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Kaylis [27]
3 years ago
6

I need help what is the surface area of the triangular pyramid in the figure?

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

Answer:

89.4 in²

Step-by-step explanation:

I'm too lazy to explain.

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Lisa and Bill made 60 magnets for a craft fair. They sold about 55% of the magnets. Lisa says they sold about 30 magnets. Bill s
koban [17]

Answer:

Step-by-step explanation:

The total number of magnets that Lisa and Bill made for the craft fair is 60.

They sold about 55% of the magnets. The number of magnets that they sold would be about

55/100 × 60 = 0.55 × 60 = 33

If Lisa says that they sold about 30 magnets, she is correct because if we round off 33 to the nearest ten, it would be 30 magnets.

If Bill says that they sold about 36 magnets, he is wrong because if we round off 36 to the nearest ten, it would be 40 magnets.

5 0
4 years ago
Which expression is equivalent to 1/3(12x+6x-21)
marin [14]

Answer:

6x-7

Step-by-step explanation:

\frac{1}{3} (12x + 6x -21)

break it into pieces

\frac{1}{3}*12x = 4x

\frac{1}{3}*6x=2x

\frac{1}{3} *-21=-7

put it all together

*since there's no negative in front  of the other numbers except 7 they're positive so you add them*

4x + 2x - 7

simplify

6x - 7

4 0
3 years ago
What is the area of a rectangle with vertices at (2, 3), (7, 3), (7, 10), and (2, 10)?
Ainat [17]
Given:
x     y
2     3
7     3
7   10
2   10

It is easier to graph these vertices to avoid confusion. 

Length: basis is the y-values : 10 - 3 = 7 units
Width: basis is the x-values: 7-2 = 5 units

Area = Length * Width
A = 7 units * 5 units
A = 35 units²    Choice D.
7 0
4 years ago
Simon drove for 2 1/2 hours to get from his house to the beach. Simon averaged 55 miles per hour on the trip. What is the distan
Sav [38]

Answer:

The distance from Simon's house to the beach is 137.5 miles

Step-by-step explanation:

we know that

The speed is equal to the ratio of the distance and the time

Let

s ----> the speed in mph

x ----> the distance in miles

y ---> the time in hours

s=\frac{x}{y}

we have

s=55\ mi/h

y=2\frac{1}{2}\ h=\frac{2*2+1}{2}=\frac{5}{2}\ h

substitute in the formula and solve for x

55=\frac{x}{(5/2)}

x=(5/2)55\\x=137.5\ mi

3 0
3 years ago
You have a 5 gallon bucket and a 3 gallon jug, can you measure out exactly 1 gallon? I would assume you could just fill the 3 ga
Anna35 [415]
You fill the 3 gallon jug up completely, then you pour that into the 5 gallon bucket. Then you fill up the 3 gallon jug again, and pour as much as you can into the 5 gallon bucket until it is full. You should then have 1 gallon of liquid left in the 3 gallon jug, and the 5 gallon bucket would be full. I hope that makes sense!
7 0
4 years ago
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