The difference of a number b and 8 is 15

Mathematics

1 answer:

garri49 [273]3 years ago

4 0

can u show me a shorter verison

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Bill lent some money to his two brothers he wrote down the mount so he would not forget the list shows his younger brother with-

pav-90 [236]

C. The older brother payed bill $12 .75 and the younger brother does not owe him any money

8 0

3 years ago

Approximately how much more quickly (in mph) does a pilot traveling 400 mph and rising at an angle of 30o gain altitude versus a

REY [17]

We can find the height of the altitude by the ratio of sin. See my attachment.
sin of angle = side in front of the angle / hypotenuse
sin x = height/distance

If the two pilot is rising in an hour, then the first distance is 400 miles, the second distance is 300 miles.

Find the height of first pilot
height/distance = sin x
height/400 = sin 30°
height = sin 30° × 400
height = 1/2 × 400
height = 200

Find the height of second pilot
height/distance = sin x
height/300 = sin 40°
height = sin 40° × 300
height = 0.642 × 300
height = 192

So the first pilot traveling 400 mph with 30° is more quickly to reach high altitude than the second pilot traveling 300 mph with 40°

3 0

3 years ago

Line WY is an altitude in triangle WXZ. If ΔYWZ ~ ΔYXW, what is true about XWZ? XWZ is an obtuse angle. XWZ is a right angle. XW

topjm [15]

In triangle WXZ,

Line WY is an altitude (as shown in the attached picture)
Now, it is given that:
If ΔYWZ ~ ΔYXW
∠WXY = ∠WZY

Then, we can also conclude
∠WYX = ∠WYZ = 90°....(1) (because WY is the altitude)

Now, in any triangle, the sum of all the three angles is 180.

In triangle, WXY, ∠WYX = 90° (From 1)
Therefore, WXY + XWY = 90°

Similarly, in WZY.

Hence, we conclude that XWZ is a right angle.