3 years ago

Need help understanding

Mathematics

2 answers:

pav-90 [236]3 years ago

7 0

It's 180-(48+42)= X It's a 90 Degree angle

zvonat [6]3 years ago

4 0

The sum of all angles in a triangle should equal 180.

180 - 48 - 42 = 90.

x = 90 degrees.

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patriot [66]

Answer:

2143-764=1379

Step-by-step explanation:

6 0

3 years ago

The equation y=2(x-1)^2-5y=2(x−1)

marin [14]

Answer:

(b) It is symmetrical about $x = 1$

Step-by-step explanation:

Given

$y = 2(x - 1)^2 - 5$

See attachment for options

Required

True statement about the graph

First, we check the line of symmetric

$y = 2(x - 1)^2 - 5$

Expand

$y = 2(x^2 - 2x + 1) - 5$

Open bracket

$y = 2x^2 - 4x + 2 - 5$

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A quadratic equation $y = ax^2 + bx + c$ has the following line of symmetry

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By comparison, the equation becomes:

$x = -\frac{-4}{2*2}$

$x = \frac{4}{4}$

$x = 1$

Hence, the line of symmetry is at: $x = 1$

(b) is true.

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3 years ago

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nikitadnepr [17]

The scale factor is 3 because the units of segments are given equally to us.

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Step-by-step explanation:

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3 years ago

Write the equation of the line from the graph<br> (show your work pls)

Ratling [72]

It is just y=-4 since the line is horizontal

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3 years ago