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2 years ago

What are the factors and zeros of the function f(x)=−2x2+7x+15?

Mathematics

2 answers:

rodikova [14]2 years ago

7 0

Answer:

both -3/2 and 5?

Step-by-step explanation:

Hope it helps

Rasek [7]2 years ago

4 0

Answer:

Thus, in the last example, both −3/2 and 5 are zeros of the quadratic function f(x)=2x2 −7x−15.

Step-by-step explanation:

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Dionte needs to make at least $140 over winter break to pay back his parents. If he makes $15 per sidewalk that he shovels for,

lbvjy [14]

15 dollars from 1 sidewalk

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2 years ago

For each babysitting job, Tamar charges $6 for bus fare plus $8 per hour. She only accepts babysitting jobs if the total charge

gregori [183]

Answer:

B. 3 hours

Step-by-step explanation:

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2 years ago

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Molly owes her brother $300.She works for $10 per hour as a checker at the local grocery store.Molly plans to repay her brother

gavmur [86]

Answer: The expression which represents the condition described is given as $4x=300$

Step-by-step explanation:

Since we have given that

Amount that Molly owes her brother = $300

Let the number of hours she worked as a checker be x

Cost of per hour = $10

Amount she get after doing work for x hours is given by

$10x$

Rate of tax are taken out = 80%

So, amount she left with is given by

$\frac{100-20}{100}\times 10x\\\\=\frac{80}{100}\times 10x\\\\=8x$

So, Molly plans to repay her brother half of what she earns is given by

$\frac{8x}{2}=4x$

According to question,

$4x=300\\\\x=\frac{300}{4}\\\\x=75\ hours$

So, the expression which represents the condition described is given as

$4x=300$

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3 years ago

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A person wishes to mix coffee worth $9 per lb with coffee worth $3 per lbto get 240 lbsof a mixture worth $5 per lbHow many po

Nimfa-mama [501]

In order to get $5 per pound, you need a ratio of 1:2. One $9 for every two $3 will get you $5 per pound, since 9 + 3 + 3 is 15, divided by 3 pounds is $5. For 240 pounds, divide by three (since there is one $9 and two $3). This is 80 times the 3 pounds at $5.
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2 years ago

Find exact values for sin θ and cos θ if tan θ = -√3 and θ terminates in Quadrant II.

vivado [14]

Hello :
<span>tan θ = -√3
sin</span>θ = √3/2 1/2
cosθ = -1/2

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2 years ago