Answer:
$30.41
Step-by-step explanation:
To find the tax she paid take the total amount times the rate of tax
24.20x.05=1.21
Then add the tax to the amount she paid before tax was added and the tip
$1.21+$24.20+$5=$30.41
So she spent $30.41 at the restaurant
Answer:
math-way is a website where you can ask it math questions and it gives you the correct answer in seconds
Step-by-step explanation:
Answer:40 min
Step-by-step explanation:
5+.10x=3+.15x
-.10. -.10
5= 3+.05x
-3. -3
2=.05x
Divide by .05
X=40
1. Complementary angles are angles whose measures add up to 90°.
46° + 44° = 90°, so the angles are complementary. <em>true
</em>2. sin(x) = cos(90-x). Here's why:
<em />Sine = opposite/hypotenuse
Cosine = adjacent/hypotenuse
The side opposite one angle is the same as the side adjacent to the opposite angle.
Therefore sin(angle) = cos(opposite angle)
These can be expressed as (x) and (90-x), as we will explore in question #3.
Anyways, sin(60°) = cos(90-60°) = cos(30°), so this is <em>true
</em>
3. If we have a right triangle, it must have one right angle measuring 90°.
The angles of a triangle add up to 180°.
The other two angles' measures must add up to 90° because of this. <em>true</em><em />
4. <em>true</em><em>
</em>Use the two sides to find the third (Pythagorean theorem)
<em />Use the Law of Cosines to find each angle.
5. <em>false</em>
We need a side to know how large the triangle is going to be.
This is why triangles that share two angles are similar but not necessarily congruent.
