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nika2105 [10]
4 years ago
15

[10 Points, Algebra 2]

Mathematics
1 answer:
tensa zangetsu [6.8K]4 years ago
4 0
5/ 1+1= 5/2
1+4/1^2-3(1)-4= 5/-6

5/2 - 5/-6 does not equal zero
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How do i calculate the portion walking in degrees total hours (50) and walking is (10)
katrin2010 [14]
Can u be specific pls , so can u send the picture of the task
7 0
3 years ago
Nissan wants to administer a satisfaction survey to its current customers. Using their customer​ database, the company randoml
Irina-Kira [14]

Answer: simple random sampling

Step-by-step explanation:

  • A simple random sampling is a sampling method in which individuals are chosen randomly from the population. In this each individual has equal chances to get selected.
  • If N is the population size , then for any individual , the chances for getting selected is \dfrac{1}{N}.

As per given , the company randomly selects 50 customers directly from the database without applying any further steps and asks them about their level of satisfaction with the company.

Thus , the sampling technique used here is simple random sampling.

3 0
4 years ago
URGENTE, PERGUNTAS DE MARCAR:
Norma-Jean [14]

Answer:

2a: (c)

5o: (1, 3) and (1,1)

3a: (b)

1a: (d)

4o: (b)

Step-by-step explanation:

2a: the equation of a circle circumference needs to be transformable to the form (x-x_C)^2 + (y - y_C)^2 = r^2 where C(x_C; y_C) is the center and <em>r</em> is the radius. (a) and (d) can’t be it because they contain non-zero factors on <em>xy</em>. (b) isn’t an equation.

5o: just put the given (<em>x</em>, <em>y</em>) into the equations and see if it holds. (2, 3) isn’t on the circumference of (1) because 2^2+3^2-2\cdot 2 -4\cdot 3 + 4 = 1 \neq 0, (3, 1) isn’t on it either because 3^2 + 1^2 - 2\cdot 3 - 4\cdot 1 + 4 = 4 \neq 0.

3a: calculate the value of the left-hand side term of the equation using (<em>x</em>, <em>y</em>) from the given point <em>M</em>. That’s the difference of square distance to the center to the square radius r^2. Thus it’s 0 if the point is on the circumference, negative if inside and positive if outside. You get 3^2 + 4^2 - 6\cdot 3 -2\cdot 4 + 8 = 7, positive, so it’s outside the circle.

1a: see definition from 2a. Here, r^2 = 9.

4o: insert the y from the straight line equation (r) (which can be equivalently transformed to y = x+1) into the circumference equation. If it yields no solution, that’s outside, it there’s exactly one solution, that’s a tangent and if there are two solutions, it’s a secant. x^2+(x+1)^2+2x - 4(x+1) = x^2 + x^2 + 2x + 1  + 2x - 4x + 4 = 2x^2 + 5 = 0 \iff x^2 = 2.5 \iff x \in \{-\sqrt{2.5}, \sqrt{2.5}\} There are two solutions, so it’s a secant.

3 0
3 years ago
The measure of angle a is twice the measure of angle b the measure of angle c is at least one degree more than the measure of an
Sphinxa [80]

Answer:

Step-by-step explanation:

The measure of angle a is twice the measure of angle b. This means that

a = 2b

The measure of angle c is at least one degree more than the measure of angle a. This means that

c ≥ a + 1

c ≥ 2b + 1

if the sum of the three angles is at least 61 degrees, it means that

a + b + c = 61 - - - - - - - - - - - - - 1

Substituting a = 2b and c = 2b + 1 into equation 1, it becomes

2b + b + 2b + 1 = 61

5b = 61 - 1 = 60

b = 60/5 = 12

c ≥ 2× 12 + 1

c ≥ 25

25 ≥ a + 1

25 - 1 ≥ a

24 ≥ a

a ≤ 24

Therefore, the range possible measurements for angle b is

b ≤ 12

4 0
3 years ago
How much of the circle is shaded? Write your answer as a fraction in simplest form.
Ilia_Sergeevich [38]
55 % of the circle has been shaded. 1/5 is equal to 20% and 1/4 is equal to 25%. If you add 20 to 25 you get 45% meaning 45% is not shaded. In conclusion, 55% of the circle has been shaded.
5 0
3 years ago
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