1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mamont248 [21]
3 years ago
12

Find a • b. u = <8,7>, v=<9,7>

Mathematics
1 answer:
drek231 [11]3 years ago
7 0

Answer:

\large\boxed{\vec{u}\circ\vec{v}=121}

Step-by-step explanation:

\vec{a}=,\ \vec{b}=\\\\\vec{a}\circ\vec{b}=x_ax_b+y_ay_b\\\\====================================\\\\\vec{u}=,\ \vec{v}=\\\\\vec{u}\circ\vec{v}=(8)(9)+(7)(7)=72+49=121

You might be interested in
In parallelogram WXYZ, what is CY?<br> CY=___ ft
dangina [55]
<span>The correct answer is 11 ft.

Explanation:
The diagonals of a parallelogram bisect each other. This means that the portion marked x+4 is the same length as the portion marked 2x-7; this gives us the equation x+4=2x-7.

Subtract x from each side:
x+4-x=2x-7-x
4=x-7.

Add 7 to both sides:
4+7=x-7+7
11=x</span>
6 0
3 years ago
Read 2 more answers
Did I do this correct???
kondor19780726 [428]
The answer is actually D. Since 2.5 is a side of each tiny block, there is 3 sides that you are going to multiply together. There is 5,2 and 4 because we are multiplying the length,width and side. So the length is 2.5*5=12.5 which was correct. The width is 2.5*4=10 which you had but you crossed it out. Then lastly you are looking for the side of the shape. 2.5*2=5. Now that I have everything I just need to multiply everything together. 12.5*10*5=625 in³. I hope this helped you! 
6 0
2 years ago
Jesus spent 1/4 of his money on a pizza and 1/4 of his money on salad. What fraction of his money did Jesus spend on dinner?
katrin [286]

Answer:

2/4 of his money was spent on dinner

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
HELP ME AND ANSWER THIS IK ITS -1 BUT ITS AN MULTIPLE CHOICE!! please don't guess thank you :) and I'll mark you as Brainlest :D
ankoles [38]
1 and 0 would also work for this inequality!
7 0
2 years ago
Read 2 more answers
I don't understand plz help​
Rasek [7]

Answer:

The equation that represent x, the height of the sign is;

2a = 3x

Step-by-step explanation:

Given that the area of the triangular yield is A square feet

and it has a base length of 3 feet.

also the height is represented by x;

b = 3ft \\ h = x

Recall that the area of a triangle can be written as;

a =  \frac{1}{2} bh

substituting the given;

a =  \frac{1}{2}  \times 3 \times x \\   a =  \frac{3}{2} x \\ 2a = 3x

Therefore, the equation that represent x, the height of the sign is;

2a = 3x

8 0
2 years ago
Read 2 more answers
Other questions:
  • If the price for 12 cookies is 42 dollars how much would if cost for 1 cookie
    8·1 answer
  • Justin and George bought some baked goods. Justin purchased 5 cookies for x dollars each and 4 doughnuts for y dollars each and
    13·2 answers
  • Which matrix does not have an inverse?
    11·1 answer
  • Explain how to find the exact value of cot 5pi/3 , including quadrant location.
    12·1 answer
  • Charlotte spent 1/2 of the day shopping at the mall. She spent 1/4 of this time trying on jeans. What fraction of the days did C
    5·2 answers
  • Find the area of the figure. The area is square inches.<br><br>please help!​
    5·1 answer
  • Which of the following is a true statement regarding the information shown in the pie chart?
    6·1 answer
  • 2. If the diameter of a circle is 2V10, what is the area<br> of the circle.
    10·1 answer
  • Help please ill give extra to brainliest<br> 13d +8= -1<br><br> d=?
    9·2 answers
  • Find the mode of the set of numbers (6,12,9,9,6,12,3,3,12,12)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!