Question
Help me -.8+ 2X = .3 - x

Answer:

false

Step-by-step explanation:

it's false negative

Answer:

Not a solution.

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

\(\left \{ {{2x+5y=8} \atop {3x-2y=5}} \right.\)

(-1, 2)

Step 2: Substitute and Check

We see here that -7 ≠ 5. Therefore, (-1, 2) is not a solution of the systems of equations.

1.a The probability of throwing at most 2 heads in 5 throws is more probable.

1.b A total of 2^4 = 16 outcomes.

1.c The probability of selecting a black ball, a red ball, and then another black ball is 5/56.

1a. Probability of throwing exactly 15 heads in 20 throws

Probability of getting a head is p = 0.65, and the probability of getting tails is q = 1 - 0.65 = 0.35.

Let X be the random variable which counts the number of heads in 20 throws.

Then X follows the binomial distribution B(20, 0.65).P(X = 15) = 20C15 * 0.65^15 * 0.35^5= 0.16

Probability of throwing at most 2 heads in 5 throws

Let Y be the random variable which counts the number of heads in 5 throws.

Then Y follows the binomial distribution B(5, 0.65).P(Y ≤ 2) = P(Y = 0) + P(Y = 1) + P(Y = 2)

                                                                                                  = 0.01 + 0.08 + 0.25

                                                                                                  = 0.34

Therefore, the probability of throwing at most 2 heads in 5 throws is more probable.

1b. Suppose we flip a fair coin 4 times.

For what combination(s) do there exist exactly 3 permutations?

There are a total of 2^4 = 16 outcomes.

The combinations that exist in exactly 3 permutations are HTTH, HTHT, THHT, THTH, and HHTT.

1c. Probability of selecting a black ball, a red ball, and then another black ball We want to compute the probability of pulling out 3 balls, without replacement, from a box with 5 red balls and 3 black balls.

The total number of ways of pulling out 3 balls is 8C3.

The probability of pulling out a black ball on the first draw is 3/8.

The probability of pulling out a red ball on the second draw is 5/7.

The probability of pulling out another black ball on the third draw is 2/6 = 1/3.

So, the required probability is (3/8) * (5/7) * (1/3) = 5/56.

Therefore, the probability of selecting a black ball, a red ball, and then another black ball is 5/56.

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Answer:

let Cedric's age be c

tyshon= 3c-3

3c-3 +c =3c+c-3 = 4c-3

4c-3=57

4c=60

c=15

tyshon=15×3-3 = 42

Answer:

16

Step-by-step explanation:

57dvied by 3 -3=16

Answer:

-1 and -2

Step-by-step explanation:

The function 2 represented by the equation f(x) = -(x - 2)² + 5 has the larger maximum.

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

The functions are given as:

Function 1

f(x) = -(x - 4)² + 1

Function 2:

f(x) = -(x - 2)² + 5

A quadratic function is represented as a (x - h)² + k, when a is negative then, the vertex of the function is a maximum. In both functions, the value of a is -1. This means that both functions are at a maximum

The values of k in both functions are k = 1 and k = 5. By comparison, 5 is greater than 1. Therefore, function 2 has larger maximum.

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complete question;

The following graph describes function 1, and the equation below it describes function 2. Determine which function has a greater maximum value, and provide the ordered pair. Function 1 graph of function f of x equals negative x squared plus 8 multiplied by x minus 15 Function 2 f(x) = −x2 + 2x − 15 Function 1 has the larger maximum at (4, 1). Function 1 has the larger maximum at (1, 4). Function 2 has the larger maximum at (−14, 1).

Answer:

is 9

Step-by-step explanation:

Answer:

Top right would be the answer

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The value of the expression \(4\frac{1}{10}\times-4\times\frac{5}{12}\) is \(-6\frac{5}{6}\).

A mathematical statement expressed as a string of numbers and unknowable variables is known as a numerical expression. Statements can be used to create numerical expressions.

