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asambeis [7]
3 years ago
15

Algebra is confusing !! :(

Mathematics
2 answers:
Soloha48 [4]3 years ago
7 0

Answer: Fourth Choice. 1.4

Step-by-step explanation:

<u>Concept:</u>

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

<u>Solve:</u>

Given

(x² - 4) / 3x

x = 5

Substitute the value of x

[(5)² - 4) / 3(5)

Simplify exponents

(25 - 4) / 3(5)

Simplify numerator with subtraction and denominator with multiplication

21 / 15

Simplify by division

7/5 = 1.4

Hope this helps!! :)

Please let me know if you have any questions

jolli1 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

Hello!

x²-4 = 5*5-4= 21

3x= 3*5 = 15

21/15 = 1,4

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The quotient of a number, divided by 3, equals-8
melisa1 [442]

Answer:

x / 3 = -8

Step-by-step explanation:

5 0
2 years ago
-6x-4+5x=4<br> What is "x". Please show your work.
4vir4ik [10]

Answer:

first thing to do is combine like terms

now you would have -x-4=4

this is because you added -6x+5x

now you would add 4 to each side

now you would have-x=8

then you would divide the negative because x has to be positive

now you would have x= -8

that is your answer. if you any questions just ask :D

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!
meriva

Answer:

n = 8

Step-by-step explanation:

(n−2) × 180  is the formula to find the interior angles of a polygon

(n−2) × 180 = 1080

Divide each side by 180

(n−2) × 180/180 = 1080/180

n-2 =6

Add 2 to each side

n-2+2 = 6+2

n = 8

5 0
3 years ago
The following quadrilateral is a parallelogram.
Natali5045456 [20]

Answer:

70

Step-by-step explanation:

Angle Q and angle P are supplementary angles, so they add up to 180 degrees.

6x + 4 + 10x = 180

16x + 4 = 180

16x = 176

x = 176/16

x = 11

Put x in angle Q as 11 and solve.

6(11) + 4

66 + 4

= 70

Angle Q measures 70 degrees.

7 0
3 years ago
Here are the first four terms in an arithmetic sequence.
finlep [7]

Answer:

88

Step By Step

Step-by-step explanation:

An arithmetic sequence is defined as

an=a+d(n-1) where an=nth term, a=initial term, n=term number, and d=common difference

For sequence 1,4,7... a=1 and d=4-1=7-4=3 so

an=1+3(n-1)

an=3n-2, so the 30th term is

an=3(30)-2

an=88

7 0
3 years ago
Read 2 more answers
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