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luda_lava [24]
3 years ago
7

Which inequality describes the graph?

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
8 0

Answer:

x>-2

Step-by-step explanation:

An open circle implies that the solution cannot be equal to, therefore options A and D are incorrect. Since the shows the arrow pointing towards the left that means all solutions greater than -2 are correct. Therefore, x>-2.

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Solve a triangle with a = 25, b = 30, and C= 160°.
larisa86 [58]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
An experiment involves 16 participants. From these, a group of 4 participants is to be tested under a special condition. How man
zheka24 [161]

Answer:

43,680 ways.

Step-by-step explanation:

We have been given that an experiment involves 16 participants. From these, a group of 4 participants is to be tested under a special condition. We are asked to find the number of groups of 4 participants that can be chosen, assuming that the order in which the participants are chosen is irrelevant.

We will use permutations formula to solve our given problem.

^nP_r=\frac{n!}{(n-r)!}

For our given problem n=16 and r=4.

^{16}P_4=\frac{16!}{(16-4)!}

^{16}P_4=\frac{16!}{12!}=\frac{16*15*14*13*12!}{12!}=16*15*14*13=43,680

Therefore, 4 participants can be chosen in 43,680 different ways.  

6 0
4 years ago
Find a solution to 3cos(θ)=−0.862 in radians
eimsori [14]
3cos(\theta) = -0.862
\frac{3cos(\theta)}{3} = \frac{-0.862}{3}
cos(\theta) = -\frac{431}{1500}
cos^{-1}[cos(\theta)] = cos^{-1}(-\frac{431}{1500})
\theta = 106.6983737\°
\theta = 1.86223792^{r}
7 0
3 years ago
I know this is simple, but I’m having trouble. Can you help me?
JulsSmile [24]

Answer:

That will be 1/14 points

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE HELP
Degger [83]

Answer:

1) \frac{m^3}{n^6}

2) \frac{a^3}{b}

3) \frac{y^8}{x^2}

Step-by-step explanation:

To evaluate or simplify expressions with exponents, we use exponent rules.  

1. An exponent is only a short cut for multiplication. It simplifies how we write the expression.

2. When we multiply terms with the same bases, we add exponents.

3. When we divide terms with the same bases, we subtract exponents.

4. When we have a base to the exponent of 0, it is 1.

5. A negative exponent creates a fraction.

6. When we raise an exponent to an exponent, we multiply exponents.

7. When we have exponents with parenthesis, we apply it to everything in the parenthesis.

We will use these rules to simplify.

Problems:

1) \frac{m^3}{n^6}

n^-6 has a negative exponent and should be moved to the denominator while p^0 is equal to 1

2) \frac{a^3}{b}

Divide each base by subtracting exponents. a^4-1 = a^3 and b^-3--2=b^-1. B has a negative exponent so move it into the denominator.

3) \frac{y^8}{x^2}

Simplify inside the parenthesis first by adding exponents of same bases x^-2+3 = x. Then apply the outside exponent using power to a power rule and negative exponent rule.

7 0
4 years ago
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