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FinnZ [79.3K]
2 years ago
12

What division problem can be represented using the number line?

Mathematics
1 answer:
nexus9112 [7]2 years ago
8 0
A or b depending on wich way your moving
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The price of an Item yesterday was $160. Today, the price rose to $248. Find the percent increase.
Tpy6a [65]

Answer:

jguifutrdduturdrfuy

Step-by-step explanation:

8 0
2 years ago
Slope intercept form for (2,3) and (-1,6)
olga_2 [115]

Answer:

the answer is y=-x+5

Step-by-step explanation:

I hope this helps! :)

Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.

7 0
2 years ago
What is an equation of the line that passes through the points
zubka84 [21]

Answer <u>(assuming it can be in slope-intercept form): </u>

y = x - 5

Step-by-step explanation:

1) First, find the slope of the equation. Use the slope formula, m = \frac{y_2-y_1}{x_2-x_1}, and substitute the x and y values of the given points into it. Then, solve:

m = \frac{(2)-(1)}{(7)-(6)} \\m = \frac{2-1}{7-6} \\m = \frac{1}{1} \\m = 1

2) Now that we know the slope and at least one point the line crosses through, we can write an equation of the line in point-slope form, or y-y_1 = m (x-x_1). Substitute m, x_1, and y_1 for real values.

Since m represents the slope, substitute 1 for it. Since x_1 and y_1 represent the x and y values of a point the line intersects, use any one of the given points (either one is fine, either way the equation will represent the same line) and substitute its x and y values into the equation. (I chose the point (6, 1), as seen below.) Finally, isolate y to put the equation in slope-intercept form.

y-1 = 1(x-6)\\y -1 = x-6\\y = x -5

6 0
2 years ago
The half-life of a certain radioactive substance is 65 days. There are 3.5 g present initially.
zimovet [89]

Answer:

r = 3.5 * .5^(t/65); around 117.5 days

Step-by-step explanation:

r = remaining substance

t = time in days

The half life is 65 day, meaning the .5 must be put to a power of t/65.

The initial substance was 3.5, which we must substitute in.

After using logarithms to solve our new equation, we are left with t=(about)117.5 days for there to be less than 1 gram of substance remaining.

6 0
2 years ago
What is the diameter of circle T?
Ratling [72]

Answer:

Diameter = 16

Step-by-step explanation:

Given

\theta = 72

Sector = \frac{64}{5}\pi

Required

Calculate the diameter

The area of a sector is:

Area = \frac{\theta}{360} * \pi r^2

Substitute values for Area and \theta

\frac{64}{5}\pi = \frac{72}{360} * \pi r^2

Divide both sides by \pi

\frac{64}{5} = \frac{72}{360} * r^2

Make r^2 the subject

\frac{64*360}{5*72} = r^2

\frac{64*360}{360} = r^2

64 = r^2

Take positive square roots of both sides

\sqrt{64} = r

8 = r

r = 8

The diameter is then calculated as:

Diameter = 2r

Diameter = 2*8

Diameter = 16

5 0
2 years ago
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