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Lemur [1.5K]
3 years ago
8

Dana has n quarters. Ivan has 2 fewer than 3 times the number of quarters Dana has. The expression n + 3 n−2 gives the number of

quarters they have altogether. Which is another way to write this expression?
Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0
You can "collect terms" and write it as
  4n -2
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Given that R = 8 x + 4 y Find y when x = 8 and R = 30 Give your answer as an improper fraction in its simplest form.
QveST [7]

Answer:

25/8

Step-by-step explanation:

Given That:

R = 8x+4y

X= 8

R = 30.

So, 8 x 8 +4y = 30

Simplify, Rearrange and solve.

64 + 4y = 30

4y = 30/64 = 15/32

y = 15/32 divided by 4

y = 15 / 32 x 1/4

y = 15/(32 x 4) = 15/128

hope this helps

4 0
3 years ago
6
saw5 [17]

The above expression is not in its simplest form, and we need to simplify it, that is what asked in the question.

Given equation,

(9 {x}^{2}  - 3x + 7) + ( - 3 {x}^{2}  + 2)

First of all, let's open the parentheses to combine the like terms for simplifying.

9 {x}^{2}  - 3x + 7 - 3 {x}^{2}  + 2

Arranging the like terms, x² with x², x with x and constant terms near to each other.

9 {x}^{2}  - 3 {x}^{2}  - 3x + 7 + 2

Simplying further,

(9 - 3) {x}^{2}  - 3x + 9

6 {x}^{2}  - 3x + 9

So, the correct option is C

<u>━━━━━━━━━━━━━━━━━━━━</u>

8 0
4 years ago
A student solves a quadratic and gets solutions of x=-7 and x=8. Could the discriminant of this equation equal -188?
MrMuchimi

Answer:

7

Step-by-step explanation:

8 0
3 years ago
Is x = 3 1/4 a solution to the equation 12 5/8 = x +9 1/4
navik [9.2K]

x=3 1/4 is not a solution to the equation.

12 5/8=x+9 1/4 Subtract 9 1/4 from each side 3 3/8=x, but 3 1/4=3 2/8

4 0
3 years ago
The sum of 4 consecutive numbers is 926. Find the four numbers​
Kisachek [45]

Answer:231.5

Step-by-step explanation:

If you divide 926 by 4 you will get 231.5

6 0
3 years ago
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