All categories

3 years ago

Riley walked 10 1/2 miles in 2 3/4 hours. At this speed how far does Riley walk in one hour?

Mathematics

1 answer:

tia_tia [17]3 years ago

7 0

Answer:3.8181818181818181818181818181818‬

not spam i swear

Step-by-step explanation:

You might be interested in

Math test hard math i will mark as brainlist

ella [17]

Answer:

Surface Area: 155.98 yd²

Volume = 145.02 yd³

Step-by-step explanation:

Ok this might take a while to explain lol. First, to find the surface area of a composite 3D figure, add the areas of each geometric figure making up the composite 3D figure.

So first, we do the area of the triangle:

Equation: height base/2 which is 3 • 5/2 = 7.5

Next, the area of the rectangular prism:

Equation: 2(width • length + height • length + height • width)

Which is, 2·(2.8 · 8 + 4.8 · 8 + 4.8 · 2.8) = 148.48

The next step is to add the areas of the 3D figures together, so

7.5 + 148.48 = 155.98 (Surface area = 155.98 yd²)

Next, we do the volume:

To find the volume of a composite 3D figure, draw any necessary planes to view the figure as basic three dimensional figures, then: add basic figure volumes belonging to the composite shape.

I don't think it's necessary to re-draw anything, so just look at the figures as 3-dimensional shapes and find the volume the normal way.

Equation: 0.5 • base • height • length = 0.5 • 3 • 5 • 5

0.5 • 3 • 5 • 5 = 37.5 (Volume = 37.5)

Then finally, we do the volume of the rectangular prism:

Equation: width • height • length =2.8 · 4.8 · 8

2.8 • 4.8 • 8 = 107.52 (Volume = 107.52)

Finally, add the two volumes together and you are all done :)

37.5 + 107.52 = 145.02 (Volume = 145.02 yd³)

4 0

2 years ago

Read 2 more answers

What is the value of y in the solution to the system of equations?

Nana76 [90]

The value of y is positive 8

4 0

3 years ago

Museum passes cost $5 for adults and $2 for children. One day the museum sold 1820 passes for profit of $6106. How many of each

Mariulka [41]

1,500 children, and 320 adults

2X + 9100 - 5X = 6100
x = 1500 (children passes sold)

1820-1500 = 320 (adult)

Mark brainliest please

4 0

3 years ago

Determine if the table shows a linear or an exponential function

____ [38]

Answer:

The table shows an exponential function

Step-by-step explanation:

Linear vs Exponential Functions

A linear function is written as:

$y=mx+b$

where m and b are constants.

If a table contains a linear function, then for each pair of ordered pairs (x1,y1) and (x2,y2), the value of m must be constant.

The slope can be calculated as:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

An exponential function is written as:

$y=y_o.r^x$

Where r is the ratio and yo is a constant.

If a table contains an exponential function, for two ordered pairs (x1,y1) and (x2,y2), the value of r must be constant.

The ratio can be calculated as:

$\displaystyle r=\sqrt[x2-x1]{\frac{y2}{y1}}$

Calculate the slope for (0,4) and (1,2):

$\displaystyle m=\frac{2-4}{1-0}=-2$

Calculate the slope for (1,2) and (2,1):

$\displaystyle m=\frac{1-2}{2-1}=-1$

Since the slope is not the same, the function is not linear.

Now calculate the ratio for (0,4) and (1,2)

$\displaystyle r=\sqrt[1-0]{\frac{1}{2}}$

The radical of index 1 is simply equal to its argument:

$\displaystyle r=\frac{1}{2}$

Now calculate the ratio for (0,4) and (2,1)

$\displaystyle r=\sqrt[2-0]{\frac{1}{4}}$

$\displaystyle r=\sqrt{\frac{1}{4}}$

$\displaystyle r=\frac{1}{2}$

Testing other points we'll find the same ratio, thus the table is an exponential function

4 0

3 years ago

Read 2 more answers

The graph of an exponential function is shown on the grid.

aliya0001 [1]

Answer:

????

Step-by-step explanation:

Where is the picture?

P.S. I am not answering this question JUST to get points, I will actually revise my answer correctly once you add in a picture! :)

3 0

3 years ago