Answer:
Answer A
Step-by-step explanation:
Angle A = 180 - 26 - 90 (90 right angle)
The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.
cos
(
A)=
adj/hyp
Cos (26) = a / 13
a = 13* Cos (26)
a= 11.7
Find the last side of the triangle using the Pythagorean theorem.

Answer:
.25, .012, .001
Step-by-step explanation:
Divide the length by 1000
25÷1000= .25
12÷1000= .012
1÷1000= .001
(a) Find the value of x.
Sum of interior in a triangle = 180
So m<BAC + m<ABC + m<BCA = 180
4x + 10 + 5x + 18 + 3x - 16 = 180
12x + 12 = 180
12x = 168
x = 14
(b) Find the measure of <3.
<3 + <BCA = 180
<BCA = 3x - 16 = 3(14) - 16 = 26°
So
<3 = 180 - <BCA
<3 = 180 - 26
<3 = 154°
Answer: 36
Step-by-step explanation: To find the least common multiple or <em>lcm</em> of 12 and 18, begin by listing the first few multiples of each number.
<em>Multiples of 12</em>
1 × 12 = 12
2 × 12 = 24
3 × 12 = 36
Notice that we skipped 0 × 12 in our list of multiples. That's because 0 × 6 is 0 and our least common multiple can not be 0.
When listing the multiples of 18, it's a good idea to keep an eye on the list of multiples for 12 so that we will notice when we find a least common multiple.
<em>Multiples of 18</em>
1 × 18 = 18 ← is not multiple of 12
2 × 18 = 36 ← is a multiple of 12
Notice that we can stop here because all other multiples that we find will be greater 36. So the least common multiple of 12 and 18 is 36.