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Gnesinka [82]
3 years ago
13

The surface area of a square pyramid is found using the formula SA=b^2+2bh, where b is the length of the base and h is the heigh

t. The surface area of a square pyramid whose base is 3 feet long is 51ft^2 . What is the height of the pyramid, in feet? A. 0.85 B. 7.5 C. 24 D. 7
Mathematics
1 answer:
Genrish500 [490]3 years ago
6 0
The Correct  Answer is C 324
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Consider the following equations:
Dmitry [639]

Answer:

The Answer is: (-2,1)

Step-by-step explanation:

8 0
3 years ago
In the right triangle shown, the third side can be represented by the expression
Westkost [7]

The third side can be represented by D) x = \sqrt{z^{2} } -y^{2} .

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse will be equal to the sum of the squares of the other two sides.

In the given triangle, the hypotenuse is the side that is represented by z. Another side on the triangle is represented by the value y.

Step 2:

Assume the other side of the triangle measures x units.

So according to the Pythagorean theorem,

z^{2}  = x^{2} +y^{2} , x^{2} = z^{2} - y^{2} .

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6 0
3 years ago
Can someone explain this I dont understand it
IrinaVladis [17]
Y = mx + b

m is your slope AKA rate of change
b is the y intercept.

from the graph we can see that the y intercept (b) is 15. (look at the y axis and see what point the line crosses on the y, here it is 15, in-between 10 and 20)

slope is rate of change. to figure this out remember slope = rise over run:

slope = \frac{rise}{run}

so pick two points. how much does one point rise after the other point you picked? In the graph it rises 1 square so rise = 1

Now looking at the same two points, how far away from each other are they on the x axis? Looking at the graph they are 2 squares away from each other. so run = 2

Now plug these numbers into the rise over run formula:

slope \: = \frac{1}{2}

Now we have everything we need to put into our formula for a line:

y = mx + b
y = \frac{1}{2} x + 18

For number 16 you should get:

y = \frac{1}{5} x + 3

after you do the same steps again yourself
8 0
3 years ago
3.which lines are parallel<br> 4. what wouldbyou use to prove these lines parallel
uysha [10]
3)the line G & H are parallel
4) Parallel line theorem is what I do believe it's called (do you have choices for this one?)
6 0
3 years ago
Tell whether the angles are complementary or supplementary. Then find the value of x.
Margaret [11]

Answer: Complementary angles. x = 60

How I got it.

x - 30 + x = 90

then solve for x

Hope this helps!

5 0
2 years ago
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