperature then rose 3" from 4:00 am to 5:00 a.m
please help!!
Answer:
B
Step-by-step explanation:
if the temp is at 7 then drop seven, the answer is 0
The total amount y (in dollars) in your savings account after buying
x video games is represented by y 80 – 10x. You have $20 in your
account after buying video games. How many video games did you buy?
-
O 6
8
5
Answer:
i think the answer is 6
(2x-7)(5x+75)=0
Solve this using factoring, what are the two x’s?
Note : a × b = 0 ==》 a = 0 Or b = 0
_________________________________
( 2x - 7 )( 5x + 75 ) = 0
2x - 7 = 0 ===》 2x = 7 ===》 x = 7 / 2
===》 x = 3.5
Or
5x + 75 = 0 ==》 5x = - 75 ==》 x = - 75 / 5
==》x = - 15
Step-by-step explanation:
(2x-7)(5x+75)=0
2x(5x+75) -7 (5x+75)=0
10x^2 + 150x - 35x - 525 =0
10x^2 + 115x - 525 =0
5(2x^2 + 23x - 105 ) =0
2x^2 +30x-7x - 105 =0
2x ( x + 15 ) -7 ( x + 15) = 0
(2x-7) (x + 15) =0
so, 2x-7=0 and x+15 =0
x = 7/2 and x = -15
#cancelicseboardexam2021
PLEASE HELP I WILL MARK BRAINLIEST
Answer:
1 or 2
Step-by-step explanation:
but om pretty sure its 2
Answer:
22
Step-by-step explanation: its 22 because 1/4 x 22= 5 1/2
Use one of the triangles to approximate PQ in the triangle below.
Choose 1 answer:
(Choice A)
4.5 units
(Choice B)
5.4 units
(Choice C)
9.1 units
(Choice D)
10.9 units
Answer:
The answer is B 5.4 units
Step-by-step explanation:
The approximate value of PQ in the right angle triangle is 5.4 units.
Right angle triangleA right angle triangle has one of its angles as 90 degrees. Therefore, the sides can be found by trigonometric ratios.
Hence,
sin 50 = opposite / hypotenuse
sin 50 = PQ / 7
cross multiply
PQ = 7 sin 50°
PQ = 7 × 0.76604444311
PQ = 5.36231110183
PQ = 5.4 units
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A 64 ounce bottle of organic orange juice costs $14.72. What is the price
per ounce?
Anna typed 600 words in 15 minutes. How many words can she type per
minute?
A 64 ounce bottle of organic orange juice costs $14.72. What is the price
per ounce?; 0.23
Anna typed 600 words in 15 minutes. How many words can she type per
minute?; 40 words per minute
In cm, the lengths of the sides of a rectangle are 30 and 24. Find the nearest degree the measure of the angle formed by a diagnol and one of the longer sides
Answer:
38.42cm
Step-by-step explanation:
Given that the length of the sides of a rectangle are 30 cm and 24 cm.
The length of the diagonal can be obtiaed using Pythagoras rule
Length of the diagonal = hypotenus
Hypotenus = sqrt(opposite ² + adjacent ²)
Opposite and adjacent sides are 30cm and 24 cm
Hypotenus = sqrt(30² + 24²)
Hypotenus = sqrt(900 + 576)
Hypotenus = sqrt(1476)
Hypotenus = 38.419
Length of diagonal = 38.42cm
Answer:
find the size of angle O to the nearest degree
7. A car drives 50 miles in the first hour on the road, 70 miles during the 2nd hour and 10 miles for 1/2 hour (traffic jam), then 60 miles in the final half hour of the trip. What was the average speed for the entire trip?
Answer:
Step-by-step explanation:
Average Speed = Total Distance / Total Time
Total Distance = 50+ 70 + 10 + 60 = 190 Miles
Total Time = 1 + 1 + 1/2 + 1/2 = 3 hours
Average speed = 190 / 3 = 63.3 mph
help plsss!! thank you so mhcb
The right end of this board lines up with the marks halfway between 4 and 5 (Iready) How long is the board?
