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belka [17]
3 years ago
15

Answer the questions

Mathematics
1 answer:
Flauer [41]3 years ago
7 0
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

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2(4 + 2x) ≥ 5x + 5? please help
ziro4ka [17]
2(4 + 2x) ≥ 5x + 5

First, we will need to expand our problem. Expanding is basically removing the parentheses. To do this, we will look at the first part of the problem to begin with. 2(4 + 2x). Since parentheses usually mean multiplication, we can start with 2(4). So, 2 × 4 = 8. We'll do the same thing with 2(2), 2 × 2 = 4. 
8 + 4x \ge 5x + 5

Second, our next step is to subtract 4 from each side. We are trying to get the variable (x) on one side of the problem by itself. 
8 \ge 5x + 5 - 4

Third, we can now simplify (5x) + 5 - (4). I put parentheses around what we are going to focus on. Subtract 5x - 4 to get 1, which can be put as the variable (x). Now we have, x + 5.
8 \ge x + 5

Fourth, let's subtract 5 from each side now. This will set up 8 - 5 which equals 3. 
3 \ge x

Fifth, we can switch sides now to get the result of this problem.
x \le 3

Answer: x \le 3
7 0
3 years ago
What is the perimeter of polygon LMNPQ?
Nataliya [291]

Answer:7+2/

Step-by-step explanation:

4 0
3 years ago
A chicken farmer typically harvests 720 eggs per day from her chickens. How many cartons of one dozen (12) will she be able to s
leva [86]

Answer:

60

Step-by-step explanation:

720÷60=12

60×12=720

7 0
3 years ago
Read 2 more answers
-3x - 3y = 3<br> y = -5x - 17 <br> (solve by substitution)
kakasveta [241]

Answer:

X = -4, y = 3

Step-by-step explanation:

Plug it in

-3x - 3(-5x - 17) = 3

-3x + 15x + 51 = 3

12x + 51 = 3

12x = -48

x = -4

plug it in to find y

Y = -5(-4) -17

y = 20 - 17

y = 3

7 0
3 years ago
Worth brainlist!!!!!!!!!!!!!
Ilya [14]

Answer: The answer to part a is 5 not 8

The MAD in part b is 10

since the median is 5

you go through all the 8 selections subtracting them by 5

-1, -2, -1, 0, 1, 1, 3,-1

since the numbers cant be negative you make them all positve which equals 10

8 0
3 years ago
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