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Fantom [35]
2 years ago
7

Ajay wraps a gift box in the shape of a triangular pyramid. The figure below shows a

Mathematics
1 answer:
Arisa [49]2 years ago
5 0

Ajay wraps a gift box in the shape of a triangular pyramid. The amount

of wrapping paper he uses is 173.2 square inches.

<h3>How to calculate the surface area of a triangular pyramid?</h3>

The formula for calculating the total surface area is expressed as:

Area = 4(area of triangle)

The area of the triangle

A = 0.5(8.66)(10)

A = 43.3 square inches

The total surface area will be

TSA = 4(43.3)

TSA = 173.2 square inches

Hence the amount of wrapping paper Ajay uses is 173.2 square inches

Learn more on the total surface area here:

brainly.com/question/1297098

#SPJ1

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I need help can someone help me (:
vladimir2022 [97]
Hey there!

To solve the first problem, I've found it easiest to solve the equation for, say, values –2 through +2 and create a table of values for you to begin graphing this function. You may need to do more depending on the equation itself. 

Some points are: (–2, 0.75), (–1, 1.5), (0, 3), (1, 6) and (2, 12). You can check which graph matches up with these points the closest to get your answer of D. 

To solve the second problem, you'll need to use the distance equation.

x1 = –4, y1 = 3
x2 = –1, y2 = 1 
  ___________________
√ (x2–x1)^2 + (y2–y1)^2
  _________________
√ (–1–(–4)^2 + (1–3)^2
  _______________
√ (–1+4)^2 + (–2)^2
  ____________
√ (3)^2 + (–2)^2
  _____
√ 9 + 4
  ___
√ 13, making your answer D

For your third question, I always just counted the number of units the point was from the line of reflection. You'll count twice diagonally towards the line from point C for this one, staying on the "crosshairs" of the graph. All you need to do then is count two diagonal units along the same line, then you'll get your answer of (2, 6), or D. 

For your final question, A and B are immediately out, since they won't be parallel to the 4x equation. You'll need to solve both of your remaining equations for y with 2 plugged in for x; whichever one equals 7 will be your answer. In this case, it will be D. 

Hope this helped you out! :-)
3 0
4 years ago
Solve the equation for<br> x 3/4(x+21) = 10.5 <br> x =
MrRa [10]
<h3>✍️ Answer:</h3><h3>x=-\frac{294}{13}</h3>

✽✽✽✽

\frac{x\cdot \:3}{4\left(x+21\right)}=10.5

\mathrm{Multiply\:both\:sides\:by\:}4\left(x+21\right)

\frac{x\cdot \:3}{4\left(x+21\right)}\cdot \:4\left(x+21\right)=10.5\cdot \:4\left(x+21\right)

3x=42\left(x+21\right)

3x=42x+882

\mathrm{Subtract\:}42x\mathrm{\:from\:both\:sides}

3x-42x=42x+882-42x

-39x=882

\mathrm{Divide\:both\:sides\:by\:}-39

\frac{-39x}{-39}=\frac{882}{-39}

x=-\frac{294}{13}

❅❅❅❅❅❅❅❅❅❅

<h3>hope it helps...</h3><h3>have a great day!!</h3>
4 0
3 years ago
Can someone please explain what solving in scientific notation is?
nikitadnepr [17]

Step-by-step explanation:

Scientific notation is a way of expressing numbers that are too big or too small to be conveniently written in decimal form.

For example, instead of writing 0.0000000056, we write 5.6 x, 10^-9

5 0
3 years ago
Read 2 more answers
Can someone help plz?
nikitadnepr [17]

Answer:

The answer is: Yes

Step-by-step explanation:

1. Substitute the 2's for the x's.

2. Substitute the 3's for the y's

3. You get 4-9= -5

4. Do the same for the second problem.

5. 8-12= -4

6. Both problems are correct once the substitutions are made, therefore the answer is "Yes".

7 0
3 years ago
Read 2 more answers
Can someone help me? It's urgent and thank you!
Alex_Xolod [135]

Answer:

15.2%

Step-by-step explanation:

There are 12 marbles in total and there are 5 red marbles, so the probability of getting a red marble is 5/12. There are now 11 marbles and there are 4 blue marbles. So the probability of getting a blue marble is 4/11.

You multiply these 2 values together.

5/12 * 4/11 = 20/132 = 0.1515

This is about 15.2%

5 0
4 years ago
Read 2 more answers
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