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Free_Kalibri [48]
3 years ago
12

What is the value of x? -2x = 8

Mathematics
1 answer:
STatiana [176]3 years ago
6 0
This is a simply problem. Just divide both sides the coefficient of x. Which is -2.

And the answer will be x = -4
You might be interested in
What is the slope of y = - 1 + 3x
mihalych1998 [28]

Answer:

Slope <em>m</em> = 3

General Formulas and Concepts:

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

y = -1 + 3x

<u>Step 2: Rewrite</u>

<em>Rearrange</em>

y = 3x - 1

<u>Step 3: Break Function</u>

<em>Identify parts</em>

Slope <em>m</em> = 3

y-intercept <em>b</em> = -1

8 0
3 years ago
The television show CSI: Shoboygan has been successful for many years. That show recently had a share of 18, meaning that among
jeyben [28]

Answer:

(a) The value of P (None) is 0.062.

(b) The value of P(at least one) is 0.938.

(c) The value of P(at most one) is 0.253.

(d) The event is not unusual.

Step-by-step explanation:

Let <em>X</em> = number of households watching the show.

The probability of the random variable <em>x</em> is, P (X) = <em>p</em> = 0.18.

The sample selected for the survey is of size, <em>n</em> = 14

The random variable <em>X</em> follows a Binomial distribution with parameter <em>n</em> = 14 and <em>p</em> = 0.18.

The probability of a Binomial distribution is computed using the formula:

P(X=x)={n\choose x}p^{x}(1-p)^{n-x};\ x=0,1,2,...

(a)

Compute the probability that none of the households are tuned to CSI: Shoboygan as follows:

P(X=0)={14\choose 0}(0.18)^{0}(1-0.18)^{14-0}=1\times1\times0.06214=0.062

Thus, the value of P (None) is 0.062.

(b)

Compute the probability that at least one household is tuned to CSI: Shoboygan as follows:

P (X ≥ 1) = 1 - P (X < 1)

             = 1 - P (X = 0)

             =1-0.062\\=0.938

Thus, the value of P(at least one) is 0.938.

(c)

Compute the probability that at most one household is tuned to CSI: Shoboygan as follows:

P (X ≤ 1) = P (X = 0) + P (X = 1)

             ={14\choose 0}(0.18)^{0}(1-0.18)^{14-0}+{14\choose 1}(0.18)^{1}(1-0.18)^{14-1}\\=0.062+0.191\\=0.253

Thus, the value of P(at most one) is 0.253.

(d)

An event that has a very low probability of occurrence is known as an unusual event.

The probability of the event "at most one household is tuned to CSI: Shoboygan" is 0.253.

This probability value is not low.

Hence, the event is not unusual.

5 0
3 years ago
The expression 3 ( 1 . 5 )^ t models the number of bacteria in a culture as a function of the number of hours since the culture
Masteriza [31]

Answer:

A

Step-by-step explanation:

Given

3(1.5)^{t}

When the culture was created t = 0, thus

3(1.5)^{0} = 3 × 1 = 3

That is there were initially 3 bacteria in the culture → A

4 0
3 years ago
Ok so this isn't actual homework but I need help calculating this.
jeka57 [31]
Ok so there is 60 minutes in an hour and you have 107 minutes so
107-60 = 47 ( 60 has become an hour)

So we are left with 47 minutes, so add the hour to 7:45 which will make it 8:45 pm
Then add 15 to make it 9:00 pm ( 47 - 15 = 32)

And so then add 32 minutes to 9:00 pm 

Answer is 9:32 p.m.
7 0
3 years ago
One can convert temperature from Kelvin into Fahrenheit using the formula F=95(K−273)+32. What is the temperature in Kelvin corr
DiKsa [7]

Answer:

The temperature in Kelvin corresponding to F degrees Fahrenheit is K=\frac{F-32}{95}+273

Step-by-step explanation:

Given : One can convert temperature from Kelvin into Fahrenheit using the formula F=95(K-273)+32.

To find : What is the temperature in Kelvin corresponding to F degrees Fahrenheit?

Solution :

Temperature from Kelvin into Fahrenheit is given by,

F=95(K-273)+32

Writing Kelvin in terms of Fahrenheit,

Subtract 32 both side,

F-32=95(K-273)

Divide by 95 both side,

\frac{F-32}{95}=K-273

Add 273 both side,

\frac{F-32}{95}+273=K

Therefore, The temperature in Kelvin corresponding to F degrees Fahrenheit is K=\frac{F-32}{95}+273

6 0
3 years ago
Read 2 more answers
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