Solve the system if equations
x + y = 30
y = 9x
Answer:
(3, 27)
Step-by-step explanation:
I will use substitution method.
y = 30-x
y = 9x
30 -x = 9x
30 = 10x
x = 3
So far we have (3, ?).
Now that we know x, we can plug in x to one of the equation to find y. I will plug it in at the bottom equation.
y = 9(3)
y = 27
Now we know that the solution is (3, 27).
Use a number cube to determine the theoretical probability of the event. Rolling a 2
Answer:
1/6
Step-by-step explanation:
A cube has six sides
Six probable outcomes
rolling a 2 can only happen on 1 of those outcomes
so 1/6
Answer:
1/6
Step-by-step explanation:
The Answer is 1/6
400000 divided by 625
Answer:
643.08
Step-by-step explanation:
You can use long division or a calculator
Answer:
640
Step-by-step explanation:
(used a calculator)
5/6 divided by 1/4 equals?
Answer:
10/3 or 3 1/3
Step-by-step explanation:
You receive 5 bonus points in class Wright an integer to represent that
Answer:
to represent what-
Step-by-step explanation:
What are the 3 conditions that a graph must possess in order for it to be a proportional graph?
Answer:
The 3 things in order for a graph to be proportional is:
This means that as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same. The graph of the proportional relationship equation is a straight line through the origin.
Step-by-step explanation:
BRAINLIEST???
Hope This Helps!!!
Which letter represents the sum of (–4 + 3i) and (6 – i)?
Answer:
2+2i = 2(1+i)
Step-by-step explanation:
2+2i = 2(1+i)
Please answer correctly
Answer:
answer
Step-by-step explanation:
angle B=63
AC=23.5
AB=26.4
Find the magnitude of the vector from the origin to (8,-6) and write the vector as the sum of unit vectors
Answer:
Step-by-step explanation:
let V be the vector.
V=8i-6j
|V|=√(8²+(-6)²)=√(64+36)=√(100)=10
Answer:
D on edg2021
Step-by-step explanation:
Just took the test
Quadrilateral A'B'C'D' is the image of quadrilateral ABCD under a dilation with a scale factor of 4. What is the length of segment CD'?
Answer:
C'D' = 8
Step-by-step explanation:
A'B'C'D' is the figure gotten by multiplying each segment of Quadrilateral ABCD by the scale factor of 4.
To get the length segment of C'D', multiply the length of CD by 4.
CD = 2 units
Therefore, C'D' = 4*2
C'D' = 8
Answer: it was 12 :(
Step-by-step explanation:
I got it wrong on khan academy but then I checked the explanation and it wasn’t 8 but 12.
Y=-7x + 15 cordinates of the y intercept
Answer: Don’t quite understand what you are asking but the Y-Intercept = 15, and the slope would be -7. Hope this helps you
Step-by-step explanation:
How do I solve these?
Answer:
I don't know
Step-by-step explanation:
is there a picture of a graph or anything
An ice cream shop has a sign in their window that says, "We sell 12,000 scoops per month." The number of scoops has been rounded.
Which could be the number of scoops sold if they rounded to the nearest thousand
Answer:
around 11,000?
Step-by-step explanation:
The number of ice cream scoops sold from the shop if it is rounded to the nearest a thousand are 12,111 and 11,589.
What is the nearest thousand of a number?To write the large number at the nearest round, we use the nearest thousand of the number. The rounded to the nearest thousand of a number makes the calculation easy, and the result to understand batter.
To round a number to nearest thousand, follow the steps below-
Step 1) Write down the number, which you have round to the nearest thousand.Step 2) Select the number which is at the thousand or at the 3rd place from right side of the number.Step 3) Look at the number which immediate right to this number. If this number is less than 5, then make all the digits right of it 1as zero.Step 4) Look at the number which immediate right to this number. If this number is more than 5, then replace all the digits right of it with zero by adding 1 into the thousand place digit.An ice cream shop has a sign in their window that says, "We sell 12,000 scoops per month." The number of scoops has been rounded.
The options of this problem are-
A) 10,999B) 12,111C) 11,589The number of scoops sold if they rounded to the nearest thousand. As the nearest number is 11,589 which is less than the 1200 which shows some of the ice cream has been sold.
Also the number 12,111 can be rounded to 12000.
