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Vilka [71]
4 years ago
6

Write the equation of the line that goes through the coordinates (1,-1) and (0,-3)

Mathematics
1 answer:
Ratling [72]4 years ago
8 0

Answer:

y = -4x -3

Step-by-step explanation:

gradient = -4

y-intercept = -3

so... y = -4x -3

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Solve: simultaneous equations <br> 3x + 4y = 27<br> x + 4y = 17
Leni [432]

Answer:

x = 5, y = 3

Step-by-step explanation:

<u>Elimination method: (I will be eliminating 4y) </u>

3x + 4y = 27 --- Equation 1

x + 4y = 17 --- Equation 2

Equation 1-2: 3x + 4y - x - 4y = 27 - 17

2x = 10

x = 10 ÷ 2

x = 5

Substitute x = 5 into Equation 2:

x + 4y = 17

4y + 5 = 17

4y = 17 - 5

    = 12

y = 12 ÷ 4

y = 3

4 0
4 years ago
If you input 2 and 2 is the output and if you input 4 and the output is 6 and if you input 5 and the output is 8 what is the inp
Dominik [7]

Answer:

11

Step-by-step explanation:

3 0
3 years ago
The weather forecast says that the probability of being cloudy tomorrow is 30% and the probability of raining is 25%. If it is c
Bumek [7]
<h3>Answer:</h3>

\large\boxed{C).\,13.5\%}

<h3>Step-by-step explanation:</h3>

In this question, we're trying to find the probability of it being cloudy and raining.

In this case, we know that:

  • Probability of it being cloudy is 30%
  • Probability of it raining is 25% (this is necessarily not needed)
  • If it's cloud, the probability of it raining is 45%

With the information above, we can find the probability.

We know that from a 100% scale, the chance of it being cloudy is 30%.

We know that if it's cloudy, the chances of raining is 45%

To find the probability of it being cloudy and raining, we would multiply 0.3 (30%) by 0.45 (45%)

Solve:

0.3*0.45=0.135\\\\\text{Move the decimal place two times to the right}\\\text{to turn it into a percent}\\\\\boxed{13.5\%}

Your answer would be C). 13.5%

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
6 0
3 years ago
PLEASE HELP ME WITH THIS!!!!
Mashcka [7]

Answer:

6.5/x=10/40;x=26

Step-by-step explanatio

8 0
3 years ago
Read 2 more answers
5.4.3 Quiz: Graphs of Quadratic Functions
babunello [35]

Answer:

D)  (4,-4)

The vertex (h,k) = (4,-4)

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the quadratic function

 y = x² - 8x +12

 y = x² - 2(4) x+ (4)²-(4)² +12

 y = (x-4)² -16 +12

y = (x-4)² -4

Comparing vertex form of the standrad parabola

y = a(x-h)²+k

The vertex (h,k) = (4,-4)

5 0
3 years ago
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