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Anastaziya [24]
4 years ago
12

Evaluate the Expression -1²

Mathematics
1 answer:
galben [10]4 years ago
5 0

Answer:

-1

Step-by-step explanation:

-1² = -1 * -1 = - 1

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tamaranim1 [39]

Answer:

  • The function is injective but nor surjective

Step-by-step explanation:

<u>We see that:</u>

  • f(x) = x³

<u>For any x₁ and x₂ ∈ N, </u>

  • f(x) = x₁³ = x₂³ ⇒ x₁ = x₂, both are natural numbers

It it confirmed one-to-one, hence it is injective

<u>Check the surjectivity:</u>

f(x) = y ∈ N

  • x³ = y
  • y = ∛x

<u>Let y = 2, then:</u>

  • 2 = x³
  • x = ∛2 ∉ N

Since x is not natural, the function is not surjective

6 0
3 years ago
Read 2 more answers
(1) Find the value of x in the figure below. Show all steps.( left picture)
uranmaximum [27]
This is the concept of geometry, given that the angle 52 and (2x) have been subtended by a circle, then:
2x=2(52)
2x=104
solving for x we get:
x=104/2
x=52
the answer is x=52°
6 0
3 years ago
What is the equation of the slope which is 2 and (1‚8)
sergey [27]

Answer:

y=2x+6

Step-by-step explanation:

Graph the coordinates

Go up to over one or down two left on

Get your y-intercept

put in y=mx+b

6 0
3 years ago
700 is 2 parts in the ratio 3:2, how much would 3 parts be?
Ad libitum [116K]

answer:

3 parts will be 420

explanation:

total ratio: 3 + 2 = 5

5 ➳ 700

1 ➳ 700/5

1 ➳ 140

solve for 3 : 2

3 ➳ 140 * 3 = 420

2 ➳ 140 * 2 = 280

5 0
2 years ago
Read 2 more answers
Help please!
Alina [70]

Step-by-step explanation:

Given

f(x) = 8x - 9

Then

For a.

f(3y - 1 ) = 8(3y - 1 ) - 9

= 24y - 8 - 9

= 24y - 17

Now for b.

f(x) = - 23

or, 8x - 9 = - 23

8x = - 23 + 9

8x = - 14

x = - 14 / 8

x = - 7 / 4

Hope it will help :)

7 0
3 years ago
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