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4 years ago

Does anybody here know the metric system?

Mathematics

2 answers:

Vadim26 [7]4 years ago

8 0

Kilometers 1000m 10³
hectometer 100m 10²
decameter 10m 10¹
standerd 1m 10

REY [17]4 years ago

6 0

I sort of know the metric system

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Five times a number, decreased by 58, is -23. Find the number.

mr Goodwill [35]

Let's say the number is represented by x.

Five times the number is 5x.

5x - 58 = -23 (Add 58 to both sides)

5x = 35 (divide both sides by 5)

x = 7

The number is 7.

8 0

4 years ago

Translate to a quadratic equation, then solve using the quadratic formula. The length of a rectangular air filter is 3 inches l

balu736 [363]

Answer:

Width of the rectangle = 17 inches

Length of the rectangle = 31 inches

Step-by-step explanation:

Let w be the width of the rectangle.

Given:

Width of the rectangle = w

Length of the rectangle = 2w - 3

Area of the rectangle $=527\ inches^{2}$

Solution:

We know that the area of the rectangle.

$Area\ of\ rectangle = length\times width$

$w(2w-3)=527$

$2w^{2}-3w-527=0$

Now, we first find the root of the above equation.

Use quadratic formula with $a=2, b=-3, c=-527$ .

$t=\frac{-b\pm \sqrt{(b)^{2}-4ac}}{2a}$

Put a, b and c value in above equation.

$w=\frac{-(-3)\pm \sqrt{(-3)^{2}-4(2)(-527)}}{2(2)}$

$w=\frac{3\pm \sqrt{9+8\times 527}}{4}$

$w=\frac{3\pm \sqrt{9+4216}}{4}$

$w=\frac{3\pm \sqrt{4225}}{4}$

$w=\frac{3\pm 65}{4}$

For positive sign

$w=\frac{68}{4}$

w = 17 inches

So, width of the rectangle is 17 inches.

Length of the rectangle.

$Length = 2\times w-3$

$Length = 2\times 17-3$

$Length = 34-3$

Length = 31 inches

So, length of the rectangle is 31 inches.

Therefore, width and length of the rectangle is 17 inches and 31 inches.

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4 years ago

Round the number 33 and 89

trapecia [35]

33 rounded to the tens place would be 30.
89 rounded to the tens place would be 90.

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3 years ago

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Please help, very hard question (for me), Will give Brainliest!!!

AleksAgata [21]

The answer is D. This is because when you take 10.65 and subtract 9.95 from it you get 0.07. If you take this number and continuously add to 9.95 you get the numbers provided in the chart. We'll also notice that the 0.07 is only added after 10 minutes of talking (10,20,30,etc.).

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4 years ago

Please make effort to try... I need help

Brums [2.3K]

Answer:

that the right answer btw (3, - 3/2)

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3 years ago

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