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slega [8]
3 years ago
11

Please help You don’t have to do the first question but please help me with the rest please help me I have to finish by 6 :00 ca

use I have somewhere important to go to And I not done begging ya :(

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0

Answer:

the answer for number 3 is 35, and for 2 its 5 and 90, sorry thats all i know

Step-by-step explanation:

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Simplify the algebraic expression <br> 3/4(4x-8y)
kompoz [17]

Answer:

3x-6y

Step-by-step explanation:

3/4(4x-8y)

3/4×(4x-8y)

3/4×4(x-2y)

3×1(x-2y)

3x-6y

6 0
2 years ago
Standard form of 5.65 x 10-3?
Ad libitum [116K]

Answer:

53.5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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 r and s represent two numbers, write the following:
Tanzania [10]

Answer:

hope it helps. good day .in case of any question please ask.

4 0
2 years ago
Cuanto costara una sala que se anuncia en $7500, con el 30% de descuento mas 16% de IVA
alexgriva [62]

Answer:

30 por ciento:2250

16 por ciento:1200

Step-by-step explanation:

4 0
3 years ago
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