Answer:
50 black keys
Step-by-step explanation:
for every set of 7 white keys there are 5 black keys
72/7 = 10
so there is a total of 10 full sets of keys
then you have 2 white keys remaining but that doesn't matter because they will just be on the dies and already have a black key next
so this means that you only have to calculate the number of 10 sets of black keys and thats 5 x 10.
hope this helps : )
To solve this equation from the information given above, I ordered it 5x+12=8x. To solve, I subtracted 5x from each side, canceling the 5x to your left, leaving only the number 12. 8x minus 5x equals 3x. Take 3x and divide on both sides. 3x/3x cancels the 3, leaving 12/3 equals 4. Finally, x equals 4.
Answer:
The equation is y=-3x-2
Step-by-step explanation:
The first we need to know is the equation of a line, and it is y=mx+b
where the m is the slope and b is the interception to the y axis
With the information in the question the slope is -3 and the equation thats equal to m. and the y intercept of -2 thats equal to the b value
then y=-3x-2
<span>obtuse angle is greater than 90 degree
acute angle is less than 90 degree</span>
Answer:
D
Step-by-step explanation:
