Quinn went to the coffee shop traveling 9mph and returned home traveling 15mph. The total trip took I hours. How long did Quinn travel at each speed?
Answer:
to the shop : 5/8 of an hour
back home : 3/8 of an hour
Step-by-step explanation:
We use the relationship between distance travelled, speed and time given by the formula:
speed = distance / time
We know that the distance from home to the coffee shop is D (same for trip back)
We also know the two speeds in one direction 9 mph and in the other 15 mph
then we can find the times t1 (to the coffee shop) and back (t2) by using the equations:
D = 9 * t1
D = 15 * t2
1 = t1 + t2
We set the two distances equal to have:
9 * t1 = 15 * t2
then t1 = 15 * t2 / 9 = 5 t2 / 3
and use this to substitute for t1 in the last equation:
t1 + t2 = 5 t2/3 + t2 = 1
8 t2 /3 = 1
then t2 = 3/8 of an hour
and therefore t1 must be 1 - t2 = 5/8 of an hour
3. Which expression is NOT equivalent to 216? *
Answer: 8x62 i found this so here is why this is correct hope it helps!
( I am a middle schooler btw)
Step-by-step explanation: 8 x 60 = 480 + 2 =482 so 8 x 62 is correct
What is the value of x?
Answer:
x = 5.4
Step-by-step explanation:
3/x = 4/7.2
cross-multiply:
4x = 21.6
x = 5.4
32 (23 + 4),
What is the value of the expression
22
A.
10
B. 15
C. 19
D. 27
Answer:
Its neither the only value im getting is 864
Answer:
b
Step-by-step explanation:
Who am I? If you divide me by 8 and subtract 12 the result is -1
Answer:
88
Step-by-step explanation:
88 ÷ 8 = 11
and 11 - 12 = -1
Answer:
88
Step-by-step explanation:
We can turn this into an algebraic equation. So...
x/8-12=-1 Add 12 to both sides.
+12 +12
x/8=11 Multiply by 8 on both sides.
*8 *8
x=88
The number is 88.
Hope this helps!! Have a nice day C:
need help to find slope
Answer:
the line goes through the points (-4, 0) and (0, 3)and slope is rise over run so the line goes up 3 and to the right 4 so you put 3 over 4, the slope is 3/4
A plane was cruising at a height of 31,000 feet. Then it descended at a rate of 550 feet per minute. What height will the plane be at after 10 minutes?
Pls help
Answer:
25,500
Step-by-step explanation:
550 * 10 = 5500
31,000 - 5500 = 25,500
Help................
ok I can help
we have to fill it in first - so the question is :
-4 + 6(-3)
so now we just solve it
-4 + -18
because 6 times - 3 is -18
then I'm pretty sure u just add -4 and -18 together witch is..
-22
srry I forgot it said -3 but yes this is the answer
A bag of flour weighs 2.5 kilograms. Of 1 bag makes 5 loaves of bread, how many grams of flour are needed for each loaf
Answer:
500 grams
Step-by-step explanation:
2.5 kg = 5 loaves
1 loaf = 2.5/5 = 0.5 kg
0.5 kg = 500 grams
1,8,5,4,1,8,5,4
Mean:
Median:
Mode:
Answer:
1. Mean = 55.8
Median = 23
Mode = None
2. Mean = 2.1
Median = 1.4
Mode 0.5
3. Mean = 4.5
Median = 4.5
Mode = 1,4, 5, 8
4. Mean 68
Median 58
Mode = 0
Step-by-step explanation:
Mean = 17 + 25 + 23 + 200 + 14 / 5 = 279/5 = 55.8
Median= Because its odd you put them in order 17, 14, 23, 25, 200 = 23 because it is the middle number. Mode = None
2. Mean = 0.5 + 1.4 + 3.0 + 7.0 + 0.5 +1.8 + 0.5 = 14.7 = 14.7/7 = 2.1
Median = because it is odd you put them in order 0.5, 0.5, 0.5, 1.4, 1.8, 3.0, 7.0 = 1.4 The mode is 0.5 because it repeats three times
3. Mean = 1 + 8 + 5 + 4 + 1 + 8 + 5 + 4 = 36/8 =4.5
Median = Because its even you divide by the two middle numbers = 1, 1, 4,4, 5, 5 , 8 , 8 = 4+5 = 9/2 = 4.5 Mode = 1, 4, 5, and 8 are the numbers that are repeated most often.
Mean = 0+78+99+58+65+0+47+38+227 = 68 Median, Because there is an odd number you get the odd number from the middle. 0, 0, 38, 47, 58, 65, 78, 99, 227 = 58 Mode = 0 because it repeats more often.
Sorry I kept commenting I'm new to this platform!
The temperature was -13 °F and then fell 5 degrees.
What was the final temperature?
Answer:
-8
Step-by-step explanation:
The final temperature was -18 °F if it decreased by 5 degrees.
What is the addition operation?The addition operation in mathematics adds values on each side of the operator.
For example 4 + 2 = 6
The temperature was -13 °F and then dropped 5 degrees.
