The mass of an adult North Pacific right whale is about 70,000 kg, or 7 x 104
kg.
The mass of a male polar bear is about 700 kg, or 7 x 10² kg.
About how many times more massive is the right whale than the polar bear?

The test statistic, using the z-distribution, is given as follows:

z = 1.12.

At the null hypothesis, it is tested if there is not enough evidence that the proportion is greater than 20%, that is:

[tex]H_0: p \leq 0.2[/tex]

At the alternative hypothesis, it is tested if there is evidence that the proportion is greater than 20%, that is:

[tex]H_0: p > 0.2[/tex]

The test statistic is given by the equation presented as follows:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

In which the variables of the equation are listed as follows:

In the context of this problem, the values of these parameters are given as follows:

[tex]p = 0.2, n = 500, \overline{p} = \frac{110}{500} = 0.22[/tex]

Hence the test statistic is given as follows:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

[tex]z = \frac{0.22 - 0.2}{\sqrt{\frac{0.2(0.8)}{500}}}[/tex]

z = 1.12.

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Answer:

do you speak English

Step-by-step explanation:

Amy weighs 150 pounds on earth and 350 on another planet. Find West lose weight on that planet if he weighs 130 pounds on earth.

Answer:

x = 0

Step-by-step explanation:

Substitute g(x) for x-5 in the equation,

x-5 = -5

collect like terms or add 5 to both sides

x = -5+5

x = 0

The system of equations are graphed in the image below, showing that they have infinitely many solutions, which include (3, 0) and (0, 3).

The values of a pair of x and y that will make two different equations in a system true is the solution to the system of equations.

By graphing, we can determine the solution by finding the x and y coordinates of the point that both lines of the equations intersect at.

The lines of x + y = 3 and 5x + 5y = 15 are graphed in the image below, which is the same blue line. This shows that the equations have infinitely many solutions such as (3, 0) and (0, 3).

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[tex]2x+y+3\sqrt 5=0[/tex]

​

Step-by-step explanation:

hope this helped

When one flip three coins eight times, there no guarantee to get three heads at least once as the probability is low.

Probability is the occurence of likely events. It is the area of mathematics that deals with numerical estimates of the likelihood that an event will occur or that a statement is true.

An event's probability is a number between 0 and 1. In this case, 0 denotes the impossibility of the event and 1 represents certainty.

The probability of getting a head in a coin is 1/2.

Therefore, the probability of getting three heads on there flips will be:

= P(head)³

= 1/2 × 1/2 × 1/2

= 1/8

Therefore, the probability is low and the heads aren't guaranteed.

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Answer:

C

Step-by-step explanation:

The first term is 4x.  The first term is the product of 4 and x.

Answer:

9: 71 , 10: 110, 11: 52

Step-by-step explanation:

the sum of angles in a triangel is 180°

so for 9:

180 = 78 + 31 + x

180 - 78 - 31 = x = 71

it's a sharp triangel because all angles are smaller than 90°

you can calculate the angles of 10 and 11 the same way

which gives 10: 110°

this is a stump triangel because there s an angle greater than 90°

The last one is a right triangel because it has a 90° angle (marked with the square)

[tex]\qquad \textit{Amount for Exponential Decay} \\\\ A=P(1 - r)^t\qquad \begin{cases} A=\textit{current amount}\dotfill & 2\\ P=\textit{initial amount}\dotfill &18\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years \end{cases}[/tex]

[tex]2=18(1 - 0.04)^{t}\implies \cfrac{2}{18}=(1 - 0.04)^{t}\implies \cfrac{1}{9}=0.96^t \\\\\\ \log\left(\cfrac{1}{9} \right)=\log(0.96^t)\implies \log\left(\cfrac{1}{9} \right)=t\log(0.96) \\\\\\ \cfrac{\log\left(\frac{1}{9} \right)}{ ~~ \log(0.96) ~~ }=t\implies 53.82\approx t\qquad \textit{about 53 years and 301 days}[/tex]

It will take approximately 54 years for the element to decay from 18 grams to 2 grams at a rate of 4% per year.

An exponential function is defined as a function whose value is a constant raised to the power of an argument is called an exponential function.

To determine how long it takes for an element to decay from 18 grams to 2 grams, you can use the formula:

t = (ln(A/B)) / (-r)

where:

t is the time it takes for the decay to occur

A is the initial amount of the element, in this case 18 grams

B is the final amount of the element, in this case 2 grams

r is the decay rate, in this case 4% per year

Plugging these values into the formula gives you:

t = (ln(18/2)) / (-0.04)

t = (ln(9)) / (-0.04)

t = (2.1972) / (-0.04)

t = -54.30

Hence, It will take approximately 54 years.

