Answer:
a
Step-by-step explanation:
PLEASE HELP 25 POINTS! :) multiple choice!!!
A study was conducted on the effect of daytime running lights on cars. Researchers gathered data from a random sample of 3,248 drivers and measured quite a few variables, in addition to the explanatory variable of daytime running lights and the response variable of less accidents. According to a newspaper article summarizing the study, those cars that had daytime running lights were more likely to be operated by drivers who were confident and attentive. Drivers whose cars did not have daytime running lights were about 22% more likely to have an accident. What conclusion can we draw from this study? Explain.
a. We can infer a cause-and-effect relationship because the sample was selected randomly.
b. We cannot infer a cause-and-effect relationship because we do not have a control group.
c. We can infer a cause-and-effect relationship because multiple variables were included.
d. We cannot infer a cause-and-effect relationship because treatments were not assigned randomly.
e. We cannot infer a cause-and-effect relationship because the treatments imposed were not blocked correctly.
Answer:
a
Step-by-step explanation:
What is the equation of the line that passes through the point (-6,6) and has a slope of 1/3
Answer:y=1/3x+8
Step-by-step explanation:
Plug it into point slope form
y-6=1/3(x+6)
y-6=1/3x+2
+6. +6
y=1/3x+8
Order 7.007, 70.07, 70.700, 7.070 greatest to least.
Round 1.050 to the nearest tenth.
Round 8.964 to the nearest hundredth.
Tom bought 6 new baseball trading cards to add to his collection. The next
day his dog ate half of his collection. There are now only 44 cards left.
How many cards did Tom start with?
Answer:
Tom started with 100 cards.
Step-by-step explanation:
44+6=50
dog ate half of cards.
half of 100 is 50
so tom started with 100 cards.
Answer:
88 because the dog ate half of his collection so he has only 44cards left then we multiplay by 2
Mrs. Harris gave a quiz in math class. The table below shows the relationship between the number of correct answers and the student’s grade. What is the constant of proportionality (points per question) for the quiz? *
Answer:
The answer is 18
Step-by-step explanation:
Answer:
I am pretty sure it's 2.5 because my little sister got the question and I helped her with it!
Step-by-step explanation:
proof it's 2.5 !
divide y by x and you get 2.5
A store had 913 sodas, both diet and regular. The ratio of diet sodas to regular sodas was 8:3. How many diet sodas were there?
Answer:
There are 664 diet sodaStep-by-step explanation:
Step one:
given data
total soda= 913
we are told that the ratio of diet sodas to regular sodas is 8:3
this means that for every 8 diet soda there is 3 regular soda
the total ratio is 8+3=11
Step two:
we are going to use part to all principle
let the diet soda be x
8/11=x/913
cross multiply
11x=913*8
divide both sides by 11
x=913*8/11
x=7304/11
x=664
There are 664 diet soda
Rain is falling steadily in Seattle, Washington. After 6 hours, 4 inches of rain has fallen. How many inches of rain will fall in 1 hour?
Answer:
[tex]\frac{2}{3}[/tex]in
Step-by-step explanation:
4in is the total so if it takes 6 hours. divide 4 by 6 and you get [tex]\frac{2}{3}[/tex].
Fast way to do this is to write out 4/6 and see they both can divide by 2. then you have the fraction in simplest form.
(-12,-1) and (-3,-4)
Answer:
slope is -1/3x and equation y=-1/3x-5
Step-by-step explanation:
use (y2-y1)/(x2-x1)
equals -3/12
-1/3
multiply 1/3 by 3 and add to -4 to get -5 for the intercept.
The ordered pairs (6, 24) and (1, s) represent a proportional relationship. Find the value of s.
s = 4
s = 5
s = 18
s = 30
Need this ASAP
100 points!
