Answer: true
Explanation:
A graph could use to educate young people regarding their health by charting there blood pressure every hour in seeing the difference in a day
What is the simplified form of the expression square root of -64
we have
![\sqrt[]{-64}](https://tex.z-dn.net/?f=%5Csqrt%5B%5D%7B-64%7D)
Remember that
64=2^6
and
i^2=-1
substitute
![\sqrt[]{-64}=\sqrt[]{(-1)(2^6)}=\sqrt[]{i^2\cdot2^6}=2^3i=8i](https://tex.z-dn.net/?f=%5Csqrt%5B%5D%7B-64%7D%3D%5Csqrt%5B%5D%7B%28-1%29%282%5E6%29%7D%3D%5Csqrt%5B%5D%7Bi%5E2%5Ccdot2%5E6%7D%3D2%5E3i%3D8i)
<h2>option B</h2>
The number is x
it is negative
the square is 28 more than 3 times itself
x²=28+3x
minus (28+3x)
x²-3x-28=0
factor
(x-7)(x+4)=0
set to zero
x-7=0
x=7
this is not the answer because we were told the number was negative
x+4=0
x=-4
correct
the number is -4
test
(-4)²=28+3(-4)
16=28-12
16=16
check
the number is -4
Answer:
Solution (-3, -5)
systems or linear equations
y = x - 2
y = 3x + 4
Step-by-step explanation:
-2,-2 ( 0,4
