Answer:
A. the brand of car
Step-by-step explanation:
quantitative variable are those variable whose value can be represented by any number. The number may be fractional, decimal or discrete. But it should have some value like 2, 8, 1000 , 3.555, 4/5 ETC.
______________________________
Given
A. the brand of car
The brand cannot have numerical value. Brand has value like ferrari, mercedes, SKODA , JEEP etc.
Hence,
A. the brand of car is an example of a quantitative variable that might not be used to describe a car in a race. (Answer)
___________________________
Other three
can have numerical values
as
the number of tires can have value 1,2,3,4,5
the number of laps completed can have value from 0, 1, 2, ...to n laps as decided for thr race
average speed can have value 40 km.hr, 45.666 km/hr ...etc
Answer:
the brand of car
This is the answer edge 2020
Step-by-step explanation:
A cyclist rides her bike at a speed of 18 miles per hour. What is this speed in kilometers per hour? How many kilometers will the cyclist travel in 2 hours? In
your computations, assume that I mile is equal to 1 kilometers. Do not round your answers.
Speed: ___km/h
Distance traveled in 2 hours :
__km
Answer: 110
Step-by-step explanation:
Answer:
Step-by-step explanation:
If g(x)=x^2+4x-5, find g(-4) PLEASE HELP
Answer:
-5
Step-by-step explanation:
g(x)=x^2+4x-5
g(-4)=(-4)^2+4(-4)-5
g(-4)=(-4)(-4)+(-16)-5
g(-4)=16-16-5
g(-4)=0-5
g(-4)=-5
A construction company showed that the strength, y, of concrete, measured
by the percent of design strength attained, depends on the length of time, x,
(in days) since it was poured.
This value can be approximated by the equation y = 2.8x + 17.
a) What is the y-intercept? What does it mean in this setting? Your answer should tell something about the strength of concrete.
b) What is the slope? What does it mean in this setting? Your answer
should tell something about the strength of concrete.
c) How long does it take before y = 100?
Answer:
a) y-intercept = 17; initial design strength percentage
b) slope = 2.8; increase in that percentage each day
c) 29.6 days to 100% design strength
Step-by-step explanation:
a, b) The equation is in the form called "slope-intercept form."
y = mx + b
where the slope is m, and the y-intercept is b.
Your equation has a slope of 2.8 and a y-intercept of 17.
The y-intercept is the percentage of design strength reached 0 days after the concrete is poured. The strength of the concrete when poured is 17% of its design strength.
The slope is the percentage of design strength added each day after the concrete is poured. The concrete increases its strength by 2.8% of its design strength each day after it is poured.
__
c) To find when 100% of design strength is reached, we need to solve for x:
100 = 2.8x +17
83 = 2.8x
83/2.8 = x ≈ 29.6
The concrete will reach 100 percent of its design strength in about 30 days.
John writes 1/5 of a page in 1\10 of a minute how much time is it going to take for him to read a whole page
Answer:
2 pages/min
Step-by-step explanation:
Unit rate is:
1/5 page 1 * 10
------------------ = --------- page/min = 2 pages/min
1/10 min 5 * 1
Answer:
30 seconds
Step-by-step explanation:
1/10 of a minute: 6 seconds
60/10 = 6
6x10 = 60
now, if 6 seconds is 1/5 of the page you need to multiply
6 x 5 = 30 seconds
it takes him 30 seconds to write a page
Which of these is least likey to describe a distance below sea level? Whole Number ,Integer, Rational Number, Real Number
Answer: A) Whole number
Explanation:
The set of whole numbers is {0,1,2,3,...} showing that negative values are not in this set. A distance below sea level is written as a negative (where positive values are above sea level). So you won't use the set of whole numbers for this type of problem.
In contrast, something like the set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ... } including negatives this time. For example, we can write -10 to indicate we're 10 feet below sea level. Rational numbers and real numbers can also be negative.
The midpoint of AB is M(4, -1). If the coordinates of A are (2,5), what are the
coordinates of B?
