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finlep [7]
2 years ago
10

Solve the system of equations: y = 2x - 5, y=x^2- 5

Mathematics
1 answer:
Burka [1]2 years ago
6 0

Answer:

A

Step-by-step explanation:

both equation is y so

2x - 5 = x² - 5

2x = x²

0 = x² - 2x

0 = x(x-2)

x = 0

x = 2

for x = 0

y = 2x - 5

y = 0 - 5

y = -5

(0,-5)

for x = 2

y = 2x - 5

y = 2(2) - 5

y = -1

(2,-1)

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Answer:

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r - ( -4(-4) - ( -3-3))

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8 0
2 years ago
The table shows how the number of cars, c, depends on the number people, t. How would you write this as an equation?
Nataly [62]

Answer:

t = 3c - 5

Step-by-step explanation:

The relation between c and t is linear as the increase of the value of t is uniform for each unit increase in the value of c.

Now, any two points on the graph of the t = f(c) equation are sufficient to determine the equation.

Let the points are (2,1) and (3,4).

So, using two points formula of straight line we get the equation is  

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6 0
3 years ago
Factorise 4x squared + 27 - 7
Olenka [21]
STEP-BY-STEP SOLUTION:

= 4x^2 + 27 - 7

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7 0
3 years ago
2x+5y=12
anastassius [24]
Y = -3x - 1......so we sub in -3x - 1 in for y in the other equation

2x + 5y = 12
2x + 5(-3x - 1) = 12....now distribute the 5 through the parenthesis
2x - 15x - 5 = 12...add 5 to both sides
2x - 15x = 12 + 5..combine like terms
-13x = 17...divide both sides by -13
x = -17/13
now sub in -17/13 for x in the other equation
y = -3x - 1
y = -3(-17/13) - 1
y = 51/13 - 1
y = 51/13 - 13/13
y = 38/13

so the solution is (-17/13, 38/13)

8 0
3 years ago
Jillians annual salary as an actress is $35,000. She receives a paycheck every two weeks. What is jillians biweekly salary?
netineya [11]
There are 52 weeks in a year and if she gets paid every two weeks then divide 52 by 2 to get 26 so she would get paid 26 times a year so divide her annual salary by 26 to get $1,346.15 every other week. So her biweekly salary is $1,346.15.
8 0
3 years ago
Read 2 more answers
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