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3 years ago

!!!!! PLEASE HELP ME !!!!!

Mathematics

1 answer:

goblinko [34]3 years ago

3 0

Answer:

The correct option is C : x² + (y +3)² = 9 .

Step-by-step explanation:

We know that the general equation for a circle is ( x - h )² + ( y -k )²= r², Where,

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

Let the point be ( 0 , -y) , since it is on negative y axis . And the circle passes through the origin that is (0,0) . Hence the center will be 3 units down the y - axis that is ( 0 , -3) .Hence h will be 0 and y = (-3) .

Now its given that the radius of the circle is 3. So on substituting r = 3 , in standard form we have ,

⇒ ( x -h )² + ( y - k )²= r²

⇒ ( x - 0)² + { y - (-3) }² = 3²

⇒ x² + ( y + 3) ² = 3²

⇒ x² + ( y + 3)² = 9

<h3>Hence the correct option is C [ x² + ( y+3)² = 9 ] .</h3>

Note that I have attached the graph of the same .

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WILL GIVE BRAINLIEST Drag the values into the boxes to classify each number as rational or irrational.

Readme [11.4K]

Answer:

See below ~

Step-by-step explanation:

5/4 = 1/25 ⇒ Rational
√100 = 10 ⇒ Rational
7.3 ⇒ Rational
0.00247 ⇒ Rational
√4/9 = 2/3 = 0.66666... ⇒ Rational
√2/24 = 1/2√1/6 ⇒ Irrational
0.01.... ⇒ Rational

6 0

2 years ago

one bricklayer can build a wall in 6 hours. another bricklayer could build the same wall in 4 hours. if they work together, how

kogti [31]

Hello,

Let's
V1 the velocity of the 1st bricklayer,
V2 the velocity of the 2nd bricklayer,

1wall=V1*6==>V1=w/6
1wall=V2*4==>V2=w/4
==>V1+V2=w/6+w/4=10w*24=5w/12

Let's t the time for the 2 bricklayer to build the wall
(V1+V2)t=w
==>5w/12*t=w
==>t=12/5 (h)=2h24min.

8 0

3 years ago

Can someone show me how to do this please.!?

Andreas93 [3]

Input m = -4 n = 2 and p = 1.5 into the expression above

7m + 2n - 8p/n
= 7(-4) + 2(2) - 8(1.5)/2
= -28 + 4 - 6
= -30

6 0

3 years ago

Rectangle M was dilated to form rectangle M’. What ratio is the scale factor?

Gemiola [76]

Solution:

we are given that

Rectangle M was dilated to form rectangle M’.

we have been asked to find

What ratio is the scale factor?

we can find the required ratio by dividing the corresponding sides of the given rectangles as below:

$Ratio=\frac{6}{4}=\frac{2}{4/3}\\ \\\\$

$Ratio=\frac{3}{2}=\frac{6}{4} \\ \\ \ Ratio=\frac{3}{2}=\frac{3}{2}\\$

Hence the required ratio is 3/2.

7 0

4 years ago

I need the answers for this slide! :( Seriously it's like nothing we learned in class. I don't understand this

gtnhenbr [62]

Hopefully I can explain this well enough..

If you've ever heard of slope, it is the same as constant of proportionality. If you haven't, it's pretty simple to find on a graph. Look where the line perfectly hits the graph numbers by at least two times. So, on the graph, you can see that it goes through (1, 4) and (2, 8). You can find the slope two ways from this point, but I'm not really sure how to explain it just from typing, so I'll explain one the way it's written.

The formula for finding slope is y2-y1/x2-x1. Plugging in the numbers in the equation, it should look like 8-4/2-1, which simplifies to 4. This is the complicated way, so I'm sorry, but if you want to do the graph way, the way it's written is rise/run.

Equations are y=mx+b. m stands for slope and b is the y-intercept. We covered the slope (4), so we just need the intercept. The intercept is just asking where the line goes through y. We can see that it started at 0, so the equation is simply y=4x.

Now onto the second question. I'm a little confused if the number of baskets is x, or if the cost is x... I'm just going to go on and guess that the Number of Baskets is x.

Finding the constant of proportionality is so much easier on this because you can do 12/3 which gets you 4. All of the others have this too, so you know it's 4. In the end, the equation is, once again, y=4x.

So, in the end, these should and hopefully be the correct answers:

Constant of Proportionality: 4

Equation: y=4x

Constant of Proportionality: 4

Equation: y=4x

7 0

3 years ago