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4 years ago

What is the answer to the solution 2x-y=5 A) 2,-1 B) 3,-1 C) 1,2 D) 7

Mathematics

2 answers:

lapo4ka [179]4 years ago

6 0

I believe it's a , not sure though

Lady_Fox [76]4 years ago

3 0

A) 2, -1 I believe as long as it's looking for a point that the line goes through on a coordinate plain. :)

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When randomly selecting an adult, A denotes the event of selecting someone with blue eyes. What do Upper P (Upper A )P(A) and U

bezimeni [28]

Answer:

P(A): It is the probability of selecting someone with blue eyes.

$P(\bar{A})$ : It is the probability of selecting someone who does not have blue eyes

Step-by-step explanation:

We are given the following in the question:

A: event of selecting someone with blue eyes.

Probability:

The probability of an event tells the chances of happening of that event.

It is mathematically defined as:

$\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}$

Complement of an event:

It is the event that consist of all outcomes not happening in A.

It is represented by $\bar{A}$

$P(A) + P(\bar{A}) = 1$

We have to explain the representation:

a) P(A): It is the probability of selecting someone with blue eyes.

It gives us the chances of someone having blue eyes.

b) $P(\bar{A})$ : It is the probability of selecting someone who does not have blue eyes

It is the chances of selecting someone who does not have blue eyes.

4 0

4 years ago

How many meters are in a kilometer?

REY [17]

1000 meters

brainliest?

7 0

3 years ago

Read 2 more answers

Plzzz do by step by step it will be helpful to me plz ..!!

Helga [31]

Answer:

$\frac{9a + 7}{2} + (a - \frac{a - 2}{7}) = 36 \\ \\ \frac{9a + 7}{2} + ( \frac{7a}{7} - \frac{a - 2}{7} ) = 36 \\ \\ \frac{9a + 7}{2} + ( \frac{7a }{7} + \frac{ - (a - 2)}{7} ) = 36 \\ \\ \frac{9a + 7}{2} + ( \frac{7a}{7} + \frac{ - a + 2}{7} ) = 36 \\ \\ \frac{9a + 7}{2} +( \frac{7a - a + 2}{7} ) = 36 \\ \\ \frac{9a + 7}{2} + \frac{6a + 2}{7} = 36 \\ \\ \frac{7(9a + 7)}{14} + \frac{2(6a + 2)}{14} = 36 \\ \\ \frac{63a + 49}{14} + \frac{12a + 4}{14} = 36 \\ \\ \frac{63a + 12a + 49 + 4}{14} = 36 \\ \\ \frac{75a + 53}{14} = 36 \\ \\ 75a + 53 = 36 \times 14 \\ \\ 75a + 53 = 504 \\ \\ 75a = 504 - 53 \\ \\ 75a = 451 \\ \\ a = \frac{451}{75} \\ \\ a = 6.013$

I hope I helped you^_^

7 0

3 years ago

Of the 360 students at Moores school of Music, 270 are learning to play stringed instruments. What percent of the students are l

Sloan [31]

Answer:

75% of the students at the Moore school are are learning to play a stringed instrument.

Step-by-step explanation:

We are given the following in the question:

Total number of students at Moore school = 360

Number of students learning stringed instrument = 270

We have to find the percentage of the students who are learning to play a stringed instrument.

Percentage =

$=\dfrac{\text{Students are learning to play a stringed instrument}}{\text{Total number of students}}\times 100\5\\\\=\dfrac{270}{360}\times 100\%\\\\=75\%$

Thus, 75% of the students at the Moore school are are learning to play a stringed instrument.

5 0

4 years ago

consider the polynomial equation x(x-3)(x+9)(x-7)=0. Which of the following are zeros of the equation? select all that apply

jenyasd209 [6]

To answer this, just set each factor = to 0 and solve for x:

x=0
x=3
x=-9
x=7

so the zeros of the function are {-9, 0, 3, 7}.

3 0

4 years ago