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2 years ago

Which students write the correct express

Mathematics

1 answer:

Lyrx [107]2 years ago

5 0

Answer: Madison is correct.

Step-by-step explanation:

4(2x+3y−5z)

=(4)(2x+3y+−5z)

=(4)(2x)+(4)(3y)+(4)(−5z)

=8x+12y−20z

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Find the center and radius of this

ipn [44]

$\text{Hello there! :)}$

Answer:

$\boxed{\text{Center at } (7, -4), \text{ Radius of } 7.}$

$\text{Formula for a circle: } (x - h)^{2} + (y - k)^{2} = r^{2} \text{ Where:}$

$h = \text{ x-coordinate of center}\\\\k = \text{ y-coordinate of center}\\\\r = \text{ radius}\\\\\text{Therefore:}$

$\text{In the equation } (x - 7)^{2} + (y + 4)^{2} = 49:$

$h = 7\\\\k = -4\\\\r = \sqrt[]{49} = 7 \\\\\text{So:}$

$\text{Center at } (7, -4), \text{ Radius of } 7.$

3 0

3 years ago

Read 2 more answers

F(x)=- x ^ 2 - 1,x ne5\\ -3,x=5 lim x -> 5 f(x) = lim x -> 5 f(x) Find if

Wewaii [24]

Answer:

the answer to the question is 1

3 0

1 year ago

What is the slope of this

Sveta_85 [38]

Answer:

Step-by-step explanation:

x = (0.5,0)

y= (0,-3)

slope = 2

5 0

2 years ago

Explain: What is the solution to this system of equations? <br><br> 2x+y=20 <br> 6x-5y=12

bazaltina [42]

Answer:

solution set is (x,y) = (7,6)

Step-by-step explanation:

solving by substitution method

2x +y=20--------------1

6x-5y=12---------------2

from equation 1, solve for y

2x+y=20

y= 20-2x------equation 3

adding value of y in equation 2

6x-5y=12

6x-5(20-2x)=12

6x-100+10x=12

16x= 12+100

16x= 112

x= 112/16

x=7

adding value of x in equation 3

y= 20-2x

y= 20- 2(7)

y=20-14

y=6

so solution set (x,y) = (7,6)

3 0

3 years ago

Intermediate algebra. please help to solve

BARSIC [14]

7x = -36+10x

X=12
You minus the 10 from 7 (7-10=-3) (-36/-3) gives you 12

6 0

3 years ago