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Related Questions
Need some help on this question. Will award brainliest to a correct answer.
A car is moving at a fixed speed. The distance D that the car covers is then directly proportional to the time T it moves. Find the speed of the car. Write a formula that connects D and T. What is the coefficient of variation k equal to?
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Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of measurements yield x overbarequals103.29, y overbarequals103.75, requals0.899, P-valueequals0.000, and ModifyingAbove y with caret equals negative 9.5 plus 1.1 x, where x represents the IQ score of the younger child. Find the best predicted value of ModifyingAbove y with caret given that the younger child has an IQ of 105? Use a significance level of 0.05.
Answers
Answer:
106
Step-by-step explanation:
Given :
Number of the set of siblings = 20
This 20 pair yields [tex]$\overline x$[/tex] = 103.29, [tex]$\overline y$[/tex] = 103.75, requals = 0.899, P-value = 0.000
Let x represents the IQ score of the younger child.
And y is the predicted value of Y(^).
So according to the question,
x = 105
and y = -9.5 + 1.1 x
Then,
y = -9.5 + 1.1 (105)
y = -9.5 + 115.5
y = 106
So the best predicted value of Y(^) is 106
How many flowers, spaced every 6 in., are needed to surround a circular garden with a 100-ft radius?
Answers
Answer:
Number of flowers required = 1256
Step-by-step explanation:
Circumference of a circle is given by the formula,
Circumference = 2πr
Here, r = radius of the circle
For a circle with radius = 100 in.
Therefore, circumference = 2π(100)
= 200π
= 628.32 ft
Distance between each flower = 6 in
≈ [tex]\frac{6}{12}[/tex]
= 0.5 ft
Number of flowers = [tex]\frac{\text{Circumference}}{\text{Space between each flower}}[/tex]
= [tex]\frac{628.32}{0.5}[/tex]
= 1256.63
≈ 1256
Therefore, number of flowers required = 1256
Write the equation of the line that passes through the points (4,1) and (-6,9). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
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Answer:
Find the slope:
[tex]m = \frac{y2-y1}{x2-x1} = \frac{9 - 1}{-6 - 4} = -\frac{8}{10} = -\frac{4}{5}[/tex]Use point-slope form and one of the points:
y - y₁ = m(x - x₁)[tex]y - 1 = -\frac{4}{5}(x - 4)[/tex]how to solve for x? i need help please help fast
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Hi!
x² = 11,2² - 8,5²
x² = 125,44 - 72,25
x² = 53,19 |√
x ≈ 7,3
hii please help i’ll give brainliest
Answers
Answer:
18
Step-by-step explanation:
Multiples of 6: 6, 12, 18, etc.
Multiples of 9: 9, 18, etc.
the least common multiple here is 18
Answer:
Example: 9 and 12
Step-by-step explanation:
9: 9, 18, 27, 36, 48, 54, 63, 72..
12: 12, 24, 36, 48, 60, 72
36 is the first number that occurred in both list, so 36 is the least common multiple of 9 and 12
What was Dimitri's mistake? He mixed up the coordinates of the ordered pair when Substituting it into the equations 7x+9y=-4 and 5x-2y=6
Answers
Answer:
He made a mistake in his calculations when simplifying 5x - 2y
Step-by-step explanation:
Given
The coordinate pair
[tex](x,y) = (2,-2)[/tex]
The equations
[tex]7x + 9y = ?[/tex]
[tex]5x - 2y = ?[/tex]
Dimitri's Solution
[tex]Equation\ 1: 7x + 9y = -4.[/tex]
[tex]7(2) + 9 (-2) = -4.[/tex]
[tex]14 + (-18) = -4.[/tex]
[tex]-4 = -4.[/tex]
[tex]Equation\ 2: 5x -2y = 6.[/tex]
[tex]5(2) - 2 (-2) = 6.[/tex]
[tex]10 - 4 = 6.[/tex]
[tex]6 = 6.[/tex]
Required
Identify Dimitri’s mistake
In the first equation, Dimitri made no mistake.
However, he made a mistake when simplifying the second equation.
We have:
[tex]5x - 2y[/tex]
and
[tex](x,y) = (2,-2)[/tex]
Substitute [tex]x = 2[/tex] and [tex]y = -2[/tex]
So, we have:
[tex]5(2) -2(-2)[/tex]
Open bracket
[tex]10 +4[/tex]
Finally, we have:
[tex]14[/tex]
Given the diagram shown below, find the value of 3x
Answers
Answer:
x= 6
Step-by-step explanation:
by using Pythagoras theorem
(30)={(9x^2+ 16x^2)}1/2
30= 5x
x= 30/5
x= 6
Answer:
18
Step-by-step explanation:
The triangle is a right triangle with sides 3x, 4x, 5x.
