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lilavasa [31]
3 years ago
12

Solve the following: 2(x + 3) = x - 4 4(5x - 2)= 2(9x + 3)

Mathematics
2 answers:
pantera1 [17]3 years ago
4 0

Answer:

x = -10

x = 7

Step-by-step explanation:

2(x+3) = x - 4

2x + 6 = x - 4

2x -x = - 4 - 6

x = - 10

4(5x-2) = 2(9x+3)

20x - 8 = 18x +6

20x - 18x = 6 + 8

2x = 14

x = 7

have a nice day :D

vredina [299]3 years ago
4 0
2x(x + 3)= x - 4
2x + 6 = x - 4
2x - x - 4
X = -10

4(5x + -2) = 2(9x + 3)
20x - 8 = 18x + 6
20x -18x = 6 + 8
2x/2 = 14\2
X = 7
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What times what gives me -48 but adds to be -32?
oee [108]

Answer:

a couple of irrational numbers: -16±4√19, approximately {1.436, -33.436}

Step-by-step explanation:

Your question can be cast as the quadratic equation

  x² +32x -48 = 0

The solutions can be found using the quadratic formula:

  x = (-32 ±√(32² -4(1)(-48)))/(2(1)) = -16±√304 = -16±4√19

_____

<em>Comment on the equation we used</em>

We notice that when p and q are roots, the equation can be written ...

  (x -p)(x -q) = 0 = x² -(p+q)x +pq

You want p+q = -32, pq = -48, so the equation is ...

  x² -(-32)x +(-48) = 0

  x² +32x -48 = 0 . . . . . . with parentheses eliminated

5 0
3 years ago
A tennis ball weighs about 57.6 grams. about how many apuntes would 12 tennis balls weigh?
Ilia_Sergeevich [38]

Answer:

The weight of 12 tennis balls  =  691. 2 grams

Step-by-step explanation:

The weight of each  tennis ball =  57.6 grams

So, the weight of 12 balls    =    12 x ( weight of 1 ball)

                                              = 12 x 57.6 grams

                                              = 691.2 grams

⇒12 balls weigh 691.2 grams

Hence, the weight of 12 tennis balls  =  691. 2 grams

7 0
3 years ago
A times a to the 7 power
ivolga24 [154]

Answer:

{a}^{8}

Step-by-step explanation:

a is a¹ and you have a^7 in multiplication you add the exponents. If you were to have a numerical value, you would replace a and calculate. If a = -5 then: a^8 =

( - 5)^{8}

which is = 390 625

4 0
3 years ago
John and 2 friends are going out for pizza for lunch. They split one pizza and 3 large drinks. The pizza cost $12.00. They spend
Tatiana [17]

。☆✼★ ━━━━━━━━━━━━━━━  ☾

Subtract the cost of the pizza from the total:

16.95 - 12 = 4.95

Divide this value by 3:

4.95/3 = 1.65

1 large drink cost $1.65

Have A Nice Day ❤

Stay Brainly! ヅ

- Ally ✧

。☆✼★ ━━━━━━━━━━━━━━━━  ☾

3 0
3 years ago
Help please ASAP!!!! I NEED CORRECT ANSWERS ONLY FOR BRAINLIEST
Yuliya22 [10]
C. it's simple dude. you just plug in each matrix value into the given function and solve. the matrix in C matches the given formula.
7 0
3 years ago
Read 2 more answers
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