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tangare [24]
3 years ago
11

Need the awnser for 8 and 9 please help

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

12-5xy and 5r-7

Step-by-step explanation:

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What is the radius for the circle given by the equation x^2+(y-3)^2=21
lina2011 [118]

Answer:

4.583

Step-by-step explanation:

Equation of a circle is:

(x − h)² + (y − k)² = r²

where (h, k) is the center of the circle and r is the radius.

x² + (y − 3)² = 21

The center of the circle is (0, 3), and the radius is √21, or approximately 4.583.

7 0
4 years ago
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How many solutions does the following system of equations have?<br> v=3x +2<br> 2v=5x+8
Alja [10]

Answer:

The answer is C, zero solutions.  

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Multiply 2 to the first equation.  

2y = 5x + 4

Compare it with the other equation

2y = 5x + 4

2y = 5x + 8

Cancel 2y and 5x on both sides.  

Remaining:

4 = 8

4 ≠ 8.  Therefore, the answer is C, zero solutions.  

4 0
4 years ago
To synthesize information regarding when books were written, Alex should create a
Ilia_Sergeevich [38]
I believe the correct answer from the choices listed above is option A. To synthesize information regarding when books were written, Alex should create a timeline. <span>A </span>timeline<span> is a way of displaying a list of events in chronological order. Hope this answers the question. Have a nice day.</span>
8 0
3 years ago
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Triangle ABC has vertices at A(−3, 4), B(4, −2), C(8, 3). The triangle translates 2 units up and 1 unit right. Which rule repres
Nataly [62]

Answer:

The translation statement is given by:

(x,y)\rightarrow (x+1,y+2)

After the translation, the coordinates of vertex A is (-2,6).

Step-by-step explanation:

Given :

Vertices of a triangle ABC are:

A(−3, 4), B(4, −2), C(8, 3)

The triangle is translated 2 units up and 1 unit right.

To find the co-ordinates of point A after translation.

Translation rules.

For shift of c units up, the translation is given as:

(x,y)\rightarrow (x,y+c)

For shift of k units right, the translation is given as:

(x,y)\rightarrow (x+k,y)

So, it says the triangles is translated 2 units up and 1 unit right.

The translation statement is given by:

(x,y)\rightarrow (x+1,y+2)

So, co-ordinates of point A after translation is given by :

(-3,4)\rightarrow (-3+1,4+2)=(-2,6)

After the translation, the coordinates of vertex A is (-2,6).

4 0
4 years ago
Jared is scheduled to work for 5/6 of an hour at the school fair. He has already worked 1/3 of an hour. How much longer does he
Cloud [144]
The answer is D

Because
5/6 - 1/3
=5/6 - 2/6
=3/6
=1/2h
4 0
3 years ago
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