Answer:
x=1 and y=−1
Step-by-step explanation:
Multiply the first equation by 5,and multiply the second equation by 6.
5(−3x−6y=3)
6(5x+5y=0)
Becomes:
−15x−30y=15
30x+30y=0
Add these equations to eliminate y:
15x=15
Then solve15x=15for x:
15x=15
15x
15
=
15
15
(Divide both sides by 15)
x=1
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
−3x−6y=3
Substitute1forxin−3x−6y=3:
(−3)(1)−6y=3
−6y−3=3(Simplify both sides of the equation)
−6y−3+3=3+3(Add 3 to both sides)
−6y=6
−6y
−6
=
6
−6
(Divide both sides by -6)
y=−1
In the function, f(x) = 3 − sin(x + π), three transformations have been applied. Briefly describe the three transformations.
Answer:
The three transformations used are -
Vertical shift
Phase shift
Period
Step-by-step explanation:
Given - Given the function, f(x) = 3 − sin(x + π)
To find - In the function, three transformations have been applied. Briefly describe the three transformations.
Proof -
Given that, The function is f(x) = 3 − sin(x + π)
We know the
The general form of sine function is -
y = Asin(Bx + C) + D
where
A is the Amplitude
The period is [tex]\frac{2\pi }{B}[/tex]
Phase (Horizontal) shift is C
Vertical Shift id D
Here, The function is f(x) = 3 − sin(x + π)
By Comparing with General form of sin function, we get
-1 is the Amplitude
The period is 2[tex]\pi[/tex]
Phase (Horizonal) shift is [tex]\pi[/tex]
Vertical shift is 3
The three transformations used are -
Vertical shift
Phase shift
Period
knowing the difference between an experimental group and a control group is most relevant to understanding the nature of: group of answer choices random sampling. replication. hindsight bias. independent variables.
The experimental group is given the experimental treatment, and the comparison group is statistically significant.
Which three attitudes are the basis of the scientific viewpoint?Curiosity, scepticism, and humility are described by historians of science as the three attitudes that form the bedrock of the scientific viewpoint. Larger, more representative sample sizes aid in the production of accurate and valid data.When random sampling is used, every member of the population has an equal chance of being chosen, resulting in the collection of a representative sample. The odds of generalising the study's findings to the population increase with the use of a random sample. The study's margin of error is reduced with higher study sample sizes.) Researcher control over the possibility of reporting false-negative or false-positive findings is made possible by larger sample sizes. Results will be more precisely predicted with a larger sample size.To learn more about random sampling refer to :
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-7x+y=-19 In standard form
Answer: x= 1/7y + 19/7 (Standard form will be:7x−y=19)
Step-by-step explanation:
Step 1: Add -y to both sides.
−7x+y+−y=−19+−y
−7x=−y−19
Step 2: Divide both sides by -7.
−7x/−7
= −y−19/−7
x= 1/7y + 19/7
.... someone pls help me !!! pleaseee
Answer:
m=4 is the correct answer
Finn jumped 200 times in 10 hours. At what rate, how many times would he jumped in 12 minutes?
Answer: 4 times
Step-by-step explanation: I got 4 times. Here's how to solve it:
Set up a proportional relationship, but first, we need to convert 10 hrs into mins:
1 hour = 60 mins
To find how many minutes are in 10 hours, we multiply 60 by 10, which equals 600.
So, therefore there are 600 mins in 10 hours. Now, we can set up our proportional relationship:
[tex]\frac{200}{60} = \frac{?}{12}[/tex]
So, if we know 12 is a factor of 60, we should divide 60 by 12, and we should get 5. So, now we do the same with the 200. We do 200 / 50, and we get 4. I hope this helps!
9. The diagram below shows a plan for a park. ABCD is a rectangle. APB and DQC are semicircles
centred at X and Y. Given AB = 7 cm and AC = 25 cm. Calculate the perimeter of the park in cm.
Answer:
this is the answer please give brainliest
It costs an initial $5 to ride a taxi and an additional $2 per mile driven. Which expression represents how much money you pay after riding m miles?
Answer:
x=5+2m
Step-by-step explanation:
With the information provided, you can say that the money you pay after riding m miles is equal to the initial cost to ride the taxi plus the result of multiplying the cost per mile driven for the number of miles, which can be expressed as:
x=5+2m, where:
x is the money you pay
m is the number of miles driven
Write an equation in slope-intercept form of the line that passes through the points (-5,-12) and 2,9) .
