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3 years ago

(20 POINTS AND BRAINLIEST FOR BEST)

Mathematics

1 answer:

almond37 [142]3 years ago

8 0

Answer:

Addition: -4 + -4 + -4

Multiplication: -4 x 3

Division: -12/3

Step-by-step explanation:

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Which expression is equivalent to 20x-8y?

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Answer:

4(5x-2y)

Step-by-step explanation:

You can only take out the 4 because 20 and 8 are divisible by 4. You also can't take out x because it's only next to the 20 in the equation.

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The least common denominator of two fractions is 30. If you add the two denominators, their sum is 17. What are the denominators

Ann [662]

X+y=17
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It should be 15 and 2

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Jin makes trail mix with apricots and walnuts. A package of dried apricots weighs 22.1 ounces. Jin divides the apricots equally

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Answer:

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Step-by-step explanation:

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3 years ago

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the ratio of the number if people who own a smartphone to the number of people is 4:3. If people who own a smartphone than a fli

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3 years ago

A rectangle and a square have the same perimeter. the rectangle is of length 6cm and has an area of 48cm², find the length of th

EleoNora [17]

<em>The length of the square that has the same perimeter as the rectangle is of length 6cm and area of 48cm² is 7cm</em>

<h2>Explanation:</h2>

Let's call:

$A_{s}:Area \ of \ square \\ \\ A_{r}:Area \ of \ rectangle \\ \\ P_{s}:Perimeter \ of \ square \\ \\ P_{r}:Perimeter \ of \ rectangle$

From the question, we know that:

<em>A rectangle and a square have the same perimeter.</em>

So:

$P_{s}=P_{r}$

Moreover:

<em>The rectangle is of length 6cm and has an area of 48cm²</em>

Accordingly:

$For \ Rectangle: \\ \\ L:Length \\ W:Width \\ \\ A_{r}=L\times W \\ \\ 48=6W \\ \\ W=8$

Also:

$A_{s}=s^2 \\ \\ S:Side \ of \ square$

From the statement of perimeters:

$P_{s}=P_{r} \\ \\ \\ But: \\ \\ P_{s}=4s \\ \\ P_{r}=2W+2L \\ \\ \\ Then: \\ \\ 4s=2W+2L \\ \\ \\ But: \ W=8 \ and \ L=6 \\ \\ 4s=2(8)+2(6) \\ \\ 4s=16+12 \\ \\ 4s=28 \\ \\ \boxed{s=7cm}$

Finally, <em>the length of the square that has the same perimeter as the rectangle is of length 6cm and area of 48cm² is 7cm</em>

<h2>Learn more:</h2>

Perimeter: brainly.com/question/9969486

#LearnWithBrainly

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3 years ago