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rjkz [21]
3 years ago
11

Solve 15x + 2 = 47 (what is the value of the variable “x?”) *

Mathematics
2 answers:
Dima020 [189]3 years ago
7 0

Answer:

x = 3

Step-by-step explanation:

15x + 2 = 47 \\ 15x = 47 - 2 \\ 15x = 45 \\ x =  \frac{45}{15}  \\ x = 3

aleksandr82 [10.1K]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

47-2 then divide by 15

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Answer:

70.8

Step-by-step explanation:

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You buy a pair of jeans (j) that cost $12, two pair of socks (s) for $2 each, and three tops (t) that cost $6 each. Which expres
mars1129 [50]

Answer:

Step-by-step explanation:

1*12 + 2*2 + 3*6 = 12 + 4 +18 = $34

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What is 12 is _____ % of 200 <br><br> If you get the answer, explain or show how you got it
Shkiper50 [21]

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3 years ago
Answer all of the following questions above. I will give brainliest to the correct answer!
zepelin [54]

Answer:

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112

2n^2 + 2n       C

Step-by-step explanation:

a)The correct formula is 2n^2 + 2n

So for n =4, the answer is

2*4^2 + 2*4

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c) The correct formula to use is

2n^2 + 2n  See diagrams for the number of matchsticks to be used.

n                    2n^2 + 2n

1                    2*1^2 + 2*1

1                    2 + 2

1                    4

2                    2*2^2 + 2*2

2                    2* 4 + 4

2                    8 + 4

2                    12

3                    2*3^2 + 2*3

3                    18 + 6

3                    24

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5 0
2 years ago
use synthetic division to determine which of the following are the real zeroes of the function f(x) = 5x^3 + 8x^2 + x - 2
tester [92]
Always try putting x=1 and x=-1 to see if we can find a zero.
If x=1 we get 5+8+1-2 which is not zero.
If we change the signs of the odd powers of x we get -5+8-1-2 which is zero so x=-1 is a zero and x+1 must therefore be a factor. Now we can use synthetic division to find the quadratic:

-1 | 5 8 1 -2
5 -5 -3 2
————
5 3 -2 | 0 = 5x²+3x-2 = (5x-2)(x+1).

Therefore the real zeroes are -1, 2/5, since -1 is a duplicate zero (because the cubic factorises into (5x-2)(x+1)²).
3 0
3 years ago
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