2 years ago

Please answer this question

Mathematics

1 answer:

AfilCa [17]2 years ago

4 0

Answer:

it is C

Step-by-step explanation:

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Do you think all rectangles are similar to each other? What about squares?

Dominik [7]

Answer: they are all similar

Step-by-step explanation: they all are the same shape no matter how long or tall they are

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3 years ago

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Simplify the surd 3√ 20 +√ 45

melisa1 [442]

Answer:

9 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplify the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$

= 2 $\sqrt{5}$

$\sqrt{45}$

= $\sqrt{9(5)}$

= $\sqrt{9}$ × $\sqrt{5}$

= 3 $\sqrt{5}$

Then

3 $\sqrt{20}$ + $\sqrt{45}$

= 3(2 $\sqrt{5}$ ) + 3 $\sqrt{5}$

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= 9 $\sqrt{5}$

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3 years ago

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aleksley [76]

Answer: 3.71 miles (approximately)

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3 0

3 years ago

Pls help and show workings

andreev551 [17]

Answer: x = 11

Step-by-step explanation:

same as the last question, set them as equal and solve. here's my work:

5x - 1 = 4x + 10

5x - 1 (+ 1) = 4x + 10 (+ 1)

5x = 4x + 11

5x (- 4x) = 4x (- 4x) + 11

x = 11

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3 years ago

What is the surface area of a rectangular prisim with a height of 22 and area of 64

NikAS [45]

Answer:

1408 multiply 64 by 22 for a total of 1,408

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3 years ago

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