Answer:
A regular polygon have 18 sides.
3. Maria is a veterinarian. She wants to know how the weight of a puppy is related to its length. To find out, Maria randomly selected 10 puppies that are two months old. She recorded the length and weight of each puppy in the table below. Part A. The data from the table are shown on the scatterplot. Draw an estimated line of best fit through the data points. (3 points) Part B. Use the scatterplot to answer these questions. a. What kind of correlation exists between the length and weight of the puppies? Explain. (2 points) b. Identify two points on the line of best fit that you drew in Part A. Use the two points to find the equation of the line. Write the equation of the best fit line in slope-intercept form. Show your work. (4 points: 1 point for identifying the coordinates of two points, 1 point for slope, 1 point for b-value, and 1 point for showing work)
Answer:
Part A. I chose points (7,1.3) and (48,9.8)
Part B. a. Positive correlation; b. y = 0.21x - 0.2
Step-by-step explanation:
Part A.
I chose the first and last points on the line — (7 in, 1.3 lb) and (48 in, 9.8 lb).
That put three points on the line, three above it, and four below.
Part B
a. Type of correlation
There is a positive correlation between the length of a puppy and its weight.
You would expect a longer dog to be bigger and weigh more than a shorter dog.
b. The equation for the line of best fit
The slope-intercept equation for a straight line is
y = mx + b
where m is the slope of the line and b is the y-intercept.
The line passes through the points (7,1.3) and (48, 9.8).
(i) Calculate the slope of the line
\begin{array}{rcl}
[tex]m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = & \dfrac{9.8 - 1.3}{48-9}\\\\& = & \dfrac{8.5}{41}\\\\& = & \textbf{0.21 lb/in}\\\\\end{array}[/tex]
The slope of the line is 0.21 lb/in.
(ii) Locate the y-intercept
Put the slope and the coordinates of one point into the slope-intercept formula.
[tex]\begin{array}{rcl}y & = & mx + b\\1.3 & = & 0.21\times7 + b\\1.3 & = & 1.47 + b\\b & = & -0.2\\\end{array}[/tex]
The y-intercept is at (0,-0.2)
(iii) Write the equation for the line
y = 0.21x - 0.2
The base of a triangle exceeds the night by 7 yards. If the area is 60 squares yards. Find the length of the base and the height of the triangle
Answer:
Height = 8 yards, base = 15 yards.
Step-by-step explanation:
Let the height be x yards then the base = x+7 yards.
Area = 1/2 * base * height, so:
1/2 * (x+7) * x = 60
1/2x(x + 7) = 60 Multiply through by 2:
x(x + 7) = 120
x^2 + 7x - 120 = 0
(x - 8)(x +15) = 0
x = 8, -15
x = 8. ( we ignore the negative root).
So the base is 8+7 = 15 yards long.
I NEED HELP PLEASE, THANKS! :)
Answer:
θ = {0, π/2, π, 3π/2, 2π} . . . . choice B
Step-by-step explanation:
In this equation, r will be a maximum where cos(4θ) is a maximum. That is where ...
4θ = 2kπ . . . . for some integer k
Dividing by 4 gives ...
θ = k(π/2)
θ = {0, π/2, π, 3π/2, 2π} . . . . matches choice B
__
You will note that the graph also has extremes at odd multiples of π/4. These are the locations where cosine is a minimum and r is negative. It can be argued that r is not a maximum at those points.
if x degree and 50 degree are co interior angles find the value of x degree
Answer:
x+50degree =180 (sum of co- interior angle)
x=180-50degree
x=130answer
Find the value of x. Give reasons to justify your solution. AB ∥ EC
Answer:
27°
Step-by-step explanation:
Let line AB be extended to touch line DC at point F, thereby forming triangle BCF.
∠ABC + ∠BCE = 180° (sum of interior angles in a transversal).
∠ABC + 48 = 180
∠ABC = 180 - 48 = 132°
Also in triangle ADF, ∠ADF + ∠DFA + ∠FAD = 180 (sum of angle in a straight line)
85 + ∠DFA + 25 = 180
∠DFA + 110 = 180
∠DFA = 180 - 110 = 70
∠DFA = 70
∠DFA + ∠BFC = 180° (sum of angle on a straight line)
∠BFC + 70 = 180
∠BFC = 180-70 = 110
∠BFC = 110°
∠ABC + ∠CBF = 180° (sum of angle on a straight line)
132 + ∠CBF = 180
∠CBF = 1800 - 132 = 42
∠CBF = 42°
In triangle BCF:
∠BFC + ∠CBF + x = 180° (sum of angle in a triangle)
42 + 110 + x = 180
x + 152 = 180
x = 180 - 152
x = 27°
Answer:
22 Degrees
Step-by-step explanation:
First, i extended the line AB, to make a triangle and then i found out that the angle is 70 degrees, and from that i got that the other angle is 110 degrees, so now i know that the triangle (that has X in it) is this formula:
110+48+X=180
so now 180-158=22, so that is the answer
Five-thirds divided by one-third Step 1: Show the dividend Five-thirds in a fraction bar. Step 2: Below the dividend, show the divisor One-third in a fraction bar. Step 3: Find how many One-third seconds fit in Five-thirds seconds Step 3: Five-thirds divided by one-third =
Answer: the answer 5
Step-by-step explanation: it is 5
Answer:
its 5
Step-by-step explanation:
I need help urgent plz someone help me solved this problem! Can someone plz help I’m giving you 10 points! I need help plz help me! Will mark you as brainiest!
