Can you please provide a clear picture so I can try to help.That one is kinda blurry
So, let's say the soft drink equals y and the sandwich equals x.
x + y = 9.9
The sandwich costs 3.5 times as much as the soft drink
x = 3.5y
Therefore, we can replace x with 3.5y since they're the same thing
3.5y + y = 9.9 <-- That's the equation :)
Answer:
10
Step-by-step explanation:
If we plug in any negative number as x, the result will always be greater than 4, which rules out answers A and B
lets try plugging in 4 as x to test answer C:
2(8-4)
2(4)= 8
8 is greater than 4, therefore C is wrong.
Lets try 10 as X (answer D):
2(8-10)
2(-2)
-4
We know that -4 is less than 4, therefore it makes the inequality true! :)
If 6a = 5b then the ratio of 2a : 7b is 5 : 21
<h3><u>
Solution:</u></h3>
Given that 6a = 5b
We have to find the ratio of 2a : 7b
Let us first solve the given expression and find values of a and b
6a = 5b
So we have found that a = 5 and b = 6
<em><u>Finding ratio of 2a : 7b</u></em>
2a : 7b = 2(5) : 7(6)
2a : 7b = 10 : 42
On simplifying to lowest terms,
2a : 7b = 5 : 21
Thus the ratio of 2a : 7b is 5 : 21
Assumption:
△RST is congruent to △TXY
The vertices therefore correspond as follows.
From △TXY to △RST:
T <--> R
X <--> S
Y <--> T
Hence:
TX <--> RS
TY <--> RT
XY <--> ST