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2 years ago

12.7 = x – 3.8 help again

Mathematics

2 answers:

PilotLPTM [1.2K]2 years ago

6 0

Answer:

x=16.5

Step-by-step explanation:

12.7 + 3.8 = x - 3.8 + 3.8

16.5 = x

dusya [7]2 years ago

5 0

Answer:

x = 16.5

Step-by-step explanation:

In this equation, we're trying to figure out the value of x, or what it's equivalent to in this particular situation. Let's look at what we have right now:

12.7 = x - 3.8

How can we get x by itself? Well, the thing that immediately comes to my mind is adding 3.8 to both sides. This will isolate x and help is figure out what it's equal to. So, we start out with:

12.7 = x - 3.8

...and then we add 3.8 to both sides to get:

16.5 = x

And that's the value of x. We can check our answer by replacing x with 16.5 and seeing if both sides of the equation are equivalent:

12.7 = 16.5 - 3.8?

12.7 = 12.7

So, we're correct. If you need any more help, let me know! :)

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A number x divided by -1 is at least -4

Vinil7 [7]

A number x divided by -1 is at least -4.

x / -1 ≥ -4

Multiply both sides by -1.

x ≤ 4

Remember, when multiplying or dividing by a negative, you must change the sign's direction.

~Hope I helped!~

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2 years ago

X - 5(x - 1) = x - (2x - 3)

m_a_m_a [10]

X=2/3 I hope this helps

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2 years ago

Read 2 more answers

Evaluate 24. 5 PLS AND THANK YOU!!!

GREYUIT [131]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

2⁴ · 5

Step 2: Evaluate

Exponents: 16 · 5
Multiplication: 80

4 0

2 years ago

Show that the equation 2x + 3 cos x + e ^ x = 0 has a root on the interval [- 1, 0]

ExtremeBDS [4]

If x = -1, you have

2(-1) + 3 cos(-1) + e ⁻¹ ≈ -0.0112136 < 0

and if x = 0, you have

2(0) + 3 cos(0) + e ⁰ = 4 > 0

The function f(x) = 2x + 3 cos(x) + eˣ is continuous over the real numbers, so the intermediate value theorem applies, and it says that there is some -1 < c < 0 such that f(c) = 0.

5 0

2 years ago

3. Assume that the likelihood of a child under the age of ten watching PBS is 0.76. Three children are

natta225 [31]

Using the binomial distribution, the probabilities are given as follows:

a) 0.4159 = 41.59%.

b) 0.5610 = 56.10%.

c) 0.8549 = 85.49%.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

For this problem, the values of the parameters are:

n = 3, p = 0.76.

Item a:

The probability is P(X = 2), hence:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{3,2}.(0.76)^{2}.(0.24)^{1} = 0.4159$

Item b:

The probability is P(X < 3), hence:

P(X < 3) = 1 - P(X = 3)

In which:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 3) = C_{3,3}.(0.76)^{3}.(0.24)^{0} = 0.4390$

Then:

P(X < 3) = 1 - P(X = 3) = 1 - 0.4390 = 0.5610 = 56.10%.

Item c:

The probability is:

$P(X \geq 2) = P(X = 2) + P(X = 3) = 0.4159 + 0.4390 = 0.8549$

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

4 0

1 year ago