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densk [106]
3 years ago
12

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:

7 0
3 years ago
Which number line shows the solutions to x < 1?
Dimas [21]

Answer:

A

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)

5 0
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}\\\\

3 0
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:

3 0
3 years ago
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