<h3>
Solution (a):</h3>
<em>~Let's change 9.9² to 10² since we have to estimate.~</em>
<u>We know that:</u>
- 10² = 100
- Given expression: 9.9² × 1.79
<u>Solving the expression:</u>
- 9.9² × 1.79
- => 10² × 1.79
- => 100 × 1.79
- => 179
The estimated value of 9.9² × 1.79 is 179.
<h3>Solution (b):</h3>
<em>~Let's change √97.5 to √100 and 1.96 to 2</em> <em>since we have to estimate.~</em>
<u>We know that:</u>
- √100 = 10
- Given expression: √97.5 ÷ 1.96
<u>Solving the expression:</u>
- √97.5 ÷ 1.96
- => √100 ÷ 2
- => 10 ÷ 2
- => 5
The estimated value of √97.5 ÷ 1.96 is 5.
0.9030 > 0.8736
0.9 > 0.8
so your first option is correct
For the points a and b, you are given the x value of a point on the graph. This means all you have to do is plug in -3 into the equation, and 5 into the equation
This gives -4.3(-3) and -4.3(5)
The points end up being (-3,12.9) and (5,-21.5), final answer
Answer:
1728
Step-by-step explanation:
6² * 8 / 5 * 30
= 36 * 8 / 5 * 30
= 288 / 5 * 30
= 57.6 * 30
= 1728
Yes, because adding 50 and subtracting 50 is equal to 140+50-50.
+50-50=0
Now, you have 140+0=140.
Hope this helped☺☺