This don't make sence i'm in year 5

Step-by-step explanation:

because there are 12 tick marks on the circle, the amount represented between each tick mark is 1/12 of the whole or, in other words, 8.333%. using this we can figure out that 25% chose tents, 41.666% chose hotels, and 33.333% chose caravans. We can then use these numbers to fill out the chart. 72 x 25% can be written 72 x 0.25 = 18 people who chose tents. 72 x 41.666% can be written 72 x 0.41666 = 30 people who chose hotels. 72 x 33.333% can be written 72 x 0.33333 = 24 people who chose caravans

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

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