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pickupchik [31]
3 years ago
7

(10x 2 +5x-3)+( 7x 2 -2x+7)

Mathematics
1 answer:
Rama09 [41]3 years ago
7 0

Answer:

3x+38

Step-by-step explanation:

1. (10x2 +5x-3)+(7x2 -2x+7) : rewrite problem

2. (20+5x-3)+(14-2x+7) : PEMDAS (10x2=20 and 7x2=14)

3. (5x+17)+(-2x+21) : PEMDAS (20-3=17 and 14+7=21)

4. 3x+38 : Combine like terms

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6 0
4 years ago
A hexagonal pyramid that has a slant height of 39 cm and its hexagonal base has a radius of 10√3 cm.
VMariaS [17]

Answer: 225

Step-by-step explanation:

Volume of the pyramid is calculated as 1/3 bh, where b is base and h is height

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3 0
3 years ago
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Luba_88 [7]

Option D, 63 cm

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7 0
3 years ago
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7 0
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