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Anna007 [38]
3 years ago
12

If vector c = vector b + vector a, under what circumstance does c = b+a ?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
6 0
The sum of the magnitudes will be the magnitude of the sum when the vectors have the same direction.
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A CD's sale price is $14. This is a 4% decrease from its original price. What was the original price?
atroni [7]

Answer:

0.56

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE HELPPPPPPPPP!!!!?????
natta225 [31]

Answers:

  • Mean = 69
  • Median = 69
  • Mode = {68, 70}

===============================================

Explanations:

To get the mean, you add up all of the values and then you divide by N, where N is the number of values in the list. In this case, you'll divide by N = 8.

Adding up all the values gets you 70+68+70+72+68+66+65+73 = 552. Dividing that over 8 then leads to the arithmetic mean of 552/8 = 69

-------

To find the median, you'll first sort the values from smallest to largest. You should have this set {65, 66, 68, 68, 70, 70, 72, 73} after sorting. Next, cross off the smallest and largest values to end up with this smaller set {66, 68, 68, 70, 70, 72}. We do this so we can locate the middle-most item.

Repeat the process of crossing off the smallest and largest items to get {68, 68, 70, 70}. Do so one more time and we get {68,70}.

The midpoint of those two values is (68+70)/2 = 138/2 = 69. The median is 69. The mean and median may not always be the same value.

--------

The mode is the most frequent value. In this case, we have 68 and 70 show up exactly twice for each unique value. This is the most compared to the other unique values that only show up exactly once.

It is possible to have more than one mode, as long those values are more frequent than the rest. We denote the mode as a set, so the mode is {68, 70}

8 0
3 years ago
Grayson biked 45 miles in 3 hours. Maya biked 26 miles in 2 hours. If they both kept a constant speed, how much faster did Grays
pantera1 [17]

Answer:

Grayson biked at a speed of 15 mph. Maya biked at a speed of 13 mph.

Grayson biked 2 mph faster than Maya.

Step-by-step explanation:

45/3 = 15

26/2 = 13

6 0
3 years ago
The pool at "splash around" is open for 14 weeks during the summer. you can swim for $6 a session, or you can buy a membership f
Ratling [72]

Let

x--------> the number of sessions

y-------> the total payment

we know that

without membership:

y=6x --------> equation 1


with membership:

y=100+4x --------> equation 2

using a graph tool------> resolve the system of equations

see the attached figure

the solution is the point (50,300)

that means

For x=50\ sessions

the cost is \$300 in both forms

so

to justify buying the membership

x > 50\ sessions

therefore

<u>the answer is</u>

x > 50\ sessions


3 0
3 years ago
Read 2 more answers
You are going to mix a gallon bucket of window cleaner. The instructions direct you to mix 1 part cleaner to 3 parts water. How
Ira Lisetskai [31]
3 parts water
clean:water=1:3
1:3=xcleaner:1gallon
1/3=xcleaner/1gallon
times 3gallon both sides
1gallon=3xcleaner
divide both sides by 3
1/3 gallon=xcleaner

therfor you need 1/3 gallon of cleaner
7 0
3 years ago
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