As per the question, we have data as follows:
The initial temperature = -13 °F
The changed temperature = -5 °F (negative sign indicates temp dropped)
Final temperature = initial temperature + changed temperature
Final temperature = -13 °F + (-5 °F)
Final temperature = -13 °F - 5 °F
Apply the addition operation, and we get
Final temperature = -18 °F
Therefore, the final temperature was -18 °F.
Learn more about Addition operations here:
brainly.com/question/25834626
#SPJ2
3) Adventure Land charges $30 for an adult and $40 for a kid. How many 20 points
adult tickets and kids tickets were sold, if 689 tickets were sold for a total
of $24,670? Let a = the number of adult tickets sold and c = the number
of children tickets sold *
Answer:
zoo 777
Step-by-step explanation:
Help me please!!!!!!
Answer:
BStep-by-step explanation:
:)))))))))))))))))))-43/50 as a decimal number
Answer:
-0.86
Step-by-step explanation:
True or False:
In a regular decagon, the measure of one interior angle is 144 degrees.
Answer:
True
Step-by-step explanation:
Pqrs is a rhombus find the value of x and y
Answer:
x = 90 degrees
y = 28 degrees
Step-by-step explanation:
x: all the angles in the middle are 90
y: 180 - 90 - 62 = 28
This is urgent what is the answer to this hint: pemdas(45-5)÷5+6²
Answer:
[tex] (45 - 5) \div 5 + {6}^{2} \\ 40 \div 5 + {6}^{2} \\ 8 + {6}^{2} \\ 8 + 36 \\ 44 \: answer [/tex]
what is the answer:
7-24 x 53 +41 -36 =
Can somebody please help me with this question and provide an explanation?
Answer:
first of all the formula
y = mx+c
where m is slope and c is y-intercept.
now substitute the values-
y = 2x - 5
(for the slope here is 2 and the part where the line intercepts y axis is -5
therefore
y = 2x-5
Answer:
I have a question for you how are not going to help others but want help yourself sounds lazy to me...
find the limit if it exists lim x→0 sqrtx+7-sqrt7 over x
Answer:
[tex] \frac{1}{ 2\sqrt{7} } [/tex]
Step-by-step explanation:
[tex] \lim_{x\to 0} \frac{ \sqrt{x + 7} - \sqrt{7} }{x} \\ \\ = \lim_{x\to 0} \frac{( \sqrt{x + 7} - \sqrt{7}) }{x} \times \frac{( \sqrt{x + 7} + \sqrt{7}) }{( \sqrt{x + 7} + \sqrt{7}) } \\ \\ = \lim_{x\to 0} \frac{( \sqrt{x + 7} )^{2} - (\sqrt{7})^{2} }{x( \sqrt{x + 7} + \sqrt{7})} \\ \\ = \lim_{x\to 0} \frac{( {x + 7} - {7}) }{x( \sqrt{x + 7} + \sqrt{7})} \\ \\ = \lim_{x\to 0} \frac{ {\cancel x}}{\cancel x( \sqrt{x + 7} + \sqrt{7})} \\ \\ = \lim_{x\to 0} \frac{ {1}}{\sqrt{x + 7} + \sqrt{7}} \\ \\ = \frac{1}{ \sqrt{0 + 7} + \sqrt{7} } \\ \\ = \frac{1}{ \sqrt{7} + \sqrt{7} } \\ \\ = \frac{1}{ 2\sqrt{7} } [/tex]
Lin and Diego both ran for 10 seconds, each at their own constant speed. Lin
ran 40 meters and Diego ran 55 meters.
Han ran 100 meters in 20 seconds at a constant speed. Is this speed faster,
slower, or the same as Lin's? Diego's?
Answer:
faster then the other one
What is the remainder when x4–5x3+ 3x2–2x + 7 is divided by x –1?
A) 4
B) 7
C) 10
D) 18
Answer:
-107
Step-by-step explanation:
x4-5^3+ 3^2-2x + 7
2x−109/x−1
1 2 −109
2
second step
1 2 -109
1 * 2 = 2
2 (-109) + 2 = -107
Coefficients are 2, and -107
Therefore the quotient is 2 and the remainder is -107
Figure WXYZ has the coordinates W(5, 3), X(10, 3),
Y(12, -1), and 2(3, -1). The figure is reflected over the
x-axis.
What are the coordinates of WXYZ"?
A. W'(-5, -3), X'(-10, -3), Y'(-12, 1), Z'(-3, 1)
B. W'(-5, 3), X'(-10, 3), Y'(-12, -1), Z'(-3, -1)
C. W'(3, 5), X'(3, 10), Y'(-1, 12), Z'(-1, 3)
D. W'(5, 13), X'(10, -3), Y'(12, 1), Z'(3, 1)
Answer:
W'(3,5),X'(3,10),Y'(-1,12),Z'(-1,3)
Step-by-step explanation:
since it is reflected over the x.axis
the coordinates will rotate
i.e (x,y)=(y,x)
Answer for 25 points
Answer:
think its 4 and 6
Step-by-step explanation:
Please open each section so i can answer
Louis wants to carpet the rectangular floor of his basement. The basement has an area of 4,335 square feet. The width of the basement is
3/5 its length. What is the length of Louis's basement? The length is blank feet.
