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3 years ago

Can someone help me with this plz and thank u

Mathematics

1 answer:

Paul [167]3 years ago

5 0

Answer:

1. B

2.C

3.A

4.C

5. B

6.D (because all the other ones are wrong and i cant see D)

i hope this helped!! :)

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What is the general form of the equation for the given circle?

ludmilkaskok [199]

Coordinates of the center: ( 4, 4 )
The radius: r = 7 - 4 = 3
The equation of a circle:
( x - 4 )² + ( y - 4 )² = 3²
x² - 8 x + 16 + y² - 8 y + 16 = 9
x² + y² - 8 x - 8 y + 32 - 9 = 0
Answer:
A ) x² + y² - 8 x - 8 y + 23 = 0

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4 years ago

Reduce to lowest term. 2x^2- 18/x^2+4x-21

Dovator [93]

Answer:

$\frac{2(x+3)}{x+7}$

Step-by-step explanation:

Given

$\frac{2x^2-18}{x^2+4x-21}$ ← factorise numerator and denominator

2x² - 18 ( factor out 2 from each term )

= 2(x² - 9) ← difference of 2 squares

= 2(x - 3)(x + 3)

and

x² + 4x - 21 = (x + 7)(x - 3) , then

= $\frac{2(x-3)(x+3)}{(x+7)(x-3)}$ ← cancel common factor (x - 3) on numerator/ denominator

= $\frac{2(x+3)}{x+7}$

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3 years ago

Parallelogram ABCD is a rectangle.

viktelen [127]

Answer:

$AC=BD$

$AB\perp BC$

Step-by-step explanation:

A parallelogram is a quadrilateral (4-sided polygon) that has two pairs of parallel sides.

In this sense, this figure shows a especial parallelogram called <u>rectangle</u>, since its four sides form right angles ( $90\°$ ).

Hence:

$AB\parallel DC$

$AD\parallel BC$

$AB=DC$

$AD=BC$

$AB\perp BC$

$AD\perp DC$

So, the correct choices among the given options are:

$AC=BD$

$AB\perp BC$

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3 years ago

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The length of a side of a cube can be determined

seraphim [82]

Answer:

Side of cube = 4 cm

Step-by-step explanation:

Given:

Volume of cube = 64 cm³

Find:

Side of cube

Computation:

Volume of cube = side³

64 = side³

Side of cube = 4 cm

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3 years ago

What is the missing justification?

Vladimir [108]

Answer:

The missing justification is the transitive property.

Step-by-step explanation:

The missing justification is the transitive property. The transitive property states that: If a = b and b = c, then a = c.

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4 years ago