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n200080 [17]
3 years ago
9

How do I do one of these types of problems?

Mathematics
1 answer:
otez555 [7]3 years ago
3 0

Answer:

x = 5

Step-by-step explanation:

I'm assuming the question is asking to solve for variable x.

The two red arrows signify the two lines are congruent, meaning they equal the same measurement.

In other words:

23x - 5 = 21x + 5

Isolate the variable x

Add 5 to both sides to cancel 5 from the left side

23x - 5 + 5 = 21x + 5 + 5

23x + 0 = 21x + 10

23x = 21x + 10

Subtract 21x from both sides to cancel 21x from the right side

23x - 21x = 21x - 21x + 10

2x = 0x + 10

2x = 10

Divide both sides by 2 to isolate the variable x

2x ÷ 2 = 10 ÷ 2

x = 5

When solving for these types of problems, always isolate the variable. Also, keep in mind that whatever you do to one side, you must do to the other (such as how I added 5 to <em>both</em> sides).

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SI LOS ELEMENTOS DE UN CONJUNTO PERTENECEN TODOS A OTRO CONJUNTO SE LLAMAN: a) Iguales b) Subconjunto c) Cardinalidad
Liono4ka [1.6K]

Answer:

B; Subconjunto

Step-by-step explanation:

Aquí, se nos pide que seleccionemos el término que define un conjunto con sus elementos que pertenecen a un conjunto más grande.

La respuesta correcta es que el conjunto más pequeño es un subconjunto del conjunto más grande.

Esto significa que el conjunto más pequeño es parte del conjunto más grande, lo que lo convierte en una subdivisión del conjunto más grande

6 0
4 years ago
If the<br> average (arithmetic<br> mean) of 2, 7, and x is 12,<br> what is the value of x?
stealth61 [152]

Answer:

x = 27

Step-by-step explanation:

mean is calculated as

mean = \frac{sum}{count}

sum = 2 + 7 + x = 9 + x and count = 3 , then

\frac{9+x}{3} = 12 ( multiply both sides by 3 to clear the fraction )

9 + x = 36 ( subtract 9 from both sides )

x = 27

6 0
2 years ago
You roll a die, winning nothing if the number of spots is odd, $3 for a 2 or a 4, and $10 for a 6.
Svetach [21]

Answer:

Dice and dollars You roll a die, winning nothing if the number of spots is odd, $1 for a 2 or a 4, and $10 for a 6. a) Find the expected value and standard deviation of your prospective winnings. b) You play twice. Find the mean and standard deviation of your total winnings. c) You play 40 times. What’s the probability that you win at least $100?

Step-by-step explanation:

7 0
3 years ago
A recipe calls for 2 1/3cups of cheddar cheese and 2/4cup of parmesan cheese. How much cheese does the recipe call for altogethe
AveGali [126]

Answer:

Exact Form: 17/6

Decimal Form: 2.83

Mixed Number Form: 2 5/6

Step-by-step explanation:

3 0
3 years ago
You are stuck at the Vince Lombardi rest stop on the New Jersey Turnpike with a dead battery. To get on the road again, you need
Mars2501 [29]

Answer:

The probability that one will end up calling a tow truck because all 10 drivers do not have jumper cables = 0.1749

Step-by-step explanation:

Probability of one driver having jumper cables = 16% = 0.16

Probability that one driver doesn't have jumper cables = 1 - 0.16 = 0.84

The required probability is the probability you end up calling a tow truck.

This probability is equal to the probability that all the 10 drivers asked about jumper cables on the road don't have jumper cables.

Probability that 10 drivers don't all have jumper cables = (0.84)¹⁰ = 0.1749

Hence, the probability that one will end up calling a tow truck because all 10 drivers do not have jumper cables = 0.1749

Hope this Helps!!!

5 0
3 years ago
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