Answer:
b. The fitted regression line is approximately Y = 82.42(runtime)
Step-by-step explanation:
The regression line is Y= aX + b
here b= 82.42 a = -3.31
Hence the regression equation is
Y= 82.42- 3.31 X
where x is the runtime and the slope is given by b.
Option a is correct because from the above equation we see that for every additional minute it takes to run the 1500 m the estimated oxygen consumption rate decreases by 3.31.
Option b is incorrect because the runtime is not given by Y it is given by X.
Option C is correct as
Y= 82.42-3.31*10
Y= 82.42-33.1
Y= 49.32 almost 50
Option d is also correct that the equation line shows a relationship between oxygen consumption and the run time.
Option e is also correct because the slope is given by b and b= 82.42
If the regular price of an item is x dollars, what is the discount price in
dollars?
7.b
The price of the is x dollars is $
Answer:
x/regular price=y
1-y=discountx100
Step-by-step explanation:
Help pls 15 points!!
Answer:
i think its num 4
Step-by-step explanation:
Mr.sol records the daily high temperatures for a week. He creates the box plot below to display his data.
Complete question is attached below :
Answer:
40, 66, 55, 70, 80, 58, 65 - option B
Step-by-step explanation:
From the boxplot attached ;
We could deduce that the least temperature is denoted by the starting point of the whisker, which is 40
The maximum temperature, is the 80, denoted by end of the end whisker.
The median is the value in the middle of the box which is 65
Lower quartile being 55 and upper quartile being 70
Hence, From the options given, the most appropriate answer will be :
40, 66, 55, 70, 80, 58, 65 - option B
IF ARRANGED IN ASCENDING ORDER, we'll have 40, 55, 58, 65, 66, 70, 80
I WILL GIVE BRAINLIEST IF YOU HELP
A museum has an aquarium in the shape of a right rectangular prism that is 22.9 meters long, 7.5 meters wide, and 5.6 meters high. What is the volume, round to the nearest cubic meter, of the aquarium?
A. 280
B. 623
C. 1288
D. 962
Answer:
D. 962
Step-by-step explanation:
The volume of a rectangular prism is the length x width x height.
22.9*7.5*5.6=961.8
961.8 rounds up to 962
What is the unit price for an ounce of coffee if a 120-ounce package costs $9.60?
O $0.08 per ounce
O $0.80 per ounce
O $1.25 per ounce
O $110.40 per ounce
Answer:
0.08
Step-by-step explanation:
Most people complain that they gain weight during the December holidays. To find out how much, we sample the weights of 23 adults in mid-November and again in early to mid-January. The mean weight change for the sample was a gain of 1.64 lbs., with a standard deviation of the differences of 8.73 lbs. Find a 88% confidence level for the average weight gain.
Answer:
The 88% confidence level for the average weight gain if between -1.30 lbs and 4.58 lbs.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 23 - 1 = 22
88% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 22 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.88}{2} = 0.94[/tex]. So we have T = 1.6176
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 1.6176\frac{8.73}{\sqrt{23}} = 2.94[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 1.64 - 2.94 = -1.30 lbs
The upper end of the interval is the sample mean added to M. So it is 1.64 + 2.94 = 4.58 lbs
The 88% confidence level for the average weight gain if between -1.30 lbs and 4.58 lbs.
Answer: CANNOT DO
Step-by-step explanation:
The sample size is less than 30 and it does not specifically state that it is normally distributed, so you cannot compute the answer.
Please helppppppppppppppppppp
Answer:
50 feet
Step-by-step explanation:
Perimeter is the sum of all of the lengths of the sides.
A triangle has three sides, and three lengths are given, therefore all the sides are given.
The sum of the sides is 20 + 20 + 10 = 50
So the Perimeter is 50 feet
Answer:50
Step-by-step explanation:20+20+10=50
Here is a list of numbers:
20, 13, 1, 13, 6, 1,8,20,9,18
State the median.
Answer:
6
Step-by-step explanation:
The median is the middle of the data, or the middle number in a given set of numbers.