5x = 30
x = 6
3x = 3(6) = 18
Answer: 18
Which value below shows the strongest correlation?
A. 0.72
B. 0.35
C. 0.91
D. 0.99
E. 0.88
F. 0.29
G. 0.06
H. -0.55
Answers
Answer:
The answer is D. = 0.99
The radius of a cylindrical cup is 6 ft and its volume is 420 cubic ft. Find the
height of the cup.
A.5 ft
B.3.71 ft
C.2.98 ft
D.6 ft
Answers
Answer:
Step-by-step explanation:
Volume of cylinder=pir^h
420={22/7×6×6]h=792/7h=113.14h
h=420/113.14
h=3.712
please help
2y+x=-15
y=2x
Answers
Answer: x = -3
Step-by-step explanation:
2y + x = -15
y = 2x
2y = 2(2x) = 4x
4x + x = -15
5x = -15
x = -3
Claire had 4 1/6 feet of string. She used some string to hang out decorations. Now she has 1 5/6 feet of string left. How much string did claire use? Draw a model and solve.
Answers
Answer:
Length of string used by Claire = 7 / 3 feet
Step-by-step explanation:
Given:
Length of string Claire in starts = [tex]4\frac{1}{6}[/tex] feet
Length of string Claire in end = [tex]1\frac{5}{6}[/tex] feet
Find:
Length of string used by Claire
Computation:
Length of string Claire in starts = [tex]4\frac{1}{6}[/tex] feet = 25 / 6 feet
Length of string Claire in end = [tex]1\frac{5}{6}[/tex] feet = 11 / 6 feet
Length of string used by Claire = Length of string Claire in starts - Length of string Claire in end
Length of string used by Claire = [25 / 6] - [11 / 6]
BY taking LCM
Length of string used by Claire = [25 - 11] / 6
Length of string used by Claire = 14 / 6
Length of string used by Claire = 7 / 3 feet
tasha purchased an ipad for $625. a year later, it was selling for $500. what was the percent of change?
a. 20% increase
b. 25% increase
c. 20% decrease
d. 25% decrease
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A jar contains 4 green marbles 2 pink marbles 3 striped marbles. One marble is picked at random and then replaced. Then another marble is drawn at random again. What is the probability that both marbles are striped?
Answers
Answer:
25%
Step-by-step explanation:
Answer: It’s 1/9 I got the same question on my test.
can someone help me with this ?
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Answer:
de goes with bc ab goes with fd and angle f is angle A and angle d is angle B
Step-by-step explanation:
Answer:
Step-by-step explanation:
Christopher needs to buy wooden boardes to build a box that is 12 inches long, 6 inches wide, and 8 inches high. How many square inches of wooden boards is needed to build the box
Answers
Answer:
432 in²
Step-by-step explanation:
To Obtian the square inches of wooden boards required :
Area of box = 2(l * w) + 2(l * h) + 2(h * w)
Length = 12 ; width = 6 ; height = 8
Hence,
Area of box = 2(12 * 6) + 2(12 * 8) + 2(8 * 6)
Area of box = 2(72) + 2(96) + 2(48)
Area of box = 432 in²
Find the missing side.
Need help please.
Need to show how to get the answer.
Answers
Answer:
8
Step-by-step explanation:
What is the center of the data?
Number of Green Candies in a Bag
A dot plot going from 10 to 15. 10 has 1 dot, 11 has 3 dots, 12 has 1 dot, 13 has 2 dots, 14 has 3 dots, and 15 has 3 dots.
The center is
.
Answers
Answer:
[tex]Median = 13[/tex]
Step-by-step explanation:
Given
See attachment for dot plot
Required
The center of data
This implies that, we calculate the median
From the attached plot,
[tex]n = 13[/tex] --- number of observation
So, the median is:
[tex]Median = \frac{n + 1}{2}[/tex]
[tex]Median = \frac{13 + 1}{2}[/tex]
[tex]Median = \frac{14}{2}[/tex]
[tex]Median = 7th[/tex]
The median is at the 7th position
At the 7th position, is 13
Hence:
[tex]Median = 13[/tex]
Answer:
i think it would be 13?
