Answer:
The length of b is 6.7
Step-by-step explanation:
You have way too many unknowns to do much of anything with this. The only way out is to use one of the three geometric means formulas for right triangles. The one that applies here is
and since a + b = 15,
and
Now we look to the right triangle that contains the base b. It has a given angle of 30 degrees, and now we know the side length across from the 30 degrees, we have to think of the trig ratio that relates an angle to the side opposite that angle and to the side adjacent to that angle. That's the tangent ratio. As follows:
and solving for b:
Do this in degree mode in your calculator and you'll get that b = 6.7
Answer:
He determined pounds per dollar by dividing 10 by 25 but wrote the unit rate as a dollar value.
Step-by-step explanation:
Given
Required
Determine Ming's error
Ming's error is from here
He calculated the unit rate as pound per dollar.
So, after calculating the unit rate, the unit should be:
But instead, he solved as:
<em>Hence, (a) is correct</em>
Answer:
11,8,5
Step-by-step explanation:
an=11-3(n-1)
Let n=1
a1 = 11 - 3(1-1)
= 11 -0
=11
Let n=2
a2 = 11-3(2-1)
= 11 -3(1)
= 8
Let n=3
a3 = 11-3(3-1)
= 11 -3(2)
= 11 -6
=5
Answer:
the answer is 42.
Step-by-step explanation:
(8)(5)−8+(2)(5)
=42