Answer:
9.7
Step-by-step explanation:
Here is the correct question with picture attached: Lines DE and AB intersect at point C
What is the value of x?
(2x+2)
°
(16x+3)°
Now, finding the value of x.
∠ACE+∠ECB= 180° (∵ They form a straight line angle)
∴
Opeing the parethesis.
⇒
⇒
subtracting 5 on both side.
⇒
cross multiplying the number
⇒x=
∴x= 9.7
Answer:
3.6
Step-by-step explanation:
-8(4+9x)=7(-2-11x)
-32-72x=-14-77x
-32+5x=-14
5x=18
x=3.6
Answer:
False
Step-by-step explanation:
the answer is false because
year 1 to 2 is $18
year 2 to 3 is $17
year 3 to 4 is $18
year 4 to 5 is $17
false because simple interest always has the same money not a pattern
Here is one example of when you would use the friendly number strategy to subtract.
42 - 18
We will turn the 18 into a friendly number, which is going to be 20.
(42 + 2) - (18 + 3)
44 - 20
Now it is easier to subtract 44 - 20 than it is 42 -18. With 42 - 18 we would have to barrow whereas with 44 -20 we do not have to barrow and we can do it in our head easier and makes it faster.
Answer:
C. 3/4
Step-by-step explanation:
Using the SOH CAH TOA identity;
tan theta = opposite/adjacent
From the diagram
Opposite = x
Adjacent = 12
tan <B = x/12
Since cot <B = 1/tan <B
cot <B = 12/x
Get x using pythagoras theorem
x² = 20²-12²
x² = 400 -144
x² = 256
x = 16
Hence cot <B = 12/16
cot <B =3/4