Answer:
D
Step-by-step explanation:
Answer: 5
Step-by-step explanation:
First you would add in the y. 2x+2(12-3x)=4
Then you would multiply the 2 into (12-3x) . 2x + 24 - 6x = 4
After that you will subtract the 24 and move it to the other side. 2x -6x = -20
Then you put together like terms. -4 = -20
Then divide to get 5.
R=5
r(r-1)=30
r²+r=30
5²+5=30
5²=30-5
5²=25
5=5
Black box = r x 2
5 x 2 = 10
Black part of card is 10 sq cm.
Hi,
<span>Miranda
bought some apples and oranges at the store for fruit salad. Owen
bought three times as many apples and twice as many oranges. Miranda has
5 fruits in her bag, but Owen has 12 fruits in his bag. How many apples
did Miranda purchase?
</span>
<span></span>Derive two simultaneous equations a + o = 5 and 3a + 2o = 12
make a = 5 - o substitute in 2nd equation and you find o = 3
Miranda buys 2 apples.
Height = sqrt(5^2 - 4^2) = sqrt(9) = 3
Area = length x height
Area = 8 x 3 = 24m^2