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4 years ago

Please help me with these two questions, Thanks;) ONLY IF YOU KNOW THE ANSWERS

Mathematics

2 answers:

Leya [2.2K]4 years ago

8 0

Number 9 is A and number 10 is D

Ivanshal [37]4 years ago

4 0

The first one is A
because:
34 divided by 10 is equal to 3 remain 4

the second one is D
because:
-4 is smaller than -2
-2 is smaller than 8

so the answer is -4 < -2 < 8 which equals to 8 > -2 > -4

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Find the vertex and axis of symmetry for f(x)=2x^2-1

vfiekz [6]

<h3>Axis of symmetry is 0 and vertex is (0, -1)</h3>

Solution:

Given is:

$f(x) = 2x^2 - 1$

We have to find the vertex and axis of symmetry

The general equation is given as:

$f(x) = ax^2 + bx + c$

Comparing with given equation,

a = 2

b = 0

c = -1

The axis of symmetry is given as:

$x = \frac{-b}{2a}$

$x = \frac{0}{2(2)}\\\\x = 0$

Thus axis of symmetry is 0

The x coordinate of the vertex is the same

x coordinate of the vertex = 0

h = 0

The y coordinate of the vertex is:

k = f(h)

k = f(0)

$f(0) = 2(0) - 1\\\\f(0) = 0 - 1\\\\f(0) = -1$

Thus, y coordinate of the vertex is -1

Therefore, vertex is (0, -1)

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3 years ago

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tresset_1 [31]

Cost times 1.28 gives total cost

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3 years ago

A line is a set of all points that:

natita [175]

A line is a set of all points that : C. are the same distance from two points.

Step-by-step explanation:

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Definition of a line:brainly.com/question/1592203

Keywords: line, set , points

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3 years ago

What are the new coordinates of the figure above if it is rotated 90 degrees clockwise about the origin ?

xeze [42]

Answer: A

Step-by-step explanation: