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3 years ago

Add: (4a.”+ 6a2- 10a - 4) +(6a + a²+ a + 7)

Mathematics

1 answer:

sineoko [7]3 years ago

3 0

(2a-1 )exponent two•(3a + 2) exponent 2• (4a-3) exponent 2

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If the area of a square living room is 169 square feet . What is the perimeter of the room

stich3 [128]

The one wall would be 13 feet long.
13+13+13+13= 52 feet.

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3 years ago

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6m+10p when m=8 and p=14

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The product of 4 and z is greater than or equal to 7.

rewona [7]

4z ≥ 7
divide seven by four
z ≥ 1.75
or, if you need it in fraction form, it would be
z ≥ 7/4

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3 years ago

Tiffany started her homework at 5:20, if it took him 45 minuets to get done, what time did he get finished

never [62]

Answer:

6:05

Step-by-step explanation:

5:20+40= 6:00

6:00+5= 6:05

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3 years ago

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I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Step2247 [10]

Answer:

$A = 297\pi$

Step-by-step explanation:

To solve this problem we need to be familiar with the formula for the surface area of a cone:

$A = \pi r(r + \sqrt{h^2+r^2})$

We are given the length of a side and the diameter, to calculate the radius divide the diameter in half:

$r = \frac{d}{2}\\r = \frac{18}{2}\\r = 9 cm$

To calculate the height of the cone, we must use the Pythagorean Theorem:

$C^2 = A^2 + B^2$

We can treat the side length as the hypotenuse $C$ , the radius as the base $A$ , and solve for height $B$ . Set the expression up like this:

$C^2 = A^2 + B^2\\24^2 = 9^2 + B^2\\B^2 = 24^2 - 9^2\\B = \sqrt{24^2 - 9^2}\\B = \sqrt{576 - 81}\\B = \sqrt{495}\\B \approx 22.25$

Now we can plug into our original formula:

$A = \pi r(r + \sqrt{h^2+r^2})\\A = \pi 9(9+\sqrt{\sqrt{495}^2+9^2}\\A = \pi 9(9+\sqrt{495 + 81}\\A = \pi 9(9+\sqrt{576})\\A = \pi 9(9 + 24)\\A = \pi 9(33)\\A = 297\pi$

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2 years ago