Answer:
Elena won the race.
Step-by-step explanation:
If you calculate it, Lin runs a mile every 9 minutes.
9 times 7.5= 67.5 which is 1 hour, 7 minutes and 30 seconds. While it took only an hour for Elena to run 7.5 miles.
Which means Elena's speed was faster and got her to the finish line first.
Valen recorded the number of siblings (brothers and sisters) each of his classmates has in the dot plot below.
Which of the following would be the best measure of center?
A.
mean absolute deviation
B.
mean
C.
median
D.
interquartile range
Answer:
it is c
Step-by-step explanation:
im is smart
To measure the center, median is the best method.
What is median?The value that divides the mathematical numbers or expressions in half is known as the median. The middle data point is known as the median value.
To find the median:
First, organize the data points in ascending order before calculating the median.
The middle number on the list is the median if the number of observations is odd.
Take the value of the (n+1)/2-th term, where n is the total number of observations, to determine this.
Otherwise, the median is the simple average of the middle two figures if the number of observations is even.
Therefore, the median is the best method to find the measure of the center.
To learn more about the median;
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Can some one help I am stumped?
Please look at both images.
Answer: The first question is the first option and the second one is is explained below:
Step-by-step explanation:#2
When you are doing Dilation, You have to rotate the paper or whatever
about 3 times so and then make your mark as needed.
Help Me!!!!!!!
Select the correct answer. Which relationship does the graph represent?
A.
perimeter of a square × 4 = length of its sides
B.
perimeter of a square + 4 = length of its sides
C.
perimeter of a square = 4 + 4 × length of its sides
D.
perimeter of a square = 4 × length of its sides
E.
perimeter of a square × 4 = 4 + length of its sides
Answer:
C
Step-by-step explanation:
Its because it goes + 4, 8, 12, 16, etc. And 4 x the length of its sides 4x1, 4x2, 4x3, 4x4.
Hope this helps!
Find the equation of the line.
Use exact numbers.
Answer:
y = 3x + 3
Step-by-step explanation:
Slope = (y2 - y1) ÷ (x2 - x1)
y-intercept = (0,y)
James is tracking the changes in barometric pressure (measured in inches of mercury – inHg) for his science class. On Monday the pressure was 30.01inHg. The pressure dropped by 0.34 inHg on Tuesday, before climbing 1.32 inHg on Wednesday. What was the barometric pressure reading for Wednesday?
Answer:
30.99 inHg.
Step-by-step explanation:
First, subtract how much the pressure dropped on Tuesday from Monday's reading. 30.01 inHg - 0.34 inHg = 29.67 inHg
Then, add how much the pressure climbed on Wednesday to Tuesday's reading. 29.67 inHg + 1.32 inHg = 30.99 inHg
Answer:
The barometric pressure reading for Wednesday was 31.01inHg. This can be calculated by subtracting 0.34inHg from the pressure reading on Monday (30.01inHg) and then adding 1.32inHg, which results in 31.01inHg.
Evaluate.
12 2/3+(9 6/8 − 3 1/4)
Enter your answer as a mixed number in simplest form by filling in the boxes.
Answer:
It is 19.7, Simplified
Step-by-step explanation:
For more, add the "Boxes" because, I don't know what you mean by "the boxes"
Apply the Distributive Property to solve the equation below. What operation will you need to use first? What operation would you need to use last?
6 (t+12) =114
Answer:
See below.
Step-by-step explanation:
6(t+12)=144
6t+72=144
-72 -72
6t=72
/6 /6
t=12
So, multiplication is the first operation used, and division is the last.
-hope it helps
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is in place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Create a proportion using the form %/100 = is/of to represent the following word problem.
What is 60% of 20?
Answer:
60% of 20 is 12
Step-by-step explanation:
60 / 100 * 20 = 12
A coffee shop surveyed three groups of 5 customers to find out how many cups of coffee the customers drink in one day. This table shows the results of the three samples.
Survey Cups of Coffee
Group 1 {1, 3, 2, 2, 4}
Group 2 {4, 1, 3, 2, 1}
Group 3 {5, 4, 6, 4, 6}
Identify any surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of cups of coffee the customers drink in one day.
Enter your answer in the box. Round to the nearest whole number.
cups
Answer:
The mean number of cups of coffer per person was 3.2 cups.
There is nothing in the problem that leads me to believe that the surveys were biased (Was there more to this problem?).
Therefore, we will use all of the values to find the mean. Add up all the values and we have a total sum of 48. Now, divide by 15 to get a mean on 3.2.
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
The person above is wrong
PLEASE HELP!! (GIVING BRAINLIEST TO FIRST CORRECT ANSWER
explain how you do it!!
