3 years ago

4 A numerical expression is shown below. Evaluate the expression.help please explain too

Mathematics

1 answer:

Andrews [41]3 years ago

8 0

Answer:

Step-by-step explanation:

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Multiply and give the answer in scientific notation: (2.3 x 10-3)(3 x 108) A) 6.9 x 105 B) 6.9 x 1011 C) 6.9 x 10-5 D) 6.9 x 102

Furkat [3]

Answer: A) is the right answer. $6.9\times10^{5}$

Step-by-step explanation:

Given product : $2.3\times10^{-3}\times3\times10^8$

To multiply above expression, first we need to combine like terms and then we need to use the law of exponents.

$2.3\times3\times10^{-3}\times10^8\\=(2.3\times3)\times(10^{-3}\times10^8)\\=6.9\times10^{-3+8}......[\text{by law of exponents }a^n\cdot\ a^m=a^{m+n}]\\=6.9\times10^{5}$

Thus, the answer is $6.9\times10^{5}$ .

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3 years ago

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Estimate the sum: 6.74 + 6.92 + 7.243 + 7.398

hoa [83]

Answer:

Step-by-step explanation:

6.74 and 6.92 both round up to 7. Meaning the problem is basically 7 time 4.

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3 years ago

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Nata [24]

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3 years ago

Read 2 more answers

4 A numerical expression is shown below. Evaluate the expression.​help please explain too

4 A numerical expression is shown below. Evaluate the expression.help please explain too