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Mariana [72]
2 years ago
8

You have already saved $55. You earn $9 per hour at your job. You are

Mathematics
2 answers:
jolli1 [7]2 years ago
5 0
199-55= 144

144 divided by 9 is 16

16 Hours is your answer
Hoochie [10]2 years ago
3 0

Answer:

$55+$9x≥$199

You must work for at least 16 hours to be able to buy the bicycle.

Step-by-step explanation:

Let x represent the number of hours you need to work to buy the bicycle.

You already have $55.

⇒$55+ −−−−−≥ −−−−−

You also earn $9 per hour.

Algebraically, this can be written as 9x.

⇒$55+$9x≥ −−−−−

You need to earn at least $199 to buy the bicycle.

⇒$55+$9x≥$199

The ≥ sign is used because the left-hand side of the inequality must be "greater than or equal to" $199.

Let's find out how many hours you need to work to buy the bicycle.

Subtracting $55 from both sides of the inequality:

⇒$55−$55+9x≥$199−$55

⇒$9x≥$144

Dividing both sides by $9:

⇒$9x$9$=$144$9

∴x≥16

Therefore, you need to work at least 16 hours to afford the bicycle.

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morpeh [17]

Answer:

No real solutions.

Step.-by-step explanation:

Step 1: Subtract 2x from both sides.

For this equation: a=1, b=-2, c=20

Step 2: Use quadratic formula with a=1, b=-2, c=20.

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2 years ago
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3 years ago
Help please! Could you put an explanation as well?
Lisa [10]

Answer:

y=-(4x/3) -1

Step-by-step explanation:

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y intercept = c = -1

now using equation;

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2 years ago
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AveGali [126]

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3 years ago
determine the maximum or minimum of the quadratic function. express your answer in the form (x,y) and using decimals rounded to
kolezko [41]

We are given the following quadratic equation

f(x)=2x^2+7x-10

The vertex is the maximum/minimum point of the quadratic equation.

The x-coordinate of the vertex is given by

h=-\frac{b}{2a}

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The y-coordinate of the vertex is given by

\begin{gathered} f(x)=2x^2+7x-10 \\ f(-1.75)=2(-1.75)^2+7(-1.75)-10 \\ f(-1.75)=2(3.0625)^{}-12.25-10 \\ f(-1.75)=6.125^{}-12.25-10 \\ f\mleft(-1.75\mright)=-16.13 \end{gathered}

This means that we have a minimum point.

Therefore, the minimum point of the given quadratic equation is

(-1.75,-16.13)

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