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3 years ago

I need help .........

Mathematics

2 answers:

dezoksy [38]3 years ago

7 0

What’s the question

AlekseyPX3 years ago

6 0

Answer:

Step-by-step explanation:

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.

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HELP! Identify the equation of the circle that has its center at (-3, -4) and passes through the origin.

Lunna [17]

Answer:

Option B. (x+3) ^2+(y+4)^2=25

Step-by-step explanation:

we know that

The equation of the circle in standard form is equal to

$(x-h)^{2}+(y-k)^{2}=r^{2}$

where

(h,k) is the center and r is the radius

step 1

Find the radius of the circle

Remember that the distance of the center and any point on the circle is equal to the radius of the circle

Find the distance between the points (-3,-4) and (0,0)

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

substitute

$r=\sqrt{(0+4)^{2}+(0+3)^{2}}$

$r=\sqrt{(4)^{2}+(3)^{2}}$

$r=\sqrt{25}$

$r=5\ units$

step 2

Find the equation of the circle

$(x-h)^{2}+(y-k)^{2}=r^{2}$

the center is the point (-3,-4) and the radius is r=5 units

substitute

$(x+3)^{2}+(y+4)^{2}=5^{2}$

$(x+3)^{2}+(y+4)^{2}=25$

6 0

3 years ago

For each direct variation find the constant of variation then find the value of Y when X equals -0.5. Y equals 2 when X equals 3

Readme [11.4K]

For direct variation y varies directly with x, then we use equation y = kx

Where k is the constant of proportionality

Given: Y equals 2 when X equals 3

We plug in 3 for x and 2 for y and solve for k

y = kx

2 = k(3)

Divide both sides by 3

$\frac{2}{3} =k$

Now we plug in 2/3 for k

$y=\frac{2}{3}x$

Given x=-0.5 and find out y

$y=\frac{2}{3}(-0.5)$

y=-0.33

the value of y is -0.33 when x=-0.5

4 0

3 years ago

PLEASEEE HELP Also please don’t send me a link for the answer

Solnce55 [7]

See the image for details

6 0

3 years ago

Is the following relation a function? Yes or No question

Maurinko [17]

Yes because the the x value is not repeated. It can not be a function if the arrow in one of the x values is pointing to more than one y value.

Hope this helps :)
Please give brainliest

3 0

4 years ago

Melissa bought 42 pine seedlings and 30 juniper seedlings

hram777 [196]

Answer:

See below

Step-by-step explanation:

GCF (greatest common factor ) of 42 and 30 is 6

each row will have 6 seedlings

there will be ( 42+30) / 6 = 12 rows

7 pine rows 5 juniper rows

8 0

2 years ago

I need help .........​

I need help .........