Hello! I can help you! First things first, because they are both the same angles on opposite sides, let's set this up in the form of an equation and solve for "x". It would be set up like this:
2x + 20 = 3x - 30
You see up top that it says 2(x + 10). What you would do is multiply what's in the parenthesis by 2, in order to get 2x + 20. Then put the equal sign and write 3x - 30. Subtract 3x from both sides to get -1x + 20 = -30. Subtract 20 from both sides to get -1x = -50. Divide each side by -1 to isolate the "x". In this case, because you are dividing a negative number by a negative number, your quotient will be positive. -50/-1 is 50. Let's plug in the value as "x" and see if it works. 50 * 2 is 100. 100 + 20 is 120. 50 * 3 is 150. 150 - 30 is 120. 120 = 120. There. x = 50.
This is simple. It is 7 factorial, or 7!. This just means 7*6*5*4*3*2*1, which is 5040.
Answer: 75(b-4)=450
Step-by-step explanation: She doesn't have to pay for four books, so the number of books she is going to have to pay is b-4. Each of these books costs $75. To conclude, b-4 books cost 75(b-4).
Hope this helps you out! ☺
Answer:
0
Step-by-step explanation:
Anything times 0 is 0
Answer:
3.52 × 10⁸
Step-by-step explanation:
Scientific notation is written in: <em>Number that is in the ones place × 10^power</em>.
Here, the number is <em>3.52</em>, since 3 has the largest placement.
The power on the 10 should be the number of 0's on 352,000,000/3.52. That is <em>100,000,000</em>. That number has <em>8 0's, so the power is to the 8th</em>.
Putting that together, this number in scientific notation in 3.52 × 10⁸.
