Answer:
11
-4.3
Step-by-step explanation:
-14-(-25)
-14+25 subracting a is adding
25-14=11
-12.5-(-8.2)
-12.5+8.2
8.2-12.5=-4.3
Answer:
24.997 cm
Step-by-step explanation:
Find the diameter:
7(2) = 14 cm
Find the circumference:
C = 
C = 
C = 43.988
Divide the circumference by 4:
43.988/4 = 10.997
(This is the length of the curved side)
Add length to the other 2 sides:
7 + 7 + 10.997 = 24.997
Answer:
2200 baseball cards
Step-by-step explanation:
Let <em>x</em> and <em>y</em> be the required amounts of the 35% and 60% acid solutions, respectively.
<em>x</em> liters of 35% acid solution contains 0.35<em>x</em> L of acid.
<em>y</em> liters of 80% acid solution contains 0.80<em>y</em> L of acid.
Together, a combined (<em>x</em> + <em>y</em>) L of mixed solutions contains (0.35<em>x</em> + 0.80<em>y</em>) L of acid.
You want to end up with 60 L of 65% acid solution, which means
<em>x</em> + <em>y</em> = 60
0.35<em>x</em> + 0.80<em>y</em> = 0.65 × 60 = 39
Solve for <em>x</em> and <em>y</em> :
<em>y</em> = 60 - <em>x</em>
0.35<em>x</em> + 0.80 (60 - <em>x</em>) = 39
0.35<em>x</em> + 48 - 0.80<em>x</em> = 39
0.45<em>x</em> = 9
<em>x</em> = 20
<em>y</em> = 40
Answer:
27°
Step-by-step explanation:
Triangles when all three sides are added up make up 180°. So In this problem you would need to add up 80 and 73 (153) then subtracting that number by 180 (27) to find the value/measurement of <1.
