To solve Q.15, remember to multiply the first numerical coefficient, in this case 3 to -12, to find the numbers to multiply and get that product. The middle term represents the sum the same two numbers must add to.
For example:
3r^2 - 16r - 7 = 5
3r^2 - 16r - 12 = 0
What 2 numbers multiply to give you -36, and add to give you -16, are -18 and +2, since -18 • 2 = -36, and -18 + 2 = -16.
3r^2 - 18r + 2r - 12 = 0
Factor
3r(r - 6) + 2(r - 6) = 0
(3r + 2)(r - 6) = 0
r = 6
3r + 2 = 0
3r = -2
r = -2/3.
Your 2 solutions for r are -2/3 and 6.
Answer:
The right answer is B, D
Step-by-step explanation:
LCM of 8 and 12 is the smallest number among all common multiples of 8 and 12. The first few multiples of 8 and 12 are (8, 16, 24, 32, . . . ) and (12, 24, 36, 48, 60, . . . ) respectively. There are 3 commonly used methods to find LCM of 8 and 12 - by division method, by prime factorization, and by listing multiples.
There is a 10 square feet difference between both decks.
Answer:
The altitude is 4.1
The area of triangle DEF is 32.8
Step-by-step explanation:
An altitude drawn from angle F to the opposite side of the triangle will intercept length DE.
let the altitude = h
Apply trig-ratio to determine the value of the altitude "h";
The area of ΔDEF using the value of the altitude is calculated as;
Answer:
2.345×0.023
2.345..........3 decimal point
0.023........3 decimal point
2345
× 23 1. first we change it whole number for multiply.
···················· 2.count the decimal point.here 6 decimal points are there.
+ 7 0 3 5 3.we got the answer 53935.here only 5 digits are there.
4 6 9 0 0 4.now we add one zero backside 053935
····························5 . final answer is 0.053935
5 3 9 3 5
···························
answer is =0.053935
Step-by-step explanation: