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zvonat [6]
2 years ago
10

Which value of x makes this equation true? -12– 2(x+ 9) = 5(x + 4)

Mathematics
2 answers:
Virty [35]2 years ago
8 0

Answer:

x = -50/7

Step-by-step explanation:

telo118 [61]2 years ago
6 0

Answer:

The value of x that makes the equation true is -50/7

Step-by-step explanation:

-12 - 2(x+9) =5(x+4)

-12 - 2x - 18 =5x + 20

- 2x -12-18 = 5x + 20

-2x - 30 =5x + 20

-2x - 5x = 20+ 30

-7x = 50

x = 50/-7

x = -50/7

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8 0
3 years ago
Read 2 more answers
Can soneone help me with these basic vector math problems?!
sergij07 [2.7K]

Answer:

Yes you are right on both.

Step-by-step explanation:

Plz make brainliest

6 0
2 years ago
A container contains 10 diesel engines. the company chooses 8 engines at​ random, and will not ship the container if any of the
lions [1.4K]

Answer:

16/25

Step-by-step explanation:

We just have to find the probability that the 8 non-defects are chosen.

1. Chance first defect is undetected: 8/10 = <em>4/5</em>

2. Chance second defect is undetected: <em>4/5</em>

3. Total probability': 4/5 * 4/5 = 16/25

7 0
3 years ago
If alvin sold 60% of his baseball cards, gave away 30% of those that were left, and still had 40 baseball cards in his possessio
kipiarov [429]

Answer:

The number of baseball card to begin with is 143

Step-by-step explanation:

Let The number of baseball cards = x

The number of sold baseball card = 60% of x

                                                         = 0.6 x

The number of left baseball card = x - 0.6 x = 0.4 x

The number of card gave away = 30 % of left cards

                                                     = 0.3 × 0.4 x = 0.12 x

The number of card left in his possession = 40

So, 0.6 x + 0.12 x + 40 = x

Or,  40 = x - 0.6 x - 0.12 x

Or,  40 = 0.28 x

∴   x = \frac{40}{0.28}  =  142.85 ≈ 143

Hence The number of baseball card to begin with is 143  Answer

3 0
3 years ago
Solve the equation given in Exercise 15 with and without using the LCD of the fractions. Are your answers the same?
Colt1911 [192]
Without LCD :
1/2(4x + 6) = 1/3(9x - 24)
2x + 3 = 3x - 8
2x - 3x = -8 - 3
-x = - 11
x = 11

with LCD :
1/2(4x + 6) = 1/3(9x - 24) ...multiply by 6
3(4x + 6) = 2(9x - 24)
12x + 18 = 18x - 48
12x - 18x = -48 - 18
-6x = - 66
x = -66/-6
x = 11

Yes, the answers are the same :)

3 0
3 years ago
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