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2 years ago

Solve y = 7x-3w for x

Mathematics

2 answers:

lorasvet [3.4K]2 years ago

3 0

Y=7x-3w
y+3w=7x
y+3w/7=x

valentinak56 [21]2 years ago

3 0

Answer:

$x=\frac{y+3w}{7}$

Step-by-step explanation:

The given equation is

$y=7x-3w$

We need to solve this equation for x.

Isolate variable x to solve this equation for x.

Add 3w on both sides.

$y+3w=7x-3w+3w$

$y+3w=7x$

Divide both sides by 7.

$\frac{y+3w}{7}=\frac{7x}{7}$

Cancel out common factors.

$\frac{y+3w}{7}=x$

Interchange the sides.

$x=\frac{y+3w}{7}$

Therefore, the formula for x is $x=\frac{y+3w}{7}$ .

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Question 1(Multiple Choice Worth 2 points)

earnstyle [38]

These are 3 questions and 3 answers.

1) Find

$\lim_{x \to \ 2^+} f(x)$

Answer: 4.

Explanation:

The expression means the limit as the function f(x) approaches 2 from the right.

Then, you have to use the function (the line) that comes from the right of 2 and gets as close as you want to x = 2.

That is the line that has the open circle around y = 4, and that is the limit searched.

2) Use the graph to determine the limit if it exists.

Answer:

$\lim_{x \to \ 2^-} f(x) = 3$

$\lim_{x \to \ 2^+} f(x)=-3$

To determine each limit you use the function from the side the value of x is being approached.

Note, that since the two limits are different it is said that the limit of the function as it approaches 2 does not exist.

3)
Answer: - 1

$\lim_{x \to \ 3^-} f(x) = -1$

To find the limit when the function is approached to 3 from the left you follow the line that ends with the open circle at (3, -1).

Therefore, the limit is - 1.

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2 years ago

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You paid $36.20 for a sweater that originally cost $90.50. What percentage of the original price was the sweater on sale for?You

marin [14]

Answer:

32.761 %

Step-by-step explanation:

Percentage is any fraction or ration expressed as a fraction of 100.

Percentage is calculated using formula

If A has to be expressed as percentage of then it can be expressed as

A/B * 100 in percentage form .

For given problem price paid for sweater = $36.20

original price of sweater = $90.50

Problem is to express percentage of price for which sweater was on sale for.

It can be mathematically expressed as

what is 36.20% of 90.5

percentage of price for which sweater was on sale for = (price paid for sweater/original price of sweater ) * 100

It can be mathematically expressed as

what is 36.20% of 90.5

=> ($36.20/$90.50 )* 100= 32.761.

32.761 % of the original price sweater was on sale for.

For better understanding ,It can also be said that that if the original price of sweater had been $100, then you would have got it at $32.761 .

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2 years ago

Round each weight to the nearest whole gram. Then estimate the total weight of the coins in Allen’s hand. 2.500,5.000,2.268,5.67

irina1246 [14]

So the rounded weights would be 3, 5, 2, 6, and 11, as when you round, you look at the number to the right of the one you want to round to. If it's 5 or larger, you add one to the spot you're rounding to, and make the rest of the numbers after into zeroes. If it's below 5, just change the ones after the one you want to round to into zeroes and don't add one.

Then for the estimating of the weight, you would add them together. 3+5+2+6+11. That would equal 27, so the estimate weight is 27 grams.

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2 years ago

Line q will be graphed on the same grid. The only solution to the system of linear equations formed by lines n and q occurs when

bija089 [108]

Answer:

$f(x) = k(x - \frac{3}{2})$

Step-by-step explanation:

Line q will be graphed on the same grid. The only solution to the system of linear equations formed by lines n and q occurs when x = $\frac{3}{2}$ and y = 0.

Now, as x = $\frac{3}{2}$ is a solution of the equation, y = f(x) = 0, so, $(x - \frac{3}{2})$ will be a factor of the linear function y = f(x).

Therefore, we can write the possible equation for the line q will be

$f(x) = k(x - \frac{3}{2})$ . (Where k is any constant} (Answer)

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The tables represent two linear functions in a system. A 2 column table with 5 rows. The first column, x, has the entries, negat

weeeeeb [17]

Answer:

(8,-22)

Step-by-step explanation:

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