Answer:
The answer is C.
Step-by-step explanation:
I just did the test and the answer was C
Answer:
184
Step-by-step explanation:
Answer:
The equation that represents the relation is x = 3y - 5, where x is the number of plates and y is the number of cups
Step-by-step explanation:
<em>To solve this question chose a variable represents the number of the plates and another variable represents the number of the cups</em>
Assume that the number of plates is x and the number of cups is y
∵ The number of plates = x
∵ The number of cups = y
∵ The number of plates is 5 less than 3 times the number of cups
→ That means x is less than 3 times y by 5
∵ 3 times y = 3 × y = 3y
∵ x is less than 3y by 5
→ Remember is means equal and "less" means subtract 5 from 3y
∴ x = 3y - 5
The equation that represents the relation is x = 3y - 5, where x is the number of plates and y is the number of cups
Answer: 4.0 atmospheres
Step-by-step explanation:
As the depth(meters) increases so does the Pressure (atmospheres) look at the chart to help you get a clear understanding:
Depth(meters) Pressure(atmospheres)
14 2.4
15 2.5
16 2.6
17 2.7
18 2.8
19 2.9
20 3.0
21 3.1
22 3.2
23 3.3
24 3.4
25 3.5
26. 3.6
27 3.7
28 3.8
29 3.9
30 4.0
If xy=0 then assume taht x and/or y=0
remember differnce of 2 perfect squares
a^2-b^2=(a-b)(a+b)
factor
6x^2-24=0
6(x^2-4)=0
6(x^2-2^2)=0
6(x-2)(x+2)=0
set to zero
x-2=0
x=2
x+2=0
x=-2
x=2 and -2
A is answer