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bonufazy [111]
3 years ago
13

−15 ÷ (−3) work the problem out.

Mathematics
1 answer:
Elodia [21]3 years ago
5 0

Answer:

5

Step-by-step explanation:

-15/(-3)

When dividing a negative by a negative, the negatives cancel out, so you're left with 15/3.

15/3 is 5.

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What is 5.46÷ 0.25 (show ur work long divison)
Licemer1 [7]
5.46/0.25= 21.84 hope it helps

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2 years ago
Pls help! 50 POINTS!
nirvana33 [79]

Answer:

See below.

Step-by-step explanation:

1)

So we have the equation:

2x+3y=1470

To change into the slope-intercept form, we need to isolate the y-variable. Thus, subtract 2x from both sides:

(2x+3y)-2x=(1470)-2x

The left side cancels:

3y=1470-2x

Now, divide both sides by 3. The left side cancels:

(3y)/3=(-2x+1470)/3\\y=-\frac{2}{3} x+490

The slope-intercept form is:

y=mx+b

Where m is the slope and b is the y-intercept.

Thus, the slope is -2/3 and the y-intercept is 490.

2)

So, since we already know the y-intercept is 490, plot a point at (0,490).

The slope is too small to use. Thus, multiply the fraction by 100. It is now (-200/300). This means that we move <em>down</em> 200 for every 300 (recall that the slope means rise over run. Thus, we move down 200 for every 300 to the right). Thus, another possible point would be (0+300,490-200) or (300,290). Plot that. Then, connect them.

3)

To write in in function notation, simply substitute the y-variable for the function notation. Our independent variable here is x so we'll use that.

y=-\frac{2}{3}x+490\\ f(x)=-\frac{2}{3}x+490

This means that for every x sandwiches made, there is f(x) wraps made for the total sum to be $1,470.

For example, if 105 sandwiches were made, then f(105)=-2/3(105)+490=420 wraps were made for the total profit to be $1,470.

4)

Please refer to the attached graph.

5)

First, since the total profit has now increased, the graph above and to the right of the old graph. This is because Sal needs to sell more sandwiches and wraps. Likewise, because of this, the x- and y-intercepts will also be different. Nevertheless, if converted into the slope-intercept equation, the slope will remain the same.

5 0
3 years ago
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Why will the percent of change always be represented by a positive number
Colt1911 [192]
Because if it is a decrease in change, it will be told as a "fall" in change ;')

6 0
3 years ago
Brainliest to CORRECT answer!
Anastasy [175]

Answer:

A

Step-by-step explanation:

8 0
2 years ago
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a circle has a center at (3,5) the point (3,8) is on the circle what is the circumference of the circle to the nearest tenth of
kogti [31]
You need to use the distance formula to find the radius of the circle.

d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2} \\  \\ d = \sqrt{(3-3)^2 + (8-5)^2} \\  \\ d = \sqrt{0^2+3^2} \\  \\ d = \sqrt{9} = 3

The radius is 3.

The circumference is 2 \pi r

= 6\pi \\  \\ =18.8
3 0
3 years ago
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