X + y = 26 3x + y = 56 Please help me! Show Working Please
2 answers:
Step-by-step explanation:
(X + y = 26) (-3)
3x + y = 56
____________
- 3 x - 3y = - <u>78</u><u> </u><u> </u><u>Note</u>:cross <em>3x</em> and<em>-3x</em> from both equations (they're opposite)
3x +y =56
____________
-3y +y = - 78 +56
-2y = - 22
____________
So we replace y in eq 2: (to obtain x)
3x + 11 =56
3x =45
X =15
You might be interested in
Answer:
24.03 units (nearest hundredth)
Step-by-step explanation:
The distance between B and A is: AB = AH + HB
We have been given AH, so we just need to find the measure of HB.
First, find the angle AOH using tan trig ratio:
where:
is the angle
- O is the side opposite the angle
- A is the side adjacent the angle
Given:
- O = AH = 8
- A = OH = 19.80
∠BOA = ∠BOH + ∠AOH
⇒ ∠BOH = ∠BOA - ∠AOH
⇒ ∠BOH = 61° - 22.00069835°
= 38.99930165°
Now we can find HB by again using the tan trig ratio:
Given:
- O = HB
- A = OH = 19.80
Substituting given values:
Therefore:
AB = AH + BH
⇒ AB = 8 + 16.03332427
= 24.03 units (nearest hundredth)
