Answer:
if she got 4 questions wrong it would be 12
her score if she got x questions wrong it would be 20-2x
A = 1
b = -5
c = -4
x1 = 5.70
x2 = -0.70
<span>Therefore, the negative real number is -0.70.</span>
Answer:
The number is 112
Step-by-step explanation:
Let the number be 'x'
<h3> x = 112</h3>
Answer:
D) 7/2
Step-by-step explanation:
y=1/3 (ax-2) =>(2,3) so x=2, y=3.
Then,3=1/3 (2a-2)=> 9=2a-2 and a=7/2
So, slope is 7/2
18.432 + 5.55 + 19.3
We can notice that the last number in the process of addition is 19.3 | with 1 decimal place value / 3 significant figures |
It is better to change all values to 1 decimal place value / 3 significant figures
18.432 → 18.4
5.55 → 5.6 ( 5 rounds up )
19.3 → 19.3
Let us add:
18.4 + 5.6 + 19.3 = 43.3
If you add the original numbers, you will get
18.432 + 5.55 + 19.3 = 43.282
43.282 ≈ 43.3