Answer:
The length of Louis's basement is 85 feet.
Step-by-step explanation:
The area of the basement, A = 4,335 square feet
The width of the basement is 3/5 its length.
Let length be l.
Width = (3/5)l
The area of the basement is given by :
[tex]A=l\times b\\\\4,335 =l\times \dfrac{3}{5}l\\\\4,335 =\dfrac{3}{5}l^2\\\\l^2=\dfrac{4,335 \times 5}{3}\\\\l=\sqrt{\dfrac{4335\times5}{3}}\\\\l=85\ ft[/tex]
So, the length of Louis's basement is 85 feet.
there are 84 girls in grade 3.the boys are twice the numbers of girls. how many pupils are there in all in grade 3?draw a diagram.
Answer: 252
Step-by-step explanation:
You just multiply 84 by two and then ad another 84.
the ratio 8:12 is equivalent to y:9. what is the value of y?
Answer:
y=8*9/12=6
Hope it helps
Have a good day
You just write the expression as-
12/9=z
8z is your answer
To find z
12/9=1.3
8 x 1.3
10.4
hope it helps
Hown below are the top 15 market research firms in the United States in 2014 according to the AMA Gold Top 50 Report. Compute the mean, median, P50, P40, P85, Q1, Q3, range, and the interquartile range on these data.
Company Sales ($ millions)
Nielson Holdings N.V. $3,194.3
Kantar 952.6
IMS Health Inc. 935.0
Ipsos 574.1
Westat Inc. 563.7
Information Resources, Inc. 504.0
GfK USA 334.5 comScore Inc. 202.7
The NPD Group Inc. 202.3
Symphony Health Solutions 196.5
J.D. Power and Associates 172.9
ICF International Inc. 172.0
Abt SRBI Inc. 155.7
Maritz Research 138.9
dunnhumbyUSA LLC 121.5
Solution :
Number Values (X) [tex]$\sum (X_i - \bar X)^2$[/tex]
1 121.5 193494.4144
2 138.9 178489.3504
3 155.7 164576.2624
4 172 151616.7844
5 172.9 150916.7104
6 196.5 133137.4144
7 202.3 128938.4464
8 202.7 128651.3424
9 334.5 51474.5344
10 504 3292.4644
11 563.7 5.3824
12 574.1 161.7984
13 935 139591.9044
14 952.6 153053.0884
15 3194.3 6932267.726
Total 8420.7 8509667.624
Mean [tex]$\bar X = \sum \frac{X_i}{n}$[/tex]
[tex]$=\frac{8420.7}{15}$[/tex]
= 561.38
Median :
[tex]$Q_2 = \left(\frac{1}{2}n+\frac{1}{2}\right)^{th}$[/tex]value
[tex]$ = \left(\frac{1}{2}\times 15+\frac{1}{2}\right)^{th}$[/tex]value
= 202.7
Percentile = [tex]$\left(\frac{P}{100} \times n + \frac{1}{2}\right)^{th}$[/tex] value
= [tex]$\left(\frac{50}{100} \times 15 + \frac{1}{2}\right)^{th}$[/tex] value
= 202.7
Percentile = [tex]$\left(\frac{P}{100} \times n + \frac{1}{2}\right)^{th}$[/tex] value
= [tex]$\left(\frac{40}{100} \times 15 + \frac{1}{2}\right)^{th}$[/tex] value
= 198.82
Percentile = [tex]$\left(\frac{P}{100} \times n + \frac{1}{2}\right)^{th}$[/tex] value
= [tex]$\left(\frac{90}{100} \times 15 + \frac{1}{2}\right)^{th}$[/tex] value
= 1849.28
[tex]$Q_1 = \left(\frac{1}{4}n+\frac{1}{4}\right)^{th}$[/tex]value
[tex]$ = \left(\frac{1}{4}\times 15+\frac{1}{4}\right)^{th}$[/tex]value
= 172
[tex]$Q_3 = \left(\frac{3}{4}n+\frac{3}{4}\right)^{th}$[/tex]value
[tex]$ = \left(\frac{3}{4}\times 15+\frac{3}{4}\right)^{th}$[/tex]value
= 574.1
Therefore, the range = highest value - lowest value
= 3194.3 - 121.5
= 3072.8
Now the interquartile range = [tex]$Q_3-Q_1$[/tex]
= 574.1 - 172
= 402.1
Type SSS, SAS, ASA, SAA, or HL to
justify why the two larger triangles are
congruent.
8 cm
8 cm
9514 1404 393
Answer:
ASA
Step-by-step explanation:
The shared angle, the marked angle, and the marked sides between those angles are congruent. That is, you have congruent Angle, Side, Angle, so the ASA postulate applies.
Find the mean of first five prime numbers.
Answer:
5.6
Step-by-step explanation:
First five prime numbers are 2, 3, 5, 7 and 11. The mean or the average formula is = Sum/number of items = (2 + 3 + 5 + 7 +11)/5 = 5.6