Step-by-step explanation:
just guessing but im pretty sure its 13
Identify each pair of angles in the diagram below as adjacent, vertical,
corresponding, alternate interior, or none of these.
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Answer:
1) corresponding
2) alternate interior
3) corresponding
4) alternate exterior
5) vertical
6) supplementary
9
?
Find the arc length of the semicircle,
Either enter an exact answer in terms of ar or use 3.14 for 7 and enter your answer as a decimal.
units
Answers
Answer:
28.26 units
Step-by-step explanation:
Given:
Radius (r) = 9
π = 3.14
Required:
Arc length
Solution:
Arc length = θ/360 × 2πr
θ = 180° (half of a circle = 180°)
Plug in the values into the formula
Arc length = 180/360 × 2 × 3.14 × 9
Arc length = ½ × 56.52
Arc length = 28.26 units
Find the volume of the cylinder. Use 3.14 for u. Round to the nearest whole number.
Radius-34 m
Height-45 m
Answers
Answer:
1530 cubic centimeters
Can I get help with this please?
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5(x+1)=20 —— distribute the 5 to the x and 1
5x+5=20 ——- subtract 5 from 20
5x=15 ———— divide by 5 from both sides
X=3 ————— answer
Second equation:
5x+1=20——— subtract 1 from 20
5x=19 ———— divide by 5 from both sides
X=19/5———— answer in fraction form
X=3.8————- answer in decimal form
Use this data to answer the questions below:
2, 4, 7, 8, 9, 12, 13
What is the range of the data?
What is the second quartile Q2 (or what is the median)?
What is the interquartile range? (Q1-Q3)
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Answer: The Range is 11
The Q2 is 8
The Interquartile range is 8
In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Boubacar sets up a website where players can buy and sell these costumes online. Information about the number of people who visited the website and the number of costumes purchased in a single day is listed below.
120 visitors purchased no costume.
235 visitors purchased exactly one costume.
3 visitors purchased more than one costume.
Based on these results, express the probability that the next person will purchase no costume as a percent to the nearest whole number.
Answers
Answer:
Step-by-step explanation:
p[p
Answer: 34%
Step-by-step explanation:
(Trust me)
What is the slope of the line on the graph
Answers
Answer:
slope of the line(m) =(y2-y1)/(x2-x1)
or, m=(16-10)/(6-3)
or, m=6/3
So, m=2
Assume that 80 yen = $1.
What is the yen price of $1?
What is ths dollar price of 1 yen?
How many dollars would you need to buy a 20,000 yen iphone?
Answers
Answer:
250$
Step-by-step explanation:
[tex]80/1 = 20000/x\\20000/80=250\\1 * 250=250\\\\80/1 = 20000/250\\[/tex]
x-y=3 what is this in slope intercept form
Answers
Answer:
y=x-3
Step-by-step explanation:
A quality control manager samples 700 LED bulbs and finds defects in 8 of them. What is the probability that a bulb selected at random will have a defect?
Answers
Answer: 0.0114
Step-by-step explanation:
Since we are given the information that the quality control manager samples 700 LED bulbs and finds out that 8 bulbs have defects in them.
The probability that a bulb selected at random will have a defect will be calculated as follows:
= Number of defected bulbs / Total number of bulbs sampled
= 8/700
= 0.0114
Therefore, the probability is 0.0114.
PLZ HELP
How many solutions does the equation 3s + 7 = 3 + 4 + 3s have? (5 points)
a
Two
b
None
c
One
d
Infinitely many
Answers
Answer:
(d) infinitely many solutions
Step-by-step explanation:
Subtract 3s from both sides of 3s + 7 = 3 + 4 + 3s. We get
7 = 3 + 4, or 7 = 7. This is always true. There are (d) infinitely many solutions.
Answer:
(d) infinitely many solutions.
Point R′ (−2, 8) is the image of point R (−2, 2). Which of the following algebraic representations could be used for that transformation?
Select one:
(x,y)→(−x,y)
(x,y)→(4x,4y)
(x,y)→(x,y+6)
(x,y)→(x+6,y)
Answers
Answer:
C) (x,y) → (x,y+6)
Step-by-step explanation:
As the x value stays the same after the transformation, we know that there can be no changes to the value x, automatically limiting the options to answer C.
The mathematical way to find the value y is changed by would be by setting up a small equation as follows:
[tex]8 = 2 + n[/tex], where n is some number that the y value is altered by.
Solving for n gives the value 6, proving that the translation must add 6 to the y value.