The equation is y=
Answer:
y=3x+3
Step-by-step explanation:
Joaquin used two types of flour in a muffi n recipe. How much flour did he use in all? Solve any way you choose.
Answer:
Total flour used = 3 1/6 c
Step-by-step explanation:
Whole wheat flour = 1 1/2 c
Buckwheat flour = 1 2/3 c
How much flour did he use in all?
Total flour used = Whole wheat flour + buckwheat flour
= 1 1/2 c + 1 2/3 c
= 3/2 c + 5/3 c
= (9c + 10c) / 6
= 19c/6
= 3 1/6 c
Total flour used = 3 1/6 c
IM MARKING BRAINLYIST!!!!
Jim rented a truck for one day. There was a base fee of S 15.95, and there was an additional charge of 87 cents for each mile driven. Jim had to pay $189.08 when he returned the truck. For how many miles did he drive the truck?
Answer: I assume you are trying to find the
number of miles driven.
He paid $18 of which $15.95 was
the flat fee.
18.00
- 15.95
---------
$2.05 is the amount paid for mileage.
This is 205 cents for mileage
at 71 cents per mile. Divide
205 by 71 to get the miles driven.
205/71 = 2.9 miles.
Step-by-step explanation:
The entrance fee for the carnival is $7and the cost for a ticket for a
ride is $.25.
a. Write an equation for the total cost (C) if you go to the carnival
and ride r number of rides.
b. What is the total cost if you ride 15 rides?
Answer:
Step-by-step explanation:
Consider the following:
a) y=0.25x+7
b) $10.75
Explanation:
a)
y=mx+b is the slope-intercept form.
B is our Y intercept meaning any fee or initial charge that adds to total cost. In this situation, the initial fee of $7 is our Y-Intercept. . Our mx is the slope. A slope increases based on the amount (x) of certain things you have. In this situation, you are buying maybe 1, 2 or 3 tickets and each ride costs $0.25.
Our x remains the same, that is where we plugin the amount of tickets we will buy (x). The M value is the price per ticket which as said, is $0.25 per. Our slope therefore will be 0.25x.
Combining our Y-Intercept and our Slope will leave us with y (total cost) = 0.25x + 7
b)
We have found our slope, 0.25x+7
Now, we have to plugin our number of rides (x) which is 15.
If done correctly it should be 0.25(15)+7 and that is equal to $10.75 for 15 rides.
Kenneth can score 3,500 points per minute playing a video game. He has already scored 14,500 points. Write an equation that can be used to find the number of points, p, Kenneth has scored after time, t, in minutes. Then use your equation to find the number of minutes it will take Kenneth to score 46,000 points. Can someone please help me!
Answer:
3,500 (t) = 14,500 and it would take him about 13 minutes to get 46,000 points
Step-by-step explanation:
Brainliest pls
All the DJ’s that Marie interviewed for the party charged a flat fee for supplies and then charged per hour. One DJ was going to charge $200 for travel and music and then $10 per hour. The other DJ was going to charge $150 and then $15 per hour. How many hours would both DJ’s be the same price and what is that price?
How fast is a motorcycle that is going 6 miles in 4 minute?
Answer:90
Step-by-step explanation:
T h e r e a r e 235 seven t h - g r a d e st u d e n t s g o i n g o n a fi e l d t r i p . T h e sc h o o l h a s 5 b u se s t o t a k e t h e st u d e n t s. E a c h b u s h a s 22 se a t s, a n d 2 st u d e n t s c a n si t i n e a c h se a t . B a se d o n t h i s i n f o r m a t i o n , h o w m a n y st u d e n t s w i l l n o t b e a b l e t o r i d e o n a b u s f o r t h e fi e l d t r i p ?
