First one is 1 x 10^6
second is 2 x 10^8
third one is 157 times
Answer:
We need to use the sine of 17 degrees to find x. Our proportion is sin(17 degrees)=x/9.3. Multiply both sides by 9.3 and we get 9.3sin(17)=x. Using a calculator, we get about 2.7.
Answer:
4.5
Step-by-step explanation:
0.05(50+40) = 0.05 x 50 + 0.05 x 40 = 2.5 + 2 = 4.5
i hope this helped, and if it did, please mark this as brainliest! thanks
Answer:
There are 156 concrete blocks available to make a wall.
The bottom three rows will all have the same number of blocks.
The next six rows will each have two blocks fewer than the row below it.
Let there be x blocks in the first 3 rows.
As per the situation, the expression becomes:
![3x+x-2+x-4+x-6+x-8+x-10+x-12=156](https://tex.z-dn.net/?f=3x%2Bx-2%2Bx-4%2Bx-6%2Bx-8%2Bx-10%2Bx-12%3D156)
=> ![9x-42=156](https://tex.z-dn.net/?f=9x-42%3D156)
=> ![9x=156+42=198](https://tex.z-dn.net/?f=9x%3D156%2B42%3D198)
=>
x =22
So, there are 22 blocks in the first 3 rows.
And in each successive rows we have : 20,18,16,14,12 and 10
If we total all, we get 156.
![(22\times3)+20+18+16+14+12+10](https://tex.z-dn.net/?f=%2822%5Ctimes3%29%2B20%2B18%2B16%2B14%2B12%2B10)
![66+20+18+16+14+12+10=156](https://tex.z-dn.net/?f=66%2B20%2B18%2B16%2B14%2B12%2B10%3D156)
Multiply 8 and 12 to get a answer of 96. 96 will be your answer!