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2 years ago

What is the surface area of the square pyramid?

Mathematics

2 answers:

tia_tia [17]2 years ago

5 0

pyramid? 6 square meters 16 square meters 28 square meters 49 square… ... As we know the surface area of a square pyramid is: SA = + (2 ...Answer:

Step-by-step explanation:

MORE POWER

lidiya [134]2 years ago

5 0

Answer:

B. 16 square meters

Step-by-step explanation:

To find the surface area of a square pyramid use this equation: b² + 4(bh/2). b and h will be 2 & 3 respectively.

2² + 4((2 * 3)/2)

First, let's do the work inside the parentheses. We can cancel out the multiplication by 2 and the division by 2, so the right side (by that I mean to the right of the plus sign) just becomes 4(3).

2² + 4(3)

Now, multiply 4 by 3 to get 12.

2² + 12

Next, square 2 to get 4.

4 + 12

Lastly, add 4 and 12 to get 16.

16 m²

After doing the math, I can deduce that the area of this square pyramid is 16 m² (square meters), which is B.

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Alexis and tara both mine salt. alexis mines 300 pounds in 20 hours. tara mines 400 pounds in 40 hours. which of the following i

Archy [21]

Well, if both Alexis and Tara mine salt for 40 hours... they'd have mine 1,000 pounds of salt. Is this what you were looking for?

7 0

2 years ago

Insurance companies A and B each earn an annual profit that is normally distributed with the same positive mean. The standard de

krok68 [10]

Answer:

C. 0.98

Step-by-step explanation:

Let x be the mean of Company A and B annual profit and x/2 and y are standard deviation of Company A and B annual profit.

P(B<0) = 0.9*P(A<0)

P(Z<(0-x)/y) = 0.9*P(Z<(0-x)/(x/2))

P(Z<-x/y) = 0.9*P(Z<-2)

P(Z<-x/y) = 0.0205

x/y =2.04

Or y/x = 1 /2.05

y/x =0.49

Ratio of the standard deviation of company B annual profit to the standard deviation of company A annual profit =y/(x/2)

= 2*(y/x)

= 2*0.49

= 0.98

7 0

2 years ago

Which shows a perfect square trinomial?

anastassius [24]

The answer is c. 16x2 + 24xy + 9y2.

Since we need trinomial (three term expression) choices a and b are incorrect because they have only two terms.

So, our square trinomial is a² + 2ab + b² or a² - 2ab + b²
a² + 2ab + b² = (a + b)²
a² - 2ab + b² = (a - b)²

Let's check choices c and d:
c) 16x² + 24xy + 9y²
a² = 16x²
a² = (4x)²
a = 4x

b² = 9y²
b² = (3y)²
b = 3y

a² + 2ab + b² = (4x)² + 2 * 4x * 3y + (3y)² = 16x² + 24xy + 9y²
CORRECT

d) 49x² - 70xy + 10y²
a² = 49x²
a² = (7x)²
a = 7x

b² = 10y²
b² = (y√10)²
b = y√10

a² + 2ab + b² = (7x)² + 2 * 7x * y√10 + (y√10)² = 49x² + 14xy√10 + 10y²
INCORRECT

So, c) is correct answer

8 0

3 years ago

Read 2 more answers

The quotient of 300 and the quality of x times 2

asambeis [7]

$\frac{300}{ x^{2}}$