Answers
Answer:
b) 2 (x - 4) = 6x
Step-by-step explanation:
equation:
⇒ 2 (x - 4) = 6x
use distributive property:
⇒ 2 (x - 4) = 6x
⇒ 2x - 8 = 6x
subtract x from both sides:
⇒ 2x - 2x - 8 = 6x - 2x
⇒ -8 = 4x
divide both sides by 4:
⇒ [tex]\frac{-8}{4} = \frac{4x}{4}[/tex]
⇒ -2 = x
to check, substitute -2 for x: answer should be the same
2 (x - 4) = 6x
2 (-2 - 4) = 6 x -2
-4 - 8 = -12
-12 = -12
Answer:
i got A and B.
Step-by-step explanation:
for a, subtract 6 from both sides and your new equation should be 2x=-4
the divide -4 by 2 which is -2
for b, you multiply 2 by each number in the parenthesis so your new equation should be 2x-8=6x. then subtract 2x from 6x and get 4x then divide -8 by 4 to get -2. im 100% sure abt A but i was a little confused on B good luck tho
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Step-by-step explanation:
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Answer:
D. cannot be an f(x)=y function.
Step-by-step explanation:
An f(x) = y function has to have a specific property - there can be only one value for the same x - and the value has to be the same every time.
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Question 7 of 10
When you multiply a function by -1, what is the effect on its graph?
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Answers
Answer:
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Select the improper fraction that is not equivalent to the whole number 6
18/3
6/1
54/3
54/9
Answers
Answer:
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Step-by-step explanation:
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Answer:
25
Step-by-step explanation:
Using the Pythagorean theorem, we need to calculate
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625=x^2
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What is the slope of the line perpendicular to a line that contains the points (-5,4) and (-2,4)
Answers
Answer:
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Step-by-step explanation:
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Answer:
x = 17
Step-by-step explanation:
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45 = (x-2)(x-14)
45 = x² - 14x - 2x + 28
simplify:
x² -16x - 17 = 0
(x + 1)(x -17 ) = 0
x = -1 not applicable
x = 17
Proof:
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Answer:
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Step-by-step explanation:
Gr8 job
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Answer:
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Step-by-step explanation:
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Suppose we want to formulate a 95% confidence interval for the population proportion and we would like our margin of error to be not greater than 0.04. We have no history with this characteristic, so we have no idea as to what the proportion might be. Conservatively, what is the minimum sample size we should anticipate using? (NOTE: Round up to the nearest whole number)
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Answer:
The minimum sample size we should anticipate using is 601.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
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In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
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[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
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This means that we use [tex]\pi = 0.5[/tex], which is when the largest sample size will be needed.
95% confidence level
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This is n for which M = 0.04. So
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[tex]0.04\sqrt{n} = 1.96*0.5[/tex]
[tex]\sqrt{n} = \frac{1.96*0.5}{0.04}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96*0.5}{0.04})^2[/tex]
[tex]n = 600.25[/tex]
Rounding up, 601
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Answers
Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
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Step-by-step explanation:
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Answer:
D. on the number line, move 6 units to the left. End at -9, the Dolphin was 9 feet below sea level
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Answers
Answer: [tex]\frac{4}{14}[/tex]
Step-by-step explanation:
Let's take the given equation
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Let's also remember the bottom number (denominator) does not change or go away ever!
So we will subtract the top numbers (numerator) and we will get
[tex]\frac{4}{14}[/tex]
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Answers
Answer:
x =16, y = 151.2
Step-by-step explanation:
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Since angle 3(x-2) , 3/5y and 12 lies on the same straight line and we know what y is,
[tex]3(x - 2) + \frac{3}{5} y + 12 = 180 \\ 3(x - 2) + \frac{3}{5} (151.2) + 12 = 180 \\ 3(x - 2) + 126 + 12 = 180 \\ 3(x - 2) = 180 - 12 6 - 12 \\ 3(x - 2) = 42 \\ x - 2 = \frac{42}{3} \\ x = 14 + 2 \\ =16[/tex]
Identify the vertex of the graph. Tell whether it is a minimum or a maximum.
Answers
Answer:
Vertex = (-1, 2)
Maximum
Step-by-step explanation:
The middle point of the graph is at x coordinate -1 and the point is at the top while the graph slopes down so it is a maximum point and not a minimum point.
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Answer:
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Step-by-step explanation:
the hair looks cool
Raelyn spent $6.00 on butterfly stickers for her bathroom wall. Each sticker cost 1/10 of a dollar. how many stickers did Raeyln but?From the same store,Beth biught 1/4 the number of butterfly stickers Raeyln bought.How many butterfly stickers did Beth buy?
Answers
Answer:
Raeyln bought 60 stickers, Beth bought 15 stickers
Step-by-step explanation:
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Answers
Answer:
C≈9.42m
Using any of this formulas
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Solution:
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Patty purchased rose bushes and geraniums for her yard. Patty spent $206 on 14
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cost of a rose bush. What is the cost of one rose bush?
Answers
9514 1404 393
Answer:
$7
Step-by-step explanation:
Let r and g represent the costs of a rose bush and a geranium, respectively. The given relations are ...
14r +12g = 206
g = 2r -5
Using the second equation to substitute for g in the first equation, we have ...
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38r -60 = 206
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The cost of one rose bush is $7.