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Marina CMI [18]
3 years ago
12

Please answer number 1 and 5​

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0

Answer:

5. The sum is allways 7

Step-by-step explanation:

1+6

5.+5

3+4

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6 ft<br> x ft<br> 8 ft<br> 12 ft
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Answer:

576?

Step-by-step explanation:

I think...

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3 years ago
A bicycle has a listed price of $643.95 before tax. If the sales tax rate is 9.5%, find the total cost of the bicycle with sales
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Answer:

705.12525  rounded = $705.10

Step-by-step explanation:

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3 years ago
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PLS HELP I WILL MARK BRAINLEST!!!!!!!!!!
alisha [4.7K]

Answer:

the 3rd one

Step-by-step explanation:

i graphed it mentally and found out the slope was 2 and the y intercept is 1

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3 years ago
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Graph the linear equation. Find three points that solve the equation, then plot on the graph.
Illusion [34]

Answers:

Three points that solve the equation: (1, \frac{19}{4} ) , (2, 5), (3, \frac{21}{4} )

The graph is shown in the attached pictures.

NOTE: The first picture is the graph of the equation along with the plotted points, and the second one shows the work for those three points.

Step-by-step explanation:

1. To graph this equation, an easier way to do it would be to convert to slope-intercept form so we can graph knowing the y-intercept and the slope. Do this by isolating the y on the left side like so:

x-4y=-18\\-4y = -x -18\\y = \frac{-x}{-4} -\frac{18}{-4} \\y = \frac{1}{4} x + \frac{9}{2}

Remember that slope-intercept form is in y = mx + b format, and that m is the slope and b is the y-intercept. With this information, we know that (0, \frac{9}{2}) is the y-intercept and \frac{1}{4} is the slope of this equation. We can plot the point (0, \frac{9}{2}) on the graph, and then use the slope of \frac{1}{4} from there to graph other points and form a line. (When I graphed the line, I didn't include these "other points" so it wasn't confusing to locate which points were the three solutions listed.)

2. Points that solve an equation - or solutions - are also points that the line of the equation intersects. So, what we can do is form a table, plug in some x values into the equation, and solve for a y-value. The x and y values will form a point that is on the graph, thus they are solutions. (Please look at the second picture for work and clarification.) After identifying these points, just plot them on the graph and label them (as shown in the first picture).

8 0
3 years ago
8x + 5y = 27.15<br> what is x and y?
Alex787 [66]

Answer:

Step-by-step explanation:

Simplifying

8x + 5y = 27.15

Solving

8x + 5y = 27.15

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5y' to each side of the equation.

8x + 5y + -5y = 27.15 + -5y

Combine like terms: 5y + -5y = 0

8x + 0 = 27.15 + -5y

8x = 27.15 + -5y

Divide each side by '8'.

x = 3.39375 + -0.625y

Simplifying

x = 3.39375 + -0.625y

6 0
3 years ago
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