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V125BC [204]
3 years ago
12

Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0
In step one, you are supposed to add 25 to both sides, because if you just subtract, it would be -5x-50=53
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Please help<br><br>4(4+2x)=x(x+5)​
lapo4ka [179]

Answer:

EF = 6

Step-by-step explanation:

Using the secant- secant power theorem, that is

GF × GE = GH × GS

4(4 + 2x) = 5(5 + x) ← distribute both sides

16 + 8x = 25 + 5x ( subtract 5x from both sides )

16 + 3x = 25 ( subtract 16 from both sides )

3x = 9 ( divide both sides by 3 )

x = 3

Then

EF = 2x = 2 × 3 = 6

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2 years ago
Free brainliest and extra points here!!<br><br> Who's is your bias from EXO and ATEEZ?
grandymaker [24]

Answer:

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sweet [91]

??? what steps are you talking about. lol

6 0
3 years ago
( 8 x 400 ) + ( 8 x 9 )
Over [174]

Answer:

3,272

Step-by-step explanation:

8 x 400 = 3200

8 x 9= 72

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5 0
2 years ago
Neveah has created the function of f(x) = 2x+4/3 to represent the growth of her hair, where x represents the number of months si
Andre45 [30]
F(x)=2x+4/3

Replace f(x) by y:
y=2x+4/3

Solving for x:
y-4/3=2x+4/3-4/3

Subtracting the two terms on the left side of the equation:
(3y-4)/3=2x

Dividing both sides of the equation by 2:
[(3y-4)/3]/2=2x/2
[(3y-4)/3]*(1/2)=x
[(3y-4)*1]/[(3)*(2)]=x
(3y-4)/6=x
x=(3y-4)/6

Replace "x" by "f^(-1) (x)" (inverse function) and "y" by "x":
f^(-1) (x) = (3x-4)/6   Inverse function

Then, for x=6 
f^(-1) (6) = [ 3(6)-4]/6
f^(-1) (6) = (18-4)/6
f^(-1) (6)= 14/6
f^(-1) (6) = 7/3

Her hair will have grown 6 after 7/3 = 2.33 months


3 0
3 years ago
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