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Zepler [3.9K]
2 years ago
6

Please help, Ive been stuck on this the whole day and I’m so tired rn but I need to submit this before the end of today

Mathematics
1 answer:
Murljashka [212]2 years ago
5 0

I have no clue. please like and make me brainliest tho plssss

Step-by-step explanation:

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I do not even know where to begin. Please help.
xenn [34]
F(x) = 2x + 1  when x <= -5
Now -10 is less than -5 so we plug x = -10 into 2x +1:-

f(-10) = 2(-10) + 1 =  -19 answer

Now f(x) = x^2 when  -5< x < 5
x =2  is within this range so f(2) = 2^2 = 4 answer

You can calculate the  other 3  values by a similar method
5 0
2 years ago
Which equation listed below, when solved, shows how to find the circumference of a circle if the diameter is 6 inches? Use 3.14
dangina [55]

Answer:

C = π(6)

C = 6π

C = 18.84

Step-by-step explanation:

The circumference is the distance around the circle. It relates the number of times the diameter will encircle the circumference as 3.14 or π. As a result, the formulas for the circumference of a circle are C = 2πr or C = πd. The information given is the diameter so use C = πd by substituting d = 6.

C = π(6)

C = 6π

C = 18.84

6 0
2 years ago
Sirgeo wants to fence in a circular portion of his backyard for a place space for his dog. Determine the area of the largest por
pickupchik [31]

Answer:

  412.7 square feet

Step-by-step explanation:

A circle of circumference 72 ft will have a radius given by ...

  C = 2πr

  (72 ft) = 2(3.14)r

  r = (72 ft)/(6.28) ≈ 11.465 ft

The area of a circle with that radius is ...

  A = πr² = 3.14(11.465 ft)² ≈ 412.7 ft²

Sirgeo can enclose a circular area of about 412.7 square feet with 72 feet of fence.

4 0
2 years ago
Solve Tan^2x/2-2 cos x = 1 for 0 &lt; or equal to theta &lt; greater or equal to 1.
mixer [17]

Answer:

x = theta = 0°

Step-by-step explanation:

Given the trigonometry function

Tan²x/2-2 cos x = 1

Tan²x-4cosx = 2 ... 1

From trigonometry identity

Sec²x = tan²x+1

tan²x = sec²x-1 ... 2

Substituting 2 into 1, we have:

sec²x-1 -4cosx = 2

Note that secx = 1/cosx

1/cos²x - 1 - 4cosx = 2

Let cosx. = P

1/P² - 1 - 4P = 2

1-P²-4P³ = 2P²

4P³+2P²+P²-1 = 0

4P³+3P² = 1

P²(4P+3) = 1

P² = 1 and 4P+3 = 1

P = ±1 and P = -3/4

Since cosx = P

If P = 1

Cosx = 1

x = arccos1

x = 0°

If x = -1

cosx = -1

x = arccos(-1)

x = 180°

Since our angle must be between 0 and 1 therefore x = 0°

4 0
2 years ago
Factor completely x3 7x2 − 2x − 14. (x − 7)(x2 − 2) (x 7)(x2 2) (x 7)(x2 − 2) (x − 7)(x2 2).
bixtya [17]

The factor of the provided polynomial after the factorization process are similar to option C, which is

(x+ 7)(x^2  -2)

<h3>How to find the factor of polynomial?</h3>

The factor of a polynomial is the terms in linear or equation form, which are when multiplied together, give the original polynomial equation as result.

Find these factors by taking out the common factors.

The given polynomial equation in the problem is,

x^3+ 7x^2 -2x - 14

The above equation has the unknown variable x and the highest power of this unknown variable is 3.

Take out the highest common factor x², which can divide each term of the first two terms of equation (x³, 7x²). Thus,

x^2(x+ 7) -2x - 14

Take out the highest common factor -2 from the second two terms as,

x^2(x+ 7) -2(x + 7)

Now take out the common group (x+7) as,

(x+ 7)(x^2  -2)

Hence, the factor of the provided polynomial after the factorization process are similar to option C, which is

(x+ 7)(x^2  -2)

Learn more about factor of polynomial here;

brainly.com/question/24380382

3 0
2 years ago
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