Answer:
-11
Step-by-step explanation:
-6y-5y=-11y/y=-11
Average speed is 18.6 kilometer per hour
<u><em>Solution:</em></u>
Given that,
To visit the sites, Nathan's family drove 6.8 km, 9.8 km, 20.3 km, and 46.8 km
They drove for 4.5 hour
To find: average speed
<em><u>The average speed is given by formula:</u></em>
Here, total distance = 6.8 + 9.8 + 20.3 + 46.8 = 83.7 km
Total time taken = 4.5 hour
<em><u>Substituting the values in formula,</u></em>
Thus average speed is 18.6 kilometer per hour
Answer:
D
Step-by-step explanation:
If it was 6 degrees cooler on Monday than it was on Sunday, but also having Tuesday be 4 degrees warmer than Monday, Wednesday would have to be 2 degrees cooler than Tuesday because it is a number that would comply with the limits
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10.If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
2.16 • 10^-1
Hello from MrBillDoesMath!
Answer: (sin(@)) ^2 + (cos(@)) ^2 = 1 for all angles @.
Discussion
;
Take a point, say in the first quadrant. on a unit circle (circle with radius 1) Let that point by (x,y). The from the Pythagorean theorem.
x^2 + y^2 = r^2 or as r = 1
x^2 + y ^2 = 1 ("Equation 1")
If you drop a line from (x,y) perpendicular to the x axis you find that
y = r [email protected] or y = [email protected] as r =1.
and
x = r [email protected] or x = [email protected] as r = 1
(Look at the triangle formed by the radius, the perpendicular line and the positive x axis). Substitute these x and y values in Equation 1 above. This gives
([email protected])^2 + ([email protected])^2 =1
which is true for all angles. This is a key "pattern" or identity that you should commit to long term memory!
Regards, MrB