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Zanzabum
3 years ago
15

Jack and Walter work in a store gift-wrapping department.Jack can wrap 28 boxes in 2 hours,while Walter takes 3 hours to wrap 36

boxes of the same size.One day they work together for t hours to gift wrap 65 boxes.witch equation models shows this situation?
Mathematics
1 answer:
il63 [147K]3 years ago
6 0

12t + 14t = 65 hope this helps

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Find the surface area of each figure (spheres and hemispheres)
xenn [34]

Answer:

7. 1520.53 cm²

8. 232.35 ft²

9. 706.86 m²

10. 4,156.32 mm²

11. 780.46 m²

12. 1,847.25 mi²

Step-by-step explanation:

Recall:

Surface area of sphere = 4πr²

Surface area of hemisphere = 2πr² + πr²

7. r = 11 cm

Plug in the value into the appropriate formula

Surface area of the sphere = 4*π*11² = 1520.53 cm² (nearest tenth)

8. r = ½(8.6) = 4.3 ft

Plug in the value into the appropriate formula

Surface area of the sphere = 4*π*4.3² = 232.35 ft² (nearest tenth)

9. r = ½(15) = 7.5 m

Surface area of the sphere = 4*π*7.5² = 706.86 m² (nearest tenth)

10. r = ½(42) = 21 mm

Plug in the value into the formula

Surface area of hemisphere = 2*π*21² + π*21² = 2,770.88 + 1,385.44

= 4,156.32 mm²

11. r = 9.1 m

Plug in the value into the formula

Surface area of hemisphere = 2*π*9.1² + π*9.1² = 520.31 + 260.15

= 780.46 m²

12. r = 14 mi

Plug in the value into the formula

Surface area of hemisphere = 2*π*14² + π*14² = 1,231.50 + 615.75

= 1,847.25 mi²

8 0
3 years ago
If y varies directly with x and y = 6 when x = 2, what is the constant of variation, k? a. 12 c. 3 b. 2 d. 4 Please select the b
Vladimir79 [104]
I believe it's A i hope this helped :)
3 0
2 years ago
Pls help it is due today
Nuetrik [128]

Answer: x=50

Step-by-step explanation:

18*x-(900)=0

Pull out like factors: 18x-900=18x(x-50)

18=0

x-50=0

Add 50 to both sides of the equation:

x=50

5 0
3 years ago
Read 2 more answers
Which of the below statements is correct and then explain your answer
VMariaS [17]

Answer:

Greater than 3

Step-by-step explanation:

Logarithms explain the relationship between exponents.

Think of them as such, except they got their bases and exponents switched.

In this logarithm:

log2(10)

basically says 2 to the power of <em>what</em> gets you to 10.

Now let's experiment: 2^2=4, 2^3=8. 2^4=16.

Wait, we already crossed 10. Now we know that log2(10) must be in between 3 and 4. We don't need to find the exact value, because thats not what the question asked.

It's between 3 and 4, so it has to be greater than 3 but less than 4. Thee is your answer!

Have a nice day! :)

8 0
2 years ago
The perimeter of the square at the right is 48 inches. What is the area of the square at the right? Explain how you found your a
velikii [3]
Perimeter of square is 48 inches.
Square has 4 side so one side is 48/4= 12 inches.
Then the area of square is 12*12 = 144 inches^2
8 0
3 years ago
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