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klasskru [66]
2 years ago
8

Substitution method x=-y 8x+3y=40

Mathematics
2 answers:
Pachacha [2.7K]2 years ago
6 0
Plug in -y for x in the equation
8(-y) + 3y = 40
5y = 40
y = 8
Delvig [45]2 years ago
4 0
The answer would be 16
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Write the inequality given in the diagram below
11111nata11111 [884]

Answer:

x ≥ - 1

Step-by-step explanation:

the solid circle above - 1 on the number line indicates that x can equal - 1

the arrow points right indicating x is greater than or equal to - 1 , that is

x ≥ - 1

4 0
1 year 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
2 years ago
Formula for the sum of angles of a triangle: A+B+C=180 degrees, for C
nevsk [136]
A + B + C = 180
<span>C = 180 - A - B </span>

5 0
3 years ago
cell Phone plan A costs $70 per month and comes with a free $500 phone, cell phone B costs $50 per mouth but does not come with
Levart [38]

Answer:

It will be 25 months

Step-by-step explanation:

7 0
3 years ago
Please help me I am so lost!
Vedmedyk [2.9K]
1. Plug in -3 for a
14-(-3)^2
14-9
5

Final answer: 5

2. 15 more than r=15+r (notice the keyword more) equals 61
Final answer: r+15=61
8 0
2 years ago
Read 2 more answers
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