So take 4x-2x=4 first combine like terms so now u have 2x=4. now you will isolate the x to find what it equals. divide 2 from both sides so u have x=2. did this help any?
Answer:
x= 6
Step-by-step explanation:
Step 1: Write equation
2x - 5 = 7
Step 2: Solve for <em>x</em>
<u>Add 5 to both sides:</u> 2x = 12
<u>Divide both sides by 2:</u> x= 6
<u />
Step 3: Check
<em>Plug in x to verify if it's a solution.</em>
2(6) - 5 = 7
12 - 5 = 7
7 = 7
Answer: 175
<u>Step-by-step explanation:</u>
To find maximum, we need to find the vertex.
The x-value of the vertex is the number of automobiles that should be made and sold. <em>The y-value is the maximum profit.</em>
P(x) = -10x² + 3500x - 66,000
a=-10, b = 3500, c=-66,000
<u>BONUS:</u>
The maximum profit is: P(x) = -10(175)² + 3500(175) - 66,000
= -300,625 + 612,500 - 66,000
= 245,875
Answer:
Jim's claim is correct
Step-by-step explanation:
Total survey=100 people
Morning exercise=35 people
Afternoon exercise=45 people
Night exercise=20 people
Morning exercise : Total survey
=35 : 100
Afternoon exercise : Total survey
=45 : 100
Night exercise : Total survey
=20 : 100
Jim's claim is correct because in finding the ratio, one has to relate it with the total people involved in the survey.
Tara's claim however seems to relate one variable with two other variables
Example:
35 : 55
Morning exercise : (morning exercise + night exercise)
35 : (35+20)
35 : 55
Answer:
x = 25
Step-by-step explanation:
Given
0.2(x + 5) + 1 = 7 ( subtract 1 from both sides )
0.2(x + 5) = 6 ( divide both sides by 0.2 )
x + 5 = 30 ( subtract 5 from both sides )
x = 25