Hence, the number of ice cream scoops sold from the shop if it is rounded to the nearest a thousand are 12,111 and 11,589.
Learn more about the nearest thousand of a number here;
https://brainly.com/question/587947
What is the greatest common factor of 8x-6
A.2
B.2x
C.3x
What is this missing angle?
Help I need the answer
log101 = -1 0 1
Answer:
wht is the question
Step-by-step explanation:
Find x
14. (3x + 32) (5x - 8)
15. ( 2x - 10) ( 4x + 16 )
Answer:
14. -32/3
15. -4 and 5
Step-by-step explanation:
hope it will help you
7.
Find the specified value.
(2x +5)
a. Using the figure to the right, find the value of x.
b. Using the figure to the right find the value of y.
Answer:
a. The value of x is [tex]38^{o}[/tex].
b. The value of y is [tex]25^{o}[/tex].
Step-by-step explanation:
a. Applying the vertically opposite principle,
(2x + 5) = (3x - 33)
2x + 5 = 3x - 33
33 + 5 = 3x - 2x
38 = x
⇒ x = [tex]38^{o}[/tex]
b. Sum of angles on a straight line = [tex]180^{o}[/tex]
So that,
(4y - 1) + (3x - 33) = [tex]180^{o}[/tex]
But,
( 3x - 33) = (3x38 - 33)
= 114 - 33
= [tex]81^{o}[/tex]
(4y - 1) + [tex]81^{o}[/tex] = [tex]180^{o}[/tex]
4y - 1 = [tex]180^{o}[/tex] - [tex]81^{o}[/tex]
= [tex]99^{o}[/tex]
4y = [tex]99^{o}[/tex] + 1
= [tex]100^{o}[/tex]
y = [tex]\frac{100}{4}[/tex]
= [tex]25^{o}[/tex]
y = [tex]25^{o}[/tex]
The value of x is [tex]38^{o}[/tex], and y is [tex]25^{o}[/tex].
Solve the system of equations
y = 5x + 32
y = -4x - 22
a. (6, 2)
b. ( -6, -2)
c. ( -6, 2) (correct)
d. No solution
Answer:
Option c is right:
(-6 , 2)
Step-by-step explanation:
( -6 , 2)
GET 5 STARS, THANKS, AND BRAILIEST!!!
Solve by elimination:
2x + y = 20
6x - 5y = 12
Group of answer choices
(7 , 6)
(6 , 7)
(-7 , -6)
(4 , 10)
Answer:
its (7,6)
Step-by-step explanation:
2x + y = 20
2(7) + 6 = 20
14 + 6 = 20
20 = 20
6x - 5y = 12
6(7) - 5(6) = 12
42 - 30 = 12
12 = 12
Kendra is saving money to go buy a new bike. She needs at least $120. Her mom gave her $25 to get started. Let m represent the amount of money Kendra still needs to save.
Answer:
Kendra still need at least at least 95 dollars for her bike
James can eat 12 jelly beans per minute, and Jenny can eat 8 jelly beans per minute. How
many minutes will it take Jenny and James to eat a combined total of 100 jellybeans?
Answer:
5 mins.
Step-by-step explanation:
hope his helps good luck
Answer:
5 minutes
Step-by-step explanation:
A train traveled 260 miles in 4 hours. If the train’s average rate of travel increases by 12 mph, what is its new average rate of travel?
A. 77 mph
B. 65 mph
C. 60 mph
D. 48 mph
Answer:
Correct option A
Step-by-step explanation:
Average rate = 260/4 = 65 mph
It increases by 12mph
So 65+12 = 77 mph
Correct option A
How do i solve the equation please (Explain)!!
Answer:
a = 4.8
Step-by-step explanation:
9 - 4a + 12 = 6a - 27
21 - 4a = 6a - 27
48 - 4a = 6a
48 = 10a
4.8 = a
can someone do it fast ill give you brainiest!!!!
Answer:
Step-by-step explanation:
15/308/5025/3220/3610/36Answer:
answers below
Step-by-step explanation:
1. 3/10 x 5/3= 15/30 or 1/2
2. 1/10 x 8/5= 8/50
3. 5/8 x 5/4= 25/32
4. 5/12 x 4/3= 20/36
5. 1/4 x 10/9= 10/36
Please help if you answer this correctly I will give you brainliest. Is this a zero slope or an undefined slope?