Answer:
(6, -7)
Step-by-step explanation:
(x, y)=(4, -1)
(x1+x2)/2=4
(y1+y2)/2=-1
-----------------
x1+x2=8
2+x2=8
x2=8-2=6
---------------
y1+y2=-2
5+y2=-2
y2=-7
---------------
(6, -7)
1.1.31
Determine whether the equation defines y as a function of x.
y = 3x² + 5x-4
Does the equation define y as a function of x?
Yes
No
Answer:yes
Step-by-step explanation:well its just yes so your welcomecan y’all please help me !!
Find the values of the UCL and LCL for the (x-bar) chart for this data, and round your answers to 3 places after the decimal point. a. UCL
Full question attached
Answer:
UCL for x bar chart=7.145
LCL for x bar chart=4.874
Explanation:
Please find answer attached
Is the product of fifteen negative integers positive or negative?
Answer:
the sign of the product of 15 negative numbers will be negative
Step-by-step explanation:
Heya mate!!
The product of odd numbers is odd and the product of even numbers is even.
so 15 is an odd number then the sign of product is odd
Hope this helps!!!
what is 7.004 as a fraction
Answer: It's 176/25 or 7 remainder 1/25
If x and y are consecutive positive integers and x2 – y2 = 11, what is the value of y?
E. 1
F. 3
G. 5
H. 6
please provide explanation
Answer:
y = 5
Step-by-step explanation:
We khow that x and y are consecutive integers and that x^2 is greater than y^2 since x^2-y^2=11
● so x is greater than y
● wich means that x = y+1
● x^2-y^2=11
● (y+1)^2-y^2 = 11
● y^2+2y+1-y^2=11
● 2y + 1 = 11
● 2y +1-1 = 11-1
● 2y = 10
●2y/2 = 10/2
● y = 5
A luxury liner leaves a port on a bearing of 110 degrees and travels 8.8 miles. It then turns due west and travels 2.4 miles. How far is the liner from the port, and what is its bearing from the port?
Answer:
Distance= 6.6 miles
Bearing= N 62.854°W
Step-by-step explanation:
Let's determine angle b first
Angle b=20° (alternate angles)
Using cosine rule
Let the distance between the liner and the port be x
X² =8.8²+2.4²-2(8.8)(2.4)cos20
X²= 77.44 + 5.76-(39.69)
X²= 43.51
X= √43.51
X= 6.596
X= 6.6 miles
Let's determine the angles within the triangle using sine rule
2.4/sin b = 6.6/sin20
(2.4*sin20)/6.6= sin b
0.1244 = sin b
7.146= b°
Angle c= 180-20-7.146
Angle c= 152.854°
For the bearing
110+7.146= 117.146
180-117.146= 62.854°
Bearing= N 62.854°W
She cools one sample of bacteria to a temp of - 51 degrees C and another to -76 degrees C. What was the temperature difference in the two experiments?
It is 25 C
76 - 51 = 25
Evaluate 9 -- 5 when b 8.
9+5=14 bx8=8b Hope this helps sir or miss!
I need help with this question thx
Answer: -5x^3 + 5y^3
Step-by-step explanation: The other parts cancelled out
Answer:
= -5x³ + 5y³
Step-by-step explanation:
4y³ - 5x³ - 1 - 4y³ - 6 + 7 + 5y³
= -5x³ + (4y³ - 4y³ + 5y³) + (- 1 - 6 + 7)
= -5x³ + (0 + 5y³) + (- 7 + 7)
= -5x³ + 5y³
Round 24,619,746 to the nearest hundred
Answer:
2,461,974
hope this helped
Answer:
[tex]24,619,700[/tex]
Step-by-step explanation:
[tex]24,619,746[/tex] to the nearest hundred
In the hundreds, it says 746. Since 46 is close 0, the answer would be [tex]24,619,700[/tex]. If the number was greater than 5 it answer would have been [tex]24,619,746[/tex] . But the number is 46. So that means your answer is
[tex]24,619,700[/tex]
Hope this helps!
