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3 years ago

Please help me with this difficult question?!!

Mathematics

1 answer:

Goryan [66]3 years ago

5 0

Answer:

Step-by-step explanation:

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Which equation represents a circle that contains the point (-5, -3) and has a center at (-2, 1)?

oksian1 [2.3K]

Answer:

(x+1)2+(y−2)2=5

Explanation:

The general form for a circle with center

(a,b) and radius r is XXX(x−a)2+(y−b)2=r2

With center (−1,2) and given that (0,0) is a solution (i.e. a point on the circle),according to the Pythagorean Theorem: XXX r 2=(−1−0)2+(2−0)2=5

and since the center is (a,b)=(−1,2)by applying the general formula we get:XXX(x+1)+(y−2)2=5

Step-by-step explanation:

its already in the answer

3 0

3 years ago

A student started out poorly on his first mathematics test. However, he doubled his score on each of the next two tests. The thi

dsp73

His score is 50

How to:
First test grade:0
Second test grade:50
Third test grade: 100
Add all three and divide by 3

6 0

3 years ago

Which equation is a point slope form equation for line AB?

sukhopar [10]

Answer:

option 1

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = A(1, 6) and (x₂, y₂ ) = B(5, - 2)

m = $\frac{-2-6}{5-1}$ = $\frac{-8}{4}$ = - 2

Use either of the 2 points for (a, b)

Using (a, b) = (5, - 2) , then

y - (- 2) = - 2(x - 5) , that is

y + 2 = - 2(x - 5)

3 0

4 years ago

Solving steps and answer!

Studentka2010 [4]

Answer:

$h = 162.0\ cm$

Step-by-step explanation:

Given

$BSA = \frac{\sqrt{w*h}}{60}$

Required

Find h, when BSA = 1.5 and w = 50

We have:

$BSA = \frac{\sqrt{w*h}}{60}$

Substitute 1.5 for BSA and 50 for w

$1.5 = \frac{\sqrt{50*h}}{60}$

Multiply both sides by 60

$60*1.5 = \frac{\sqrt{50*h}}{60}*60$

$60*1.5 = \sqrt{50*h$

$90 = \sqrt{50*h$

Square both sides

$90^2 = (\sqrt{50*h})^2$

$90^2 = 50*h$

$90^2 = 50h$

$8100 = 50h$

Divide both sides by 50

$\frac{8100}{50} = \frac{50h}{50}$

$\frac{8100}{50} = h$

$162 = h$

$h = 162$

$h = 162.0\ cm$

<em>Hence, the patient's height is 162.0cm</em>

4 0

3 years ago

Name the binomial you can multiply by (x 9) to get the product x^2 5x - 36.

Mars2501 [29]

If you would like to solve (x^2 + 5x - 36) / (x + 9), you can do this using the following steps:

a = ?
(x + 9) * (x + a) = <span>(x^2 + 5x - 36)
x^2 + ax + 9x + 9a = x^2 + 5x - 36
ax + 9x = 5x
a + 9 = 5
a = 5 - 9
a = - 4

The correct result would be c. x - 4.</span>

4 0

3 years ago