Answer:
Step-by-step explanation:
t=V100-50/4
t=V50/4=1.76≈1.8 s
when h=0
t=V100/4=10/4=2.5 s
Answer: a) (5√2)/4 ≈ 1.77 seconds
b) 5/2 = 2.5 seconds
Step-by-step explanation:
[tex]t=\dfrac{\sqrt{100-h}}{4}\\\\\\h=50\rightarrow t=\dfrac{\sqrt{100-50}}{4}\\\\\\.\qquad \qquad =\dfrac{\sqrt{50}}{4}\\\\\\.\qquad \qquad =\large\boxed{\dfrac{5\sqrt2}{4}}\\\\\\\\h=0\rightarrow t=\dfrac{\sqrt{100-0}}{4}\\\\\\.\qquad \qquad =\dfrac{\sqrt{100}}{4}\\\\\\.\qquad \qquad =\dfrac{{10}}{4}\\\\\\.\qquad \qquad =\large\boxed{\dfrac{5}{2}}[/tex]
Identify the range of the function shown in the graph.
Answer:
B
Step-by-step explanation:
The range is all values of y. Y goes from -1 to 1. Please mark brainliest.
Answer:
see below
Step-by-step explanation:
The domain of the function is the possible x values
The domain is all real values since x can be any number
The range of the function is the possible y value
The values of y go from -1 to 1 so
-1 ≤y≤1
There are two species of plants that live along the ridge line of Old Rag, which is a mountain here in Virginia. The probability of observing the first species is 0.61, while the probability of observing the second species is 0.08. The probability of observing them growing together (i.e. right next to one another) is 0.28. When you go for a hike along this ridge line, what is the probability of observing one species or the other but not both together
Answer:
0.13
Step-by-step explanation:
First let's find the probability of finding the first species or the second species:
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.61 + 0.08 - 0.28
P(A or B) = 0.41
Then, to find the probability of finding one or another but not both, we just need the symmetric difference of the events, that is: P(A or B) - P(A and B):
P(A or B) - P(A and B) = 0.41 - 0.28 = 0.13
Graph the line y=-1/3x+2
Answer:
Graphed below.
Step-by-step explanation:
The slope of the line is -1/3.
The y-intercept is at (0, 2).
The x-intercept is at (6, 0).
PLEASE HELP!!! TWO QUESTIONS 20 POINTS
Answer:
11.
a. Blank A = 97 - 54 = 43
or = 122 - 79 = 43
b. Blank B = 100 - 54 = 46
or = 125 - 79 = 46
c. Blank C = 100 + 122 = 222
or = 97 + 125 = 222
12.
a. Prob. of Apple female preference = no of Apple female ÷ Total no for Apple preference
= 194 ÷ 346 = 0.561
b. Prob. of Male Apple preference = no for Male for Apple ÷ No of Male
= 152 ÷ 320 = 0.475
c. Relative frequency of female of Microsoft preference = Female of Microsoft preference ÷ Total female
= 126 ÷ 320 = 0.394
please help me on this
Answer:
a. X=5b. X=4solution,
[tex]a. \: \: \frac{3x + 4}{2} = 9.5 \\ \: \: or \: 3x + 4 = 9.5 \times 2(cross \: multiplication) \\ \: \: or \: 3x + 4 = 19 \\ \: \: or \: 3x = 19 - 4 \\ \: \: or \: 3x = 15 \\ \: or \: x = \frac{15}{3} \\ \: x = 5[/tex]
[tex]b. \: \: \frac{7 + 2x}{3} = 5 \\ \: \: or \: 7 + 2x = 5 \times 3(cross \: multiplication) \\ \: \: or \: 7 + 2x = 15 \\ \: \: or \: 2x = 15 - 7 \\ \: or \: 2x = 8 \\ \: or \: x = \frac{8}{2} \\ \: \: x = 4[/tex]
Hope this helps..
