All categories

3 years ago

Use a net of the square pyramid, if necessary, to find the surface area of the pyramid.

Mathematics

2 answers:

Zepler [3.9K]3 years ago

6 0

Answer:

160 units squared

Step-by-step explanation:

First we need to find the surface area of one of the triangles;

(8*6*0.5)

Next, we find the surface area of all of the triangles;

(24*4)

The next step is to find the surface area of the square;

(8*8)

The last step is to fins the surface area of the whole thing.

(96+64)

160

The surface area of the pyramid is going to be 160 units squared

Alika [10]3 years ago

5 0

Answer:

160

Step-by-step explanation:

You take the area of one of the triangles, which is 24, multiply that by 4. You get 96. You then add 64, the area of the square base, and end up with 160.

You might be interested in

The equation of the line of best fit of a scatterplot is y = -8x + 3. What is the y-intercept?

aivan3 [116]

Answer:

8 is the answer

Step-by-step explanation:

3 0

3 years ago

if Lylah completes the square for f(x)=x squared -12x+7 in order to find the minimum she must write f(x) in the general form f(x

abruzzese [7]

Answer:

A. 6

Step-by-step explanation:

f(x) = x² − 12x + 7

To complete the square, we first factor the leading coefficient to make it 1 (which it already is).

Then, we take half the second coefficient, square it, and then add to both sides. So (-12/2)² = (-6)² = 36.

f(x) + 36 = x² − 12x + 36 + 7

Then we factor the perfect square:

f(x) + 36 = (x − 6)² + 7

Then solve for f(x) by subtracting and simplifying:

f(x) = (x − 6)² + 7 − 36

f(x) = (x − 6)² − 29

So the value of a is 6.

6 0

3 years ago

Beatrice made 7 2/3 cups of lemonade for her lemonade stand. Later, she made 10 3/5 more cups of lemonade. How many cups of lemo

mojhsa [17]

You need to do cross multiplication

4 0

3 years ago

Read 2 more answers

Jejdhsgeuekdskdjduuwwoiehrddujeejdhxu

Dimas [21]

Jssjsjsjsjsjdjidjebsvabbxjxjufiwiwj .

3 0

4 years ago

Read 2 more answers

Describe and correct the error(s) made in each of the problems below.

ladessa [460]

Answer:

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

Step-by-step explanation:

<u>Errors in Algebraic Operations </u>

It's usual that students make mistakes when misunderstanding the application of algebra's basic rules. Here we have two of them

When we change the signs of all the terms of a polynomial, the expression must be preceded by a negative sign
When multiplying negative and positive quantities, if the number of negatives is odd, the result is negative. If the number of negatives is even, the result is positive.
Not to confuse product of fractions with the sum of fractions. Rules are quite different

The first expression is

$1-x / (5-x)(-x)=x-1 / x(x-5)$

Let's arrange into format:

$\displaystyle \frac{1-x}{(5-x)(-x)} =\frac{x-1 }{ x(x-5)}$

We can clearly see in all of the factors in the expression the signs were changed correctly, but the result should have been preceeded with a negative sign, because it makes 3 (odd number) negatives, resulting in a negative expression. The correct form is

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

Now for the second expression

$5/s+2/5=2/s$

Let's arrange into format

$\displaystyle \frac{5}{s}+\frac{2}{5} =\frac{2}{s}$

It's a clear mistake because it was asssumed a product of fractions instead of a SUM of fractions. If the result was correct, then the expression should have been

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

6 0

3 years ago