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3 years ago

Find the surface area of the regular pyramid. _____sq. cm.

Mathematics

1 answer:

snow_tiger [21]3 years ago

7 0

Ashes2049, are you good at geometry?

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A triangle has side lengths of (7x-4)(7x−4) centimeters, (x+3)(x+3) centimeters, and (3y+2)(3y+2) centimeters. Which expression

Papessa [141]

Answer:

This assumes that the question was meant to read:

"A triangle has side lengths of (7x−4) centimeters, (x+3) centimeters, and (3x+2) centimeters." And not "A triangle has side lengths of (7x-4)(7x−4) centimeters, (x+3)(x+3) centimeters, and (3y+2)(3y+2) centimeters."

If the revision is correct, the perimeter is 11x + 1 cm

=============================================

If the question was correctly written, then answer is:

50x^2 - 50x + 9y^2 + 12 y + 29

===============

Step-by-step explanation:

(7x-4) cm

+ (x+3) cm

+ (3x+2) cm

11x + 1 cm

If the question was correctly written as is, then:

(7x-4)(7x−4) = 49x^2 - 56x + 16

+(x+3)(x+3) = + x^2 + 6x + 9

+(3y+2)(3y+2) = +9y^2 + 12 y + 4

50x^2 - 50x + 9y^2 + 12 y + 29 cm

8 0

2 years ago

Peter has a coupon for 15% off the price of any item in a sporting good store he wants to buy a pair of sneakers that are priced

aniked [119]

Answer:

$31.44

Step-by-step explanation:

According to the word problem, Peter has a coupon for 15% OFF.

This means the price will reduce by 15%.

To solve this, first, change the percentage (15%) to decimal form.

To do this, divide the percentage by 100.

15 / 100 = 0.15.

0.15 is the decimal form of 15%.

Next, multiply the decimal form of the percentage by the price.

36.99 x 0.15 = 5.5485

Lastly, subtract the product from the original price.

36.99 - 5.5485 = 31.4415

In this case, the product goes above the hundredths place.

So we must round 31.4415 to the hundredths place.

31.4415 ≈ 31.44

Therefore, the sneakers are $31.44 after the discount of 15%.

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=x%2B%5Cfrac%7B2%7D%7Bx%7D%20%3D%203" id="TexFormula1" title="x+\frac{2}{x} = 3" alt="x+\frac{2

enyata [817]

Answer:

x=2, x=1

Step-by-step explanation:

Multiply both sides by x, so you get (x^2)+2=3x, which comes from $xx+\frac{2}{x}x=3x$

Solve for (x^2)+2=3x

(x^2)-3x+2=0

(x-2)(x-1)=0, use box method or FOIL if needed

x=2,x=1

7 0

3 years ago

What is the degree and leading coefficient? -y-18y^6+8+3y^5

Lina20 [59]

Degree is 6 and the leading coefficient is -18

4 0

3 years ago

Amanda had $20 when she went into the shopping center. She purchased a snack to eat for $y and then bought two items at a clothi

Volgvan

Answer:

x+y=20

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers