Answer:
20.5 cm
21.5 cm
Step-by-step explanation:
Length is 21 cm correct to 2 significant figures
<u>Find lower and upper bounds</u>
- The lower bound is the smallest value that will round up to the approximate value.
- The upper bound is the smallest value that will round up to the next approximate value.
<u>As per above definition:</u>
- Lower bound is 20.5 cm rounded to 21
- Upper bound is 21.5 cm rounded to 22
X= 60 and y = 120
As we can tell x and y add up to 180 as angles on a line are equal to 180 and we know the value of x as angles in a triangle add up to 180
Hi there!
We can use long division to find the other roots of p(x).
We know that x + 1 is a factor, so:
Set up:
Find how many times that the first term in the divisor goes into the first of the dividend. Subtract from like terms.
x² - x - 6
x + 1 | x³ + 0x² - 7x - 6
x³ + x²
0 - x² - 7x
- x² - x
0 - 6x - 6
-6x - 6
0 0
Therefore, x² - x - 6 is another factor. We can factor this further:
Find two numbers that add up to -1 and multiply into -6. We get:
-3, 2
(x - 3)(x + 2)
The entire polynomial factored is:
(x -3)(x + 2)(x + 1)
3x+21-12=8x-28
collect the like terms
3x-8x=-28(21-12=9)
-5x=-28-9
-5x=-37
x=7.4
Answer:
The only options equivalent to 2:9 are B and C. A ratio is a comparison between two or more numbers
Step-by-step explanation: