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lozanna [386]
3 years ago
12

Solve the system by the method of elimination.

Mathematics
2 answers:
posledela3 years ago
6 0

Answer:

<em><u>hope</u></em><em><u> </u></em><em><u>its helpful to uh</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

Fofino [41]3 years ago
6 0

Answer:

x=5, y = 9/5

Step-by-step explanation:

x+5y = 14

3x - 10y = -3

Multiply the first equation by 2

2(x+5y) = 2*14

2x+10y = 28

Add this to the second equation to eliminate y

2x+10y = 28

3x - 10y = -3

----------------------

5x + 0y = 25

Divide by 5

5x/5 = 25/5

x = 5

Now find y

x+5y =14

5+5y = 14

Subtract 5 from each side

5-5+5y = 14-5

5y = 9

Divide by 5

5y/5 = 9/5

y = 9/5

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D

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Its decaying since its being multiplied by by a number less than 1

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What is the coefficient in the expression 4x + 2 <br>O2<br>O4<br>Ox<br>O+​
Amiraneli [1.4K]

A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x).

The 2 and + are out since they don't have variables(and the + is just a +).

So 4 and x are left. x is a variable, not a coefficient, so the last(and correct) answer is 4.

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8 0
3 years ago
Answer with work pls
viktelen [127]

Answer:

50 students

Step-by-step explanation:

Hello!  

To solve this question, we would first need to look at the data. In this data, there are people who chose their favorite sport, and the number of people who chose that response. In order to solve the problem, we would have to find the ratio of how many people choose baseball over the other sports.

By this, we can add the number of students together. 30+10+5+15=60. Out of those 60 students, only 5 people chose baseball.

Since the ratio of the people who chose baseball is 5/60 (meaning that it is a 5/60 % chance someone would pick this sport), we would need to find the amount of people assumed to pick baseball in 600 student survey.

We can make a relationship with these two numbers.

\frac{5}{60} =\frac{x}{600}, since the ratio of the students who chose baseball remain the same.

You can see that the ratio on the denominators just add a zero on the bottom, so the top should add 0 as well, to get 50 for x, what we needed.

You can also solve that relationship by cross multiplication.

5(600)=x(60

3000=60x

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Regardless, the answer is 50 students who would choose baseball in a 600 persons survey.

5 0
2 years ago
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3 years ago
Find the sum of the first 6 terms of 3 - 6 + 12 + …
Natalka [10]

Answer:

S_6 = -63

Step-by-step explanation:

The sequence above is a geometric sequence.

The common ratio (r) = \frac{-6}{3} = \frac{12}{-6} = -2

The common ratio < 1, therefore, the formula for the sum of nth terms of the sequence would be: S_n = \frac{a_1(1 - r^n)}{1 - r}

a1 = 3

r = -2

n = 6

Plug in the values into the formula

S_6 = \frac{3(1 - (-2^6)}{1 - (-2)}

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S_6 = -63

6 0
3 years ago
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