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2 years ago

Solve the equation. +8+3x=X-6 Ox=-18 Ox=-14 Ox=2 Ox=4

Mathematics

1 answer:

professor190 [17]2 years ago

7 0

Answer:

x=-7

Step-by-step explanation:

$8+3x=x-6\\\\8+3x+6=x-6+6\\\\8+3x+6=x+0\\\\(8+6)+3x=x\\\\14+3x=x\\\\14+3x-3x=x-3x\\\\14+0=x-3x\\\\14=(1-3)x\\\\14=-2x\\\\\frac{1}{2}(14)=\frac{1}{2}(-2x)\\\\7=-x\\\\-(7)=-(-x)\\\\-7=x\\\\x=-7$

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Select all that apply.

wlad13 [49]

The first and third option.

Hope this helps.

7 0

3 years ago

Mancini's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what

Anvisha [2.4K]

Question:

Mancini's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what he found.

Type of Crust Number Sold

Thin crust 312

Thick crust 245

Stuffed crust 179

Pan style 304

Based on this information, of the next 4500 pizzas he sells, how many should he expect to be thick crust? Round your answer to the nearest whole number. Do not round any intermediate calculations.

Answer:

1060 thick crusts

Step-by-step explanation:

Given

The above table

Required

Expected number of thick crust for the next 4500

For last week data, calculate the proportion of thick crust sold

$\hat p = \frac{Thick\ crust}{Total}$

$\hat p = \frac{245}{312+245+179+304}$

$\hat p = \frac{245}{1040}$

$\hat p = 0.235577$

For the next 4500;

$n = 4500$

The expected number of thick crust is (E(x)):

$E(x) = \hat p * n$

$E(x) = 0.235577 * 4500$

$E(x) = 1060.0965$

$E(x) \approx 1060$

3 0

2 years ago

Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x un

Jobisdone [24]

Answer:

B. 18

Step-by-step explanation:

The 4 machines can produce x units in 6 days. This means they have a daily total rate of x/6 units per day.

Since the machines are similar and that they work at the same rate, this means that the individual rates of each machine would be x/6/4 = x/24 units per day.

Now we are looking at producing 3x units in 4 days. This means that we want to produce 3x/4 units in a single day. Now, since each machine would work at a rate of x/24, we need to know the number of machines we need. To know this number, we simply divide what is to be achieved by the individual rate:

This is 3x/4 divided by x/24. This mathematically means 3x/4 * 24/x = 18 machines

4 0

3 years ago

What value of x makes this statement true? 3x=2x+12 A) 2 B) 5 C) 6 D) 12

vekshin1

Answer:

The value of x = 12, makes the statement $3x=2x+12$ true

Option D is correct option.

Step-by-step explanation:

What value of x makes this statement true?

$3x=2x+12$

We need to solve the equation to find value of x

$3x=2x+12$

Subtract 2x on both sides

$3x-2x=2x+12-2x\\x=12$

So, the value of x is: x=12

So, The value of x = 12, makes the statement $3x=2x+12$ true

Option D is correct option.

4 0

2 years ago

Else purchased a prepaid phone card for $15. Long distance calls cost 6 cents a minute using this card. Elsa used her card only

Ede4ka [16]

Answer:

25 minutes

Step-by-step explanation:

First you subtract the original amount on the card from the remaining amount left.

So you can get the amount of money spent on that call.

$15 - $13.50 = $1.50

Then you divide that number by how much it cost per minute.

$1.50 ÷ 6 = 0.25

Then you get your answer!

She was on the phone for 25 minutes

7 0

3 years ago