The given, expression is \(4\frac{1}{10}\times-4\times\frac{5}{12}\).

= (41/10) × (- 4) × (5/12).

= (41×-4×5)/(10×12).

= (-820/120).

= - 82/12.

= - 41/6.

= \(-6\frac{5}{6}\).

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Answer:

An absolute value equation with solutions of x = 3 and x = 9 is |x - 6| = 3.

Step-by-step explanation:

Answer:

I have attached my answer below.

Step-by-step explanation:

Not sure if its correct or not. Hope this helps!!

Answer:

C

Step-by-step explanation:

9-5=4

3-1=2

4/2=2

Answer:

b.list all of your current credit cards

Step-by-step explanation:

The answer is the lower bound theorem identifies -2 as a lower bound for the real zeros of f(x). The upper bound theorem does not specify any upper bound for the real zeros of (x)

The Lower bound theorem states that "If the terms of a polynomial are arranged in descending order of their degrees, then the absolute value of the quotient of the constant term and the coefficient of the term of the highest degree gives a lower bound for the absolute value of its zeros." Let's examine whether the lower bound theorem identifies -2 as a lower bound for the real zeros of f(x) and whether 3 is an upper bound for the real zeros of (x).

As f(x) = 56 = x + 17x² + 11x + 23Since f(x) is not arranged in descending order of their degrees, we have to rearrange it as follows. 17x² + 11x + x + 23 + 56 = 17x² + 12x + 79 on rearranging the equation we have: 17x² + 12x + 79 = 0Hence the constant term is 79 and the coefficient of the term of the highest degree is 17. Thus, using the lower bound theorem, we can evaluate that a lower bound for the absolute value of the zeros of the polynomial is 79/17 ≈ 4.65 Since -2 is less than the calculated lower bound of 4.65, it is indeed a lower bound for the real zeros of f(x). Now, for (x), the constant term is 0, and the coefficient of the term of the highest degree is 1. Thus, using the upper bound theorem, we can evaluate that an upper bound for the absolute value of the zeros of the polynomial is 1/0, which is equal to infinity. Since infinity is not a number, 3 cannot be an upper bound for the real zeros of (x).

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Answer:

The length is 6 feet and the width is 4 feet

Step-by-step explanation:

Let x represent the length of the yard

The width can be represented by x - 2, since it is 2 less than the length.

Use the perimeter formula, P = 2l + 2w, where l is the length and w is width

Plug in the expressions and perimeter:

20 = 2x + 2(x - 2)

Solve for x:

20 = 2x + 2x - 4

20 = 4x - 4

24 = 4x

6 = x

So, the length is 6. Plug this into x - 2 to find the width

x - 2

6 - 2

= 4

So, the length is 6 feet and the width is 4 feet

Answer:

44

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

3x^2

The coefficient is 3

The variable is x

The exponent is 2

Answer:

(.25)(.30) = .075 probability that both children will get the flu

The probability that both a youngster in New York and a kid in Los Angeles will get this season's virus can be determined by duplicating the singular probabilities. Consequently, the likelihood that both will get influenza is 0.075.

To find the probability of the two occasions happening, we duplicate the probabilities of every occasion. Considering that the probability of a kid in New York getting this season's virus is 0.25 (or 25%) and the probability of a youngster in Los Angeles getting influenza is 0.30 (or 30%), we multiply these probabilities: 0.25 * 0.30 = 0.075. This implies there is a 0.075 probability, or 7.5%, that both a youngster in New York and a kid in Los Angeles will get influenza.

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The value of x is 19 and JR is 33 units.

A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are equal in length, and the opposite angles are equal in measure.

From the question, the information available from the question is:

KR = x + 7,

KM = 3X - 5, and

JL = 4X - 10

We have to find the values of  X and JR​.

