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asambeis [7]
3 years ago
15

I need help factoring this expression

Mathematics
1 answer:
omeli [17]3 years ago
3 0
X^2(x+2)-4(x+2)

(x^2-4) (x+2) = 0

do you have to keep going/?

or thats all they want?
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Evaluate the expression for a = 3, b =12, and c = 4. <br><br> 8ab/2bc<br><br> PLZ I NEED HELP!!!
Law Incorporation [45]
8(3)(12) is 288. 2(12)(4) is 96. 288/96 is 3. Answer is 3
3 0
3 years ago
Erica is participating in a road race. The first part of the race is on a 5.2-mile-long straight road-oriented at an angle of 25
kap26 [50]

Answer:

6.31 mi

Step-by-step explanation:

The diagram below explains the solution better.

From the diagram,

C = starting point of the race.

A = end of the first part of the race.

B = end of the race.

Using Cosine rule, we can find the straight-line distance between the starting point and the end of the race.

Cosine rule states that:

a^2 = b^2 + c^2 - 2bc[cos(A)]

where A = angle A = <A

Given that

b = 5.2 miles

c = 2.0 miles

<A = 115° (from the diagram)

Hence,

a^2 = 5.2^2 + 2.0^2 - 2*5.2*2.0[cos(115)]\\\\a^2 = 27.04 + 4 - 20.8[cos(115)]\\\\a^2 = 31.04 + 8.79\\\\a^2 = 39.83\\\\a = \sqrt{39.83}\\ \\a = 6.31 mi

The straight-line distance between the starting point and the end of the race is 6.31 mi

4 0
3 years ago
Simplify: -3152 – 10(4.32 + 5 = 5)]
zheka24 [161]

Answer:-523/52

Step-by-step explanation:

4 0
3 years ago
Select the correct answer.
Irina18 [472]
D. About 122 units I just took the test
4 0
2 years ago
Value of complex number i^7+1/i^4​
Vera_Pavlovna [14]

i^7 + \dfrac 1{i^4}\\\\=i^2 \cdot i^2 \cdot i^2  \cdot i + \dfrac 1{i^2 \cdot i^2}\\\\=(-1)(-1)(-1)i + \dfrac 1{(-1)(-1)} ~~~;[ i^2 = -1] \\\\\ = (-1)^3 i+ \dfrac 1{(-1)^2} \\\\=-i+1

7 0
3 years ago
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