Answer: 5
Step-by-step explanation: -10 + 5 = -5
height of water = 6.25 cm
The volume of the container = 20 × 10 × 10 = 2000 cm³
volume after 750 cm³ is poured out = 2000 - 750 = 1250 cm³
height = 1250/( 20 × 10) = 6.25 cm
Answer:
x = 1/4
Step-by-step explanation: pls brainliest!
Answer:
A.
Step-by-step explanation:
C and D do not create any x² terms when doing the multiplications. so, they are out.
B stands for (a+b)×(a-b) = a² - b².
so, that would give us a "-4" at the end and is not fitting to the "+4" term at the end of the original expression.
that leaves us with A.
let's verify :
(4x+2i)(4x-2i)
it follows the same rule as B :
(a+b)(a-b) = a² - b²
a = 4x
b = 2i
you remember, i = sqrt(-1).
so, we get
(4x)² - (2i)² = 16x² - 4×(sqrt(-1))² = 16x² - 4×(-1) = 16x²+4
bingo !
<span>An exterior angle of a triangle is equal to the sum of the opposite interior angles.
</span>
n = (180 - 133) + (180 - 142)
n = 47 + 38
n = 85
Answer
C. 85