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LiRa [457]
4 years ago
6

I only just started learning Algebra, and my teacher just threw all these worksheets at us without explaining much. Can someone

please explain the concept of Algebra? Staring with this question, please:

Mathematics
2 answers:
AlladinOne [14]4 years ago
8 0

Answer:

x = -8

Step-by-step explanation:

Hello!

Algebra is based on the concept of unknown values called variables, the value of each variable must remain the same in each problem.

Here are steps to solve your problem!

<u>1. Pull out like terms:</u>

-x - 8  =   -1 • (x + 8)

2. <u>Solve</u>  -x-8 = 0

<u>Add 8 to both sides</u> of the equation:

-x = 8

<u>Multiply both sides of the equation by (-1)</u>

<u>x = -8 </u>

Therefore, <u>x = -8</u>

Hope this Helps!

Ratling [72]4 years ago
7 0
2x - 5   = 3x + 3
2x - 3x = 3 + 5
        -x = 8
         x = -8
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Carly grew 12 flowers with 3 seed packets. How many seed packets does Carly need to have a total of 20 flowers in her garden?
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6 0
3 years ago
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djyliett [7]
Subtract $3 from $21 to get the cost of skating for three hours without the rental fee. 21-3=18. $18 was spent on skating for three hours so you'll divide 18 by 3 to get the hourly rate. 18/3=6.
C(x)=6x+3


8 0
4 years ago
Help and show all work please
Anarel [89]

Answer:

1-3

2-8.9

3-6.3

4-26

5-7.8

6-17

7-10

8-32

9-7.9

10-13.2

11- is a right triangle

12- is not a right triangle

13- is a right triangle

14- is not a right triangle

15- is a right triangle

16- is not a right triangle

Step-by-step explanation:

I will do the rest it will just take me some time. I will also give you

step by step at the end.

7 0
3 years ago
Read 2 more answers
Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida
Morgarella [4.7K]

Answer:

Gasto en postre= $75

Step-by-step explanation:

Dada la siguiente información:

Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida.

<u>Para calcular la cantidad a gastar en el postre, debemos usar la siguiente formula:</u>

Gasto en postre= presupuesto total*porcentaje para postre

Gasto en postre= 500*0.15

Gasto en postre= $75

6 0
3 years ago
Binomial ( 5x - y ) ^ 10 terms ax ^ 2 y ^8
iragen [17]
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now, how do we get the coefficients?  well, the first coefficient is 1, any subsequent is " the product of the current terms's coefficient and the exponent of the first element, divided by the exponent of the second element in the next term", now that's a mouthful, but for example,

how did get 210 for the 5th expanded term?  well is just 120 * 7 / 4

how about 252 of the 6th term?   210 * 6 / 5.

how about 45 of the 9th one?  120 * 3 / 8.

of course, the exponents for each is simple, as you'd already know from the binomial theorem.

so, just expand away the 9th expanded term.
3 0
3 years ago
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