Picture below
Answer:
undefined
Step-by-step explanation:
m= y/x
and x =0
Answer:
It is undefined slope
Step-by-step explanation:
Danny writes this phrase:
Three less than five times a number
Enter the expression that represents Danny's phrase into the box.
Use x for the variable.
PLZZ hurry no rush doe
Hey there!
The answer is 5x - 3
"five times a number" represents multiplication, so "5x"
"three less" represents subtracting 3, so "-3"
put together we get "5x - 3"
Good luck and have a nice day!
What numbers are a distance of 12 unit from 35 on a number line?
Select the locations on the number line to plot the points.
30 points
Answer:
The numbers are 1/10 & 11/10
Answer:
yes means yes
Step-by-step explanation:
Members at a popular fitness club currently pay a $40 per month membership fee. The owner of the club wants to raise the fee to $50 but is concerned that some members will leave the gym if the fee increases. To investigate, the owner plans to survey a random sample of the club members and construct a 95% confidence interval for the proportion of all members who would quit if the fee was raised to $50.
Answer:
(a) It implies that if many samples of the members of the fitness club were selected and many 95% confidence intervals were constructed, the true proportion of all members of the fitness club who would quit would be captured by about 95% of the intervals.
(b) It implies that there is a 95% confidence that the true proportion of all members of the fitness club who would quit if there is an increase in the fee will be captures by the interval 0.105 – 0.225 (i.e. calculated as 0.18 – 0.075 = 0.105 and 0.18 + 0.075 = 0.225).
(c.) No, as there are plausible values above 20 as it is not all the intervals that are below 20. The implication of this is that there is a possibility that more than 20% would quit.
(d) The implication of the condition is that the distribution of the sample is approximately normal. This gives the opportunity to do estimations. However, the it will not be possible to estimate the 2 critical values if the distribution is not approximately normal. .
Step-by-step explanation:
Note: This question is not complete. The complete question is therefore provided before answering the question as follows:
Members at a popular fitness club currently pay a $40 per month membership fee. The owner of the club wants to raise the fee to $50 but is concerned that some members will leave the gym if the fee increases. To investigate, the owner plans to survey a random sample of the club members and construct a 95% confidence interval for the proportion of all members who would quit if the fee was raised to $50.
(a) Explain the meaning of "95% confidence" in the context of this study.
(b) After the owner conducted the survey, he calculated the confidence interval to be 0.18 +/- 0.075. Interpret this interval in the context of the study.
(c.) According to the club’s accountant, the fee increase will be worthwhile if fewer than 20% of the members quit. According to the interval from part (b) can the owner be confident that the fee increase will be worthwhile? Explain.
(d) One of the conditions for calculating the confidence interval in part (b) is that np ≥ 10 and n(1 – p) ≥ 10. Explain why it is necessary to check this condition.
The explanation of the answer is now provided as follows:
(a) Explain the meaning of "95% confidence" in the context of this study.
It implies that if many samples of the members of the fitness club were selected and many 95% confidence intervals were constructed, the true proportion of all members of the fitness club who would quit would be captured by about 95% of the intervals.
(b) After the owner conducted the survey, he calculated the confidence interval to be 0.18 +/- 0.075. Interpret this interval in the context of the study.
It implies that there is a 95% confidence that the true proportion of all members of the fitness club who would quit if there is an increase in the fee will be captures by the interval 0.105 – 0.225 (i.e. calculated as 0.18 – 0.075 = 0.105 and 0.18 + 0.075 = 0.225).
(c.) According to the club’s accountant, the fee increase will be worthwhile if fewer than 20% of the members quit. According to the interval from part (b) can the owner be confident that the fee increase will be worthwhile? Explain.
No, as there are plausible values above 20 as it is not all the intervals that are below 20. The implication of this is that there is a possibility that more than 20% would quit.
(d) One of the conditions for calculating the confidence interval in part (b) is that np ≥ 10 and n(1 – p) ≥ 10. Explain why it is necessary to check this condition.
The implication of the condition is that the distribution of the sample is approximately normal. This gives the opportunity to do estimations. However, the it will not be possible to estimate the 2 critical values if the distribution is not approximately normal.
Please help me help this
