Answer:
x= -2
Step-by-step explanation:
7x-3=4x-9
3x-3= -9
3x= -6
x= -2
Answer:
x=-2
Step-by-step explanation:
7x=4x-6
7x-4x=4x-6-4x
3x=-6
3x/3 = -6/3
x=-2
To estimate the mean number of text messages sent by cell-phone users, a researcher chooses a location on a college campus in the city and surveys the first 50 people who walk past. These subjects are asked how many text messages they have sent in the past 24 hours. Is it likely that bias will be present in the sample?
Possible Answers:
A:Because this is a convenience sample, it is likely that the sample results will be unbiased.
B:Because this is a convenience sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
C:Because this is a convenience sample of college students, it is likely that bias is present and that the results will underestimate the mean number of text messages sent.
D:Because this is a voluntary response sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
Answer:
the answer is B :)
Step-by-step explanation:
edgen 2020
Point slope of y=3/4x-7
Answer:
Step-by-step explanation:
Answer:
M= 3/4
Step-by-step explanation:
Take what is before the x and that is you're slope.
A car traveled 180 miles at a constant rate.
Part 1. Complete the table to show the rate at which the car was traveling if it completed the same
distance in each number of hours.
travel time
(hours)
rate of travel (miles per
hour)
5
4.5
3
2.25
Part 2. In the scenario in question 4 write an equation that would make it easy to find the rate at which the car was traveling in miles per hour r, if they traveled for t hours WILL GIVE 80 POINTS 
Answer/Step-by-step explanation:
A. Distance travelled at constant rate = 180 miles
Rate of travel (r) = distance travelled (d) /time (t)
Travel time (hrs) ==> rate of travel (miles/hr)
5 ==> 180/5 = 36
4.5 ==> 180/4.5 = 40
3 ==> 180/3 = 60
2.25 ==> 180/2.25 = 80
B. t = time travelled in hrs,
r = rate (miles/hr)
d = distance travelled = 180
Therefore, rate travelled for t hours would be:
[tex] r = \frac{180}{t} [/tex]
The rate of travel gives the average speed the car will be going if it covers
the 180 miles in different times
Part 1. The table showing the rate at which the car was going is presented as follows;
[tex]\begin{array}{|c|cc|} \underline{\mathbf{Travel \ time, \, t\ (hours)}}&&\underline{\mathbf{Rate \ of \ travel \ (miles \ per \ hour)}}\\&&\\5&&36\\&&\\4.5&&40\\&&\\3&&60\\&&\\2.25&&80\end{array}\right][/tex]
Part 2. To make it easy to find the rate of travel, the following equation may be uses;
[tex]\underline{The \ rate \ of \ travel= \dfrac{180 \ miles}{t \ hours}}[/tex]Reasons:
Part 1.
The given distance travelled by the car = 180 miles
[tex]The \ rate \ of \ travel= \dfrac{Distance \ traveled}{Time \ taken}[/tex]
Therefore, we have;
[tex]\begin{array}{|c|c|c|} \underline{\mathbf{Travel \ time, \, t\ (hours)}}&\underline{\mathbf{Rate=\dfrac{180}{t} } }&\underline{\mathbf{Rate \ of \ travel \ (miles \ per \ hour)}}\\&&\\5&\dfrac{180}{5} = 36&36\\&&\\4.5&\dfrac{180}{4.5} = 40&40\\&&\\3&\dfrac{180}{3} = 60&60\\&&\\2.25&\dfrac{180}{2.25} = 80&80\end{array}\right][/tex]
Part 2.
The equation that would simplify the finding of the car's travel rate is given
by the following expression;
[tex]The \ rate \ of \ travel= \dfrac{Distance \ traveled}{Time \ taken}[/tex]
Where:
The constant distance traveled = 180 miles
The time taken = t
The equation that will make finding the rate of travel, easy in therefore;
[tex]\underline{The \ rate \ of \ travel= \dfrac{180 \ miles}{t \ hours}}[/tex]
Learn more:
https://brainly.com/question/17374284
Please HELP!!
Calculate the slope and in your notebook graph the rates of change for the three cars.
Car B travels 189 miles in 3 hours and 315 miles in 5 hours.
The unit rate is ____ miles per hour
Answer:
Alright
First,do Car B's equation first which is 189 divide 3 and 315 divide 5
Step-by-step explanation:
189 divide 3 is 63
315 divide 5 is 63
The unit rate is 63 miles
And aren't there supposed to to Car A and C?
