Answer:
855
Step-by-step explanation:
1.9 seconds is 19 tenths, so that means we add using the information given, which is that the ball travels 5 fewer inches every tenth of a second:
Time | Inches traveled
0.1 | 90
0.2 | 85
0.3 | 80
0.4 | 75
0.5 | 70
0.6 | 65
0.7 | 60
0.8 | 55
0.9 | 50
1.0 | 45
1.1 | 40
1.2 | 35
1.3 | 30
1.4 | 25
1.5 | 20
1.6 | 15
1.7 | 10
1.8 | 5
1.9 | 0
90+85+80+75+70+65+60+55+50+45+40+35+30+25+20+15+10+5+0=855
Answer:
600
Step-by-step explanation:
Let's consider this question using algebra.
Imagine the number of bricks in the original pile is 
.
We are told that 
of the bricks are used for a project, meaning that 
has been used, leaving us with 
as our remainder.
Then, we are told that 
of the remainder are used to leave us with 50 bricks. This means that 
of the remainder is left, and this is equal to 50 bricks. This means that the remainder's original amount is equal to 150, because we are told that of the remainder is equal to 50.
So, we know that the remainder is 150, and we also know that the remainder is 
. Let's now use these to form an equation.
Because we know that a quarter of the original amount of bricks is equal to 150, we can multiply both sides of the equation by 4 to get the original amount of bricks in the pile.
So, there were 600 bricks in the original pile.
Answer:
<u>7.74 yd²</u>
Step-by-step explanation:
- Area (shaded) = Area (square) - Area (circle)
- Area (shaded) = 6 x 6 - 3.14 x 3 x 3
- [ Note : radius of circle = 1/2 of the side of the square]
- Area (shaded) = 36 - 28.26
- Area (shaded) = <u>7.74 yd²</u>
Because it is an equation, we know that whatever is on both sides of the equation must be equal. The initial fraction, 9/24, can be further simplified (both numbers made smaller, divided by a common factor). In this case, 9/24 must be divided by something to be equal to 3/y (the y just means we don’t know it’s value yet). If we know that we can divide 9 by 3 to get 3, then we can divide the denominator of the first side of the equation (24) by 3 to get our answer to y.
Basically, in this case we need to find what number to divide 9 by to end up with 3 (that is 3, as 3x3=9) and divide 24 by that number. 24 divided by 3 is 8, as 3x8=24. So, if we know we can reduce 9/24 into 3/8, we can write that as 9/24=3/8. Therefore, y=8.
Hope this helps, good luck!
