Since you're only given the one vector, I assume you're supposed to find the magnitude of v, or ||v||, using the dot product.
We have
v • v = (-2, -1) • (-2, -1) = (-2)² + (-1)² = 5
so that
||v|| = √(v • v) = √(5)
and the answer is C.
Answer:
C
Step-by-step explanation:
just trust
If asked to multiply 18 by 100 quicky, what is the short cut?
Answer: 18 x 100 = 1,800
Step-by-step explanation:
You take the 100 and you remove the 2 zeros and put them at the back of 18 to get your answer.
A gallon of gasoline cost $3.00 last year, and now costs 5% more. What is the cost of a gallon of gasoline now?
a) 4.50
b) 3.15
c) 3.05
Answer:
B
Step-by-step explanation:
We know that Last year one gallon costs $3.00
and we also know that it costs %5 more this year.
We know that %100 is always the same which is $3.00
Then since we know $3.00 is %100, we can add %5 to %100 to get %105.
Then you multiply 105/100 by 3 then you will get 3.15 which is what B is
So that means our answer is B
David wants to buy a new tablet computer. He looks at a sales ad and sees that a computer store is selling a tablet computer for $499 which is 1/3 off the regular price.
Part A:
Write an equation that represents the situation. Let x = the original cost of the tablet.
Part B:
Find the original cost of the tablet computer.
Answer:
Part A: x÷3=$499
Part B: $1497
Step-by-step explanation:
A: Because to find a fraction of somthing we have to divide, so in this case we divided the original price by 3 to get $499.
B:To find the original price we have to multiply the one third of it ($499) by 3 to get the original amount.
you have read 15 pages of a book. you plan to read an additional 12 pages each night. write the explicit formula to represent the number of pages you will read after n nights.
You live on a triangular piece of land with a base of 121 yards and a height of 80 yards. The area of your land is
square yards.
fill in the blanks
Answer:
the area of the land is 4,840
Step-by-step explanation:
the equation for finding the area of a triangle is base x hight divided by 2
Please help I’ll give you guys brainiest!
Thank youuuuuuu :))
Answer:
look at graph
There are 10 fruits in a basket and 5 of them are apples. Write the ratio in simplest form.
Answer:
10:5= 2:1
Step-by-step explanation:
Hope this helped!! Give brainliest..
Answer:
If the ratio is 10:5 your answer would be 2:1
Step-by-step explanation:
Which expression is equivalent to 3^2 times 3^-5
Answer:
1/27 is the answer..... .......
Juan needs to simplify the fraction LaTeX: \frac{32}{52}32 52. He will need to divide the numerator and the denominator by the greatest common factor. What is the greatest common factor of 32 and 52?
Answer:
4Step-by-step explanation:
Given the expression, 32/52
Juan need to divide the numerator and the denominator by the greatest common factor
For 32;
32 = 8 * 4
For 53
52 = 13 * 4
Find the ratio
32/52 = (8*4)/(13*4)
32/52 = 8/13
Since 4 is common to both factors, Hence the greatest common factor is 4
please help lol easy math
Answer:
a
Step-by-step explanation:
Answer:
Its B and E
Step-by-step explanation: Common sense
What is the slope of the line that passes through the points (1,-6) and (-8,9)
Answer:
Step-by-step explanation:
Slope = (y2-y1)/(x2-x1) = (9+6)/(-8-1) = -15/9
= -5/3
determine how many solutions if correct bainliest
Answer:
No solutions
Step-by-step explanation:
6x+2y=20
-3x-y=-4 (by rewriting)
So
6/-3 = 2/-1≠20/-4
-2=-2≠-5
So it has no solutions
Please help in Expontents! Evaluate 2⋅3)2+52
Answer:
Step-by-step explanation:
the answer to the prob is 64 but the answer to the pic is 0
The simplified form of the given exponent is 27.
What is the exponent?Exponent is defined as the method of expressing large numbers in terms of powers. That means, exponent refers to how many times a number multiplied by itself.
The given expression is 2+5²
Here, 2+25
= 27
Now, 0²=0×0
= 0
Therefore, the simplified form of the given exponent is 27.
To learn more about an exponents visit:
https://brainly.com/question/15993626.
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What is the product of 2x + 3 and 4x ^2- 5x + 6?
Answer:
8x^3 +2x^2-3x+18
Step-by-step explanation:
Someone help me with this question as soon as possible
Answer: A. 4 mph
Step-by-step explanation:
4 x 10 = 40
Answer:
A. is correct
B. is correct
D. is correct
all others are wrong
fill in the blanks.
1.
principal: $500
rate: 4.5%
time: ? years
interest earned: $112.50
new balance: ?
2.
principal: ?
rate: 8%
time: 2 years
interest earned: $108.00
new balance: ?
Answer:
One way of awarding interest is called simple interest. Before we provide the formula used in calculating simple interest, let’s first define some basic terms.
Balance. The balance is the current amount in an account or the current amount owed on a loan.
Principal. The principal is the initial amount invested or borrowed.
Rate. This is the interest rate, usually given as a percent per year.
Time. This is the time duration of the loan or investment. If the interest rate is per year, then the time must be measured in years.
To calculate the simple interest on an account or loan, use the following formula.
Simple Interest
Simple interest is calculated with the formula
I=Prt,
where I is the interest, P is the principal, r is the interest rate, and t is the time.
Step-by-step explanation:
One way of awarding interest is called simple interest. Before we provide the formula used in calculating simple interest, let’s first define some basic terms.
Balance. The balance is the current amount in an account or the current amount owed on a loan.
Principal. The principal is the initial amount invested or borrowed.
Rate. This is the interest rate, usually given as a percent per year.
Time. This is the time duration of the loan or investment. If the interest rate is per year, then the time must be measured in years.
To calculate the simple interest on an account or loan, use the following formula.
Simple Interest
Simple interest is calculated with the formula
I=Prt,
where I is the interest, P is the principal, r is the interest rate, and t is the time.
ABCD is a parallelogram which statements are true
Use the functions
f(x) or g(x) to
answer the
following:
Function f(x) has the equation f(x) = 3x – 4.
Function g(x) has the table of values shown
below.
Which y-intercept
is smaller and how
do you know?
x|g(x)
0] 4
3 5
6 6
9 7
14
Answer:
3 5
Step-by-step explanation:
It just is trust
solve 28m+21=413 thanks!
Answer:
14
Step-by-step explanation:
28m + 21 = 413
28m = 413 - 21
= 392
m = 392/28
= 14
Therefore m is 14 :)
Answer:
14
Step-by-step explanation:
28m+21=413
Subtract both sides by 21
28m=413-21
28m=392
m=14
Mark drew a line to fit the data in a scatter plot as shown What is the equation of the line that Mark drew?
Answer:
Step-by-step explanation:y=1/4 X +6
Answer:
y= 1/4x+ 6
Step-by-step explanation:
Because the line intersects the y-axis at 6, we know the y-intercept, b, is 6.
By counting, we can see the line rises 1 unit for every 4 units it runs to the right. So, the slope, m, of the line is 1/4.
Substitute m and b into the slope-intercept equation, y = mx + b. The equation of the line is y = 1/4 x + 6.
What is another way to write the equation
Answer:
the 2nd one
Step-by-step explanation:
all the other ones don't make 6
at an amusement park, children are charged an entrance fee of $20 plus $3 per ride and adults are charged an entrance fee of $28 plus $4 per ride. Identify your variable with a 'let' statement and write expressions for both children and adults that represent the cost for each group.
Answer:
T=3r+20 for the children and T=4r+28 for the adults
Step-by-step explanation:
Let r equal the amount of rides the person took, let T equal the total cost of the trip
find the slope of the two points:(9,-6) and (7,-3)
Answer:
-3/2
Step-by-step explanation:
The formula for slope is [ y2-y1/x2-x1 ].
-3-(-6)/7-9
3/-2
-3/2
Best of Luck!
Simplify:
(25 +17) - 137 – 13|
OA) 15
OB) 18
OC) 20
OD) 21
Answer:
B.)18
Step-by-step explanation:
25+17=42
|37-13|=|24|
42-|24|=18
Answer:
B
Step-by-step explanation:
u do da parenthesis first
Witch one is a better buy
Answer
8 cans for 9$
MY EXPLANATION...
You get more cans while paying less. You can go for the 6 for 7$ but the better one is the 8 cans. If you add up the 6 for 7$ to the same amount of the 8 cans, you get the same thing. So BOOM! *mic drop*
Write an inequality to
represent “a number is at
most two”
Answer:
x > 2
Step-by-step explanation:
The required inequality to represent “a number is at most two” is x ≤ 2.
What is inequality?Inequality can be defined as the relation of the equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
The expression of a number is at most two, implying that a number cannot be more than 2.
So the inequality that best represents the scenario is given as x ≤ 2.
Thus, the required inequality to represent “a number is at most two” is x ≤ 2.
Learn more about inequality here:
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can some one help me on this and thank u
Answer:
2<x<3
Step-by-step explanation:
the first one
HELP ME PLEASE!!!!!! I need to finish this soon, in order to pass this semester! I’ll give brainiest (I’m not sure how to spell it)
Please help me with this it’s 8 grade
Answer:
The correct answer is option B.
Step-by-step explanation:
Hi.I don't know why I am not getting any brainliest answer and if you are kind enough could you please mark me as the brainliest answer and please follow me also.
What is the slope of the line passing through the points (-1, 19) (-2, -7)??? M=?