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Using the factorization of polynomial, the factor of the given expression is (3x-4)(x+2).

In the given question we have to find the each polynomial expression of 3x^2+2x-8.

The given expression is 3x^2+2x-8.

Now finding the factor of the given expression.

The multiply of the first and third variable is 24. The middle term is 2.

So the possible factor is 6 and 4.

3x^2+2x-8 = 3x^2+(6-4)x-8

3x^2+2x-8 = 3x^2+6x-4x-8

3x^2+2x-8 = 3x(x+2)-4(x+2)

3x^2+2x-8 = (3x-4)(x+2)

Hence, the factor of the given expression is (3x-4)(x+2).

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The right expression is 3x^2+2x-8.

Answer:

7.65643191

Step-by-step explanation:

2.3^2 = 5.29      √5.6 = 2.36643191324

5.29 + 2.36643191324 = 7.65643191

Answer:

It is the method by multiplication

Step-by-step explanation:

5×5=25

Answer:

The number opposite the product of 1/15 and 1/16 will be 240.

Step-by-step explanation:

Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and precisely.

The number opposite the product of 1/15 and 1/16 will be given as,

            1

_____________

     (1/15)*(1/16)

        1

     ____

     1/240

      240

Answer:

  f(x) = 3(x +1)² +2

Step-by-step explanation:

You want the equation in vertex form of the parabola 3x² after its vertex is translated to (-1, 2).

The given form is the "vertex form" of the equation for a parabola. That is, in the form ...

  f(x) = a(x -h)² +k

the value of 'a' is the leading coefficient, the scale factor, and the values of h and k are the x- and y-coordinates of the vertex.

Given that the scale factor of the desired parabola is a=3, and the desired vertex is (h, k) = (-1, 2). we can fill in these values in the equation to get ...

  f(x) = 3(x -(-1))² +2

  f(x) = 3(x +1)² +2

For the given recursive formula of the sequence , the value of A₈ = -17.

As given in the question,

Recursive formula of the sequence is given by,

Aₙ = 2Aₙ₋₁  - 3Aₙ₋₂

And the value of

A₁ = -1 , A₂ = 1

Substitute the n = 3 , 4, 5, 6, 7, 8  in the recursive formula to get the value of A₈ we have,  

A₃ = 2A₂ - 3A₁

    = 2(1) -3(-1)

    = 5

A₄= 2A₃ - 3A₂

    = 2(5) - 3(1)

    = 7

A₅ = 2A₄ - 3A₃

    = 2(7) - 3(5)

    = -1

A₆ = 2A₅ - 3A₄

    = 2(-1) - 3(7)

    = -23

A₇ = 2A₆ - 3A₅

   = 2(-23) - 3(-1)

   = -43

A₈ = 2A₇ - 3A₆

    = 2(-43) - 3(-23)

    = -17

Therefore, for the given recursive formula of the sequence , the value of A₈ = -17.

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The possible combinations are

Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant. You can choose the components of combos in any order. Permutations and combinations can be mixed up.

Given:

A snack machine sells Crisps (C), Cereal Bars (B) and Soft Drinks (S).

Jesse buys 2 different drinks at random.

So, the possible combinations for the drinks she buys are:-

CB, CS, BC, BS, SC, SB

Since the order in which Jesse bought the drink does not matter, the possible combinations are

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Value of m is -4

Value of x is 5

To solve linear equations, follow the following steps:

Equation 1.

2-6m = -4m+10

6m-4m = 2-10

2m = -8

m = -8/2

m = -4

Value of x is -4

Equation 2.

2.5+1.75 = -3.25+1.5x

1.5x = 4.25+3.25

1.5x = 7.5

x = 7.5/1.5

x = 5

Value of x is 5

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The slope of a line that passes through the points (1,−2) and (2,2) is 4.

The two given points are (1,-2) and (2,2).

We have to find out the slope of the line that passes through the two given points.

We know that the slope of a line passing through two points ([tex]x_{1} ,y_{1}[/tex]) and ([tex]x_{2} ,y_{2}[/tex]) is -

[tex]m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

Using this formula for the given points (1,-2) and (2,2), we can find out the slope of the line passing through them as -

[tex]m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }\\= > m = \frac{2-(-2)}{2-1}\\ = > m = \frac{4}{1}\\ = > m = 4[/tex]

Thus, the slope of a line that passes through the points (1,−2) and (2,2) is 4.

