I have a few questions!
a) x−1.27=4.09
b) 2.3−y=2.301
c) t+3.04=14.3
d) 1.1+k=5.67
Answer:
a.) x = 5.36
b.) y = - 0.001
c.) t = 11.26
d.) k = 4.57
Step-by-step explanation:
a) x−1.27=4.09
b) 2.3−y=2.301
c) t+3.04=14.3
d) 1.1+k=5.67
Solving. right?
a.) x = 4.09 + 1.27 = 5.36
b.) y = 2.3 - 2.301 = - 0.001
c.) t = 14.3 - 3.04 = 11.26
d.) k = 5.67 - 1.1 = 4.57
4x + 3y = 6
-4x + 2y = 14
Answer:
x= −3/2 y=4
Step-by-step explanation:
Find the slope
(-8, 18) and (-14, -3)
Answer:
[tex]m=\frac{7}{2}[/tex]
Step-by-step explanation:
Step 1: Find the slope
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m = \frac{-3 - (18)}{-14-(-8)}[/tex]
[tex]m = \frac{-21}{-6}[/tex]
[tex]m=\frac{7}{2}[/tex]
Answer: [tex]m=\frac{7}{2}[/tex]
Simplify.
-6+[4-(x-2)]
Answer:
-x
Step-by-step explanation:
-6+[4-(x-2)]
Distribute the minus sign
-6+[4-x+2]
Combine like terms
-6+4 +2 -x
-x +0
-x
Which is a Linear Equation?
A. Y=3-2x
B. Y= -7x^2
C. Y=2-3x^2
D. Y=-7×^3
Answer:
(A)
Step-by-step explanation:
A linear equation can be written in slope intercept form, [tex]y=mx+b[/tex].
X must be in it's first power in a linear equation. X being in any other power will result in a curved line.
This eliminates B, C and D already. X is not in it's first power in the given three options.
The best option is A.
What is the mean absolute deviation of the data: 10, 20, 15, 17, and 13?
Answer:
2.8
Step-by-step explanation:
1) find the mean of the data set. = 15
2) find the abs value of the diff between each data value and the mean: |data value – mean|.
|10-15|=5, |20-15|=5, |15-15|=0, |17-15|=2, |13-15|=2
3) find the sum of the abs values of the diff = 14
4) divide the sum of the abs value by the number of data values = 14/5 = 2.8
Just Checking
2. A consumer watchdog organization received customer complaints about
the performance of one brand of batteries. To investigate, the researchers
purchased 24 of these batteries and ran them until they died. This sample
lasted a mean of 47 hours with a standard deviation of 3 hours.
a) What assumption must we make about battery life in order to use a t
model?
b) Find a 95% confidence interval for the mean lifespan of this brand of
batteries.
c) Write a conclusion based on your confidence interval.
HELP! WILL MARK BRAINLIEST!!!!! QUESTION IN THE PHOTO
Answer:
Step-by-step explanatio
Exterior angles of a triangle...help?
Answer:
Angle 4 is the exterior angle
Step-by-step explanation:
Exterior mean "outside"
Angle 4 is the only angle outside of the triangle
HELP PLS
What is the approximate distance from Denver to Chicago? Use proportional relationships to solve the problem. Show your work.
Answer:
About 1000 miles
Step-by-step explanation:
Which of the given points would be in a table generated by the equation below?
pm + gy = 5
А. (0, 9)
B. (0, й)
C. , о)
D. (2 , 0)
Please help it’s for my brother!!
Answer:
the answers B
Step-by-step explanation:
i got B
The sum of the present ages of a father and his son is 80 years. When the
father's age was equal to the present age of the son, the sum of their ages
would be 40 years. Find their present ages.
Answer:
Father=60
Son=20
Step-by-step explanation:
Let the father's age be x
Let the son age be y
Present age of them
X+y=80...(1)
Since the father's age equals to the present age of the son
Y+y=40
2y=40....(2)
Make y the subject of formula by dividing both sides by 2
Y=20
Substitute the value for x into (1)
20+x=80
Substrate 20 from both sides
X=60
Therefore the father's age is 60 and the son's age is 20
6. In the year of 2017, the highest number of ambulance calls in a month was 8,312. The
lowest number of ambulance calls in a month was 791 times. The difference between the
highest and lowest use in a month is about ______ calls.
a. 7,300 b. 7,500 c. 7,800
Answer: The answer would be (b), or 7,500
Step-by-step explanation:
Stack the numbers and have 8,312 on top of 791Subtract You get the answer 7,521Round to the nearest hundred by looking at the tens place, anything below 5 will round it down to 500 and anything 5 or more will round it up to 600You end up with 7,500 as your rounded answer (about is a clue word to let you know you need to round)A math teacher who likes baseball conducts a survey of 100 students. He asked the students about their favorite sport and about their favorite subjects in order to determine the number of students who like math or baseball. The two way table below shows part of the results of the survey. Enter the percentage of students in the survey who’s favorite subject is math or who’s favorite sport is baseball.
