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2 years ago

Which system is equivalent to 5y^2+6y^2=50

Mathematics

1 answer:

stepladder [879]2 years ago

3 0

5y²+6y²=50⇒11y²=50⇒y²= $\frac{454}{100}$ ⇒y= $\sqrt{ \frac{454}{100} }$ ⇒y= $\frac{ \sqrt{454} }{10}$

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A building in the shape of a pyramid was recently built. Each side of the pyramid’s square base has a length of 40 feet and the

Alex

Answer:32,000ft^3

Step-by-step explanation:

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2 years ago

The solution to an inequality is (–∞, 6.5]. Is 6.5 a solution to the inequality? Explain your answer. The solution includes numb

Korvikt [17]

Answer:

Because a bracket is used, the solution includes $6.5$

The solution includes numbers from negative infinity to $6.5$

Step-by-step explanation:

we know that

If the solution for an inequality is (–∞, 6.5]

then

$x\leq 6.5$

The solution is all real numbers less than or equal to $6.5$

Because a bracket is used, the solution includes $6.5$

The solution includes numbers from negative infinity to $6.5$

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2 years ago

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Nimfa-mama [501]

Answer:

A. 12x; 5x + 14

Step-by-step explanation:

<u>Perimeter is:</u>

P = a + b + c
P = 4x - 3 + x + 9 + 8 = 5x + 14

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Correct choice is A

4 0

1 year ago

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Help me plz and explain your answer to me

Vlad1618 [11]

Answer:

$4.171\times10^6$

Step-by-step explanation:

Given:

First Number = 97

Second Number = $4.3\times10^4$

We need to find the product of two numbers in Scientific notation.

Product of two numbers means we need to multiply two number.

Also The proper format for scientific notation is a x 10^b where a is a number or decimal number such that the absolute value of a is less than ten and is greater than or equal to one or, 1 ≤ |a| < 10. b is the power of 10 such that the scientific notation is mathematically equivalent to the original number.

Decimal points are moved until there is only one non-zero digit to the left of the decimal point. The decimal number results as a.

Number of decimal point moved needs to be counted. This number is b.

If decimal are moved to the left b is positive.

If decimal are moved to the right b is negative.

If decimal are not moved b = 0.

scientific notation of a number can be written as a x 10^b and read it as "a times 10 to the power of b."

Hence the product is;

$97\times4.3\times 10^4 = 417.1 \times 10^4$

Expressing in Scientific Notation form we get

$4.171 \times 10^6$

Hence the Answer is $4.171 \times 10^6$ .

3 0

2 years ago

HELP The minute hand of a clock is 5 inches long. to the the nearest tenth of an inch, how far does the tip of the minute hand t

faltersainse [42]

Answer:

18.326 inches

Step-by-step explanation:

The question is basically asking us to find the arc length that the tip of the minute hand travels. The formula for an arc length is S=θr. So we need th find the angle that the minute hand passes through. We know that there is 360 degrees in a cicle and there is 12 stops around a clock, so divide 360 by 12 to find the degrees the minute hand travels every 5 minutes. We ge that every 5 minutes the hand travels 30 degrees, and 35 minutes is 7*5 so we multiple 30*7 to find the angular displacement, and we get 210 degrees. This equation uses radians though so we have to convert, which can be done doing $\frac{210}{1} *\frac{\pi }{180}$ , and we ge that θ is $\frac{7\pi }{6}$ so ( $\frac{7\pi }{6}$ )(5)= 18.326 inches

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2 years ago