The number of students who will not be able to ride on the bus for the school trip is given by the equation A = 15 students
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
The total number of students for the trip = 235 students
The number of buses = 5 buses
The number of students in a bus be = B
Now , each seat on the bus can occupy = 2 students
So , 22 seats can occupy = 22 x 2 students
22 seats in the bus can occupy = 44 students
So , the number of students in a bus B = 44 students
And , the total number of students in 5 buses = 5 x number of students in a bus B
Substituting the values in the equation , we get
The total number of students in 5 buses = 5 x 44
The total number of students in 5 buses = 220 students
So , the remaining number of students A = total number of students for the trip - total number of students in 5 buses
Substituting the values in the equation , we get
The remaining number of students A = 235 - 220
The remaining number of students A = 15 students
Therefore , the value of A is 15 students
Hence , the number of students is 15 students
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Nic borrowed $350 to buy a bow. The finance charge on the loan was $25 and the
term on the loan was 45 days. What was the APR for Nic's loan?
1 pts
In answering the question, we discovered that a sample size of 20 was required in order to reach this conclusion.
How big a sample is it?The sample size is the number of observations used to estimate a certain population. The population was used to determine the sample size.
The act of promoting a product to increase sales is known as advertising. Based on the scenario given, the advertisement is misleading for the following reasons:
For this finding to be reliable, a sample size of 20 samples is rather small. Although the company was aware that the fertilizer treatment might get rid of weeds in approximately 2 weeks, customers said it would take 4 weeks for all of the weeds to die.
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Which equation below best models the line of best fit for the data?
y=2x+1
y=-2x+1y=−2x+1
y=2x+20y=2x+20
y=-2x-20y=−2x−20
Answer:
y=-2x-20y=−2x−20
Step-by-step explanation:
best models the line of best fit for the data
HELP PLEASE PLEASE PLEASEEEEEEEEE!!!!!
Answer:
x = 70 degrees
Step-by-step explanation:
Answer:
x = 70°
Step-by-step explanation:
Because it is an isosceles triangle, the two base angles are the same (55° and 55°)
All triangles angles must add up to 180°, so 180-55-55 will give us the missing angle (x).
180-55-55 = 70
x = 70°
What number would you add to both sides of x2 + 7x = 9 to complete the square?!...
Answer:
2x
Step-by-step explanation:
x2+7x=9
x+x+2+7=9
2x+9=9
=2
HELLLPPP PLZ!!!!! URGENT!
1. How many 2-digit numbers are multiples of both 5 and 7?
2. How many 2-digit numbers are multiples of either 5 or 7?
thanks!!!!!
Answer and Step-by-step explanation:
1.
First, we need to find what numbers 5 and 7 both go into, and are 2-digits.
5 and 7 go into the numbers 35 and 70.
So, that means the amount of numbers 5 and 7 go into and are 2-digits is Two Numbers.
2.
Now, we have to find the amount of numbers 5 goes into and the amount of numbers 7 goes into, and they need to be 2-digits.
5 goes into the numbers 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, and 95. -- 18 numbers
7 goes into the numbers 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, and 98. -- 13 numbers.
n(A) = 18 n(B) = 13
Now, the set of 2-digit numbers that are multiples of both 5 and 7 is given by
A∩B = {35, 70} ⇒ n(A∩B) = 2
Therefore, the number of 2-digit numbers that are multiples of either 5 or 7 is given by
n(A∪B) = n(A) + n(B) - n(A∪B) = 18 + 13 - 2 = 29
Now, there are 90 2 -digit numbers.
Thus, the number 2-digit numbers are multiples of neither 5 nor 7 is
90 - 29 = 61.
Hence, the total number of numbers is 61.
#teamtrees #PAW (Plant And Water)
PLEASE HELP
G(Ax)) may not be equal to HG(x)).
O A. True
O B. False
Answer:
A. True
・ᗜ・ ¯\_(ツ)_/¯
Solve for s.
Give an exact answer.
63 – 4= 8(2+1/4s)
Answer:
s=5
Step-by-step explanation:
6s-4=8(2+1/4s)
6s-4=16+2s
4s-4=16
4s=20
s=5
Answer:
5
Step-by-step explanation:
6s-4=8x2 + 8x1/4s
6s -4 =16+2s
6s-2s = 16 +4
4s=20
s=5
A recent report indicated that 90 percent of adults in a certain region actively try to include vegetables in their diet. A simulation was conducted that consisted of so trials with a population parameter of 0.9. Each trial consisted of a sample size of 10. The number of successes out of 10 was recorded, where success represented an adult trying to include vegetables in the diet. Five possible simulation results are shown. Which simulation is the best match to the one described? + 0 1 + 3 N + 4 5 6 7 8 9 10 • : 6 0 1 + 2 w+ 4 5 6. + 8 9 7 10 0 10 20 30 40 50 60 70 80 90 100 D 0 10 20 30 40 50 60 70 80 90 100 0 1 2 + +0 다. 4 D+ + ••• 00+ 6 10
The dot plot in option E is correct.
