Using a system of equations, it is found that she attempted two questions incorrectly.
What is a system of equations?A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this question, the variables are:
Variable x: Number of questions attempted correctly.Variable y: Number of questions attempted incorrectly.Sreya scored 30 marks, with 16 correct questions, hence, considering the amount of points for each question, we have that:
2x - y = 30.
Since x = 16:
32 - y = 30
y = 2.
She attempted two questions incorrectly.
More can be learned about a system of equations at https://brainly.com/question/24372153
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Judging by appearance, is it reasonable to say that the figures below are similar? How do you know?
Answer:
C
Step-by-step explanation:
the proportions all seem to stay the same, so while the second figure is smaller, all parts of the figures seem to follow the same scaling factor.
there are 8 isoceles triangle "rays" emanating from a central circle in both figures. so, also the main characteristics are the same.
the smaller figure appears rotated compared to the other.
so, it was rotated and then dilated (or vice versa, as the sequence of these 2 operations is irrelevant).
PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!
A factory can work its employees no more than 5 days a week, and no less than 2 days a week. Create an inequality to represent the range of days an employee can work. Solve the inequality to determine the range in hours. Show work!
Answer:
2<=x<=5, range: 48-120 hours
Step-by-step explanation:
The minumum days is 2 and the maximum is 5, making our inequality 2<=x<=5, to find the range in hours we multiply 2 and 5 by 24 since there are 24 hours in a day.
Assume the radius of a circle is
unit
What is the area of the circle? What is the circumference?
How many radii are needed to wrap completely around the circle? Express your answer as a decimal approximation and as an exact value.
Does the size of the circle matter? That is, does the number of radii needed to wrap completely around the circle change as the radius of the circle gets larger or smaller? Why does this make sense?
Exactly how many radians are in
? In
Answer:
Step-by-step explanation:
They want you to see how radius is important. Just remember that one radian is one radius, that should help you see why radius is important.
They ask for the unit circle , that is a circle of one unit for the radius, which makes it super easy to calculate things for it, they ask what is the area, which is that famous formula, π[tex]r^{2}[/tex] , then they ask what's its circumference. which is that other famous formula 2πr
so to go all the way around a circle of one unit radius, it's 2π exactly or about 6.28..... units, call it meters, or feet or inches, it doesn't mater here.
the size of the circle doesn't matter here either, b/c we are using the radius , that relaationship doesn't change , all circles, what ever size , have this same relationship between the radius and radians. :P this is handy.
What is the surface area of this square pyramid?
o 72 cm2
o 384 cm
o 204 cm
o 240 cm2
Answer:
o 240 cm2
Step-by-step explanation:
John and Sam went to eat pizza. They each decided to order a
regular cheese pizza. John ate 8/16 of his pizza and Sam ate 2/4
of her pizza. Who ate most of their pizza?
A line up for tickets to a local concert has an average waiting time of 40 minutes with a standard deviation of 7 minutes. If 5000 tickets buyers were in
line, how many of them would expect to wait for less than 47 minutes?
3.A
2.59 %
3.B
.16 x 2,000 = 320
PLEASE ANSWER - BRAINLIEST IF 2 ANSWERS - 5 STAR RATING - THANKS (PROFILE TOO)
Five students plot their arm span and height
on the graph below.
Which of the following describes one
of these 5 students?
Answer:
She will save 1.24
Step-by-step explanation:
2.65 x 4 10 .60 plus .53 x 4 equals 12.72
6.48 x 2 equals 13.96
tell me if im wrong<3
Answer:
The correct answer would be D
Step-by-step explanation:
Most of the students have an average height around 166-180
and the arm span of 162-165
Student D has over the average 195 and an arm span of 188 so the correct answer would be D
Help please!
Carl’s transactions for a year are given in the table. His broker charged him $5 per trade. How much does Carl pay his broker? What is the final return after paying his broker’s fees?
Carl’s total brokerage fees were ($5, $15, $50) for the year. His final return for the year was ($2950, $2985, $2995) after deducting all fees but before paying taxes on the return.
Answer:
$15 and $2,985
Step-by-step explanation:
circle A has a radius of 21 meters. circle B
has a radius of 28 meters.
A) Find the circumference of each circle in terms of pi.
Answer:
Circle A: 42π m
Circle B: 56 π m
Step-by-step explanation:
Base on the given:
Circle A has a radius of 21 meters.
Circle B has a radius of 28 meters.
To Find:
Find the circumference of each circle in terms of pi.
