Answer:
40
Step-by-step explanation:
Let the number be y
-1/2 × y = -20
y = -20 ÷ -1/2
y = 20 × 2
y = 40
Answer: A. contains a number and a unit
Step-by-step explanation:
Quantitative observations measure the quantity, or the amount, of a certain thing. Therefore they must always use a number value to measure the amounts, and a unit to signify what the amount is for.
-5/8c = 20....multiply both sides by -8/5 (this cancels out the -5/8 on the left
c = 20(-8/5)
c = -160/5
c = - 32
check..
-5/8(-32) = 20
160/8 = 20
20 = 20 (correct)
so c = -32
Answer:
Step-by-step explanation:
Answer:
x
=
π
3
,
2
π
3
,
4
π
3
,
5
π
3
Explanation:
(
sin
x
)
2
=
3
(
cos
x
)
2
(
sin
x
)
2
=
3
(
1
−
(
sin
x
)
2
)
(
sin
x
)
2
=
3
−
3
(
sin
x
)
2
4
(
sin
x
)
2
=
3
(
sin
x
)
2
=
3
4
sin
x
=
±
(
√
3
2
)
x
=
π
3
,
π
−
π
3
,
π
+
π
3
,
(
2
π
)
−
π
3
x
=
π
3
,
2
π
3
,
4
π
3
,
5
π
3
If this was in the region
0
≤
x
≤
2
π
The answer is <span>4 times the 4th root of 5. You would take out a 16, and the fourth root of that is 2 so 2 x 2 = 4 which would be outside the fourth root of 5.
Hope this helps! :)</span>
