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lianna [129]
3 years ago
13

Evaluate the expression for p=-2, q=6, and r= -10. -p2-4q+r2 The answer is ?

Mathematics
1 answer:
melomori [17]3 years ago
3 0

Answer:

-2^2-4(6)+-10=

4-24-10=

4-35=-30

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Bubble algae cells can grow up to 5 cm in diameter. Calculate the surface area : volume ratio of this cell.
Mars2501 [29]

Answer:

6:5

Step-by-step explanation:

Bubble algae cells can grow up to 5 cm in diameter. Calculate the surface area : volume ratio of this cell.

The algae is spherical in nature

Volume of the algae =4/3 pi r³

Volume of the algae = 4/3×pi×2.5³

Volume of the algae = 62.5/3 pi

Surface area = 4pi r²

Surface area = 4pi ×2.5²

Surface area = 25pi

Taking their ratio

surface area : volume ratio

= 25pi:62.5/3 pi

= 25 × 3/62.5

= 1.2

Hence the required ratio is 12/10 which is 6:5

4 0
3 years ago
Need Help 20 points plz.
Over [174]

9514 1404 393

Answer:

  the correct choices are shown

Step-by-step explanation:

<u>Statement</u> . . . . . <u>Reason</u>

1. c ║ d; ∠4 = ∠5 . . . . . Given

2. ∠4 = ∠7 . . . . . Alternate interior angles are equal

3. ∠5 = ∠8 . . . . . Vertical angles are equal

4. ∠7 = ∠8 . . . . . Substitution

8 0
3 years ago
Jason eats 10 ounces of candy in 5 days. How many pounds does he eat per day?
Anna007 [38]

Answer:

He eats 2 oz of candy every day.

Step-by-step explanation:

10oz divided by 5d equals 2 oz per day.

3 0
3 years ago
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Ganezh [65]
-2 ,-1,0,1 are the domains
6 0
3 years ago
A storekeeper increased the price of hats by 5%.
Virty [35]

Answer: c = 1.05p

Step-by-step explanation:

Price of the hat = p

Percentage increase in the price of the hat = 5%

The equation to calculate the increase of the total cost, c, of the hat will be:

c = p + (5% × p)

= p + (5/100 × p)

= p + (0.05 × p)

= p + 0.05p

c = 1.05p

8 0
3 years ago
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