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3 years ago

I need to know the steps on how to do it

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

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QUESTION 10

zepelin [54]

Answer:

A circle.

Step-by-step explanation:

This is a circle of radius of √25 = 5.

The centre of the circle is the origin (0, 0).

8 0

3 years ago

The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 .

stellarik [79]

Ratio of the radii = sqrt16 / sqrt81 = 4/9

so radius of circle Q is found by solving 4/9 = 8/x where x = radius of Q

x = 2*9 = 18

radius of circle Q = 18.

6 0

3 years ago

Pllllllllllllllllllllleasee one guys i neeed ur help one

Svetllana [295]

${ \qquad\qquad\huge\underline{{\sf Answer}}}$

Let's solve ~

Calculate discriminant :

$\qquad \sf \dashrightarrow \: 3 {x}^{2} + 6x - 1$

a = 3
b = 6
c = 1

$\qquad \sf \dashrightarrow \: discriminant = {b}^{2} - 4ac$

$\qquad \sf \dashrightarrow \: d = (6) {}^{2} - (4 \times 3 \times 1)$

$\qquad \sf \dashrightarrow \: d = 36 - 12$

$\qquad \sf \dashrightarrow \: d = 24$

$\qquad \sf \dashrightarrow \: \sqrt {d} = 2 \sqrt{6}$

Now, let's calculate it's roots ( x - intercepts )

$\qquad \sf \dashrightarrow \: x = \cfrac{ - b \pm \sqrt{d} }{2a}$

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6\pm 2 \sqrt{6} }{2 \times 3}$

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6\pm 2 \sqrt{6} }{6}$

So, the intercepts are :

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6 - 2 \sqrt{6} }{6}$

and

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6 + 2 \sqrt{6} }{6}$

5 0

1 year ago

Read 2 more answers

Phil collected data from several of his friends about the number of hours they spent sleeping and the number of hours they spent

Virty [35]

Answer:

Step-by-step explanation:

plz give brainliest i have never got it

5 0

3 years ago

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How would you convince a fellow student that the number 0.57 is a rational number? (5+ sentences please) Please help me with thi

Gre4nikov [31]

Answer: 0.57 = 57/100 this means it has to be rational.

Explanation: You have to explain to them that any number that can be written in fraction form is a rational number. This includes integers, terminating decimals, and repeating decimals as well as fractions. An integer can be written as a fraction simply by giving it a denominator of one, so any integer is a rational number.

7 0

3 years ago

Read 2 more answers