(25/20 -1)*100% = 25%
From 20 to 25 is an increase of 25%.
Answer:
C, (12, -1)
Step-by-step explanation:
x - 2y = 14
x + 3y =9
Add 2y to both sides
x = 14 +2y
Substitute this into the second equation and solve
14 + 2y + 3y = 9
5y = 9 - 14 = -5
5y = -5
y = - 1
(you don't need to do this step because there is only one equation with y=-1, but just in case...)
Plug y into the first equation:
x - 2(-1) = 14
x - (-2)= x+2
x + 2 =14
x =12
Therefore, the answer is (12, -1)
The answer is C
Answer:
½ and 14/28
Step-by-step explanation:
If a pair of ratio forms a proportion, they are equal.
First pair of ratios:
4/5 =10/13
Convert to the least common denominator (4 × 13)/65 = (10 × 5)/65
52/65 ≠ 50/65
The first pair of ratios is <em>not</em> a proportion.
Second pair of ratios:
7/8 =15/18
Convert to the least common denominator (7 × 9)/72 = (15 × 4)/72
63/72 ≠ 60/72
The second pair of ratios is <em>not</em> a proportion.
<em>Third pair of ratios:
</em>
½ =14/28
Convert to the least common denominator (1 ×14)/28 = 14/28
14/28 = 14/28
½ = 14/28
½ and 14/28 form a proportion.
360 seconds ..
6 times 60=360
They are similar which means same shape but different size