The measure of ∠XZY is 55°. Which other
angle has a measure of 55°? Explain
Use the information from Problem 2. Find the
value of n.
Answer:
1) <SZR
2) n=40
Step-by-step explanation:
Sorry I can't explain but I got these answers from the teacher's notes.
Plz help me well mark brainliest if correct....?.?.?.?
What is the value of 0.5–0.05? Write your answer as a fraction in lowest terms.
Answer:
Heyaaa!!! I'm Pinky!! And i'm here to inform you that you're answer is...
Step-by-step explanation:
!!!
0.5–0.05= 0.45
0.45 In fraction form is Simply:
9/20 (And that's on lowest terms!)
If you would want it in percentage form to that would simply be:
45%
Have A Nice Day!!!!
~Pinky~
The value of 0.5–0.05 is a fraction in the lowest terms = 9/20.
Use the concept of fraction defined as:
A fraction is a part of the whole number and a way to split up a number into equal parts. Or, A number which is expressed as a quotient is called a fraction. It can be written as the form of p: q, which is equivalent to p / q.
The given expression is: 0.5–0.05
Subtract 0.05 from 0.05
0 . 5 0
-0. 0 5
0 . 4 5
So, 0.5–0.05 = 0.45
Multiply and divide by 100 we get,
[tex]0.45\times \dfrac{100}{100} = \dfrac{45}{100}[/tex]
Divide both the numerator and denominator by 5 we get,
[tex]\dfrac{45}{100} = \dfrac{9}{20}[/tex]
Hence,
0.5–0.05 in the lowest fraction is 9/20.
Learn more about the fraction visit:
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The hypotenuse of a right triangle is 13 m long. The shorter leg is 7 m shorter than the longer leg. Find the side lengths of the triangle. Length of the shorter leg: m Length of the longer leg: m Length of the hypotenuse: m
Answer: Shorter: 5 m Longer: 12m Hypotenuse: 13 m
Step-by-step explanation:
Write the following inequality in slope-intercept form. 6x+2y≤46
Answer:
y ≤ -3x + 23
Step-by-step explanation:
1. 6x + 2y ≤ 46
•subtract “6x” from both sides to isolate the “y” variable
2. 2y ≤ 46 -6x
•divide both sides by “2”
3. y ≤ 23 -3x
•reorder the terms so it fits the “y = mx + b” slope-intercept format
4. y ≤ -3x + 23
Mark bought a plasma TV for $2,499 on the installment plan. He paid a down payment of $300 and agreed to pay $101.50 a month for the next 24 months.
How much will he pay in all for the TV?
$2,499
$2,635
$2,736
$2,850
write the number that is 100 times greater than 1.86
A piece of wood has the dimensions shown. What is the area of the piece of wood?
21 m
2 m
9 m
10 m
12 m
Help pls
Given the right angle triangle shown here, calculate:
1. a) sin(a)
17
2. a) sin(b)
8
b) cos(a)
b
b) cos(b)
15
c) tan(a)
c) tan(b)
Write trig. ratios for each.
Answer:
see explanation
Step-by-step explanation:
(1)
(a)
sin(a) = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{15}{17}[/tex]
(b)
cos(a) = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{8}{17}[/tex]
(c)
tan(a) = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{15}{8}[/tex]
----------------------------------------------------
(2)
(a)
sin(b) = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{8}{17}[/tex]
(b)
cos(b) = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{15}{17}[/tex]
(c)
tan(b) = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{8}{15}[/tex]
Two functions are shown in the table below.
