Answer:
30
Step-by-step explanation:
For a = <xa, ya> and b = <xb, yb>, the dot product is the sum of products ...
a·b = (xa)(xb) + (ya)(yb)
Substituting the given information, you have ...
a·b = 5·4 + 2·5 = 20 + 10
a·b = 30
_____
Some graphing calculators can do such math. There are also dot product calculators available on the Internet. If you have quite a few of these to calculate, you can put the appropriate formula into a spreadsheet.
(-10) + 3 = -(10 - 3) = -7
10 - 3 = 7
-7 ≠ 7
<em><u>FALSE</u></em>
Answer:

Step-by-step explanation:
Let's solve your inequality step-by-step.
3x+4>−18
Step 1: Subtract 4 from both sides.
3x+4−4>−18−4
3x>−22
Step 2: Divide both sides by 3.
3x
3
>
−22
3
x>
−22
3
Answer:
Step-by-step explanation:
n o The angle terminates in Quadrant II In degrees, the reference angle for the given angle is 30°.