We just use the sinus rule to calculate this
a / sin alpha = b / sin beta
Alpha is the 90 degree angle from the wall to the floor
beta is the angle from the top of the ladder to the wall,
wich is 90 degrees - 75 degrees (triangle has 180 degrees angles, one is 90 degrees), so beta = 15 degrees
14 foot / sin 90 = b / sin 15
sin 90 = 1
we move the sin15 over to the other side
14 foot x sin 15 = b
b = 3.62 foot
Answer:
136
Step-by-step explanation:
2(x + 7) = 36 |use distributive property
(2⋅x)+(2⋅7)=36
2·x+2·7=36
2x + 14 = 36
2(x + 7) = 36 |:2
x + 7 = 18
Answer (bold expressions).
Answer:
I think this is the answer I hope this can help you
Step-by-step explanation:
1) 3 gallons=36 miles
16 gallons=?
so it will be


or you can do like this
1 gallons=12 miles so if 16 gallons multiply with 12 it will be 192
2)2 hours=$28.50
? =$99.75
so it will be


so it will be 7 hours
3) 4.5 km= 5 hours
? =60 hours


the answer will be 54 kilometer
4) $9.60=3cm
$22.40=?


7 cm
5) $145.50=50 miles
$552.90=?


190 miles
6)$239.85=359
$1.95=?


2.92 liter
7)
220=60 hours
?=3 hours


11 miles
8)1 gallon= $17.50
8.2 gallon=?

$143.50
9)7cm=2 minute
? =13 minute


45.5 cm
10)17=4 acres
? =244 acre


1037 kg
11) 1= $2.85
4.4=?

$12.54
12)
$2.50=5 oz
$32.50=?


65 oz
The answer is B, 57 degrees. You can tell angle C is 57 degrees since 180-123 is 57 and both angles add up to 180 on a straight line. Then since the lines are parallel, angle a is 55 degrees because of alternate interior angle theorem. Then, a triangle’s angles add up to 180 so to figure out angle d, you do: 180- (55 + 57) which gives you 68. Since 55 + angle b + angle d = 180, you have to do 180 - (68+55) = 57 degrees. Hope this helps!