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mr Goodwill [35]
3 years ago
12

The ornament below is composed of two congruent square pyramids. Each square pyramid has base side lengths of 2 inches and a hei

ght of 2.5 inches.
What is the volume, in cubic inches, of the ornament?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
5 0

Answer:

The volume of the ornament is 6\frac{2}{3}\ in^{3}

Step-by-step explanation:

we know that

The volume of the ornament is equal to the sum of  the volume of the two congruent square pyramids

so

V=2[\frac{1}{3}b^{2} h]

we have

b=2\ in

h=2.5\ in

substitute

V=2[\frac{1}{3}(2)^{2} (2.5)]

V=\frac{20}{3}\ in^{3}

Convert to mixed number

\frac{20}{3}=\frac{18}{3}+\frac{2}{3}=6\frac{2}{3}\ in^{3}

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4.
Ganezh [65]

Answer:

B) No, they are not congruent.

Step-by-step explanation:

8 0
3 years ago
Graph y &gt; 1 – 3x. <br>can you help me solve it step by step pleases?​
Anna [14]

Step-by-step explanation:

1. You'll have to express the linear inequality into an equality statement (in slope-intercept form, y = mx + b) in order to graph. However, you'd have to use a dashed line because of the inequality symbol, ">"

                                                      y = – 3x + 1

2. Next, you'll have to choose two points to use for graphing. It's always safe to start with the y-intercept, (0, 1).

3. From there, you could use the slope (m = -3/1) and do the "rise over run" technique.

  • The only difference is going 3 units <u>down</u> (rise), and 1 unit to the <u>right</u> (run).
  • You'll also go 3 units <u>up</u> (rise)<u>,</u> 1 unit to the <u>left</u> (run).
  • You need at least 2 points to create a line.

4. Once you create a line, you'll have to choose a test point to see which region of the plane you need to shade. Let's choose the point of origin, (0, 0).

5. Plug these values into the inequality statement to see if it satisfies the inequality:

                   y > 1 – 3x

                   0 > 1 – 3(0)

                   0 > 1 – 0

                   0 > 1 (<u>False statement,</u> because 0 is not greater than 1).

Therefore, you'll have to shade the region where it doesn't contain the point, (0, 0) (shade the right side of the region).

Attached is the screenshots of the graph I created. The first one shows how I did step #3, where I started with plotting the y-intercept, (0, 1) and used the slope to plot other points and create the line. The 2nd screenshot is the final graph, where it shows the shaded region.

Hope this helps :)

             

3 0
3 years ago
Find the value of b?
oee [108]

Answer:

<h2>          b = 37</h2>

Step-by-step explanation:

Opposite angles in parallelogram are equal, so:

3b° = 111°            divide both sides by 3

b° = 37°

  b = 37

4 0
3 years ago
Which is independent and which is dependent.
Arada [10]
Idk if you are talking about independent and dependent variables but if you are then the independent variable is the variable that is changed or controlled and the dependent variable is the variable being tested and measured in a scientific experiment. Hope this helps!!!❤️
3 0
3 years ago
Homer is giving some cookies to each of
Stells [14]

Answer:

7 cookies

Step-by-step explanation:

We have 3 brothers

First , Second, Third

Let the total number cookies be represented by A

1 cookie = 1

Working backwards, we start from the third brother

If we work backwards

It means he gave everything away

We start from the youngest

He was given 1/2 of what was left and 1/2 a cookie

This means,

1/2 + 1/2 = 1

The second brother

He got half of what is left and 1/2 a cookies

Half of what is left from brother

= What the youngest brother got + 1/2 + 1/2 a cookie

= 1 + 1/2 + 1/2

= 1.5 + 1/2

= 2 cookies

For the first brother

He got 1/2 of the cookies + 1/2 cookie

= 1.5 × 2 + 1/2 + 1/2 cookies

= 3 1/2 + 1/2

= 4 cookies

The first brother got 4 cookies

The second brother got 2 cookies

The third broth got 1 cookies

3 0
3 years ago
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