Does anyone know this answer ?

Determine how many, what type, and find the roots for f(x) = x4 + 21x2 − 100. Determine how many, what type, and find the roots

kykrilka [37]

Answer:

Please, see the attached files.

Step-by-step explanation:

Please, see the attached files.

8 0

3 years ago

A radio tower has a 64 ft Shadow cast by the sun. If the angle from the tip of the shadow to the top of the tower is 78.5°. what

Softa [21]

Step-by-step explanation:

right-angled triangle, and law of sine (for any type of triangles) :

a/sin(A) = b/sin(B) = c/sin(C)

where the sides and the correlated angles are always opposite from each other.

and we know that the sum of all angles in a triangle is always 180°.

so, the angle at the foot of the radio tower is 90°.

the angle from the top of the shadow to the top of the tower is 78.5°.

so, the third angle (at the top of the tower) is

180 - 90 - 78.5 = 11.5°

and with the law of sine we get

height/sin(78.5) = 64/sin(11.5)

height = 64×sin(78.5)/sin(11.5) = 314.57005... ft

6 0

2 years ago

From three chocolate bars we can make at most five chocolate rabbits and have some leftover. What is the greatest possible numbe

iogann1982 [59]

Answer:

The maximum number of chocolate rabbits that can be made from 16 chocolate bars = 27

Step-by-step explanation:

3 chocolate bars can make at most 5 chocolate rabbits.

Therefore, maximum number of chocolate rabbits that can be made from 3 chocolate bars = 5

$\text{So, maximum number of chocolate rabbits that}\\\text{can be made from 1 chocolate bar = }\frac{5}{3}$

Now, we are given 16 chocolate bars and need to find maximum number chocolate rabbits that can be made from the given number of chocolate bars.

$\text{So, maximum number of chocolate rabbits that}\\\text{can be made from 16 chocolate bars = }\frac{5}{3}\times 16\approx 26.67$

Hence, The maximum number of chocolate rabbits that can be made from 16 chocolate bars = 27

6 0

3 years ago

a 33 m tall building casts a shadow. The distance from the top of the building to the tip of the shadow is 36m Find the length o

BabaBlast [244]

Answer:

14.39

Step-by-step explanation:

a^2 + b^2 = c^2

33^2 + b^2 = 36^2

1089 + b^2 = 1296

1089 - 1089 + b^2 = 1296 - 1089

b^2 = 207

b = 14.39

6 0

4 years ago

1. It took Jed of an hour to complete his math homework on Friday. of an hour

Kobotan [32]

<em>Correct Question:</em>

<em>It took Jed 5/3 of an hour to complete his math homework on Friday, 3/4 of an hour on Saturday, and 5/6 of an hour on Sunday. How many hours did he take to complete his homework altogether?</em>

Answer:

$Total = 3\frac{1}{4}\ hours$

Step-by-step explanation:

Given

$Friday= \frac{5}{3}$

$Saturday = \frac{3}{4}$

$Sunday = \frac{5}{6}$

Required

Determine the total time spent

Total time is calculated as follows:

$Total = Friday + Saturday + Sunday$

$Total = \frac{5}{3} + \frac{3}{4} + \frac{5}{6}$

$Total = \frac{20 + 9 + 10}{12}$

$Total = \frac{39}{12}$

Divide numerator and denominator by 3

$Total = \frac{13}{4}$

$Total = 3\frac{1}{4}\ hours$

6 0

3 years ago