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The value at which acceleration is zero is t = 5/3

Acceleration is defined as the rate at which velocity changes with time, in terms of both speed and direction

Given: the equation of motion, velocity, s = t⁶ - 2t⁵

Since acceleration is the rate at which velocity changes with time.  You need to differentiate the velocity with respect to time. Thus:

ds/dt = 6t⁵ - 10t⁴                  (Note: ds/dt is the acceleration)

Also, acceleration is equal to zero. That is:

6t⁵ - 10t⁴ = 0

6t⁵ = 10t⁴

6t = 10

t = 10/6 = 5/3

Therefore, the value of t at which acceleration is zero is t = 5/3

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Answer:

Step-by-step explanation:

Let the number of small boxes is s and number of large boxes is l.

s and l are our variables.

Total number of boxes is 21:

This is your first equation.

The volume of a small box is a (since it is not given, if you have it please replace it with that number), and the volume of all small boxes is as.

The volume of a larger box is 14 cubic feet, and the volume of all large boxes is 14l cubic feet.

Total volume is 252 cubic feet, add the two volumes together:

And this is your second equation (don't forget to replace a with the volume of a small box).

Using prime factorization to rewrite 156 +36 as a product of the GCF and a sum of numbers will be 12(13 + 3).

Prime factorization simply means the process of writing all numbers based on the product of their prime.

In this case, it's important to note that:

156 = 13 × 12

36 = 3 × 12

Therefore, 156 + 36 will be:

= 12(13 + 3)

This illustrates the numbers.

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Answer:

21

Step-by-step explanation:

√441

Take factors of 441

-> 1,3,7,9,21,49,63,147,441

If you know all of them like this and it’s an odd number, find the middle value that doesn’t have a pair and it’s 21.

If you don’t just take a different value that has a square root. Let’s do 9.

Separate the root into √9*49

Woah, both of those are squares!!

Take the square root of both of those numbers

√9*√49

3*7=21, voila.

It is very easy, we just have to take the square root as it tells us in the problem:

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \red{ \sqrt{441 }} = \orange{21}[/tex]

You may ask ¿why 21?

[tex]\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \red{21 \times 21} = \orange{441} [/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf So , \: the \: result \: is \\ \sf \: \: \: \: \longmapsto \orange{21} [/tex]

Answer:

-5/4

Step-by-step explanation:

Step 1: Convert to algebraic equation.

4x +7 = 2

Step 1: Subtract 7 from both sides.

4x +7 −7 = 2 −7

Step 2: Divide both sides by 4.

(4x /4) = (-5 /4)

Step 3: Get your answer!

x = -5/4

Answer:

x = -1.25

Step-by-step explanation:

A number = x

7 + 4x = 2

Subtract 7 on both sides

4x = -5

Divide both sides by 4

x = -1.25 OR -5/4

For the given defined function f(x) for all real numbers , value of required function are as follow:

f(-1)  = -2 , f(2) = 4 and f(5) = -1.

As given in the question,

Function is defined as follow for all the real numbers,

f( x ) = -2  , if x ≠ 2

f(x) = 4 , if x =2

Values of the required function is given by :

f ( -1 )  for the required function x = -1 which is not equal to 2.

Hence , f( -1 ) = -2

f ( 2 )  for the required function x = 2 which is equal to 2.

Hence , f( 2 ) = 4

f ( 5 )  for the required function x = 5 which is not equal to 2.

Hence , f(5 ) = 4.

Therefore, for the given defined function f(x) for all real numbers , value of required function are as follow:

f(-1)  = -2 , f(2) = 4 and f(5) = -1.

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The probability that their babies would have brown wool will be 25%.

When two or more alleles for the same characters are present at the same loci on homologous chromosomes, a cell, a nucleus, or a single organism is said to be heterozygous. In contrast to homozygous, where the alleles are identical, it signifies that the alleles that code for the same gene or characteristic are different.

Given, the two-parent sheep would need to have heterozygosity for their genotype if we were to assume straightforward Mendelian genetics. Black would not be dominant in this situation; instead, the parents would be, shall we say, Rr for color. Imagine that each parent can only contribute one allele (either the R or the r). If both should chance to deliver the r, the child would be black.

Therefore, 25% of the following generation's children are likely to be black. There would be a 25% probability of a homozygous dominant offspring, a 50% chance of a heterozygous offspring, and a 25% chance of a homozygous recessive offspring if you filled out a Punnett square for this issue. Since white is the dominant allele in this situation, both the homozygous dominant allele, which accounts for 75% of the possibilities and the heterozygous child will be white. Since two recessive alleles are required to manifest the recessive phenotype, the remaining 25% of people are black.

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Answer:

7.00

Step-by-step explanation:

36.8/ (11.5-6.25) = 7.00952380952                                                                                       Now just pick two first numbers two there you go.                                                                Dam being a 6 grader Wow