Note:
pi = 3.14 (About)
Formula:
C = 2πr
Solution:
Circle A:
2 × π × 28
21 × 2 = 42
Circle B:
2 × π × 28
28 × 2 = 56
Thus,
Circle A : 42 π m
Circle B : 56 π m
Kavinsky
I need a equation for my parabola! I tried so many times and got it WroNg-
Answer:
Step-by-step explanation:
Not QUITE a parabola . but up until y = 4 it is close
Vertex = (-7-10)
Vertex form of parabola
y = a ( x+7)^2 -10 find a integer-coordinat point to calculate 'a'
I'll use -18,0
0 = a(-18+7)^2 -10
0 = 122 a -10 a = 10/122
y = 10/122 (x+7)^2 - 10 see graph below:
Jose plotted points on a coordinate plane to represent the vertices of a rectangle. The first two points are sown below. Which could be the other points Jose plotted? Which could be the other point Jose Plotted?
A C(6,5) and D(6,6)
B C(7,5) and D(7,1)
C C(5,8) and D(1.8)
D C(4,7) and D(4,3)
Please Someone Help Me With This Question
Answer:
B
Step-by-step explanation:
One easy way to solve this (considering it's on paper) would be to just plot the points of each option (because a rectangle is a quadrilateral which is equiangular (right angles) and a parallelogram).
Another way to solve this is the fact that it's angles are right angles. This means that a point has to be on the line y=5 and another point has to be on the line y=1. This means that the y coordinates of the other two points has to be 5 or 1, making the only possible answer B.
A. 0
B. 1
C. 2
D. Cannot be determined from the graph
I think the answer is c.2
A fruit stand has to decide what to charge for their produce. They need $ 5 for 1 apple and 1 orange. They also need $ 15 for 3 apples and 3 oranges. Put this information into a system of linear equations. Can we find a unique price for an apple and an orange?
Answer:
2 and 3
If you want to get complicated, then 2.39 and 2.61.
Step-by-step explanation:
5 = x + y
5 = 2 + 3
5 = 5
Your friend asks you to help him study and will pay you 5 dimes the first time you help him. You agree to help if he multiplies your payment by 5 for each study session. After 2 study sessions, you will receive 25 dimes, and after 3 study sessions, you will receive 125 dimes.
Complete and solve the equation that finds the number of dimes he will pay you after the 7th study session.
Answer:
78125 dimesStep-by-step explanation:
The payment for sessions makes a series
5 dimes, 5*5 = 25 dimes, 25*5 = 125 dimes, ...This series is GP with the first term of 5 and common ratio of 5.
The nth term would be
[tex]t_n=5*5^{n-1}[/tex]Use the equation above and find the 7th term
[tex]t_7=5*5^6 = 5^7 = 78125[/tex]Answer:
[tex]a_7=5(5)^{6}[/tex]
78125 dimes
Step-by-step explanation:
The given scenario can be modeled as a geometric sequence.
A geometric sequence has a common ratio (multiplier) between each term, so each term is multiplied by the same number.
General form of a geometric sequence:
[tex]a_n=ar^{n-1}[/tex]
where:
n is the nth terma is the first termr is the common ratioGiven:
The friend will pays 5 dimes the first time you help him.Therefore, a = 5
Given:
The friend multiplies your payment by 5 for each study session.Therefore, r = 5
Substitute these values into the formula to create an equation for the nth term.
[tex]\implies a_n=5(5)^{n-1}[/tex]
To find the number of dimes he will pay after 7 sessions, simply substitute n = 7 into the found equation:
[tex]\implies a_7=5(5)^{7-1}[/tex]
[tex]\implies a_7=5(5)^{6}[/tex]
[tex]\implies a_7=5 \cdot 15625[/tex]
[tex]\implies a_7=78125[/tex]
Therefore, the friend will pay 78125 dimes after the 7th study session.
Which is the marginal relative frequency for the people who do not like cantaloupe? startfraction 25 over 91 endfraction startfraction 66 over 200 endfraction startfraction 91 over 200 endfraction startfraction 66 over 91 endfraction
The marginal relative frequency for the people who do not like cantaloupe is 0.455.
What is Marginal Relative Frequency?This refers to the addition of the joint relative frequencies in a row or column of a data table.
Hence, we would make a representation of the table from the result of the survey of 200 random people is:
Watermelon Not watermelon Total
Cantaloupe 93 16 109
Not cantaloupe 66 25 91
Total 159 41 200
So, the marginal relative frequency for the people who do not like cantaloupe is 0.455.
Read more about marginal relative frequency here:
https://brainly.com/question/14101732
Answer:
C) 91/200
Step-by-step explanation:
Mr Jauregui hits a baseball straight up into the air. The baseball is hit with an initial vertical velocity of 16 ft/s when it is 6ft off the ground. The quadratic function that models the height h of the ball after t seconds in flight is h(t)=-16t+16t+6. How many feet above the ground will the ball be at the highest point of the flight?
Step-by-step explanation:
This is an example like it , because I 'm lazy to write it ...
Watch help video
The population of a city increases by 0.8% per year. If this year's population is
108,000, what will next year's population be, to the nearest individual?