Function - 1,2,3,4,5,6
f(x) = −x2 + 4x + 12
g(x) = x + 8
Complete the table on your own paper, then select the value that is a solution to f(x) = g(x).
x = 6
x = 3
x = 5
x = 4
Answer:
[tex](d)\ x = 4[/tex]
Step-by-step explanation:
Given
[tex]f(x) = -x^2 + 4x + 12[/tex]
[tex]g(x) = x + 8[/tex]
Required
Find x such that: [tex]f(x) = g(x)[/tex]
This gives:
[tex]-x^2 + 4x + 12 = x+8[/tex]
Collect like terms
[tex]-x^2 + 4x -x + 12 -8=0[/tex]
[tex]-x^2 + 3x +4 =0[/tex]
Expand
[tex]-x^2 + 4x - x+4 =0[/tex]
Factorize
[tex]x(x - 4) - 1(x-4) = 0[/tex]
Factor out x - 1
[tex](x- 1)(x - 4)=0[/tex]
Solve:
[tex]x =1\ or\ x = 4[/tex]
Emily earns $15 for each car she washes. Create an equation to represent the relationship between the number of cars washed, C, and the amount, in dollars, Emily earns, m.
Answer:
An equation is c = 15m
Step-by-step explanation:
Which of the following pairs of triangles can be proven similar through SSS similarity?
Answer:
d
Step-by-step explanation:
The ΔDGF and ΔABC can be proven similar through SSS similarity. Therefore, option D is the correct answer.
We need to find which of the given pairs of triangles can be proven similar through SSS similarity.
What is SSS similarity?If all the three sides of a triangle are in proportion to the three sides of another triangle, then the two triangles are similar.
Now, form option D.
DF/AB=DG/AC=FG/BC
⇒8/2=10/2.5=11/2.75
⇒4=4=4
Thus, ΔDGF and ΔABC are similar.
Therefore, option D is the correct answer.
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a triangle has an area of 72 unites squared the base is 4 units tall how tall is the height
Answer:
h = 36 units
Step-by-step explanation:
A = 1/2bh
72=1/2(4)h
72=2h
h=36 units
HELP HELP HELP I NEED HELP
Answer:
b
Step-by-step explanation:
cause it a circle and it will need a little more then the number it is
Soren's favorite cereal is on sale. A 20-ounce box costs $4.59. A smaller, 12-ounce box costs $2.52. Complete the statements to describe which box costs less per ounce.
Answer:
The smaller box, 12 oz, costs less per oz than the larger 20 oz box.
Step-by-step explanation:
$4.59 divided by 20 = $0.2295 per oz
$2.52 divided by 12 = $0.21 per oz
can someone help me on this please
Answer:
from top to bottom: 12, 17, 90
Step-by-step explanation:
the total for the first row is 45, and 2 of the numbers are 23 and 10. so, what you do is add 23 and 10 to get 33. Then you just subtract 33 from 45 to get 12.
Same with the other one. the total is 40 so you just subtract 23 from 40 to get 17.
The last one you add the numbers up. So 40+17+33 is 90.
pls mark brainliest (it is the crown)
Answer:
Sophomores in Art: 17
Freshmen in Drama: 12
Total Total: 90
Step-by-step explanation:
Total Kids in art: 40
Freshmen in art: 23
that leaves 17
Total kids in Drama: 33
Sophomores in Drama: 21
that leaves 12
Total sophomores in total: 45
Total freshmen in total: 45
That adds up to 90
3+6+2=61
2+8+3=31
4+7+4=42
5+6+4=62
8+7+4=?????
Answer:
6mm AR, a 6 mm wildcat version which shares 6.5 Grendel's casing, but sends a (usually) lighter projectile up to 1,000 yards (900 m). 6.5×42mm, also known as 6.5 MPC (Multi Purpose Cartridge), based on a necked up .223 Remington case.
Step-by-step explanation:
Answer: 19
Step-by-step explanation:
8+7+4
8+7=15
15+4=19
This question has had me confused for about an hour, please help
help with 6grade math
Please help me ! Is it 1 or 3
Answer:
its 3
Step-by-step explanation:
Answer:
not Shure but I think it is 1
Calculator
What is the value of n?
Enter your answer in the box.
Answer:
168
Step-by-step explanation:
168+8+4=180
1) The lines A and B are parallel. Identify a pair of corresponding angles?
A) ∠ 1 and ∠ 6
B) ∠ 3 and ∠ 8
C) ∠ 6 and ∠ 5
D) ∠ 5 and ∠7
2) If 25 measures 110°, what is the measure of ∠ 2?
-0)
A) 55°
B) 70°
C) 110°
D) 160°