Good luck on your assignment..
need some help thanks ;)
Answer:
137
Step-by-step explanation:
sum of angle in a circle = 360°
105 + 118 + x = 360
223 + x = 360
x = 360 - 223
x = 137
Please answer this correctly
Answer:
12.5%
Step-by-step explanation:
There is only one number 5 from a total of 8 parts.
1 out of 8.
1/8 = 0.125
P(5) = 12.5%
Answer:
12.5%
Step-by-step explanation:
Spinner divided in parts = 8
Number 5 = 1
P(5) = 12.5%
Select true or false for each equation
- 48 (134) = 1,608 True or False
- 7.3 • 0.14 = - 1.022 True or Flse
(- 0.28)(- 5.6) = - 1.568 True or False
(3/4)(- 1 1/3) = -1 True or False
Answer:
False
True
False
True
Step-by-step explanation:
Easiest and fastest way is to plug each equation into a calc and see if they match the values given. When you do so, you should get your answers.
Heather has divided $6700 between two investments, one paying 8%, the other paying 5%. If the return on her investment is $428, how much does she have in each investment?
Answer:
First investment = $3100
Other investment = $3600
Step-by-step explanation:
Total investment made by Henry = $6700
Let one investment be x,
Then other investment = total investment - first investment = 6700 - x
A) For 8% interest, investment = x
dollar value of 8% investment = 8/100*x= 8x/100
A) For 5% interest, investment = 6700- x
dollar value of 8% investment = 5/100*(6700- x)= 5(6700- x)/100
Total return on both the investment = 8x/100 + 5(6700- x)/100
= (8x +33500 - 5x)/100 = (3x+33500)/100
Given that total return = 428
Therefore,
(3x+33500)/100 = 428
=> 3x+33500 = 428*100 = 42800
=> 3x = 42800- 33500 = 9300
=> x = 9300/3 = 3100
Thus, first investment = x = $3100
other investment = $(6700 - 3100) = $3600
which one doesn't belong ? + pls explain anything helps!! thx:)
Agency K purchased 125 computers last year and 195 computers this year. What is the percentage increase from the number of computers purchased last year to this year?
Answer:
70% i believe.
Step-by-step explanation:
In triangle △JKL, ∠JKL is right angle, KM and is an altitude. JL=20 and ML=15, find KL.
Answer:
KL = 17.32
Step-by-step explanation:
[tex]KL^{2} = (ML)(JL)\\KL^{2} = (15)(20)\\KL^{2} = 300\\\sqrt{KL^{2} } = \sqrt{300} \\KL = 17.32[/tex]
Please answer question two minutes because I been waiting for an hours for answer question
Answer:
→VU
→TU
Step-by-step explanation:
→ stands for "ray" these sides are rays that form ∠VUT
A negative value of Z indicates that
A. the number of standard deviations of an observation is to the right of the mean
B. the number of standard deviations of an observation is to the left of the mean
C. a mistake has been made in computations, since Z cannot be negative
D. the data has a negative mean
Answer:
We need to remember that the Z value comes froma normal standard distribution given by:
[tex] Z\sim N(\mu=0,\sigma=1)[/tex]
So then the mean is 0 and all the values in the left are negative. So then if we want to analyze that if A is negative then value of Z indicates that :
B. the number of standard deviations of an observation is to the left of the mean
Step-by-step explanation:
We need to remember that the Z value comes froma normal standard distribution given by:
[tex] Z\sim N(\mu=0,\sigma=1)[/tex]
And the z score formula is given by:
[tex]z=\frac{X -\mu}{\sigma}[/tex]
So then the mean is 0 and all the values in the left are negative. So then if we want to analyze that if A is negative then value of Z indicates that :
B. the number of standard deviations of an observation is to the left of the mean
B. the number of standard deviations of an observation is to the left of the mean
A [tex]Z[/tex] score is a numerical measurement that describes a value's relationship to the mean of a group of values. The value of the [tex]Z[/tex] score tells you how many standard deviations you are away from the mean. A negative [tex]Z[/tex] score reveals the raw score is below the mean average. Also, a negative value of Z indicates that B. the number of standard deviations of an observation is to the left of the mean
For more information:
https://brainly.com/question/17756962?referrer=searchResults
What is the area of the figure below 13 in length, 11 in width, 29 in and 13 in?