Answer:
s = 18
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Answer this question pls
Answer:
1/5 gallon left so A. would be the answer
Step-by-step explanation:
Choose the equation below that represents the line passing through the point (1, −4) with a slope of one half
Answer:
Its this one
Step-by-step explanation:
y + 4 = 1/2 (x − 1)
I got it right on my quiz :)
Quadrilateral MNOP is reflected over a line and translated up, as shown.
what is the value of x, in degrees?
Answer: its 130 degrees
Step-by-step explanation: if you reflect it over the line and translate it up a little to be on top of the other image it will be the same and have 130 degrees in the same spot
Identify the new perimeter of the square using a scale factor of 1/3
Answer:
5
Step-by-step explanation:
15 × [tex]\frac{1}{3}[/tex] = 5
Carl wants to plant a garden that is 1 1/3yards long and has an area of 8 4/7 square yards. How wide should he make the garden? Simplify your answer.
Answer: 6.428 0r 6 3/7 yards wide
Step-by-step explanation:
Step 1
Area of a rectangular or square garden is given as = Length x width
we were given
Length as 1 1/yards long
an area as 8 4/7 square yards
Therefore width= ?
Step 2----Solving
Area= Length x width
WIDTH = Area / Length
= 8 4/7 square yards/1 1/3 yards long
8.571/1.3333 = 6.428 yards wide
Or can be calculated as
60/7 x 3/4= 45/7 =6 3/7 yards wide
what are the possible values of x for the diagram
Answer:
I think its 21 but iam not sure about the rest
An apple tree is 93 ft tall and a peach tree is 5ft tall. How much taller is the
apple tree than the peach tree? help!!
- 1973 + 93.c? + 27x – 486
Submit Question
Answer: 93c+27x−2459
Step-by-step explanation:
the slope is 5 passing through ( -1, 4)
Answer:
y = 5x + 9
Step-by-step explanation:
Assuming you require the equation of the line.
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 5, thus
y = 5x + c ← is the partial equation
To find c substitute (- 1, 4) into the partial equation
4 = - 5 + c ⇒ c = 4 + 5 = 9
y = 5x + 9 ← equation of line
Find the surface area and volume of each solid to the nearest tenth.
16 m
15 m
17 m
Is 4 hours greater or less than 14,400 seconds? (Or equal too)
Answer:
Equal to.
Step-by-step explanation:
The easiest way to figure this out is to convert 14,400 seconds to hours. There are 60 seconds in a minute and 60 minutes in an hour. So, divide 14,400/60, which is 240. This is now 240 minutes. To figure out minutes into hours, divide 240/60, which is 4. 4=4, so 4 hours equals 14,400 seconds.
Hope this helps you out...have a good day c:
The perimeter of a rectangular field is 318 yards. If the width of the field is 74 yards, what is its length?
Answer:
85 yards
Step-by-step explanation:
Perimeter= length+breadth+length+breadth
Length=(318-74-74)÷2
=170÷2
=85 yards
Answer:
length is 85
Step-by-step explanation:
l= p/2 - w=318/2 - 74 = 85
b
Determine if the following statement is true or false: Children are typically
introduced to video games between the ages of six and eight. Explain your answer
using data from the graph. (2 points)
Answer:
The following statement, “Children are typically introduced to video games between the ages of six to eight” is a true statement. The graph shows that a very small percentage of children from birth to five years old play video games, but suddenly, once they have turned 6, there is practically a 60% increase in how many kids are playing video games one hour a week. It is from the age 6 that the kids start off and are introduced to the video games, as more and more kids end up playing as well as the grow older.
Step-by-step explanation:
change wording
We can easily conclude from the column chart that children at the age group of 6-8 are introduced to video games typically.
What is column chart?
''A column chart is a data visualization where each category is represented by a rectangle, with the height of the rectangle being proportional to the values being plotted. Column charts are also known as vertical bar charts.''
From the column chart, it is clear that children of age groups of 0-2 and 3-5 are using almost minimum amount of video games. The percentage is near about (0 - 5%).
