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3 years ago

Brainliest and 30 points please help

Mathematics

1 answer:

kolbaska11 [484]3 years ago

4 0

Answer:

22. Perimeter = 52 units

Area = 160 Square Units

23. Notation form : $2 \times 10^{5}$

Standard Form : 200000

Step-by-step explanation:

22.

The formula for perimeter is

P = 2 (length + Width )

= 2 ( 2x+3x+1)

= 2(5x+1)

The Formula for Area of a rectangle is

A= length x width

A= $2x \times (3x+1)$

A= $6x^2+2x$

Now we have to find the Perimeter and Area for x = 5

P = 2(5 x 5 +1)

P= 2(26)

P=52 units

A= 6 x 5 x 5 + 2 x 5

A= 150 + 10

A= 160 square units

23.

A. By using rule of exponents , we can determine that both the results will be same.

Miriam's calculation

$\frac{2.8 \times 10^{9}}{1.4 \times 10^{4}}$

$\frac{2.8}{1.4} \times 10^{9-4}$

$2 \times 10^5$

Priya's calculation

$\frac{2.8 \times 10^{2}}{1.4 \times 10^{-3}}$

$\frac{2.8}{1.4} \times 10^{2-(-3)}$

$2 \times 10^5$

Standard notation

$2 \times 10^5 = 200000$

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Elena L [17]

Answer:

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Step-by-step explanation:

The function provided is:

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Then the value of <em>x</em> is:

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3 years ago

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7nadin3 [17]

Answer:

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Step-by-step explanation:

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2 years ago

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vichka [17]

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Step-by-step explanation:

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First, we need to determine how much Karmin made an hour.

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So Karmen made $16 every hour that she worked. She worked for 30 hours and earned $480.

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3 years ago

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