4)
Area=(base x height) / 2
area=24 in²
therefore:
(b*3b)/2=24 in²
3b²/2=24 in²
b²=(24*2)/3 in²
b²=16 in²
b=√(16 in²)= 4 in
answer: 4 in
5)
if x=9
x²+z=103
(9)²+z=103
81+z=103
z=103-81=22
if x=-9
(-9)²+z=103
81+z=103
z=103-81=22
Answer: 23
1)
n²-49=0
n²=49
n=⁺₋√49=⁺₋7
Answer: ⁺₋7
2)
x²+64=0
x²=-64
x²=⁺₋√-64 These numbers are not real.
Answer:no solution
3)
area=slide²
slide=+√area
slide=+√(144x²)=12x
answer: 12 x
Answer:
4
Step-by-step explanation:
Q*1/5-t
Q=k/5-t
8=k/5-3
8=k/2
8x2=16
k=16
Q=16/5-t
16=16/5-t
16(5-t)=16
80-16t=16
80-16=16t
64/16=t
t=4
Answer:
93,000,000
Step-by-step explanation:
9.3x10^7
since the 10 has the ^7 on it, you move the decimal over 7 spots.
The LCM of 3/4 4/5 and 2/3 is A, 60.
Answer:
10 square meters will have a standard deviation of 1.897.
Step-by-step explanation:
Standard deviation for n instances of a variable:
If the standard deviation for one instance of a variable is
, for n instances of the variable, the standard deviation will be of 
The standard deviation of the number of flaws per square yard is 0.6
This means that 
For the 10 square yards will a standard deviation of
, so:

10 square meters will have a standard deviation of 1.897.