In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. The correct set of hypotheses is:________.A) H0: P > 0.75 Ha: P 0)75B) H0: P < 0.75 Ha: P 0)75C) H0: P 0)75 Ha: P < 0.75D) H0: P 0)75 Ha: P > 0.75
Answer:
a
Step-by-step explanation:
find the sum or difference -80+77
Answer:
Step-by-step explanation:
-3 is the difference
Given that events A and B are independent with P(A) = 0.4 and P(B) = 0.25,
determine the value of P(A and B), rounding to the nearest thousandth, if
necessary
Answer:
0.1
Step-by-step explanation:
To do this you would just multiply 0.4 and 0.25 which would get you 0.1
Evaluate 6j+23+k/l−3, when j=3, k=7, and l=33.
Enter your answer in the box.
Answer:
37 7/33 or 37.212
Step-by-step explanation:
6j + 23 + k/l - 3
If j = 3, k = 7, and l = 33:
6 × 3 + 23 + 7/33 - 3
= 18 + 22 + 7/33 - 3
= 40 + 7/33 - 3
= 40 7/33 - 3
NOTE: Because 40 and 3 are whole numbers, 3 will be subtracted from 40.
= 37 7/33 or 37.212
The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three times the measure of the first angle. The third angle is 29 more than the second. Let x, y, and z represent the measures of the first, second, and third angles, respectively. Find the measures of the three angles.
====================================================
Explanation:
The three angles add to 180, so x+y+z = 180
The second and third angles add to 3 times the measure of the first, so y+z = 3x
The third angle is 29 more than the second, so z = y+29
----------------------------
The system of equations is
[tex]\begin{cases}x+y+z = 180\\\\y+z = 3x\\\\z = y+29\end{cases}[/tex]
For now, let's focus on the second and third equations only.
Start with y+z = 3x. Replace z with y+29 which is valid because of the third equation.
So we'll have
y+z = 3x
y+y+29 = 3x
2y+29 = 3x
Let's isolate y
2y+29 = 3x
2y = 3x-29
y = (3x-29)/2
y = 3x/2 - 29/2
y = 1.5x - 14.5
We'll use this later.
--------------------------
Go back first equation of the system. Plug in z = y+29
x+y+z = 180
x+y+y+29 = 180
x+2y+29 = 180
Then plug in y = 1.5x - 14.5 we found earlier
x+2y+29 = 180
x+2(1.5x-14.5)+29 = 180
x+3x-29+29 = 180
4x = 180
x = 180/4
x = 45
---------------------------
We can use this x value to find y
y = 1.5x - 14.5
y = 1.5*45 - 14.5
y = 53
and use this to find z
z = y+29
z = 53+29
z = 82
As a check, x+y+z = 45+53+82 = 180 to help confirm the answer. I'll let you check the other equations.
What is the equation of the linear model shown?
A. y = 0.8x + 4
B. y = 1.25x − 0.5
C. y = −0.8x + 20
D. y = 0.8x + 0.4
Answer:
A. y = 0.8x + 4
Step-by-step explanation:
i just took the test
The equation of the linear model shown is A. y = 0.8x + 4
A linear model refers to a model where a response variable is being described. It should be noted that the response should be a continuous variable
The linear model is the framework for the set of models that predict a quantitative dependent variable through the independent variables given.
Based on the diagram, the equation of the linear model shown is y = 0.8x + 4
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PLease Help! I'm Stuck
We can solve this problem in two ways.
1. From the description we conclude that the described sequence is a geometric sequence where the first term a₁ = 2 and common ratio r = 3, so:
[tex]\boxed{a_n=2\cdot3^{n-1}}[/tex]
Answer D.
2. The easiest way. We know that a₁ = 2, so let's substitute n = 1 for each of the possible answers:
A. 3·2ⁿ = 3·2¹ = 3·2 = 6 - Wrong
B. 2·3ⁿ = 2·3¹ = 2·3 = 6 - Wrong
C. 3·2ⁿ⁻¹ = 3·2¹⁻¹ = 3·2⁰ = 3·1 = 3 - Wrong
D. 2·3ⁿ⁻¹ = 2·3¹⁻¹ = 2·3⁰ = 2·1 = 2 - Correct.
What is the height of BA?