After that, the children of the age group of 6-8 are using video games for a much longer period as compared to the previous two groups. The percentage is 60%.
After that, the next children of the age group of 9-11 are using video games for a much slightly more as compared to the previous group. The percentage is around 65%
The children of the age group of 12-14 are using video games for a slightly longer period as compared to the previous group. The percentage is about 75%.
The children of the age group of 15-17 are using video games for a maximum period in this graph. The percentage is 80%.
We can easily conclude from the column chart that children at the age group of 6-8 are introduced to video games typically. Because, before that age there were not much playing of video games as per the given column chart .
Learn more about column chart here: https://brainly.com/question/26501836
#SPJ2
lisa purchased a board at Home Depot that was 8.5 feet long she paid $.30 per foot how much does the board cost
Answer:
8.5 x .3 = 25.5
Step-by-step explanation:
A rectangular lawn of length 40m and breadth 25m is to be surrounded externally by a path which is 2m wide. Find the area of the path.
Answer:
276m^2
Step-by-step explanation:
area = 2(25*2) + 2(40*2) + 4(2*2)
area = 2(50) + 2(80) + 4(4)
area = 100 + 160 + 16
area = 276m^2
Answer:
276m²
Step-by-step explanation:
area of path = area of outer rectangle - area of inner rectangle
dimensions given of inner = l-40m
b - 25m
thickness = 2m
new l = 40+2+2 = 44m = L
new b = 25 + 2+ 2= 29m = B
hence, LB- lb = area of path
= 44*29 - 40*25
= 1276 - 1000
= 276m²
Hannah paid $15.79 for a dress that was
originally marked $24,99. What is the
percent change in the price of the dress?
A. 63% B. 58%
C. 158% D. 37%
Answer:D.37%
Step-by-step explanation:*24.99x0.37=9.24
24.99-9.24=15.79
help I don't know how to factor this
Step-by-step explanation:
36ab² - 48a²b
= 12ab(3b - 4a)
choice 1
12ab is a common factor of both 36ab² and 48a²b
PLZ HELP HELP!!!!!!!Two pairs of jeans cost $75 before tax. If the total paid for the two pairs of jeans with tax was $81, what is the percentage of tax paid?
Mike runs 12.6 miles in 3.5 hours. How fast does he run in miles per hour?
ALM not BLM
Answer: 3.6 mph
Step-by-step explanation:
Divide both numbers by 3.5 to get 3.6 miles per hourThat's the only step since they give you that much.
More specifically though, we could create an equation.
[tex]12.6=3.5x[/tex] where x is the mph.
Solve the equation by dividing both sides by 3.5 and get the same answer.
Show or explain why 75.7-9 = 7-4.
Yes
Answer:
This is a false statement
Step-by-step explanation:
75.7-9=66.7
7-4=3
66.7 is not equal yo three therefor it is false
12-gon
Sum of interior angles and the measure of each interior angle for the given regular polygons
Answer:
The sum of the interior angles = 1800Interior angle = 150°Step-by-step explanation:
we know that the sum of all the Exterior Angles of a polygon is 360°.
i.e.
Sum of all the Exterior Angles of a polygon = 360°The formula to find the Exterior angle:
Exterior angle = 360° / nAs the total number of sides = n = 12
so
Exterior angle = 360° / 12 = 30
so
Every exterior angle = 30°
As the Interior Angle and Exterior Angle tend to be measured from the same line, hence they add up to 180°.i.e.
Interior Angle = 180° − Exterior Angle
= 180° - 30°
= 150°
The formula for calculating the sum of interior angles is:
( n − 2 ) × 180° = (12-2) × 180
= 10 × 180
= 1800
SECOND METHOD TO DETERMINE INTERIOR ANGLE MEASURE
Interior angle = sum of interior angle ÷ number of sides
= 1800 ÷ 12
= 150
Hence,
The sum of the interior angles = 1800Interior angle = 150°