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3 years ago

Classify the following polynomial: 3x² + 7x - 5

Mathematics

1 answer:

krok68 [10]3 years ago

5 0

Answer:

trinomial

Step-by-step explanation:

Since this polynomial has 3 different terms, this is, in fact, a trinomial.

Hope this helps :)

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1The volumes of two similar prisms are 972 cm3 and 36 cm3. The surface area of the larger prism is 594 cm2.

diamong [38]

Answer:

Part 1)

The scale factor of the smaller prism to the larger prism is 3

The scale factor of the larger prism to the smaller prism is 1/3

Part 2) The surface area of the smaller prism is 66 square centimeters

Step-by-step explanation:

Part 1) What is the scale factor for the similar figures?

we know that

If two figures are similar, then the ratio of their volumes is equal to the scale factor raised to the cube

Let

z ----> the scale factor

x ---> volume of the larger prism

y ---> volume of the smaller prism

$z^3=\frac{x}{y}$

we have

$x=972\ cm^3\\y=36\ cm^3$

substitute

$z^3=\frac{972}{36}$

Simplify

$z^3=27\\z=3$

therefore

The scale factor of the smaller prism to the larger prism is 3

The scale factor of the larger prism to the smaller prism is 1/3

Part 2) What is the surface area of the smaller prism?

we know that

If two figures are similar, then the ratio of their surface areas is equal to the scale factor squared

Let

z ----> the scale factor

x ---> surface area of the larger prism

y ---> surface area of the smaller prism

$z^2=\frac{x}{y}$

we have

$x=594\ cm^2$

$z=3$

substitute

$3^2=\frac{594}{y}$

solve for y

$y=\frac{594}{9}=66\ cm^2$

therefore

The surface area of the smaller prism is 66 square centimeters

6 0

3 years ago

Help me please I need the answer now

Oliga [24]

Answer:

270 ft³

Step-by-step explanation:

1/2x9x6x10=270

3 0

3 years ago

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A book has 240 pages in it.You read 72 pages. What percentage of the book have you read?

Slav-nsk [51]

Answer: 30

Step-by-step explanation:

72 / 240= .3 x 100=30

7 0

3 years ago

Select all triangles whose side lengths prove they are right triangles. You must select all that apply.

Bogdan [553]

It is D.

Reason. 3^2 is 9, 4^2 is 16.
16+9= 25
The square root of 25 is 5.
Therefore it is D.

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2 years ago

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of 250 seventh grader students 175 walk to school what percent of seventh graders do not walk to school

grandymaker [24]

It's either 30 percent or 70. but i believe the 70 percent walks to school and 30 percent DO NOT walk to school

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3 years ago