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ollegr [7]
3 years ago
9

What is 6x-5y=22 y= -8

Mathematics
2 answers:
densk [106]3 years ago
8 0
6x-5y=22

1.) factor the y into the equation So it’ll be 6x-5(-8)=22

2. Solve the equation of -5*-8 = 40

3. The new equation is 6x+40=22

4. Subtract from both sides 22-40 = -18

5. The new equation is 6x=-18

6. Now we have to get x by itself to find its value, so divide by 6 on both sides. 6x/6 = x
And -18/6 = -3

So the value of x is -3
tigry1 [53]3 years ago
5 0
Just plug it in
So -5 times times -8 = positive 40 so
6x +40 =22
No it’s just an easy equation
22-40= -18
-18 divided by 6 = -3
So x = - 3
Your x,y coordinates are
(-3,-8)
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According to a survey of 1000 families of any town in 2010 A.D.,794 families have radio and 187 families have television.lf 63 f
hjlf

Answer:

Number of families will have both radio and television = 44

Step-by-step explanation:

Given:

Number of family have radio = 794

Number of family have TV = 187

Number of family haven't both = 63

Find:

Number of families will have both radio and television

Computation:

Number of families will have Tv or radio = 1,000 - 63

Number of families will have Tv or radio = 937

Number of family have one of them = 794 + 187

Number of family have one of them = 981

Number of families will have both radio and television = 981 - 937

Number of families will have both radio and television = 44

4 0
3 years ago
Given the functions f (x) = x^2 + 4 and g (x) = 3x+ 8 what is a solution for the equation ? x^2 + 4 = 3x + 8 A. 0 B. 1 C. 2 D. 4
k0ka [10]

Answer:

D

Step-by-step explanation:

Let's solve your equation step-by-step.

x2+4=3x+8

Step 1: Subtract 3x+8 from both sides.

x2+4−(3x+8)=3x+8−(3x+8)

x2−3x−4=0

Step 2: Factor left side of equation.

(x+1)(x−4)=0

Step 3: Set factors equal to 0.

x+1=0 or x−4=0

x=−1 or x=4

Answer:

x=−1 or x=4

6 0
3 years ago
Which of the following best describes the equation below?
sergiy2304 [10]

Answer:

both linear and nonlinear

5 0
3 years ago
If the infinite curve y = e−6x, x ≥ 0, is rotated about the x-axis, find the area of the resulting surface.
Ber [7]
The area:
A = 2  \pi  \lim_{b\to \infty} ( \int\limits^\infty_0 {e ^{-6x} } \, dx)
Substitution: u = - 6 x
du = - 6 dx
dx = -1/6 du
∫ -1/6 e^(u) du = - 1/6 e^(u) = - 1/6 e^(-6x)
A = -1/6 * 2 \pi   \lim_{b \to \infty}  (\int\limits^\infty_0 \, e ^{-6b} db) = \\ =- \pi /3 * ( e ^{-\infty} -e ^{0}) =  \\ = - \pi /3 * ( - 1 ) =
=  π / 3

4 0
3 years ago
What is the equation of the circle shown?
Mkey [24]

Answer:

(x + 4)² + (y - 2)² = 8

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k ) = (- 4, 2 ) , then

(x - (- 4))² + (y - 2)² = r²

(x + 4)² + (y - 2)² = r²

CA is the radius of the circle

To find r use the distance formula

r = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = C(- 4, 2) and (x₂, y₂ ) = A(- 2, 4)

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

  = \sqrt{2^2+2^2}

  = \sqrt{8} , then r² = (\sqrt{8} )² = 8

Then

(x + 4)² + (y - 2)² = 8 ← equation of circle

5 0
3 years ago
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