Answer:
Step-by-step explanation:
1.95 is the correct answer
Help thank you ! Elimination method
Answer:
x=0
y=7
Step-by-step explanation:
Divide 6x-4y=-28 by -2..... -3x+2y=14
3x+5y=35
-3x+2y=14
--------------
7y=49
y=7
6x-4*7=-28
x=0
The position of an object at time t is given by s(t) = -9 - 3t. Find the instantaneous velocity (by using the limit) at t = 8 by finding the derivative
Answer: [tex]v=-3[/tex]
Step-by-step explanation:
Given
The position of a particle is [tex]s(t)=-9-3t[/tex]
Velocity is given by the derivative of position with respect to time
[tex]\Rightarrow v=\dfrac{ds}{dt}\\\Rightarrow v=-3[/tex]
So, velocity is constant at any point in time.
At t=8, it is [tex]v=-3[/tex]
A restaurant owner wants feedback on the items on the menu, so she leaves a customer satisfaction survey on the tables for customers to
complete if they wish. Which sampling method best describes this scenario?
O A) convenience sample
OB) simple random sample
O C) stratified random sample
OD) voluntary response sample
Answer:
O A) convenience sample
Step-by-step explanation:
O A) convenience sample
The sampling method which describes the situation is option D. voluntary response sample.
What are Sampling Methods?Sampling methods are methods used to select a sample using specific methods. This includes various types of probability sampling and non probability sampling methods.
This is included in the non probability sampling methods.
So it is either convenience sample or voluntary response sample.
Convenience sample is the selection of a sample which is convenient for you. That is, the sample which is most accessible is selected by the researcher.
Voluntary response sample is also the one which is most accessible. But the researcher is not selecting the sample. Instead the members of the population can decide whether to took part in the sample.
Here it is customer's wish to complete the survey.
So it is voluntary response sample.
Hence the correct option is D. voluntary response sample.
Learn more about Sampling Methods here :
https://brainly.com/question/12902833
#SPJ2
What is the value of xin the solution to this system of equations?
y + 2x = -1
y =1/2x+4
Answer:
x = -2.
Step-by-step explanation:
y + 2x = -1
y = -2x - 1
y =1/2x+4
Subtracting the last 2 equations:
0 = -2x - 1/2x - 1 - 4
5 = - 5/2 x
x = 5 / -5/2
= 5 * 2 / -5 = -2.
solve x squared + 5x + 6
Answer:
(x+3)(x+2)
Step-by-step explanation:
Equation: x^2+5x+6
x^2+3x+2x+6 (factored 5x)
seperate
x^2+3x / 2x+6
(x+3) (x+2)
Answer: (x+3)(x+2)
Natalie's aunt gave her $47 to spend on clothes at the mall. She bought 4 shirts that cost $4 each and a pair of pants that cost $13. How much money does Natalie have left to buy more clothes?
Answer:$18
Step-by-step explanation:4 * 4 = $16. One pair of pants = $13. 16 + 13 = $29. 47 - 29 = $18
The sum of Derek and Quency's ages is 19 years. If the difference
of their ages is 5 years what are their ages?
Verify that -(x+y)=(-x)+(-y) when x=3/4 and y=2/5
Answer:
note that when opening the bracket the value outside the bracket with be used to multiply all the values inside the bracket... for example -(3/4+2/5) the (-) subtraction sign will be used to multiply all the values in the bracket including the addition sign therefore changing plus to minus
Find the probability that a student is not playing a sport or not taking a foreign
language using the Venn Diagram below.
Answer:
18/25
Step-by-step explanation:
Total number of students = 23+14+10+3 = 50.
14 out of 50 are playing sport and taking a foreign language.
So the answer is (50 - 14) / 50
= 36/50
= 18/25.
=========================================================
Explanation:
The wording your teacher provided is a bit strange in my opinion. Though I think they are referring to the people who aren't taking both classes at the same time, but they could be taking exactly one class.
We have 23+14+10+3 = 50 students total and 14 of them are taking both classes. So 50-14 = 36 students are taking exactly one class, or they are taking neither of the classes.
