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serg [7]
3 years ago
7

F-1(x) = -5(x + 8) what is my domain?can someone review my answer?​

Mathematics
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

x=-10 - F/4

Step-by-step explanation:

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Hallar la ecuación de la recta que pasa por el punto P(-3,-1) y por el punto de intersección de las rectas 2x − y = 9 y 3x − 7y
adell [148]

Answer:

y = -1

Step-by-step explanation:

The standard form of equation of a line is y = mx+b

m is the slope

b is the y intercept

Get the coordinate of the point of interception of the line 2x - y = 9 and 3x - 7y = 19

Make y the subject of the formula in both expressions

For 2x  - y = 9

- y = 9- 2x

y = 2x - 9

Similarly for 3x - 7y = 19

-7y = 19 - 3x

7y = 3x - 19

y = 3/7 x - 19/7

Equating both expressions

2x - 9 = 3/7 x - 19/7

Multiply through ny 7

14x - 63 = 3x - 19

14x - 3x = -19 + 63

11x = 44

x = 44/11

x = 4

Since y =2x - 9

y = 2(4) - 9

y = 8-9

y = -1

Hence the coordinate of intersection is at (4, -1)

Get the equation of the line passing through (-3, -1) and (4, -1)

Slope m = -1+1/4+3

m = 0/7

m = 0

Get the intercept

Substitute m = 0 and (-3, -1) into y = mx+b

-1 = 0(-3) + b

-1 = b

b = -1

Get the required equation

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y = -1

Hence the required equation is y = -1

4 0
2 years ago
Eqation for half of the difference of 25 and 7
romanna [79]

Answer:

25-7 / 2

Step-by-step explanation:

5 0
3 years ago
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The length of a rectangle is 5 inches more than 3 times the width. If the area of the rectangle is 68 square inches, what is the
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Answer:

Width=4, and Length=17

Step-by-step explanation:

first you will make a variable for the width which i will say is x

now make it an equation (3x+5) (x) = 68

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then 3x^2+5x-68=0

then x=4

then you have to substitute so 3(4)+5= 17 and 4

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3 years ago
Brielle’s piggy bank has all nickels and dimes. The total value of the money in her piggy bank is $7.80. If Brielle
deff fn [24]

66*0.5=3.30

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