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Fiesta28 [93]
3 years ago
13

Which equation is a function of x?

Mathematics
2 answers:
zysi [14]3 years ago
8 0
I think it x = 5 but I don’t remember much
Zina [86]3 years ago
5 0
X = 5 is the correct answer I’m pretty sure
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What are the solutions to the system of equations?<br> y = 2x² + 6x - 10<br> \ y =<br> y = -x + 5
Akimi4 [234]

Answer:

x= 1.5, y= 3.5

or x= -5, y= 10

Step-by-step explanation:

Let's solve by substitution.

Label the two equations:

y= 2x² +6x -10 -----(1)

y= -x +5 -----(2)

Substitute (2) into (1):

2x² +6x -10= -x +5

2x² +6x +x -10 -5= 0

Simplify:

2x² +7x -15= 0

Factorise:

(2x -3)(x +5)= 0

2x -3= 0 or x +5= 0

2x= 3 or x= -5

x= 1.5

Now that we have found the value of x, we can find the value of y through substitution.

Substitute into (2):

y= -1.5 +5 or y= -(-5) +5

y= 3.5 or y= 10

Supplementary:

Do check out the following should you wish to learn more about solving quadratic equations!

  • brainly.com/question/12187987

3 0
2 years ago
What is the value of 5.7 x 10^8?
irina [24]
5.7 x 10^8 is known as the scientific notation.Scientific notation is one way of showing a long number to a shorter one given with the followin choices, let's find out which one of those are correct: 
=> 5.7 x 10^ 8
=> 5.7 x (10 x 10 x 10 x 10 x 10 x 10 x 10 x 10) 
=> 5.7 * 100 000 000 
=> 570 0000 000 or 5 hundred seventy milionThe correct answer is letter C. 570 000 000
6 0
3 years ago
Read 2 more answers
Is this linear relationship a direct variation?
Talja [164]

Since the ratio of of second variable to the ratio of first variable remains constant i.e y/x =8 so, the linear relationship is direct variation.

Step-by-step explanation:

A relationship is said to have direct variation if ratio of second variable to the ratio of first variable remains constant.

A relationship is direct variation if y=kx\,\,or\,\, \frac{y}{x} =k where k is the constant.

Now checking if the given data is having direct variation or not.

x       y

3       24

4       32

5       40

6       48

Now finding y/x

if y=24 and x = 3 then y/x = 24/3 = 8

if y=32 and x = 4 then y/x =32/4=8

if y=40 and x = 5 then y/x =40/5 =8

if y=48 and x = 6 then y/x =48/6= 8

Since the ratio of of second variable to the ratio of first variable remains constant i.e y/x =8 so, the linear relationship is direct variation.

Keywords: Direct Variation

Learn more about Direct Variation at:

  • brainly.com/question/10708697
  • brainly.com/question/2495851
  • brainly.com/question/5069437

#learnwithBrainly

5 0
3 years ago
B. 5 times the sum of 7 and 23​
Lynna [10]

5 (7 + 23)

(Use distributive property to solve)

1. 5*7 + 5*23

2. 35 + 115

3. 150

7 0
4 years ago
Read 2 more answers
Write a python function that computes the area of an equilateral triangle given the length of one of its sides. search for a mat
Murljashka [212]
Area = (√3)/4 * s² (S = Any side of the Equilateral Triangle)

7 0
4 years ago
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