Robert, George, and Edwin are required to make 1650 articles in the ratio 5 : 8 : 9.How many articles are Robert, George and Edwin supposed to make respectively? At a sale, a fan is offered at 32% less than its normal selling price. Calculate the sale price of the fan which has a normal price of $145.

A rectangular piece of land measures 4.5 km long and 2.5 km wide.
(a) Calculate the ratio of
(i) its width to its length
(ii) its length to its perimeter

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

-4

step-by-step explanation:

answer: it is d

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15