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3 years ago

Which equation can be used to find 42 x 51?

Mathematics

2 answers:

Marizza181 [45]3 years ago

6 0

Answer:

(40 x 50) + (40 x 1) + (2 x 50) + (2 x 1) = 2,000 + 40 + 100 + 2

Marta_Voda [28]3 years ago

3 0

Answer:

(40 x 50) + (40 x 1) + (2 x 50) + (2 x 1) = 2,000 + 40 + 100 + 2

Step-by-step explanation:

I did some research and used a calculator.

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<Jayla>

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3 years ago

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alexgriva [62]

Answer:

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Step-by-step explanation:

Hi there !

A = A₁ + A₂

A₁ =semicircle

A₁ = πr²/2

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A₁ = 3.14×(3.2ft)²/2 ≈ 32.15 ft²

A₂ = trapezium

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3 years ago

HELP help HELP help HELP help HELP help HELP help HELP help HELP help

Morgarella [4.7K]

$\text{mass of freight train} = 9.98 \times {10}^{6} kg$

$\text{mass of aircraft carrier} = 7.3 \times {10}^{7} \: kg$

$\text{difference of masses of aircraft and train: } \\ \\ 7.3 \times {10}^{7} - 9.98 \times {10}^{6} \\ \\ = 73 \times {10}^{6} - 9.98 \times {10}^{6}$

$= (73 - 9.98 )\times {10}^{6} \\ \\ = 63.02 \times {10}^{6} \\ \\ = 6.302 \times {10}^{6} \: kg \\ \\ \approx 6.3 \times {10}^{6} \: kg$

Approximately, aircraft carrier is 6.3 × 10^6 kg heavier than the freight train.

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