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3 years ago

BNHA 297 Preview:

Mathematics

2 answers:

Tamiku [17]3 years ago

8 0

Answer:

Its not over yet

Step-by-step explanation:

Mekhanik [1.2K]3 years ago

3 0

Answer:

I forgot but stuff TwT

Step-by-step explanation:

Don't forget important information TwT

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A circle passes through point (-2, -1) and its center is at (2, -1). Which equation represents the circle?

ludmilkaskok [199]

The choices are missing, but we can solve the problem from the given information

Answer:

The equation which represents the circle is (x - 2)² + (y + 1)² = 16

Step-by-step explanation:

The form of the equation of a circle is (x - h)² + (y - k)² = r², where

(h , k) are the coordinates of its center
r is the radius of it

∵ The coordinates of the center of the circle are (2 , -1)

∴ h = 2 and k = -1

The radius of the circle is the segment whose join the center of the circle and any point on the edge of the circle

∵ The circle passes through point (-2 , -1)

∴ The radius of the circle is the distance from the center (2 , -1)

and the point (-2 , -1)

The y-coordinates of the two points are equal that means the radius is a horizontal segment and its length is the difference between their x-coordinates

∵ r = 2 - (-2)

∴ r = 4

Now let us substitute h, k, and r in the form of the equation of the circle

∵ (x - 2)² + (y - -1)² = (4)²

∴ (x - 2)² + (y + 1)² = 16

The equation which represents the circle is (x - 2)² + (y + 1)² = 16

7 0

3 years ago

In a field of ducks and a dog someone counted 25 heads and 80 legs. How many dogs and ducks are there

brilliants [131]

Ducks have 1 head. Dogs have 1 head.
Ducks have 2 feet. Dogs have 4 feet.

If x = no. of ducks and g = no. of dogs

x + g = 25
2x + 4g = 80

Let's use substitution to solve.

x + g = 25 ⇒ x = 25 - g
replace x with 25 - g in the other equation and solve for g

2x + 4g = 80
2(25 - g) + 4g = 80
50 - 2g + 4g = 80
50 + 2g = 80
2g = 30
g = 15

Now use g = 15 in an earlier equation to find x.

x + g = 25
x + 15 = 25
x = 10

6 0

3 years ago

Read 2 more answers

What is the location of point F, which partitions the directed line segment from D to E into a 5:6 ratio? Negative one-eleventh

Elden [556K]

The location of point F, which partitions the directed line segment from D to E into a 5:6 ratio is $\frac{1}{11}$ .

The given parameters:

<em>Partition of the line segment = 5:6</em>

The total segment of the directed line segment from D to E in the given ratio of 5:6 is calculated as follows;

total segment = 5 + 6 = 11

The value of each partition on the directed line segment is calculated as follows;

$partition = \frac{1}{11} \times distance$

The distance between point D and point E is calculated as follows;

$D = 5 - (-4)\\\\D = 5 + 4\\\\D = 9$

The partition of the two points (D to E) is calculated as follows;

$partition = \frac{1}{11} \times 9 = 0.82$

Thus, we can conclude that, the location of point F, which partitions the directed line segment from D to E into a 5:6 ratio is $\frac{1}{11}$ .

Learn more about partition of line segments here: brainly.com/question/4429522

6 0

2 years ago

Read 2 more answers

Helpppp pleaseeeeeee

aalyn [17]

For this case we have the following expression:

$(3x + 8) (3x-3)$

We apply distributive property, which by definition establishes that:

$(a + b) (c + d) = ac + ad + bc + bd$

So:

$(3x + 8) (3x-3) =\\9x ^ 2-9x + 24x-24 =\\9x ^ 2 + 15x-24$

Answer:

$9x ^ 2 + 15x-24$

7 0

3 years ago

Read 2 more answers

Jessica deposits her summer babysitting earnings, $600, in a savings account. How many years will it take her to earn $150 in in

aev [14]

:) done ur welcome now give me brainliest........................................................................................................................................................................................................................................................

5 0

3 years ago