Answer:
10 cm
Step-by-step explanation:
2/10=x/50
cross multiply
2*50=x*10
100÷10=x
x=10
Please help! Click on image. Hurry quick!
Answer:
the answers are
a) Area of triangle is 15 square inches
Perimeter of triangle is 18.5 inches.
b) Area of trapezium is 210 square cm.
Perimeter of trapezium is 61.5 cm.
c) Area of parallelogram is 21 square yards
perimeter of parallelogram is 22 yards
Step-by-step explanation:
Area of triangle is 1/2( base × height)
Area of trapezium is 1/2(p1 + p2)×height
Area of parallelogram is base × height
Solve the inequality z−18≥−23 and write the solution in interval notation, using improper fractions if necessary
Answer: [-5,∞)
Step-by-step explanation:
z-18 ≥ -23 Add 18 to both sides
+18 +18
z ≥ -5
Which means x has to be greater than negative 5.
In interval notation it will be [-5,∞)
Answer:
z ∈ [-5; +∞)
Step-by-step explanation:
z - 18 ≥ - 23
<=> z ≥ 18 - 23
<=> z ≥ -5
----> z ∈ [-5; +∞)
Will mark brainliest
Answer:
Step-by-step explanation:
The quotient of Y and 6 is 29" translates to Y/6 = 29. Solve this for Y
Y/6 = 29
Y = 29*6
Y = 174
So the second option is good
Number 15 is most likely the last option
Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{1. \: \: \: \: \frac{y}{6} }}}}[/tex]
[tex] \boxed{ \bold{ \boxed{ \sf{ 2. \: \: \: - 8}}}}[/tex]
Step-by-step explanation:
1. Quotient is a term for a division.
Quotient of y and 6 is written as y / 6
2. - 2 - 6
Calculate it :
= -8
hope I helped!
Best regards! :D
What are the numerical measures of each angle
in the diagram?
<1and <3 measure
degrees
<2 and <4 measure
degrees.
(3x - 1)
1
3
2
(2x + 9)
Answer:
angle 1 and 3 are equal by vertically opp. angle
3x-1 = 2x +9
3x-2x = 9+1
x = 10
put the value of x in any equation
3(10)-1 = 29
angle 1 = angle 3 = 29
angle 2 + angle 3 = 180 ° (linear pair)
angle 2 = 180 -29
angle 2 = 149
angle = angle 3 = 149.
Hope it helps
A mail carrier can deliver mail to 36 houses in 30 minutes. Mark wants to determine how many houses the carrier can deliver mail to in 7.5 minutes at this rate. He thinks that to find the answer, he should do the following. 1. First divide 36 houses by 30 minutes to find a unit rate of 1.2 houses per minute. 2. Then multiply 1.2 houses per minute by 7.5 minutes to get 9 houses. Which statement is correct?
Answer:
Mark’s method is correct, because even though it is impossible to deliver mail to 1.2 houses in a minute, 1.2 represents the unit rate of houses per minute.
Step-by-step explanation:
Just took the test.
Both the steps performed by Mark to determine ,the houses the carrier can deliver mail to in 7.5 minutes at this rate is correct .
What is unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
According to the question
A mail carrier can deliver mail = 36 houses
Time taken to deliver mail in 36 houses = 30 minutes
Mark wants to determine , the houses the carrier can deliver mail to in 7.5 minutes at this rate.
By using unitary method :
Step1: First divide 36 houses by 30 minutes to find a unit rate
[tex]rate = \frac{36}{30}[/tex]
rate = 1.2 houses in a minute
Step2: Then multiply the rate to the required time
i.e 1.2 * 7.5 = 9 houses
Hence , Both the steps performed by Mark to determine ,the houses the carrier can deliver mail to in 7.5 minutes at this rate is correct .
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