We know that:

In a parallelogram, this one in particular:

KR = RM

JR = RL

Also, we know that:

KM = KR + RM, but since KR and RM are the same length, the equation will be:

KM = 2KR.

3x - 5 = 2(x + 7)

3x - 5 = 2x + 14

x = 19.

JL = 4x - 10

JL = 4(19) - 10

JL = 66

Knowing that JR = RL and JL is 66 units long, JR = RL = 33 units each.

Hence, The value of x is 19 and JR is 33 units.

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Answer:

C. Leo scored points in 3/10

Step-by-step explanation:

30% is 30/100

So also 3/10

Answer:

36

Step-by-step explanation:

Step-by-step explanation:

Since the ratio is 5:3, then we can divide 60 by 5 to find out how much we should be multiplying 3 by.

60÷5=12

Since the result is 12, then we have to multiply 3 by 12 to get the son's age.

3×12=36.

So, the son's age is 36.

We can check this by dividing both sides by 12 and if we get 5:3, then it is correct.

60÷12=5

36÷12=3

Ratio: 5:3

So, it is correct.

Answer:

36 years old

Answer:

22.5/23

Step-by-step explanation:

sum of ratio=5+3=8

father's age =60

son's age =3/8×60=22.5 (23 if rounded)

Answer:

Largest whole number that divides evenly into both numbers.

Step-by-step explanation:

GCF is greatest common factor. It is also known as LCM of lowest common multiple.

It is the set of whole numbers that divides evenly into all numbers with zero remainder.

For example, three numbers are 8,12 and 20.

The factors of 8 are: 1, 2, 4, 8

The factors of 12 are: 1, 2, 3, 4, 6, 12

The factors of 20 are: 1, 2, 4, 5, 10, 20

The GCF of these three numbers is 4. 4 divides evenly into all numbers.

Hence, the correct option is (B).

Answer:

A and E

Step-by-step explanation:

hope yall have a great day!

The values of E(y), Var(y) and SD(y) are E(y) = 0.83, Var(y) = 0.02 and SD(y) = 0.14

From the question, we have the following parameters that can be used in our computation:

f(y) = 5y⁴

The interval is given as

0 ≤ y ≤ 1

To calculate E(y), we use

E(y) = ∫y * f(y) dy

So, we have

E(y) = ∫y * 5y⁴ dy

E(y) = ∫5y⁵ dy

Integrate

E(y) = 5/6y⁶

Using the interval values, we have

E(y) = 5/6 * (1 - 0)⁶

E(y) = 5/6

E(y) = 0.83

To calculate Var(y), we use

Var(y) = E(y²) - (E(y))²

Where

E(y²) = ∫y² * f(y) dy

So, we have

E(y²) = ∫y² * 5y⁴ dy

E(y²) = ∫5y⁶ dy

Integrate

E(y²) = 5/7y⁷

Using the interval values, we have

E(y²) = 5/7 * (1 - 0)⁷

E(y²) = 5/7

Recall that

Var(y) = E(y²) - (E(y))²

So, we have

Var(y) = (5/7) - (5/6)²

Var(y) = 0.02

To calculate SD(y), we have

SD(y) = √Var(y)

This gives

SD(y) = √[(5/7) - (5/6)²]

Evaluate

SD(y) = 0.14

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Question

Suppose that the random variable has a continuous distribution with the pdf (y)=5y4, 0≤y≤1 Find E(y), Var(y) and SD(y)

Answer:

To calculate the gradient of a straight line you choose two points on the line itself.

From the two points we calculate:

The difference in height (y co-ordinates) ÷ The difference in width (x co-ordinates).

If the answer is a positive value then the line is uphill in direction.

If the answer is a negative value then the line is downhill in direction.

Step-by-step explanation:

Answer:

1.52

Step-by-step explanation:

....

Answer:

L=126

U=54

Step-by-step explanation:

L=180-54

L=126

for angle U, imagine there's letter Z. the angle is the same as the angle beside L