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2 years ago

Which relation defined by a mapping diagram is not a function?

1 answer:

3 0

If one element in the domain mapped with more then one element in the range, the mapping is called one-to-many relation. One-to-many relations are not functions. Example: Draw a mapping diagram for the function f(x)=2x2+3 in the set of real numbers.

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Help what is the equation

Hitman42 [59]

Answer:

y=-5x

Step-by-step explanation:

take two points, I took 0,4 and 1-,1 and do

y2-y1 over x2-x1

3 0

2 years ago

Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly $240 in interest aft

RoseWind [281]

Answer:

D. $5,000

Step-by-step explanation:

The amount of money he should deposit is the principal.

The principal P can be gotten by

P = 100 I /RT

Where

I = interest

R = rate

T = Time

Given

I = $240

R = 1.6%

T = 3 yrs

P = 100 x 240 /1.6 x 3

Multiply through

= 24000/4.8

= $5000

5 0

2 years ago

Explain how to do (2^-2/3^3)^4 i need to know how to do this.

cricket20 [7]

Answer:

((2^(-2))÷(3^3))^4=

Step-by-step explanation: expand

5 0

2 years ago

Can someone help please

m_a_m_a [10]

Answer:

What do you need help with?

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Y = 4x+1 y=x^2 + 2x - 2 A.6,2 B. 2,6 C. -6,2 D. -6,-2

natta225 [31]

Answer:

The solution is (3,13) and (-1,-3). So none of the mentioned options is correct.

Step-by-step explanation:

Given that

$y = 4x + 1 (i)$

$y = x^2 + 2x -2 (ii)$

Now, by susbstituting the value of 'y' from equation i to equation ii, we get

$4x+1=x^2 + 2x -2$

$0=x^2 + 2x -2-4x-1$

$0=x^2 + (2x -4x) +(-2-1)$

$0=x^2 + (-2x) +(-3)$

$0=x^2 -2x -3$

$x^2 -2x -3 = 0 (iii)$

Now by factorization, equation iii can be written as

$x^2 -3x +x -3 = 0$

$x(x -3) + 1(x -3) = 0$

$(x -3)(x +1) = 0$

x = 3 and x = -1

By putting the values of x in equation i, we get

y = 4(3) + 1

y = 12 +1

y = 13

and

y = 4(-1) + 1

y = -4 +1

y = -3

Therefore, the solution is (3,13) and (-1,-3). So none of the mentioned options is correct.

7 0

2 years ago