What number has a value less than 14.7?

Alina [70]

Answer:

y = x + 3

Step-by-step explanation:

To know which of the equations represent the relationship between x and y, you need to substitute the x and y values into the equation. If when the equation is solved, the left-hand and right-hand side of the equation equal each other and hence the equation is true, then the equation must be correct in expressing the relationship between the x and y values. If not, then it is not correct.

As this question is only dealing with linear equations, we know that the gradient of the line is constant and hence the rate of change in x and y values is constant. Therefore, we can choose to substitute any of the given combinations of x and y values into the equation to obtain the correct equation. As it is easier to use smaller numbers for smaller calculations, we'll use the first combination of x = 1 and y = 4 .

Equation No. 1 : y = 3x + 1 where x = 1 , y = 4 and x = 2 , y = 5

( 4 ) = 3 ( 1 ) + 1

4 = 4

However, as this equation has a constant not equal to 1 in front of the x variable and hence a different gradient to the other equations, we will substitute the second combination of x and y values.

( 5 ) = 3 ( 2 ) + 1

5 = 6

Therefore, equation is false / incorrect.

Equation No. 2 : y = x + 1 where x = 1 , y = 4

( 4 ) = ( 1 ) + 1

4 = 2

Therefore, equation is false / incorrect.

Equation No. 3 : y = x + 3 where x = 1 , y = 4

( 4 ) = ( 1 ) + 3

4 = 4

Therefore, equation is true / correct.

Equation No. 4 : y = x - 3 where x = 1 , y = 4

( 4 ) = ( 1 ) - 3

4 = - 2

Therefore, equation is false / incorrect.

8 0

3 years ago

What are the solutions to f(x) = 2x^2 – 7x – 15

professor190 [17]

Answer:

$x=-\frac{3}{2}\textrm{ or }x=5$

Step-by-step explanation:

Assuming you want to solve $f(x)=0$ ,

$2x^2-7x-15=0\\(2x+3)(x-5)=0\\x=-\frac{3}{2}\textrm{ or }x=5$

3 0

3 years ago

Expression equivalent to 8c+6-3c-2

larisa86 [58]

8c+ 6 -3c -2
= (8c -3c)+ (6-2)
= 5c+ 4

The final answer is 5c+4~

4 0

4 years ago

Read 2 more answers

If my loan is 234,000 and my interest rate is 5% how much will my monthly payment be

zubka84 [21]

Answer:

4680 I think

Step-by-step explanation:

I divided your loan and interest rate by 5%

6 0

3 years ago

Please help with inequalities and exponentials

zlopas [31]

Answer:

A.b ≤ 40

Step-by-step explanation:

Janice weighs 130 pounds so you must take away his weight from the weight limit (250 pounds). That will give you 120. 120 pounds can still be put on the truck. Since each block weighs 3 pounds, you have to divide 120 divided by 3, giving you 40. Janice can carry up to 40 blocks on the truck each trip.

7 0

3 years ago

What number has a value less than 14.7?​

What number has a value less than 14.7?