[this is written response, so there are no answer choices]
Answer:
46%
Step-by-step explanation:
see image attached!
A bag contains 5 red, 4 green, and 3 blue marbles. What is the probability of randomly picking a green marble, replacing it, and then randomly picking a blue marble?
Final answer:
The probability of first picking a green marble, replacing it, and then picking a blue marble from a bag containing 5 red, 4 green, and 3 blue marbles is 1/12.
Explanation:
The question is about calculating the probability of selecting a green marble and then a blue marble from a bag with a replacement in between the picks. The process involves two independent events since the green marble is replaced before picking the blue marble.
To calculate the probability of picking a green marble first, we consider the total number of marbles and the number of green marbles. Given there are 5 red, 4 green, and 3 blue marbles, the total number of marbles is 5+4+3=12. The probability of picking a green marble is thus 4/12 or 1/3. Because we replace the green marble, the bag's contents remain the same for the second pick.
The probability of picking a blue marble after replacing the green marble is therefore based on the same total of 12 marbles. The probability is 3/12 or 1/4. Now, since these are independent events, we multiply the two probabilities together to get the overall probability of both events happening in sequence: (1/3) * (1/4) = 1/12.
In summary, the probability of first picking a green marble, replacing it, and then picking a blue marble is 1/12.
Final answer:
The probability of randomly picking a green marble, replacing it, and then randomly picking a blue marble is 1/12.
Explanation:
To find the probability of randomly picking a green marble, replacing it, and then randomly picking a blue marble, we need to first calculate the individual probabilities.
The bag initially contains 5 red, 4 green, and 3 blue marbles. The probability of picking a green marble is 4/12, since there are 4 green marbles out of a total of 12 marbles.
Since the first marble is replaced, the bag still contains the same number of green marbles, so the probability of picking a blue marble on the second draw is also 3/12, since there are 3 blue marbles left out of 12 marbles.
To find the probability of both events happening, we multiply the individual probabilities: (4/12) * (3/12) = 1/12.
What's the ratio in simplest form 20/60
Answer: 1/3 is the simplest form.
Step-by-step explanation:
All I did was see if 60 could be divided into 20, and it can.
60 divided by 20 = 3
Now I have to do the same with the 20.
20 divided by 20 = 1
Now I have 1/3.
Thats how I solved it.
Hope that helps!
PLEASE HELP NEED ASAP
Answer:
Side WZ=9
Step-by-step explanation:
Since he two are similar you need to make a ratio of the two parallelograms
The first tells you side FE is 2 and side EH is 3 so write it like this 2/3.
Next you need to do the same thing with the second parallelogram, so you know side XW is 6 but you don't know side WZ so you'd write this one 6/x.
You can do this since FE is similar to XW, because it is the same shape just bigger.
Next you take the two fractions adn set them equal to each other.
2 6
_ = _
3 x
Now cross multiply (2 timesx and 6 times 3)
It should look like this now
2x=18
Now all you have to do is divide by 2.
If you horizontally stretch the quadratic parent function, f(x) = x², by a factor
of 3, what is the equation of the new function?
O A. g(x) = x2
O B. g(x) = (3852
O C. g(x) = (3x)2
o D. g(x) = 3x²
Answer:
d
Explanation:
You multiply the X by 3
In the diagram, m angle SUR =32 degrees. Find mRS and m angle STR.
Because SUR=32, then RS must be 32 and because STR=64. You could also tell this because the shape in the circle is not perfectly symmetrical
Solve for h
35=1/2h (5+2)
Answer:
10
Step-by-step explanation:
35= 1/2h(7)
1/2 of 7 is 3.5
3.5(10)=35
h=10
Answer:
Solve for h
35=1/2h (5+2)
Multiply (5+2) by 1 divided by 2, then we have
7/2h= 35
cross multiply
35 x 2h= 7
70h= 7
divide both sides by 70
h= 7/70
h= 1/10
Step-by-step explanation:
The radius of a circle is 2 miles. What is the diameter?
