For the first two, multiply 13 in place of the X. For example, 4(13)+71 = 123.
Answer:
a
=
146
Step-by-step explanation:
0
.
1
5
+
2
8
.
1
=
5
0
3
/
2
0
+
2
8
.
1
=
5
0
3
/2
0
=
2
1
.
9
Answer:
what numbers?
Step-by-step explanation:
Answer:
720
Step-by-step explanation:
|16+4(3(-6)+(2)|
|20(-18*2)|
|20*-36|
|-720|
720
Answer:
B
Step-by-step explanation:
First calculate BD using sine ratio in Δ BCD and the exact value
sin60° =
, thus
sin60° =
=
=
=
( cross- multiply )
2BD = 12
( divide both sides by 2 )
BD = 6
-----------------------------------------------------------
Calculate AD using the tangent ratio in Δ ABD and the exact value
tan30° =
, thus
tan30° =
=
=
=
( cross- multiply )
AD = 6
( divide both sides by
)
AD = 6 → B