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3 years ago

What is the perimeter of the figure a=3?

Mathematics

1 answer:

avanturin [10]3 years ago

8 0

Answer: 18

Step-by-step explanation:

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when was the balloon at 250 ft ? make sure you describe all times when the balloon was at this height.

Alexxx [7]

Answer: A. You need two functions, one for each balloon:

Let h be height, in ft.

Let t be time, in min.

Balloon 1:

h1 = 250 (starting height) + 110t (rate that height is increasing)

Step-by-step explanation:

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3 years ago

Which number line shows the solutions to x < 1?

Dimas [21]

Answer:

Step-by-step explanation:

the graph of 'x < 1' must have an open circle on the number 1 with shading to the left (to indicate all values less than one)

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2 years ago

A student says that if 5x2 = 20, then x must be equal to 2. Do you agree or disagree with the student? Justify your answer.

Llana [10]

I disagree. If each side of the equation is divided by 5, the result is x2 = 4. By the square root property of equality, x = -2 or x = 2. So x could be -2 instead of 2.

7 0

3 years ago

Read 2 more answers

The point P = (x, - 2/7) lies on the unit circle shown below. What is the value of x in simplest form?

miskamm [114]

Answer: $x = \frac{3\sqrt{5}}{7}\\\\$

Explanation:

The equation of the unit circle is $x^2+y^2 = 1\\\\$

Plug in y = -2/7 and solve for x

$x^2+y^2 = 1\\\\x^2+\left(-\frac{2}{7}\right) = 1\\\\x^2+\frac{4}{49} = 1\\\\x^2 = 1-\frac{4}{49}\\\\x^2 = \frac{49}{49}-\frac{4}{49}\\\\x^2 = \frac{45}{49}\\\\x = \sqrt{\frac{45}{49}} \ \ \text{ ... x is positive}\\\\x = \frac{\sqrt{45}}{\sqrt{49}}\\\\x = \frac{\sqrt{9*5}}{7}\\\\x = \frac{\sqrt{9}*\sqrt{5}}{7}\\\\x = \frac{3\sqrt{5}}{7}\\\\$

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2 years ago

Choose all true statements All real numbers are rational numbers. Some rational numbers are natural numbers. No real numbers are

antoniya [11.8K]

Answer:

The answer is: All whole numbers are integers, No rational numbers are integers, and No real numbers are irrational numbers.

Step-by-step explanation:

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3 years ago