Answer:
B. 533in²
Step-by-step explanation:
Step 1: Find the area of the rectangle
A = lw
A = (29)13
A = 377
Step 2: Find the leg of the triangle
13 + 11 = 24
Step 3: Find the area of the triangle
A = 1/2bh
A = 1/2(24)(13)
A = 12(13)
A = 156
Step 3: Add the areas of the 2 figures together
377 + 156 = 533
5 x (8-4) ÷ 4 - 2 please show work
Answer:
3
Step-by-step explanation:
=> 5 x (8-4) ÷ 4 - 2
Solving Brackets
=> 5 × 4 ÷ 4 - 2
Dividing
=> 5 × 1 - 2
Multiplying
=> 5 - 2
Subtracting
=> 3
Answer:
3
Step-by-step explanation:
5 x 4/4-2
5x1-2 (any expression divided by itself equals one)
5-2 (any expression multiplied by one remains the same)
=3
hope this helps love!
A rectangle was rotated 270° about the origin. The image is shown. Which points are vertices of the pre-image? Check all that apply.
Answer:
Answer:
M(3,2)
Step-by-step explanation:
270 = (y,-x)
(3,2)=(2,-3)
Step-by-step explanation:
Answer:
Also N(3, 1)
Step-by-step explanation:
Find the general solution of the differential equation and check the result by differentiation. (Use C for the constant of integration.) dy dt = 27t8
Answer:
[tex]y=3t^9+C[/tex]
Step-by-step explanation:
Given: [tex]\dfrac{dy}{dt}=27t^8[/tex]
We want to obtain the general solution of the given differential equation.
[tex]dy=27t^8$ dt\\$Take the integral of both sides\\\int dy =\int 27t^8$ dt$\\y=\dfrac{27t^{8+1}}{8+1} +C$, (where C is the constant of integration)$\\y=\dfrac{27t^{9}}{9} +C\\\\y=3t^9+C[/tex]
The general solution of the differential equation is: [tex]y=3t^9+C[/tex]
CHECK:
[tex]\dfrac{d}{dt} y=\dfrac{d}{dt}(3t^9+C)=\dfrac{d}{dt}(3t^9)+\dfrac{d}{dt}(C)\\\\\text{Since derivative of a constant is zero}\\\\\dfrac{dy}{dt}=27t^{9-1}\\\dfrac{dy}{dt}=27t^8[/tex]
m−4+m−5 how do i solve this?
Answer:
2m-9
Step-by-step explanation:
m-4+m-5
=m+m-4-5
=2m-9
Answer:
2m-9
Step-by-step explanation:
m-4+m-5
take the like terms
= 2m-4-5
= 2m-9
Sorry if that didn't help
Ten different numbers are written on pieces of paper and thrown into a hat. The sum of all the numbers is 205. What is the probability of selecting four numbers that have a sum greater than 82
Answer:
The probability is 40%
Step-by-step explanation:
a) There are ten pieces of paper with ten numbers
Probability of selecting four pieces of paper = 4/10 or 40%
Probability that the four numbers selected will have a sum greater than 82 = 82/205 = 40%
Therefore, the probability of selecting four numbers that have a sum greater than 82 out of ten numbers totalling 205 is 40%.
b) Probability is the ratio of the number of outcomes favourable for the event to the total number of possible outcomes. In other words, it is a measure of the likelihood of an event (or measure of chance).
What is 66 tens + 24 tens
Answer:
900.
Step-by-step explanation:
66 tens are 660.
and 24 tens are 240.
so, It is 900!
Select the action you would use to solve 4x = 16. Then select the property
that justifies that action.
A. Action: Divide both sides by 4.
B. Property: Multiplication property of equality.
C. Action: Multiply both sides by 4.
D. Property: Division property of equality.
E. Property: Addition property of equality.
O F. Action: Add 4 to both sides.
Answer:
A.
Step-by-step explanation:
Since you are trying to find x, you have to divide both sides by 4 to isolate x and get your answer.
The contents of a sample of 26 cans of apple juice showed a standard deviation of .06 ounces. We are interested in testing whether the variance of the population is significantly more than .003. The test statistic is
Answer:
Null hypothesis: [tex]\sigma^2 \leq 0.003[/tex]
Alternative hypothesis: [tex]\sigma^2 > 0.003[/tex]
And for this case the statistic is given by:
[tex] T= (n-1)\frac{s^2}{\sigma^2_0}[/tex]
And replacing we got:
[tex] T =(26-1) \frac{0.06^2}{0.003}= 30[/tex]
Step-by-step explanation:
We have the following info given:
[tex] n = 26[/tex] represent the sample size
[tex] s =0.06[/tex] represent the sample deviation
We want to test the following hypothesis:
Null hypothesis: [tex]\sigma^2 \leq 0.003[/tex]
Alternative hypothesis: [tex]\sigma^2 > 0.003[/tex]
And for this case the statistic is given by:
[tex] T= (n-1)\frac{s^2}{\sigma^2_0}[/tex]
And replacing we got:
[tex] T =(26-1) \frac{0.06^2}{0.003}= 30[/tex]