3 years ago

The Philadelphia Museum of Art’s triangular pediment has the measurements shown in the diagram. What is the area?

Mathematics

1 answer:

kherson [118]3 years ago

5 0

Answer:

420 ft^2

Step-by-step explanation:

12x70=840

840/2=420

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The difference of two trinomials is x2 − 10x + 2. If one of the trinomials is 3x2 − 11x − 4, then which expression could be the

12345 [234]

Answer:

$4x^2-21x-2$

Step-by-step explanation:

Given that:

Difference of two trinomials is $x^2 - 10x + 2$

One of the two trinomials is $3x^2 - 11x - 4$

To find:

The other trinomial = ?

Four options are:

$2x2 - x - 2 \\2x2 + x + 6 \\4x2 + 21x + 6\\ 4x2 - 21x - 2$

Solution:

Let the two trinomials be A and B.

Given A - B = $x^2 - 10x + 2$

B = $3x^2 - 11x - 4$

We have to find the other trinomial A.

A - B = $x^2 - 10x + 2$

A - ( $3x^2 - 11x - 4$ ) = $x^2 - 10x + 2$

$\Rightarrow$ A = $x^2 - 10x + 2$ + ( $3x^2 - 11x - 4$ )

$\Rightarrow$ A = $4x^2-21x-2$

So, the correct answer is $4x^2-21x-2$ .

3 0

3 years ago

Write a expression that is equivalent of 4+3(5+x)

Serggg [28]

Answer:19+3x

Step-by-step explanation:

4+3(5+x)

Open bracket

4+15+3x

19+3x

3 0

3 years ago

Suppose f(x)=x^2 -8 evaluate f(2)-f(3)

Westkost [7]

Answer:

f(2)= -4 f(3)= 1

Step-by-step explanation:

8 0

3 years ago

Solve the system of equations by the substitution method.<br> y = 5x + 6<br> y=9x+7.

joja [24]

Answer:

(-1/4, 19/4)

Step-by-step explanation:

5x+6=9x+7

-4x=1

x= -1/4

y=5(-1/4) +6

y=19/4

3 0

3 years ago

If five notebooks cost $5.25, how much would three notebooks cost? Show your work

nignag [31]

Easy just do )5.25 +$5.25+$5.25 witch equals $15.75 YAY

6 0

3 years ago

Read 2 more answers