What is sample size?
Choosing the number of observations or replicates to include in a statistical sample is the process of determining sample size. Any empirical study whose objective is to draw conclusions about a population from a sample must take the sample size into consideration.
Finding your sample size in five steps
Clarify the term "population size" or "people"
Specify your error margin.
Decide how confident you are.
Calculate the expected variance.
Decide on the sample size.
As long as it doesn't go over 1,000, 10% of the population serves as a good maximum sample size.
The dot plot in option E is correct.
Because we conduct 50 trials, dot plot should have 50 points, one point per each trial.
On X axis, we take no. of successes out of 10.
Hence it having 0 to 10 numbering.
Hence, the dot plot in option E is correct.
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together Larry and Lenny have $\$$35. Larry has two-fifths of Lenny's amount. How many more dollars than Larry does Lenny have
The answer which we get after calculating from the data given is that Larry has 15 dollars more than Lenny.
Let the amount which Lenny is having be x
then the amount which Larry is having will be (2/5)x
and on combining them it makes $35 .
Which means, x + 2x/5 = 35
On simplifying this equation we will get ,
(7/5)x= 35 ,
multiplying both the sides by 5/7
x= (5/7)*35 = $25
Therefore , Lenny is having 4 25.
So Larry must be having , $(35 - 25) = $10
So , we can conclude that Lenny has more dollars. The difference is of 15 dollars.
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Are isosceles triangles always 180?
No, isosceles triangles are not always 180 degrees. The sum of the interior angles of an isosceles triangle is 180 degrees, but the individual angles can be different.
Isosceles triangles do not necessarily have a 180-degree angle. Any triangle with two equal sides is said to be isosceles. Any triangle's internal angles add up to 180 degrees. An isosceles triangle's individual angles can change depending on how long its sides are, though. An isosceles triangle, for instance, might have a third side that is longer or shorter than the other two sides if the first two sides are equal. The size of the inner angles will be impacted by this. As a result, an isosceles triangle need not have angles that are 180 degrees. An isosceles triangle has interior angles that add up to 180 degrees, but the individual angles might vary.
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combine like terms:
Like terms for the given data are: 17x² and 3x²; -3xy and -2xy. Combining the like terms we get: 20x² and -5xy
What is like terms?In algebra, the term "equal terms" refers to words with the same variable to the same power.
Similar variables and powers are called similar words in algebra. Matching coefficients is not required. When two or more words do not share the same variable or power, they are called inequal terms. The order of both variables is irrelevant unless there is a power. All of these have the same terminology.
17x² and 3x²
-3xy and -2xy
Combine the same terms obtained.
17x² + 3x² = 20x²
-3xy + (-2xy)
= -3xy -2xy
= -5xy
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Select the correct answer.
Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil. Jason decides to
test the land for oil. He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil. What is the probability that the land has NO
oil and the test shows that there is no oil?
OA. 0.09
OB. 0.11
OC. 0.44
OD. 0.36
Answer:
the answer is A. 0.09
Step-by-step explanation:
internet :)
Answer:
C. 044Step-by-step explanation:
Probability of oil:
P(oil) = 45%Probability of no oil:
P(no oil) = 100% - 45% = 55% = 0.55Probability of testing for no oil:
P(test no oil) = 0.55*0.8 = 0.44Correct choice is C
Will mark brainlist if answered right =)
Answer:
Hello! answer: 1/2 and reduction
Step-by-step explanation:
a scale factor of 1/2 was applied because you do 3.4 ÷ 2 = 1.7 so thats 1/2 scale factor and its a reduction because the triangle is getting smaller then the original triangle hope that helps!
I'm not good at this stuff i need help quick pleaseeeeee
Four siblings have a total of 3/4 pound of candy leftover from Halloween. If they split
it equally, how much will each child have?
Answer:
Each child will have 3/16 pound of Halloween candy.
Step-by-step explanation:
To find out how much candy each sibling gets, we need to divide 3/4 by 4
3/4 divided by 1/4 = 3/16
Therefore, our answer is 3/16.