Alex can run 9 miles in 3 minutes x I need the equation and constant of porportionality
Answer:
k=9/3= 3
Step-by-step explanation:
Mark me the brainliest please
Evaluate the expression if m=4 n=3 and p=2
5m-4n+p=
Answer:
[tex]10[/tex]
Step-by-step explanation:
[tex]5m-4n+p[/tex]
You would substitute in the given values and then combine like terms
[tex]m=4\\n=3\\p=2[/tex]
[tex]5(4)-4(3)+(2) = 20-12+2=10[/tex]
A gardener has ten plants (four tomato, two pepper, and four cucumber) to put in her garden. If she chooses the plants at random, what is the probability that the first one is a tomato plant, and the second one is a cucumber plant?
Answer:
8/45
Step-by-step explanation:
Given that:
Total Number of plants = 10
Number of tomato = 4
Number of pepper = 2
Number of cucumber = 4
If two plants are chosen at random:
Assume it is picked without replacement :
P(first is tomato plant) :
Recall : probability (p) = required outcome / Total possible outcomes
P(first is tomato plant) = 4 / 10 = 2/5
P(second is a cucumber plant) :
Number of plants = (10 - 1) =9 after first pick
P(second is a cucumber plant) = 4 / 9
Hence,
P(first tomato and second cucumber) = 2/5 * 4/9 (independent events)
2/5 * 4/9 = 8/45
Answer:
Also, the answer is 17.78%
Solve for x:
30 = 14 - 4(3 - x)
Answer:
-7
Step-by-step explanation:
First, distribute. 30 = 14 - 12 - 4x
Then, simplify and get the regular numbers one the left side.
30 = 2 - 4x 28 = -4x
Finally, divide both sides by -4 to get x by itself.
-7 = x
Question 1
Which of the following statements is NOT true?
The ratios of the rise to
the run for the triangles
are equivalent
У.
The slope of Āč is ž
2.
B В
-2
-A
The slope of AB is
different than the
slope of BC.
AB has the same slope
as AC.
Answer:
Option (C)
Step-by-step explanation:
Option (A)
Rise-run ratio from the smaller triangle = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]
= [tex]\frac{2}{3}[/tex]
Rise-run ratio from the large triangle = [tex]\frac{4}{6}[/tex]
= [tex]\frac{2}{3}[/tex]
[tex]\frac{2}{3}=\frac{2}{3}[/tex]
Therefore, the ratios of the rise to run are equivalent in both the triangles.
True.
Option (B)
Slope the line AC will be same as segments AB and BC which lie on the same line AC.
Slope of AC = [tex]\frac{2}{3}[/tex]
True.
Option (C)
Since, the segments AB and BC are the parts of line AC
Slope of AB = Slope of BC = Slope AC
Therefore, slope of AB and BC can not be the same.
False.
Option (D)
Since, segment AB is a part line AC, slope of both will be same.
True.
Option (C) is not true.
Answer: The slope of AB is different than the slope of BC
Step-by-step explanation:
That’s the answer
Find the average rate of change of g(x) = 4x + 13 over the interval [-3, 0].
Write your answer as an integer, fraction, or decimal rounded to the nearest tenth. Simplify
any fractions.
Answer:
4
Step-by-step explanation:
7x = -84
Solve the equation
Answer:x = -12
Step-by-step explanation:<!>BRAINLIEST APPERICATED<!>
Answer:
x=−12
Step-by-step explanation:
can you mark me as branlest if right
Can someone please help me pleaseee
Answer:
B. 55
Step-by-step explanation:
The angle measurements on the top are the same as the bottom, so we know the angle next to (x+70) is 55. You then subtract 55 from 180 and you are left with 125. Then you have to subtract 70 to find x, which gives you 55. Therefore, x=55
Who can read my work?
Answer:
kinda hard to understand :)
Step-by-step explanation:
6x - 2 = x + 13 what is the value of x
Answer:
x = 3
Step-by-step explanation:
6x - 2 = x + 13
6x - x = 13 + 2
5x = 15
x = 3
What is the product?
254
X 47
O 11,618
O 11,818
O 11,838
O 11,938
Which statement correctly compares the graph of function g with the graph of function f?
A.
The graph of function g is a vertical stretch of the graph of function f.
B.
The graph of function g is a horizontal shift of the graph of function f to the left.
C.
The graph of function g is a vertical compression of the graph of function f.
D.
The graph of function g is a horizontal shift of the graph of function f to the right.
Answer: It is a vertical COMPRESSION
Step-by-step explanation:
"The graph of function g is a vertical compression of the graph of function f"... I just took the test. It's NOT B. Hope this helps!