This leads to a probability of 36/50 = (2*18)/(2*25) = 18/25 which points to choice B as the answer.
------------------
Side note:
If it asked "what is the probability that a student is not taking a sport AND not taking a foreign language?", then the probability would be 3/50 because there are 3 people not taking either class out of the 50 total. So the keyword "and" is the change made here, instead of the "or".
1. Devon saw that the shoes he
wanted were on sale. They
were normally $60 but were
now 20% off. How much were
the shoes after the discount?
Helppppp
Answer:
$48
Step-by-step explanation:
20%=1/5
60/5=12
60-12=48
Shane hit the ball 3 out of times. How is this written as a ratio?
Question is incomplete as number of trials isn't given. We'll use an hypothetical value to make x plain the situation
Answer:
Kindly check explanation
Step-by-step explanation:
Given that the number of trials = x
If the number of tines the ball was hit out if 'x' trials = 3
The ratio of the number of hits to the number of trials is written as :
Number of hits : Number of trials
3 : x
Just put the exact value of x in the equation above and if possible, reduce to simplest form.
Addison made some chilli with 3/4 of a can of black beans and 5/8 of a can of pinto beans. How many cans of beans did addison use in all?
Answer:
1 3/8 Cans
Step-by-step explanation:
When you have unlike denominators, Find the Least Common Denominator.
LCD: 8
Multiplying numerators and denominators to get the LCD in all fraction denominators
3 x 2
____ + 5/8
4 x 2
Then you need to re-write the equation with the equivalent fractions.
6/8 + 5/8
Simplify your answer
11/8 = 1 3/8
PLEASE HELP !!
Find the probability of a choosing a student that is taking a foreign language, given that the student is playing a sport using the Venn Diagram below.
Answer:
either B or C I think
this is what I need help with
1 and 2
Answer:
1. is no its a dialation and 2. is yes
Step-by-step explanation:
Rewrite the logarithmic equation: log4x = 5 in exponential form.
Answer:
4^5=x
x= 1045
Step-by-step explanation:
4 to the power of 5 is 1045:)
Answer:
The base of the log is the same as the base of the exponential form and in our case the base is 4. The value of the exponent is what the log is equal too and in our case it is 5. We already know the base is 4 and we want to raise it to the exponent of 5 so we get
x=45 *five on top*
x=1024
Step-by-step explanation:
Round your answer to the nearest hundredth.
C=2
A=?
B=8
Answer:
A = 8.2462112512353
I hope it's helps you
Does anybody know how to solve this problem, but using the work shown to help solve?
The value of y varies directly with x. When y=75, x= 0.5. What is the value of y when x is 2.25?
Even though I pulled up the work, I still don’t know what to do ♀️
Answer:
y=337.5 when x = 2 1/4
Step-by-step explanation:
Well first we want to know what's the function here
How do we get y to be 75 if x is .5?
75/.5 is 150
so can we say the function is 150x=y
Now lets plug
2 1/4 or 2.25 for x
2.25*150 = 337.5
y=337.5 when x = 2 1/4
Hope that helps!
In a lottery, the top cash prize was $615 million, going to three lucky winners. Players pick four different numbers from 1 to 59 and one number from 1 to 49 . A player wins a minimum award of $225 by correctly matching three numbers drawn from the white balls (1 through 59 ) and matching the number on the gold ball (1 through 49 ). What is the probability of winning the minimum award?
Answer:
10063571 out of 593750689 or 1.69491525424%
Step-by-step explanation:
To find probability when all variables are known, you can just multiply the numbers you need. In this case we multiply 59 * 59 * 59 *49 since these are the balls we are picking from. We can find the chance of the top prize by multiplying all the numbers. 59 * 59 * 59 * 59 * 49
Kim namjoon kim seokjin min yoongi....
Finish it if you are army
Also tell me what other groups you Stan I want to know lol
Answer:
JUNG HOSEOK PARK JIMIN KIM TAEHYUNG JEON JUNGKOOK BTS!!!
Step-by-step explanation:
Also, I answered about 12 hours late but oh well lol.
I don't stan any other groups beside BTS. But I do casually listen to other kpop groups ofc :)
North carolina has 12 less electoral votes than florida. Write and solve a subtraction equation if the total number of votes for both states is 64
Step-by-step explanation:
Given
North Carolina has 12 fewer electoral votes than Florida
The total number of votes is 64
Suppose Florida receives [tex]x[/tex] votes
thus, votes received by North Carolina is [tex]y[/tex]
So, we can write
[tex]\Rightarrow x-y=12\quad \ldots(i)[/tex]
[tex]\Rightarrow x+y=64\quad \ldots(ii)[/tex]
Solving the above equations we get
[tex]x=38,y=26[/tex]
A plane travels at a speed of 690 feet per second. How many feet will passengers travel on the plane in one minute?
Answer:
41,400 ft per second
Step-by-step explanation:
1 minute is 60 seconds.
x = ft per second
Ratio:
[tex]\frac{690}{1} =\frac{x}{60} \\\\x=41400[/tex]
HELPP HELPP HELPP HELPP HELP PLZ
Answer:
Volume= 216 cubic yards
Surface area: 276 square yards
Step-by-step explanation:
Find volume of rectangular prism:
V= lxwxh
V= 3x18x4
= 216 cubic yards
Find surface area:
SA= 2 x (front/back area) + 2 x (right/left area) and 2 x ( bottom/top area)
Front and Back Area:
A= l x w
A = 18 x 3
= 54 square yards
Right/ left Area:
4 x 3
= 12 square yards
Top/ Bottom Area:
18 x 4
= 72 square yards
54^2+12^2+72^2
= 108+24+144
=276 square yards
Answer:
DOUBLE CHEESS SANDWICH
Step-by-step explanation:
Someone please Help!!!!!
Answer:
I believe that the slant height is 15.3 because of pythagorean theorem.
This means that the surface area is 740.2
Step-by-step explanation:
i need help with this
A total of 200 people attended a carnival. Children tickets to the carnival cost $2.00. Adult tickets to the carnival cost $4.00. In all, the carnival made
$702 from the tickets sold. Show your work.
Write a system of equations to model the above situation. Define your variables.
- Solve the above system. Show your work or explain how you got your answer in the space provided.
-How many adult tickets were sold? How many children tickets were sold?
Answer:
$15.02
Step-by-step explanation:
add the money then add the 200. to what u get when u add the money
Cindi deposited $300 at 7.5% simple interest rate. How much interest will she earn after 5 years?
Answer:
$431
Step-by-step explanation:
using the formula P(1+r/100)^n,
we can substitute the P with $300,
substitute the r with 7.5%,
and substitute the n with 5.
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Step-by-step explanation:
try to factor them anx than set each bracket to 0 the negative one would not work
Answer:
5(−x−2)(x−7)
Step-by-step explanation:
You rent an apartment that costs $1300 per month during the first year, but the rent is set to go up $120 per year. What would be the monthly rent during the 8th year of living in the apartment?
Answer:
2140
Step-by-step explanation:
Year one. 1300
year 2. 120. 1420
year 3. 120. 1540
year 4. 120. 1660
year 5. 120. 1780
year 6. 120. 1900
year 7. 120. 2020
year 8. 120. 2140
or
7 x 120=840
1300 + 840 = 2140
I need helppppppppppp
Answer:
B
Step-by-step explanation:
Moving it to the right one unit and down one unit, you would have the answer be (x + 1, y-1) because moving it to the right is moving it in the direction of the positive numbers and moving it down is moving it in the direction of the negative numbers.
Sandra can run 3 miles in 20 minutes. How many minutes will it take her to run 7 miles?
Answer:
46.7 minutes to run 7 miles
Step-by-step explanation:
3 miles in 20 minutes boils down to the unit rate 3/20 miles/minute.
Multiply 7 miles by the unit rate (20/3 minutes/mile):
(7)(20)
---------- minutes, or approximately 46.7 minutes to run 7 miles
3