3 years ago

If f(x)=4x^3+16x^2-23x-15 and f(−5)=0, then find all of the zeros of f(x) algebraically.

Mathematics

1 answer:

juin [17]3 years ago

6 0

Answer:

4x^3+16x^2-23x-15 = (x+5)×(x+1/2)×(x-1.5)

so zeroes are at: -5, -1/2, and 1.5

You might be interested in

Boxes of six-inch slate flooring tile contain 40 tiles per box. the count is the number of cracked tiles in a box. you have noti

zysi [14]

Do you have answer choices?

3 0

4 years ago

Please Complete the question.

Norma-Jean [14]

Answer:

0.0174 is the answer you are looking for

5 0

3 years ago

Which choice correctly shows rounding to the hundredths place?

Slav-nsk [51]

Answer:

where are the choices

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Changle. Show all work. Round each length to the nearest tenth and each angle to the

Sedaia [141]

Answer:

Part 1) $BC=12.2\ units$

Part 2) $m\angle A=55^o$

Part 3) $m\angle C=35^o$

Step-by-step explanation:

Part 1) Find AC

we know that

In the right triangle ABC of the figure

Applying the Pythagorean Theorem

$AC^2=AB^2+BC^2$

substitute the given values

$AC^2=7^2+10^2$

$AC^2=149\\AC=12.2\ units$

Part 2) Find the measure of angle A

we know that

In the right triangle ABC

$tan(A)=\frac{BC}{AB}$ ----> by TOA (opposite side divided by the adjacent side)

substitute the values

$tan(A)=\frac{10}{7}$

using a calculator

$m\angle A=tan^{-1}(\frac{10}{7})=55^o$

Part 3) Find the measure of angle C

we know that

In the right triangle ABC

$m\angle A+m\angle C=90^o$ ----> by complementary angles

substitute the given value

$55^o+m\angle C=90^o$

$m\angle C=90^o-55^o=35^o$

8 0

3 years ago

12, 17, 11, 13, 17, 15<br> What is the mean of the data?

garri49 [273]

Step-by-step explanation:

The mean is the average. Add up all the points, then divide by the number of points.

(12 + 17 + 11 + 13 + 17 + 15) / 6 = 14⅙

6 0

3 years ago

Read 2 more answers