7th grade math help pls i've had to redo this question 3 times cause my teacher.
Answer:
neon: 0 percent change oxide: -2 percent change copper: 2 percent change tin: 0 percent change
Step-by-step explanation:
Neon: -10+10=0
Oxide: -10+8=-2
Copper: -27+29=2
Tin: -50+50=0
Hope this helps
Find the value of each variable.
d⋅88= −88,000
Answer:
d = -1000
Step-by-step explanation:
-88,000/88 = -1000
-1000 ⋅ 88= −88,000
Answer:
d = −1,000
Step-by-step explanation:
d*88= −88,000
88d = −88,000
/88 /88
d = −1,000
Hope this helps!
please help me !!!!!!!!!!!!!!!!!!
Answer:A TRUE B FALSE C FALSE
Step-by-step explanation:
Do what it says on the picture
Answer:
D - 8
Step-by-step explanation:
V= 4/3 x pie x radius to the 3rd power
V = 4/3 x 3.14 x 1.25 to the 3rd power
V = 4/3 x 3.14 x 1.953125
V = 4.18666666667 x 1.953125
V = 8.17708333333
Rounded is 8
Can anyone PLEASE help me with this??
Answer:
A'' (-1,5)
B'' (0,1)
C'' (-3,-1)
Step-by-step explanation:
For A,
Step 1, (2,2) change to (-2,2), cuz if reflect in y-axis, positive value of x will change to negative value of x, negative value of x will change to positive value of x.
Step 2, (-2,2) change to (-1,5), cuz we add up the 1 to x-value, add up 3 to y value.
For B,
Step 1,
(1,-2) to (-1,-2)
Step 2,
(-1,-2) to (0,1)
For C,
Step 1,
(4,-4) to (-4,-4)
Step 2,
(-4,-4) to (-3,-1)
PLease HELP MEEEEE WITH THIS PROMLEM
Answer:
The conclusion is not correct
Step-by-step explanation:
At first it might seem as though the conclusion is correct, seeing as the table has the correct input and is done correctly, but it is the wording of the second sentence next to the table. The question says "you ask 100 randomly chosen high school students..." , Yet the second sentence says "You conclude that 15% of Residents in your town..." Therefore, they aren't relevant to the graph which means the conclusion is wrong
Below are the hours each of three stores are open for business.
Which of the stores were open for 9 hours and 45 minutes? (TESTING QUESTION)
Gift Shop 8:45 AM – 6:30 PM
Grocery Store 8:00 AM – 5:45 PM
Hardware Store 7:30 AM – 6:15 PM
Answer:
Grocery store is the correct one ...
brainleaist please
Answer:
Yes it is grocery store.
Step-by-step explanation:
Write the absolute value equations in the form |x-b|=c (where b is a number and c can be either a number or an expression) that has the following solution set
all numbers such that x ≤ 5
all numbers such that x ≥ -1.3
Answer:
x - 5 ≤ 0, x + 13 ≥ 0
Step-by-step explanation:
All numbers such that x≤5.
x - 5 ≤ 0
All numbers such that x≥−1.3.
x + 13 ≥ 0
The absolute value equations in the form of |x-b|= c(where b is a number and c can be either a number or an expression) that has the following solution set
all numbers such that x ≤ 5 and all numbers such that x ≥ -1.3 will be x -5 ≤ 0 and x + 1.3 ≥ 0.
What is the absolute value equation?Isolate the absolute number on one side of the equation to solve an equation containing the absolute value.
Then, resolve both equations by changing their respective contents to the positive and negative values of the variable on the other side of the equation.
In another word, the absolute value equation is the equation that has a real absolute value not imaginary and not binary.
In the mode function, it could be two values if the mode is going negative or positive.
Given that the equation |x-b| = c and constraint is
all numbers such that x ≤ 5
all numbers such that x ≥ -1.3
so by substituting we will get x -5 ≤ 0 and x + 1.3 ≥ 0.
For more information about the absolute value equation
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HELP! Read the comments.
5w–10>20 ; with the given set → {5,6,7,8}
its for an assignment
Answer:
w = 7, and w = 8 is correct
Step-by-step explanation:
1. Why 5 does not work
a. Substitute 5 into the equation
5w-10>20 --> 5(5) - 10 > 20
b. Solve the equation
Remember Pemdas:
P- Parentheses First
E- Exponents Second
M- Multiplication Third
D- Division Fourth
A- Addition Fifth
S- Subtraction Sixth
We are not working with Exponents and Parentheses, but we are working with the rest.
Since there is no P and E, that means that multiplication is first
5(5)-10>20 - 5(5) = 5 x 5 = 25
Now all is left is to subtract:
25 - 10 = 15
15 > 20 Is not true.