[tex]\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &108000\\ r=rate\to 0.8\%\to \frac{0.8}{100}\dotfill &0.008\\ t=\textit{elapsed time}\dotfill &1\\ \end{cases} \\\\\\ A=108000(1 + 0.008)^{1}\implies A=108000(1.008)\implies A=108864[/tex]
2/5 + 1/3=
in its simpletes form
Answer:
[tex] \frac{2}{5} + \frac{1}{3} \\ = \frac{2 \times3 + 1 \times 5 }{15} \\ = \frac{6 + 5}{15} \\ = \frac{11}{15} [/tex]
it is right answer
I need help PLEASEEEEEEEEEEEEEE
Answer:
318
Step-by-step explanation:
318 is the required answer
I hope it helped you
So given Figure we need to find total surface area
=Area(ABCD)+Area(BCRQ)+Area(QRSP)+Area(ADSP)+Area(ABQP)+Area(DCRS)
=(AB×BC)+(BC×CR)+(QR×RS)+(AD×DS)+(AB×BQ)+(DC×CR)
From figure,
AB=DC=PQ=SR=9 cm
BQ=CR=AP=DS=11 cm
BC=AD=QR=SP=3 cm
On substituting these values We get
Surface Area=(9×3)+(3×11)+(9×3)+(11×3)+(9×11)+(9×11)
=27+33+27+33+99+99=318
I hope it helped you
Answer:
318
Step-by-step explanation:
A=2(wl+hl+hw)=2·(9·3+11·3+11·9)=318
what is the median of the distribution
HEELPPP HURRYYYY PLISSS
Answer:
Option C:- 1,232cm³
Step-by-step explanation:
radius r = 7 m
height h = 24 m
slant height s = 25 m
volume V = 1231.50432 m3
lateral surface area L = 549.778714 m2
base surface area B = 153.93804 m2
total surface area A = 703.716754 m2
Answer:
C 1232cm^3
Step-by-step explanation:
Hope this helps!
Which postulate proves these two
triangles are congruent?
B. SSA
A. HL
D. None, not congruent
C. ASA
i believe that it is choice: a.
i hope this helps
Round the underlined place 2.374
Answer:
The underlined place is not obvious, so I will do every possible round.
Step-by-step explanation:
2.374 rounded to the nearest hundredths will get you 2.37
2.37 rounded to the nearest tenths place is 2.4
2.4 rounded to the nearest 1 is 2
I need help with powers of ten
A train leaves from station A at 10:40.
It takes 3 hours and 5 minutes to reach station B.
What time does the train reach station B?
Answer:
it arrives at 1:45
Step-by-step explanation:
since it is 10:40, we will ad 3 hours, 11, 12, 1.
Then, we still have the 40, and will have to add the 5 minutes because of the 3 hours and 5 minutes.
Giving us, 1:45
will give brainliest to correct answer!!
Answer:
x = -5/6
Step-by-step explanation:
Since it is on the unit circle
x^2 + ( -sqrt(11)/6)^2 = 1 ^2 (pythagorean theorem)
x^2 = 1 - 11/36
x^2 = 25 /36
x = +-5/6 since x is in Q III it is the negative
The average monthly temperature in New Orleans, LA has a mean absolute deviation of 43.5*F what conclusion can you make about the average monthly temperatures in New Orleans, La.
The average monthly temperature in New Orleans, LA varies on average about 43.5°F from its monthly mean temperature.
How to find the mean absolute deviation of a discrete data?Suppose the data specified is of n sized as
[tex]x_1, x_2, \cdots , x_n[/tex]
Let this data's mean be [tex]\bar{x}[/tex]
Then, the mean absolute deviation of this data is the mean of the absolute differences of the observations from the mean of the data they belong to.
It is calculated as:
[tex]M.A.D = \dfrac{\sum_{i=1}^n|x_i-\bar{x}|}{n}[/tex]
So, Mean Absolute deviation is the average of the deviation (not caring if its above or below the mean) of the data values.
Since it is given that:
Mean absolute deviation of the temperatures (monthly) in New Orleans = 43.5°F, therefore, it means, the temperature averagely varies 43.5°F from its monthly average value.
where mean shows the average monthly temperature in New Orleans, LA.
Thus, the average monthly temperature in New Orleans, LA varies on average about 43.5°F from its mean temperature.
Learn more about mean absolute deviation here:
https://brainly.com/question/26462759
The triangles are similar.
What is the value of x?
Enter your answer in the box.
x =
Answer:
x=10
Step-by-step explanation:
As the two triangles are similar, the value of x = 10.
A dance studio offers different-sized dance classes. The largest-group class cost $10 each, and the small-group class cost $15 each. Kiesha paid $110 for a total of 8 classes.
Step-by-step explanation:
keisha got the both of em 10 times 8 would be 80 and then she paid for 2 15 dollar ones
Scott DuBois took out a simple interest loan of $1,800.00 for home repairs. The loan is for 12 months at 8 percent interest with a payment of $156.60. After 8 months, the balance is $615.87. He pays off the loan when the next payment is due. What is the final payment? How much is saved by paying the loan off early?
Answer: It's $619.98