Answer:
[tex]Halfway = 4.5[/tex]
Step-by-step explanation:
Given
4 and 5
Required
Determine the halfway
This is calculated as:
[tex]Halfway = \frac{1}{2}(4 + 5)[/tex]
[tex]Halfway = \frac{1}{2}(9)[/tex]
Remove bracket
[tex]Halfway = \frac{1}{2} * 9[/tex]
[tex]Halfway = 4.5[/tex]
Answer: 4 1/2
Step-by-step explanation:
Can anyone answer this I need it ASAP plz
Answer: x = 13.4
Step-by-step explanation:
1. Subtract 90 degrees and 33 degrees to get angle X, which is 57 degrees.
2. Using Laws of Sine, plug in the known elements of the triangle:
(16) / (sin(90)) = (x) / (sin(57))
3. Cross multiply, this will leave 16sin(57) = xsin(90)
4. Divide sin(90) to the other side, leaving x = (16sin(57)) / (sin(90))
5. Plug this into a calculator and your final answer should be 13.4
You have total coins for a total of $. . You only have quarters and dimes. Let represent the number of quarters and represent the number of dimes.
Answer:
[tex]Quarters = 41[/tex]
[tex]Dimes = 18[/tex]
Step-by-step explanation:
Given
[tex]Coins = 59[/tex]
[tex]Worth = \$12.05[/tex]
[tex]d = dimes[/tex]
[tex]q = quarters[/tex]
Required
The number of each coin
The total coins can be represented as:
[tex]d + q = 59[/tex]
[tex]1\ quarter = \$0.25 \\ 1\ dime = \$0.10[/tex]
So, the worth of the coin is:
[tex]0.25q + 0.10d = 12.05[/tex]
The equations to solve are:
[tex]0.25q + 0.10d = 12.05[/tex]
[tex]d + q = 59[/tex]
Make d the subject in: [tex]d + q = 59[/tex]
[tex]d =59 - q[/tex]
Substitute [tex]d =59 - q[/tex] in [tex]0.25q + 0.10d = 12.05[/tex]
[tex]0.25q + 0.10(59 - q) = 12.05[/tex]
[tex]0.25q + 5.9 - 0.10q = 12.05[/tex]
Collect like terms
[tex]0.25q - 0.10q = 12.05 - 5.9[/tex]
[tex]0.15q = 6.15[/tex]
Solve for q
[tex]q=\frac{6.15}{0.15}[/tex]
[tex]q=41[/tex]
Substitute [tex]q=41[/tex] in [tex]d =59 - q[/tex]
[tex]d = 59 - 41[/tex]
[tex]d = 18[/tex]
So:
[tex]Quarters = 41[/tex]
[tex]Dimes = 18[/tex]
Algebra 1 - One question, I'm not sure how to solve and it's worth 4 marks. That means there are 4 things I must include in my answer, but I don't know what they are.
The price of a public metro ride rose from $2 to $2.50. If you graphed thefunction f(x) = the cost of x metro rides, how would the graph changeafter the fare rose?
True or false If a system produced a true statement by the elimination method. It has no solution?
please help me!!!!!!!
Answer:
Step-by-step explanation:
What is the value of x in the matrix equation below?
3
8
х
10
Х
-2
3
5
-1
6
-7 -4
0 -1
ОО
1
Answer:
The horizontal value in a pair of coordinates: how far along the point is. The X Coordinate is always written first in an ordered pair of coordinates (x,y), such as (12,5). In this example, the value "12" is the X Coordinate. Also called "Abscissa" See: Coordinates.
Step-by-step explanation:
The value of x in the matrix is 1.
Option D is the correct answer.
What is a matrix?Matrix is a form of writing items in rows and columns.
We have,
From the matrix addition, we can write as,
-2x + 3 = x
Now,
Combining the like terms.
-2x - x + 3 = 0
-3x = -3
Dividing 3 into both sides.
-x = -1
x = 1
Thus,
The value of x in the matrix is 1.
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What is the answer to my question.
Answer:
132
Step-by-step explanation:
8×4×3 + 3×3×4
96+36=132
when would you solve by elimination?
Answer:
when its a linear equation
Step-by-step explanation:
Answer:
In the elimination method you either add or subtract the equations to get an equation in one variable. When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable.
