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3 years ago

Do b plz for the expressions

Mathematics

1 answer:

gayaneshka [121]3 years ago

3 0

$3( {6}^{2} ) + (15 - 3) \\ = 3(36 + 12) \\ = 3(48) \\ = 144$

Answer is 144

Hope this helps. - M

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What is the underline value 28 the number 8 is underlined

Troyanec [42]

In the number 28, when 8 is underlined:

8 has the value of simply 8, because it is in the ones place.

Another example would be the 2 in the 8. If the 2 was underlined, because it is in the tens place, the underlined value will be 20

hope this helps

4 0

3 years ago

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If Mars has a diameter of approximately 4200 miles, what is the volume of Mars.

Alex777 [14]

Answer:

Dimplified: $3.88$ × $10^{10}$ , or $38,800,000,000$

Unsimplified: $38,792,400,000$

Step-by-step explanation:

Remember, the volume of a sphere is $V=$ $\frac{4}{3}$ $\pi r^{3}$

This comes into: $3.87924$ × $10^{10}$

As we know, the shape of mars is a sphere.

Let me know if you have a question, or if it lets you not have the × $10^{10}$

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3 years ago

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What is the product of 3x4 y2 and 2xy3?

Zinaida [17]

3x $3x^{4} y^{2} (2x y^{3} )$
$6x^{5} y^{5}$
When multiplying, power is added. When divide, it is subtracted.
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3 years ago

A regular pentagon has side lengths of 14.1 centimeters and an apothem with length 12 centimeters.

lina2011 [118]

Answer:

The approximate area of the regular pentagon is 423 sq.cm.

Step-by-step explanation:

Formula of area of regular pentagon = $\frac{Pa}{2}$

P=Perimeter of pentagon

a=Apothem

Side of pentagon = 14.1 cm

Perimeter of pentagon = $5 \times Side = 5 \times 14.1=70.5$

Apothem=12 cm

Area of regular pentagon = $\frac{70.5 \times 12}{2}=423 cm^2$

Hence the approximate area of the regular pentagon is 423 sq.cm.

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3 years ago

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Please answer using the information provided (30 points for brainlyest)

Aleks [24]

$8.5(3.5 + x)$

$(8.5 \times 3.5) + (8.5 \times x)$

$29.75 + 8.5x$

I honestly don't know what to do for b. Maybe it tells us that the minimum area possible is 38.25 in²? or maybe it tells us that the area of just the original photo is 29.75 in²? I don't know.

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3 years ago