Answer:
Step-by-step explanation:
we are given that these two fractions are equal. however, 20/r is just given in numerators and denominators that are four times as large, even though it is still equal to 5/7. we can tell this because 20 is 4 times larger than 5, which means that R must be 4 times larger than 7, right? YES. so we take 7*4 to get 28.
Answer:
A. A reflection over the x-axis and a vertical stretch.
Step-by-step explanation:
Let 
, to obtain 
, we need to use the following two operations:
(i) Vertical stretch
, 
(ii) Reflection over the x-axis
Let prove both transformations in 
:
Step 1 - Vertical stretch (
)
Step 2 - Reflection over the x-axis
Hence, correct answer is A.
Answer:
x=4
Step-by-step explanation:
−2(4 − 2x) + 3x = 2x + 2(5 + x) − 6 (<u>DISTRUBUTE</u>)
-8+4x+3x=2x+10+2x-6 <u>(SIMPLFY</u>)
-8+7x=4x+4 (<u>SUBTRACTE 4X FROM BOTH SIDES</u>)
3x-8=4 (<u>ADDD 8 TO BOTH SIDES</u>)
3x=12 (<u>DIVIDE MY 3 ON BOTH SIDES</u>)
x=4
