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koban [17]
2 years ago
11

ANSWER THIS QUESTION PLZ

Mathematics
1 answer:
Delicious77 [7]2 years ago
6 0

Answer:

640 im pretty sure

Step-by-step explanation:

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Does anybody know this????
jekas [21]
F(x) = 2 * 2 ^x

f(-2) = 2 * 2^-2

f = 0.5
3 0
3 years ago
Answer the questions
Flauer [41]
10) 1 gallon of water for every inch of the fish's body length.
a) 2 1/2 inches long fish needs 2 1/2 gallon of water.
b) tank: l = 7 inches ; w = 5 inches; h = 7 ; volume = 7in * 5in * 7in = 245 in³
c) no. her fish tank is not large enough for the fish.
volume of 1 gallon of water is 231 in³, water needed is 2 1/2 gallon, so 5/2 * 231 in³ = 577.50 in³ volume.

11) volume = 7in * 3.5in * 1.75 in = 42.875 in³ 
weight of the brick = 0.1 pound per cubic inch ⇒ 42.875 in³ * 0.1 lb = 4.2875 pounds
weight of the gold bar = 0.7 pound per cubic inch ⇒ 42.875 in³ * 0.7 lb = 30.0125 pounds

12) l = 55cm ; w = 40cm ; h = 30 cm
volume = 55cm * 40cm * 30cm = 66,000 cm³

7 0
3 years ago
Ronnie bought 6 ice cream cones for himself and his friends. Seventeen cents tax was added to the price of each cone. The total
GalinKa [24]
$14.58
-$0.17
$14.41
÷6
2.4016666667
$2.40 per cone (rounded by cent)
8 0
3 years ago
A 3-inch by 5-inch index card is rotated around a horizontal line and a vertical line to produce two different solids. Which sol
Strike441 [17]

This question is incomplete, the missing diagram is uploaded along this answer below;

Answer:

horizontal V₁ ( 141.37 in³ ) is less than vertical V₂ ( 235.62 in³ )

Step-by-step explanation:

Given the data in the question and as illustrated in the image below;

from the image,

We find the volume of the solid obtained by rotating the card around a horizontal line;

Volume of the cylinder V₁ = πr²h

given that; radii = 3 in and height = 5 in

we substitute

V₁ = π × (3)² × 5

V₁ =  π × 9 × 5

V₁ = 141.37 in³

Next we find the volume of the solid obtained by rotating the card around a vertical line;

Volume of the cylinder V₂ = πr²h

given that; radii = 5 in and height = 3 in

we substitute

V₂ = π × (5)² × 3

V₂ =  π × 25 × 3

V₂ = 235.62 in³

Hence horizontal V₁ ( 141.37 in³ ) is less than vertical V₂ ( 235.62 in³ )

8 0
3 years ago
Based on her past experiences, a homeowner estimates that appliances lose 25% of their resale value each year. If her estimate i
blsea [12.9K]
It would be 800 because you would need to do 25 times 10 which is 250, then change that into a decimal, 0.250, then you multiply 3,200 and 0.250 and get 800.

8 0
3 years ago
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