2 mi
Give the exact answer in simplest form.
Answer:
S
Step-by-step explanation:
Answer:
4 Miles
Step-by-step explanation:
D=r2
Hi i need help with this math problem(IN the picture)
Answer:
138
Step-by-step explanation:
Because they are same-side interior angles, their sum is 180. You set up an equation and get:
180 = 42 + x
Which simplifies to
138 = x
Which set of ordered pairs does NOT represent y as a function of x?
Question 5 options:
{(1, 1), (2, 1), (3, 1)}
{(1, 1), (2, 2), (2, 3)}
{(1, 2), (2, 3), (3, 3)}
{(1, 2), (1, 3), (1, 1)}
Answer:
the 3rd choice
Step-by-step explanation:
Answer:
The last one {(1, 2), (1, 3), (1, 1)}
Step-by-step explanation:
This is because the domain x is repeated. For a set of ordered pairs to be a function the domain can not repeat.
how does total revenue differ from marginal revenue
Liz flips a coin 50 times. The coin lands heads up 20 times and tails up 30 times. Complete each statement. The theoretical probability of the coin landing heads up is ______. Based on Liz’s results, the experimental probability of the coin landing heads up is_____. The theoretical probability is than the experimental probability in this experiment________.
Answer:
50% or 50/100 or 25/50 40% or 40/100 or 20/40MoreStep-by-step explanation:
The theoretical probability is more than the experimental probability in this experiment
What is Probability?The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible
Probability = number of desirable outcomes / total number of possible outcomes
The value of probability lies between 0 and 1
Given data ,
Let the number of times the coin is flipped be n = 50
And , the number of times the heads is shown = 20 times
The number of times the tails is shown = 30 times
The theoretical probability of a coin being head or tail P ( A ) = 50 %
So , the experimental probability of being a head is P ( B ) = 20/50
P ( B ) = 40/100 = 40 %
Therefore , P ( A ) > P ( B )
Hence , theoretical probability is more
To learn more about probability click :
https://brainly.com/question/17089724
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2.75 cups of water mixed with 3.5 cups of pancake mix will make 19 pancakes. How much water is needed if there is only 1.5 cups of pancake mix left?
Answer:
You would need .75 cups of water (or 3/4 cups) if there is only 1.5 cups of pancake mix left
Step-by-step explanation:
So the ratio of water to pancake mix is 2.75 : 3.5 (which makes 19 pancakes)
To get from 3.5 cups of pancake mix to 1.5 cups of pancake mix you would subtract 2 cups. Since this is a ratio, you would not only subtract 2 cups from the pancake mix, but also from the water. 2.75 - 2 = .75 Therefore, you would need .75 cups of water (or 3/4 cups) if there is only 1.5 cups of pancake mix left. Hope this helps!
Answer:
1 5/28 cups of water
Step-by-step explanation:
Water : pancake mix
2.75 : 3.5
X : 1.5
2.75/X = 3.5/1.5
X = 2.75 × 1.5/3.5
X = 33/28 or 1 5/28 cups
Which interval shows the greatest number of students?
Based on the histogram, an interval that shows the greatest number of students is: A. 0 - 1.99.
What is a histogram?In Mathematics and Statistics, a histogram refers to a type of graph that is used for the graphical representation of a data set into user-specified ranges, especially through the use of rectangular bars.
Based on the information provided in the histogram, a frequency table can be that models the data set can be completed as follows;
Class interval (hours) Number of students
0 - 1.99 7
2 - 3.99 6
4 - 5.99 3
6 - 7.99 4
8 - 9.99 1
By critically observing the frequency table above, we can logically deduce that the class interval with the highest frequency is 0 - 1.99 with a value of 7.
In conclusion, 7 students study between 0 and 2 hours per week.
Complete Question:
A survey of sixth-grader students recorded how many hours students studied each week. The histogram below displays the collected information.
Which interval shows the greatest number of students?
0 - 1.99
2 - 3.99
4 - 5.99
6 - 7.99
In 3 years, a gyms membership went up from 6,400 to 8,400. Which expression shows how to find the percent of increase (A) 2,000/8,400 (B) 2,000:6,400 (C) 6,400/2,000
Answer:
B. 2000/6400
Step-by-step explanation:
Percent increase is told by the attached formula.
Plugging it in, you get 2000/6400.
x^2-5x-36/x-2 ÷(x^2-18x+81)