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2 years ago

The y-intercept of the line whose equation is x - y = 7 is

2 answers:

7 0

X- y = 7
⇒ y -x = -7 (multiply by -1 on both sides).
⇒ y +(x-x)= -7 +x
⇒ y= x-7

The y-intercept of the line is y= x-7.

Hope this helps~

Delvig [45]2 years ago

3 0

X-y=7
so you have to rewrite the equation in the form of mx+b=y
so ... x-y=7
-x -x
-y=7-x then simplify
-y(-y)=-(7-x) multiply both sides by -1
y=-7+x
which is the same y= x-7
y=x+-7

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Find the area of a square with a side measure of 3x − 6 feet. Question 5 options: 9x2−36x+36 sq. ft. 9x2−6 sq. ft. 9x2+36x+36 sq

Sergeeva-Olga [200]

Answer:

9x^2 - 36x + 36 sq. ft. (the first option).

Step-by-step explanation:

Area of a square of side d = d^2.

So area of this square = (3x - 6)^2

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= 3x(3x - 6) - 6(3x - 6)

= 9x^2 - 18x - 18x + 36

= 9x^2 - 36x + 36 sq ft.

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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Answer:

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2 years ago

It takes William 45 minutes to weed the garden. It takes his younger sister May 75 minutes to do the same job. If they work toge

marshall27 [118]

Answer:

B. 28 minutes

Step-by-step explanation:

According to the given statement,

William weeds the whole garden in 45 minutes, then in one minute he will weed 1/45 of the garden

and

similarly, 1/75 of the garden in one minute.

When they both will work together, they will weed (1/45+1/75) of the garden in one minute

Solving the equation:

= $\frac{1}{45}+ \frac{1}{75}\\= \frac{75+45}{3375}\\ =\frac{120}{3375}\\ = 0.036$

Garden weeded in one minute by both = 0.036

So, number of minutes to weed whole garden = 1/0.036

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2 years ago

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Marina CMI [18]

The concept of historical cost in accounting involves valuing business resources at their purchase price. This is further explained below.

<h3>What is the historical cost?</h3>

Generally, historical cost is a value of measure used in accounting that records the value of an asset on the balance sheet at its original cost when purchased by the firm.

In conclusion, valuing business resources at their purchase price is what historical cost is about.