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3 years ago

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Anthony worked to earn $25.00. Joyce worked for $8.00 per hour. If Anthony earns $5.00 per hour, how many hours did he work?

1 answer:

katrin2010 [14]3 years ago

7 0

Answer:

Anthony worked to earn $25.00. Joyce worked for $8.00 per hour. If Anthony earns $5.00 per hour, how many hours did he work?

for 5 hours they work

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25 + x^2 + 10x = 0<br> solve for x<br> please explain!!

Vera_Pavlovna [14]

Answer: Simply - 5

Step-by-step explanation: Let's solve your equation step-by-step.

25+x2+10x=0

Step 1: Simplify both sides of the equation.

x2+10x+25=0

Step 2: Factor left side of equation.

(x+5)(x+5)=0

Step 3: Set factors equal to 0.

x+5=0 or x+5=0

x=−5

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The axis of symmetry for a function in the form f(x) = x2 + 4x − 5 is x = −2. What are the coordinates of the vertex of the grap

Studentka2010 [4]

Answer:

D) $(-2,-9)$

Step-by-step explanation:

<u>Vertex Form of a Vertical Parabola:</u>

$y=a(x-h)^2+k$

Vertex -> $(h,k)$

Axis of Symmetry -> $x=h$

Vertical Scale Factor -> $a$

To turn $f(x)=x^2+4x-5$ into vertex form, we need to complete the square on the right side
Therefore, if $f(x)=0$ , then $0+9=x^2+4x-5+9$ completes the square on the right side
This becomes $9=(x+2)^2$
This means that our function in vertex form is $f(x)=(x+2)^2-9$

Therefore, the vertex of the graph is $(h,k)=(-2,-9)$ .

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