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anyanavicka [17]
3 years ago
5

Is line AB tangent to the circle?

Mathematics
1 answer:
Dafna1 [17]3 years ago
7 0
I think the answer is no hope this would help you

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The sum of the roots of the quadratic equation x^2 + 1=0 is equal to
Naily [24]

Answer:

x² + 1 = 0

a = 1

b = 0

c = 1

x1.2 =  \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a}

x1.2 =  \frac{ - 0 ±\sqrt{ {0}^{2} - (4.1.1) } }{2.1}

x1.2 =  \frac{0± \sqrt{0 - 4} }{2}

x1.2 =  \frac{± \sqrt{ - 4} }{2}

There is no real solution because the discriminant is negative

Note.

Formula diskriminan

√b² - 4ac.

if the diskrimanan is negatif, so the quadratic equatoin dont have solution

7 0
2 years ago
The temperature at a mountain base camp was −3 degrees Celsius on Monday. Tuesday morning, the temperature was 2 degrees Celsius
AnnZ [28]

-9 degrees Celsius

because when the temp is negative it and it keeps going down, then the numbers basically get added and have a negative sign in front of it.

-3 +-2 +-4 = -9

5 0
4 years ago
Read 2 more answers
8 3/4 ÷ (-3 1/2) PLS I NEED HELP
Basile [38]

Answer:

you could have used a calculator

Step-by-step explanation:

-2.8

7 0
3 years ago
Read 2 more answers
How can you tell whether a square root of a whole number is rational or irrational
sveticcg [70]

Answer:

<h3><em>Real numbers have two categories: rational and irrational. If a square root is not a perfect square, then it is considered an irrational number. These numbers cannot be written as a fraction because the decimal does not end (non-terminating) and does not repeat a pattern (non-repeating).</em></h3>

Step-by-step explanation:

5 0
4 years ago
Sylvia earns $7 per hour at her after school job. After working one week, she received a paycheck for $91.
makvit [3.9K]

Answer:

a.) hours=13

b.) h\leq 15

c.) $$105

Step-by-step explanation:

a.) If she earns $7 'per' hour, this multiplication. After a week, we need to see how many hours she worked to earn $91, so this goes behind the equal sign. Let <em>h</em> be the unknown number of hours:

7h=91

Solve for h. Divide both sides by 7:

\frac{7h}{7}=\frac{91}{7}\\\\h=13

Sylvia worked 13 hours at a rate of $7 an hour.

b.) She can work at most 15 hours a week. At 'most' can also mean less than or equal to. Let <em>h</em> be hours:

h\leq 15

Sylvia can work less than or equal to 15 hours per week.

c.) If Sylvia can work 15 hours, plug in this value for <em>h</em> into an equation when she earns $7 per hour. Let the product of the hours and money equal <em>t</em> for total:

t=7(15)\\t=105

The most money Sylvia can earn in a week is $105.

<em>Finito.</em>

6 0
3 years ago
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