Answer:
c
Step-by-step explanation:
If my emplover offers to pay me using a payroll card, do I have to accept
It?
You can answer all if you would like but only a few would be fine as well
A recipe uses 834 cups of milk for every 312 cups of oatmeal.
How many cups of milk are used for each cup of oatmeal
Answer:
Around 2.67
Step-by-step explanation:
Dived 834 by 312 and try to simplify
4X + 2( X+ 7) = 5(X-3) *
Answer:
x= -29
Step-by-step explanation:
hi! let's start off by distributing.
4x+2(x+7)=5(x-3)
4x+(2x+14)=5x-15 combine like terms
6x+14=5x-15 subtract 5x on both sides
x+14=-15 subtract 14 on both sides
x= -29
there's your answer!
Answer:
x = -29
Step-by-step explanation:
4x + 2x +14 = 5x - 15
6x + 14 =5x - 15
x = -29
Please correct me if I'm wrong.
Which numbers are rational?
Answer:
1, 4, 5
Step-by-step explanation:
a rational number is defined as a number that can be written as a fraction. so, 4 and 5 are automatically checked off. 1 also simplifies to plus or minus 11, which is a whole number, meaning it is automatically rational. 2 is not rational because there is no set pattern in the decimal, so it can not be written as a fraction. 3 is the same thing, so it is irrational.
1+1+3+5+9-10+5-39+8=?
Answer:
-17
Step-by-step explanation:
Answer:
-17
Step-by-step explanation:
Use PEMDAS.
Hoped this helped!! <3
Choose the student who wrote the correct inequality.
Vrinda made over 90% of her free throws during the basketball game.
Isidro's work. F = 90.
Kimani's work. V less-than 90.
Tori's work. P greater-than 90.
Answer:
Tori
Step-by-step explanation:
if youre making over 90 percent of your free throws, then any number (P) greater than 90 is the answer
0.2y-14=1/4(4-y) tell each property used to solve the equation
1. You withdraw $17 from your account.
IL A running back loses 17 yards in a game.
III. The temperature rises 17 degrees.
The integer -17 would BEST represent which of these events?
les ))
A)
I only
B)
III only
I and II only
Eliminate
D)
II and III only
Assume the two lines ↔AB and ↔XY intersect as in the diagram below. Which of the following statements are true?
Check all that apply.
Ivanna pumped 6 gallons of water out of her pool each minute for 36 minutes. What was the total change in the amount of water in the pool?
Answer:
Step-by-step explanation:
-6 gallons per minute
there is less water since she is pumping OUT water
-216 gallons are pumped out since -6*36 is -216
Answer:
216 gallons lost
Step-by-step explanation:
6*36=216
per minute=36 mins
LOOK AT THE IMAGE ABOVE PLEASE ANSWER I NEED THIS NOW!! PLEASE SHOW FULL WORK PLEASE
okay well for a) the line is perpendicular meaning that it need to go the opposite way of 2/3x+6 so in the new equation would have a negative value times x. also when you are trying to find a perpendicular line i believe you use the inverse of the slope meaning that you would have -3/2 time x. Then you know that the line goes through (-6,4) so you just replace x with -6, add a varible (for example n) and then set the equation equal to 4 since 4 should be the y value that you get when you plug in 4. so it should look like
(-3/2)-6+n=4 you're doing this so that you can figure out the x intercept. Move the n to the right and subtract 4 from both sides, and then solve the numbers on the left. (-3/2)-6 =9 and then 9-4=5 so the y intercept you get is five. then the new eqaution you shoud have is (-3/2)x-5=y
b.) well the x values are both positive meaning that you subtract so there is a distance of 2 units between then and the y values have a negative number and a positive number meaning you add so there is a distance of 5. The slope should be rise over run so the slope is 5/2 and then you can plug in a value of x to find the y intercept. lets use (6,-3) so
(5/2)6+n=-3. isolate the variable and tadaa you get a y intercept of -18. so the equation for the second one is (5/2)x-18=y
A bucket holds 10 potatoes. Hal removes and cleans 4 potatoes per minute.
Write the explicit definition for the sequence that represents the potatoes left
in the buck after n minutes ?
Answer:
an = 10 – 4(n – 1)
Step-by-step explaination
answer is an = 10 – 4(n – 1)
What is the value of 2|6 + p| - 3p^3 when p = -2?
Answer:p
=
2
,
−
8
7
Decimal Form:
p
=
2
,
−
1.
¯¯¯¯¯¯¯¯¯¯¯¯
142857
Mixed Number Form:
p
=
2
,
−
1
1
7
Step-by-step explanation: