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3 years ago

Which polynomial function has a leading coefficient of3 and roots -4, i, and 2, all with multiplicity 1?

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

f(x) = 3(x + 4)(x – i)(x + i)(x – 2)

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WERE

wlad13 [49]

Answer: it will be 45, but for some reason it’s not in your answer choices

Step-by-step explanation:

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3 years ago

The diameter of a circle is 3.2 meters. Which is the circumference of the circle rounded to the nearest hundredth of a meter?

Paraphin [41]

Answer:

10.05 meters

Step-by-step explanation:

If the diameter is 3.2 meters, then the radius is 1.6 meters.

Use the circumference formula, C = 2 $\pi$ r, and solve for C

C = 2 $\pi$ r

C = 2 $\pi$ (1.6)

C = 3.2 $\pi$

C = 10.05

So, to the nearest hundredth of a meter, the circumference is 10.05 meters

4 0

3 years ago

What is 0.46 as a whole number?

larisa86 [58]

Answer: Round to tens-.50, Round to hundreds- 0

Step-by-step explanation:

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3 years ago

Find the error & explain why it is wrong:

olga nikolaevna [1]

$( { \frac{4 {x}^{3} }{ {y}^{4} }) }^{ - 2} = \frac{16x {}^{6} }{ {y}^{8} }$

$\frac{(4 {x}^{3})^{ - 2} }{ { {(y}^{4} )}^{ - 2} } = \frac{16 {x}^{6} }{ {y}^{8} }$

$\frac{ {16x}^{ - 6} }{ {y }^{ - 8} } = \frac{ {16x}^{6} }{ {y}^{8} }$

The power of -2 was mistook as 2.

8 0

3 years ago

Jennifer picked up these two videogames for a bargain. Normally,each costs $30. But today therewere 30% off. If she also paid8.2

andreev551 [17]

Solution

Step 1

Write an expression for the sales tax she paid and the percentage off

$\begin{gathered} \text{Percentage off =30\%. Therefore, the actual \% left = 100 -30 = 70\%} \\ \frac{100}{70}=\frac{\cos t\text{ of both video games}}{x} \\ \text{where x = cost of video games after the \% off} \\ \end{gathered}$ $\begin{gathered} \text{For the sales tax} \\ \frac{100}{8.25}=\frac{\cos t\text{ of two shirts}}{y} \\ \text{where y = amount of sales tax paid} \end{gathered}$

Step 2

Find her total bill after substitution

$\begin{gathered} \text{Amount paid after 30\% off will be} \\ \frac{100}{70}=\frac{60}{x} \\ 4200\text{ = 100x} \\ x=\text{ }\frac{4200}{100} \\ x=42\text{ dollars} \end{gathered}$ $\begin{gathered} \text{Amount of sales tax} \\ \frac{100}{8.25}=\frac{60}{y} \\ 495\text{ = 100y} \\ y\text{ =\$4.95} \end{gathered}$

Her total bill thereore = 42 +4.95 =$46.95

7 0

1 year ago