1/X 1/4=7/12 solve and check solution

Answers

Answer 1

Answer: $\frac { 1 }{ x } +\frac { 1 }{ 4 } =\frac { 7 }{ 12 } \n \n \frac { 1 }{ x } =\frac { 7 }{ 12 } -\frac { 1 }{ 4 }$

$\n \n \frac { 1 }{ x } =\frac { 7 }{ 12 } -\frac { 3 }{ 12 } \n \n \frac { 1 }{ x } =\frac { 4 }{ 12 } =\frac { 1 }{ 3 } \n \n 3x\cdot \frac { 1 }{ x } =\frac { 1 }{ 3 } \cdot 3x\n \n x=3$

Answer 2

Answer: 1/x+1/4=7/12 , 1/x+3/12=7/12 , 1/x=4/12=1/3 , x=3

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If set D is not the empty set but is a subset of set E, then which of the following is true? D ∩ E = D D ∩ E = E D ∩ E = Ø
25% of 68000 is how much
I need help with this
Given: ASTU with ST || XYProve: * -Statements1. ASTU with ST || XYReasons1. given2. def. of correspondingangles2. 21 and 22 arecorresponding angles3. 23 and 24 arecorresponding angles4. 21 - 22; 23 243. def. of correspondingangles4. corresponding anglestheorem5.5. AA similarity theoremComplete the steps of the proof.6. def. of similar triangles6. U = Tu7. SU = SX + XU:TU = TY + YU8. SXEUXU – TYHYU7. segment additionpostulate8. substitution propertyXXIITYVII
Can someone please help me fast

Whats does slope mean

Answers

slope means rise over run method

Slope is the constant rate of something, which is calculated by rise/run.

Also, the formula for slope is $(y2 - y1)/(x2-x1)$

4. You have a deck of 40 number cards: five of each number 2 to 9. You shuffle the deck, pick a card, look at it, return it to the deck, and then repeat for a second card. Determine each theoretical probability. a) sum is 12 b) difference is less than 5 c) product is odd

Answers

To determine the theoretical probabilities, we'll analyze the different possible outcomes for each case.

Total number of cards = 40 (5 cards for each number from 2 to 9)

a) Sum is 12:

There are several combinations of cards that can result in a sum of 12:

3 and 9
4 and 8
5 and 7
7 and 5
8 and 4
9 and 3

Total favorable outcomes = 6 (since there are 6 possible combinations)

Total possible outcomes (since you're drawing two cards) = 40 * 40 = 1600

Probability (sum is 12) = (Number of favorable outcomes) / (Total possible outcomes)

Probability (sum is 12) = 6 / 1600 = 0.00375

b) Difference is less than 5:

There are several combinations of cards that can result in a difference less than 5:

2 and 3
3 and 2
3 and 4
4 and 3
4 and 5
5 and 4
5 and 6
6 and 5
6 and 7
7 and 6
7 and 8
8 and 7
8 and 9
9 and 8

Total favorable outcomes = 14

Total possible outcomes = 1600

Probability (difference is less than 5) = 14 / 1600 = 0.00875

c) Product is odd:

For the product to be odd, one or both of the numbers drawn must be odd. Since there are five odd numbers (3, 5, 7, 7, 9), and each number has five cards, the total number of favorable outcomes is 5 + 5 + 5 + 5 + 5 = 25.

Total possible outcomes = 1600

Probability (product is odd) = 25 / 1600 = 0.015625

To summarize:

a) Probability (sum is 12) ≈ 0.00375
b) Probability (difference is less than 5) ≈ 0.00875
c) Probability (product is odd) ≈ 0.015625

PLS HELP I WILL GIVE BRAINLIST AND A THANK YOU!!!!! :)

Answers

Answer:

Step-by-step explanation:

Both angles together are supplementary, or they add up to 180 degrees.

(3x+12)+x=180 degrees

Answer:A. (3x+12)+x=180

Step-by-step explanation:

a vehicle travels 24km with a constant speed of 65 km/h and another 50 km with a constant speed of 80 km/h what was its average speed

Answers

average speed=totaldistance/totaltime

totaldistance=24+50=74km

total time
65/24=0.3692307 hours

80/50=1.6 hours
total time=0.3692307+1.6=1.9692307

averagespeed=74/1.9692307=37.5781263 km/h

PLEASE ANSWER + BRAINLIEST!!What is the point of intersection when the system of equations below is graphed on the coordinate plane?

A. (1, –3)

B. (–1, 3)

C. (1, 3)

D. (–1, –3)

Answers

The correct answer is B. (-1, 3)

Hope this helps :)

Solve each equation
x^2+6x+9=1

Answers

x= -4 and x=-2

x^2+6x+9=1
(x+3)^2=1
x+3=+/-1
x+3=-1 / x-3=1
x=-4
x=-2

Answer:x=-2,-4

Step-by-step explanation:

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