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PilotLPTM [1.2K]
3 years ago
9

What is the surface area of a triangular pyramid if each face has an area of 80 m2?

Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0
There are 4 sides in a triangular pyramid. So just multiply 80m2 by 4
80×4=24
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The most popular items at a bakery are its raspberry scones and its lemon poppy
Umnica [9.8K]

The system of equations x+y=46 and 15x+9y=396 could be used to find the number of boxes of each item sold.

Step-by-step explanation:

Given,

Cost of one box of raspberry scones = $15.00

Cost of one box of lemon poppy seed muffins = $9.00

Total boxes sold = 46

Total revenue earned = $396

Let,

x be the number of raspberry scones sold.

y be the number of lemon poppy seed muffins sold.

According to given statement;

x+y=46    Eqn 1

15x+9y=396    Eqn 2

The system of equations x+y=46 and 15x+9y=396 could be used to find the number of boxes of each item sold.

8 0
3 years ago
In an experiment, every hour 20% of the total number of bacteria die, and those remaining bacteria
Ne4ueva [31]

Answer:

Hi there!

Your answer is;

There are 50 bacteria after 3 hours

Step-by-step explanation:

After three hours, with a rate of 20% an hour, 60% should have died

20% of 125 is?

100% is 125

/100

1% is 1.25

×60

60% is 75

125-75= 50

Hope this helps

7 0
3 years ago
Eve's mother has a large collection of shoes. She has 18 pairs of shoes, and 6 of them are boots.
Umnica [9.8K]

Answer:

8+5+2+5=205 boots = 5/20 or 1/41÷4= 0.250.25 × 100 = 25%

Step-by-step explanation:

sorry if im wrong

4 0
2 years ago
Read 2 more answers
I believe this is 10x but I don’t know
NeTakaya
Yes the answer I should be 10.
3 0
2 years ago
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For a function p(x)= x^2-9, what is the inverse function for the domain [0, infinity\
kkurt [141]
An inverse function is a function that reverses another function, so we have a function called:

p(x)

Then, the inverse function will be as follows:

p^{-1}(x)

Given that y = p(x), we need to isolate x in terms of y:

y =  x^{2} -9
∴ y+9 = x^{2}

So:

x=+\sqrt{y+9} and x=-\sqrt{y+9}

therefore, exchanging variables x and y:

y=+\sqrt{x+9} and y=-\sqrt{x+9}
p^{-1}(x)=+\sqrt{x+9} and p^{-1}(x)=-\sqrt{x+9}

Which are the figures shown below.

7 0
3 years ago
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