2. Why 6 does not work
a. Substitute
5w-10>20 --> 5(6) - 10 > 20
b. Solve
5(6) = 5 x 6 = 30
30 - 10= 20
20 > 20 is not true
Just like you are not greater than yourself, 20 can not be greater than its own self.
3. Why 7 and 8 work (7a, 7b is 7; 8a, 8b is 8)
7a. Substitute
5w-10>20 --> 5(7) - 10 > 20
8a. Substitute
5w - 10 >20 --> 5(8) - 10 > 20
7b. Multiply and subtract
5(7) = 5 x 7 = 35
35 - 10 = 25
25 > 20
25 is greater than 20
8b. Multiply
5(8) = 5 x 8 = 40
40 - 10 = 30
30 > 20
30 is greater than 20
Hereby, w = 7, and w = 8
Hope this helps
-jp524
What are the measures of Angles a, b, and c? Show your work and explain your answers.
Answer:
a= 40, b= 50, c= 115
Step-by-step explanation:
a-
There is a theorem for a that gives you the answer:
Vertical angles are congruent
If the vertical angle of a is 40°, then a is also 40°.
That is what the theorem says.
b-
This one is kind of difficult, but let me break down the steps.
Now you already know that a is 40°, and the other angle besides b is a right angle because it shows a square, or 90°.
And now you need to know another law:
Every single triangle's angle adds up to 180°.
Now, this is basically a subtraction problem.
If two of the angles are there, and you know that all of the angles of a triangle add up to 180°, then you just need to know what 90 + 40 + x = 180 is
90 + 40 = 130
130 + x = 180
Subtract 130 from both sides
130 + x = 180
-130 -130
x=50, which means that all of the angles add up to 180°, or following the law.
c-
This one is different as well.
You can very clearly see that it is a straight line that crosses 65° and c.
There is one more law as well:
A straight line is 180°.
If that line that 65 degrees and c sits on is straight, that means that-
65 + x = 180, or
180 - 65 = x
180-65 = 115, and c=115.
It also follows that law; 115 + 65 = 180, which means that it is correct.
Hope this helps :)
-jp524
Metric Units of Length, Mass, and Capacity (PLEASE HELP)
help??
The figure shown is composed of three identical rectangular prisms and a cube.
Find the surface area.
Answer:
282
Step-by-step explanation:
282
The volume of a right cone is 3975pi units^3. f its radius measures 15 units, find its height.
Answer:
53
Step-by-step explanation:
right cone equation: [tex]V=\pi r^{2} \frac{h}{3}[/tex] where V is volume, r is radius, and h is height.
Graph the equation (please hurry)
Answer:
I would start at ( -2, -0) and make a line
Step-by-step explanation:
How do we use fractions that equal 1 to create equivalent fractions?
Do you think that we should always express fractions in the lowest terms? (9/12 = ¾)
Answer:
no
Step-by-step explanation:
The reason is if you have to add 3/4 + 7/12 you would have to convert it to have the same denominator for both fractions.
Hope this Helps!
HELP ALOT of Points (50 Points) GIVING BRANILIEST
Answer:
its very easy dude like come on this is like 4rth grade stuff
Answer:
Part A = 20 Students
Part B = 6 Students
Part C = 2/9x I believe
Part D = 4 and 2/3 or 4 Students because you can't have 2/3 of a student.
Step-by-step explanation:
Use the Distributive Property to solve the equation.
3/4 (12a + 8) = 31.2
CHECK THE PHOTO BELOW!!
Answer:
a=2.8
Step-by-step explanation:
Answer:
(3/4 * 12a) + (3/4 * 8) = 31.2
a = 2.8
Step-by-step explanation:
[tex](\frac{3}{4}*-)+(-*8)=-[/tex]
[tex]\frac{3}{4} (12a + 8) = 31.2\\\\\frac{3}{4} (12a)+\frac{3}{4} (8)=31.2\\\\9a+6=31.2\\\\\ \ \ -6 \ \ \ \ \ \ \ \ -6\\\\9a = 25.2\\\\/9 \ \ \ \ \ /9\\\\a=2.8[/tex]
Answer:
(3/4 * 12a) + (3/4 * 8) = 31.2
a = 2.8
Hope this helps!
i need help with this pls
Answer:
1). y = -3 - 7
2). 1/4
3). 1. 117° 2. 63°
4). There are 42 students in the yearbook club and 61 in the drama club
5). 1). both are 45 ° 2). both are 3 units
Step-by-step explanation:
need some help with this!
Answer:
The symbol ∼ is used to indicate similarity.
Step-by-step explanation:
QUICK, I NEED HELP!!
Calculate the simple interest to the nearest cent.
$283 at 4.9% for 8 years.
$___