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anzhelika [568]

3 years ago

13

Help plz. No links. What is 8.21 times 4.2? Show your work.

2 answers:

worty [1.4K]3 years ago

7 0

Answer:

34.482 is the answer to your question

bulgar [2K]3 years ago

6 0

Answer: 34.482

Explanation:
Line up the numbers on the right
Starting in the right, multiple each digit in the top number by each digit in the bottom number, just as with whole number.
Add the products

Hope this helped! It’s hard to show my work on here

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The axis of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves

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Answer:

(a) 0

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Step-by-step explanation:

(a)

We essentially plug 1 in for x and 2 in for y.

Our expression is $\frac{2x-y}{y^2+1}$ , so making the correct substitutions yields:

$\frac{2x-y}{y^2+1}=\frac{2*1-2}{2^2+1}=\frac{2-2}{4+1} =\frac{0}{5} =0$

So, the answer for part (a) is 0.

(b)

Again, we're now plugging in 1 for x and 5 for y:

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So, the answer for part (b) is -3/26.

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4 years ago

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goblinko [34]

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3 years ago

Choose the two triangles that are similar

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Step-by-step explanation:

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3 years ago

What single decimal multiplier would you use to decrease by 1% followed by a 4% increase?

Ugo [173]

Answer:

The single decimal multiplier is 1.0296.

Step-by-step explanation:

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For a decrease of a%, we multiply by: $\frac{100-a}{100}$

For a increase of a%, we multiply by: $\frac{100+a}{100}$

For consecutive changes, we multiply the multipliers.

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Multiplication by $\frac{100-1}{100} = \frac{99}{100} = 0.99$

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Consecutive:

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The single decimal multiplier is 1.0296.

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3 years ago