Answer:
DF = 57
Step-by-step explanation:
DE + EF = DF
(4x + 10) + (2x - 1) = 9x - 15
Combine like terms on the left side
6x + 9 = 9x - 15
Subtract 6x on both sides
9 = 3x - 15
Add 15 on both sides
24 = 3x
Divide by 3 on both sides
x = 8
DF = 9x - 15 = 9(8) - 15 = 72 - 15 = 57
Checking:
(4(8) + 10) + (2(8) - 1) = 9(8) - 15
(32 + 10) + (16 - 1) = 72 - 15
58 - 1 = 72 - 15
57 = 57
Answer:
No
Step-by-step explanation:
We have to find that a quadratic polynomial equation with real coefficient can have one real solution and one complex solution.
quadratic equation is given by ax^2+bx+c=0 It can be written as the product of linear factors ax^2+bx+c=a(x-r_1)(x-r_2) Where r_1,r_2 are solutions of the given polynomial equation.
Hope it helps! :]
Answer:
Step-by-step explanation:
We are given the following information in the question:
where, R is the tip speed, T is the speed tip of blade and W is the speed of wind.
We have to find , whem W = 75 km per hour, , T = 150 km per hour
Formula:
Putting all the value, we have:
Answer:
138
Step-by-step explanation:
G + H = 180 {G, H are linear pair}
12x + 6 + 4x - 2 = 180
12x + 4x + 6 - 2 = 180
16x + 4 = 180
16x = 180 - 4
16x = 176
x = 176/16
x = 11
G = 12x + 6
= 12*11 + 6
= 132 + 6
= 138
Answer:
Please find attached pdf
Step-by-step explanation: