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3 years ago

-6 + (-5) + 7 4 -4 -18 18

Mathematics

2 answers:

Shalnov [3]3 years ago

7 0

Answer: B. -4

Step-by-step explanation:

NeTakaya3 years ago

4 0

-6 + (-5) + 7 =
-6 - 5 + 7 =
-11 + 7 =
-4

Your final answer is -4.

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Murrr4er [49]

Answer:

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Step-by-step explanation:

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3 years ago

If a Food Bank gives away 281 cans of corn, 172 cans of peas, and 572 cans of carrots, how much did they give away in all?

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3 years ago

Solve each calculation. Be sure to report your answer with the correct number of significant figures.

Serjik [45]

Question:

Solve each calculation. Be sure to report your answer with the correct number of significant figures.

5.61000 dg × 1.1010 dg

12.0 m ÷ 3.1415 m

Answer:

1. $5.61000dg * 1.1010dg$ = $6.177 dg^2$

2. $\frac{12}{3.1415} = 3.8198$

Step-by-step explanation:

1. 5.61000 dg × 1.1010 dg

We start by representing each digit using scientific notation

$5.61000 = 561000 * 10^{-5}$

$1.1010 = 11010 * 10^{-4}$

Then, Multiply both numbers

$561000 * 10^{-5} * 11010 * 10^{-4}$

First, rearrange

$561000 * 11010 * 10^{-5} * 10^{-4}$

$6176610000 * 10^{-5} * 10^{-4}$

From law of indices, $10^{-5} * 10^{-4} = 10^{-9}$ ;

So, we have

$6176610000 * 10^{-9}$

$6.176610000$

Because 5.61000 is given in 3 significant figures and 1.1010 is given in 4 significant figures, we approximate the result to 4 significant figures

This gives $6.177$