Answer:
x = -6
Step-by-step explanation:
5x² + 60x + 180 = 0
5 x 180 = 900
you need 2 numbers that multiplies into 900 and adds into 60. these numbers are 30 and 30. now we can rewrite it
5x² + 30x + 30x + 180 = 0.
split it in half and factorise
5x(x + 6) + 30(x + 6) = 0
this means the brackets are:
(5x + 30)(x + 6) = 0
5x + 30 = 0
5x = -30
x = -6
x + 6 = 0
x = -6
therefore, x = -6.
Probably (-5,-8) I’m pretty sure it’s correct
35. is c : square root of 64 is 8 and the square root of 8 can be simplifed to 4 x 2, square root of 4 is 2
36 is d : Denominator of the fraction represents what it is being rooted by and the numerator is what the regular number is squared by.
Answer:
48 65 and 23
Step-by-step explanation:
48 add 65 subtrat
23
How to find IQR:
Find the median of the lower and upper half of your data. Subtract Q3 - Q1 to determine the IQR.
1st Quartile- 125
3rd quartile- 242.5
Median-192
Interquartile Range -117.5 (242.5 - 125)