PLS HELP! If m(x) = 2x3 – 3x + 12, what is the value of m(-2)?

Answer:

Margin of error = 4.21 ounces  

Step-by-step explanation:

According to the Question,

Therefore, Sample mean = 31 ounces  ,  Sample size(n) = 25 , Alpha(α) = 0.10 & Population standard deviation(σ) = 12.8 ounces

Putting The Values, We get

1.645 × (12.8 / √25 ) ⇒ 4.2112 ≈ 4.21

Thus, the maximum margin of error associated with a 90% confidence interval for the true population mean turtle weight is 4.21 ounces

Answer:

Step-by-step explanation:

102 + 102 + 24x + 24x - 18 - 18 = 360

204 + 48x - 36 = 360

204 + 48x = 360 + 36

204 + 48x = 396

48x = 396 - 204

48x = 192

x = 192/48

x = 4

Answer:

x = 4. . . .. . . . ... . . . .

. .. . . .. . .

Answer:

7

Step-by-step explanation:

3 combos

2 tacos

1 drink

3 combos × 2 taco = 6

6 is for the combos and tacos.

6 + 1 drink = 7

they have 7 altogether

Answer:

[tex]3 \frac{3}{4}\\[/tex]  /  3.75

Step-by-step explanation:

Step 1: Make all the mixed numbers, improper fractions:

[tex]5 \frac{1}{3} = \frac{16}{3}[/tex]

[tex]7\frac{5}{6} = \frac{47}{6}[/tex]

[tex]6\frac{1}{4} =\frac{25}{4}[/tex]

In order to add/subtract fractions, they must all have a common denominator, the smallest common denominator for all these fractions is 12. And so in order to make 12 the denominator, we must now multiply all the fractions by their multiple.

[tex]\frac{16}{3} = \frac{64}{12}[/tex]

[tex]\frac{47}{6} = \frac{94}{12}[/tex]

[tex]\frac{25}{4} = \frac{75}{12}[/tex]

Time to solve:

[tex]\frac{64}{12} -\frac{94}{12} + \frac{75}{12} =[/tex]

[tex]\frac{-30}{12} + \frac{75}{12} =[/tex]

[tex]\frac{45}{12}[/tex]

Simplify:

[tex]\frac{45}{12} = \frac{15}{4}[/tex]

Convert to a mixed number:

[tex]3 \frac{3}{4}[/tex]

Hope this helps!

Answer:

24 and 32

Step-by-step explanation:

Let their present ages be x and y

Therefore, x

[tex] \frac{x}{y} = \frac{3}{4} [/tex]

we have 4x = 3y

4x - 3y = 0......................(I)

After four years,

[tex] \frac{x + 4}{y + 4} = \frac{7}{9} [/tex]

we have, 9(x + 4) = 7(y + 4)

9x + 36 = 7y + 28

9x - 7y = -8 ........................(ii)

Solving (I) and (ii) simultaneously

4x - 3y = 0

9x - 7y = -8

multiply eqn I by 9 and equation (ii) by 4 and subtract result

36x - 27y = 0...............(iii)

36x - 28y = -32...........(iv)

subtracting (iv) from (iii) we have,

y = 32

substituting y back in equation (I)

4x - 3y = 0

4x -3(32) = 0

4x - 96 = 0

4x = 96

x = 24

Their ages are 24 and 32

Answer:

its 238,535km²

Step-by-step explanation:

i hope it helps alot

What is the area of Ghana?

ඞ Ghana covers an area of [tex]\sf\purple{238,535\: km²}[/tex].

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]

Answer:

The cosine function is: adjacent/hypotenuse = cos (40). We know the hypotenuse length is 10, so the equation is now adjacent/10 = cos (40). Solving for adjacent length we get 7.7 inches.

Answer:

the answer is B: 7.7 inches

Step-by-step explanation:

did the test go 100%

Answer:

The theater sold a higher ratio of Senior tickets to Adult tickets on the first night.

Step-by-step explanation:

Rate of senior tickets to adult tickets:

Can also be interpreted as the percentage of senior tickets, out of the number of total tickets, which is the number of senior tickets multiplied by 100% and divided by the number of total tickets.

The first night, 19 Senior tickets and 57 Adult tickets were sold.

19 out of 19 + 57 = 76. So

19*100%/76 = 25%

The second night, 20 Senior tickets and 62 Adult tickets were sold.

20 out of 20 + 62 = 82. So

20*100%/82 = 24.39%

25% > 24.39%, so the theater sold a higher ratio of Senior tickets to Adult tickets on the first night.

Answer:

[tex]x =9[/tex] --- the critical point

Step-by-step explanation:

Given

[tex]f(x) =36x -2x^2[/tex]

Required

Determine the critical numbers

First, we differentiate f(x)

[tex]f'(x) = 36 - 4x[/tex]

Set to 0 and solve for x

[tex]36 -4x = 0[/tex]

Make 4x the subject

[tex]4x = 36[/tex]

Solve for x

[tex]x =36/4[/tex]

[tex]x =9[/tex]

Answer:

the numbers that right of the origin on the x axis are positive numbers

Answer:

positive

Step-by-step explanation:

positive runs on the right of x -axis

negative runs on the left of the x-axis

prime and odd will never be running on either side of x-axis

hope it helps!!!!!!

Answer:

Its C. When you are getting ratios, we need to convert the units too...

The correct ratio which is equal to the ratio 5cm:5m:0.02km is,

⇒ 1 : 100 : 400

A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y.

Where, x and y are individual amount of two quantities.

And, Total quantity gives after combine as x + y.

We have to given that;

The ratio is,

⇒ 5cm:5m:0.02km

Now, We can simplify the ratio as;

⇒ 5 cm : 5 m : 0.02 km

⇒ 5 cm : 5 x 100 cm : 0.02 x 100000

⇒ 5 cm : 500 cm : 2000 cm

⇒ 1 : 100 : 400

Thus, The correct ratio which is equal to the ratio 5cm:5m:0.02km is,

⇒ 1 : 100 : 400

Learn more about the ratio visit:

https://brainly.com/question/12024093

#SPJ2

Answer:

Step-by-step explanation:

A= P(1+r/100)^n

  = 15000(1+1.5)^10

  = 17408.11 [Ans]

Answer:

Step-by-step explanation:

principal (P)=15000

rate (T)=1.5%

time (R)=10 years

first lets find interest

Interest=PTR/100

=15000*1.5*10/100

=225000/100

=2250

Now total amount he gets after 10 years at the reate of 1.5% is

Amount = Principal + Interest

=15000 +  2250

=17250

Therefore he gets 17,250.

Answer:

The probability that the 2nd Heads occurred at the 4th toss is 5.99%.

Step-by-step explanation:

Given that there were 4 Heads in the first 7 tosses, to find the probability that the 2nd Heads occurred at the 4th toss the following calculation must be performed:

7 - 4 = 3

4/7 x 3/7 x 3/7 x 4/7 = X

0.571 x 0.428 x 0.428 x 0.571 = X

0.0599 = X

Therefore, the probability that the 2nd Heads occurred at the 4th toss is 5.99%.

Answer:

Chris=24

Jane=32

Shen=96

Step-by-step explanation:

Chris= x

Jane = x + 8

Shen = 4x

6x+8= 152

152-8=144

6x=144

144/6=24

x=24

Answer:

[tex]D) 2[/tex]

Step-by-step explanation:

The slope of a line is used to describe the average rate of change. Often referred to as the ([tex]\frac{rise}{run}[/tex]), the general formula to find the slope of a line is the following,

[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

Where ([tex]x_1,y_1[/tex]) and ([tex]x_2,y_2[/tex]) are both points on the line. One is given that the following points are on the line,

[tex](-1, -5)\\\\(6, 9)[/tex]

Substitutes these values into the formula and solve for the slope,

[tex]\frac{9-(-5)}{6-(-1)}[/tex]

Simplify, remember negative times negative equals positive,

[tex]\frac{9+5}{6+1}[/tex]

Combine like terms,

[tex]\frac{14}{7}[/tex]

Simplify further, remember a fraction is another way of representing division,

[tex]2[/tex]

Answer:

Number of  degrees of freedom = 2

Step-by-step explanation:

The degree of freedom in such type of chi-Square test depend on the number of phenotypes of the a particular species produced in a given cross.

Here the total phenotype number is three i.e yellow, purple, or red

Hence, the number of  degrees of freedom = total number of phenotype - 1

Number of  degrees of freedom = total number of phenotype - 1

Number of  degrees of freedom =  3-1

Number of  degrees of freedom = 2

9514 1404 393

Answer:

  22

Step-by-step explanation:

Put -3 where x is and do the arithmetic.

  f(-3) = 3(-3)² -2(-3) -11 = 27 +6 -11

  f(-3) = 22

_____

Additional comment

Sometimes evaluation is easier if you rewrite the polynomial in Horner form:

  f(x) = (3x -2)x -11

  f(-3) = (3(-3) -2)(-3) -11 = -11(-3) -11 = 33 -11 = 22

Answer:

[tex](f+g)(x) = 5x^2 -5x - 3[/tex]

Step-by-step explanation:

[tex]f(x) = 2x^2 + 3x^2 -7x + 2 = 5x^2 -7x + 2\\\\g(x) = 2x - 5\\\\(f + g)(x) = f(x) + g(x) \\[/tex]

              [tex]= (5x^2 - 7x + 2 ) + ( 2x - 5)\\\\= 5x^2 - 7x + 2x + 2 - 5\\\\= 5x^2 -5x - 3[/tex]

Answer:

when n = 2; m = 2 [tex]\frac{4}{5}[/tex]

when m=5;   n = [tex]7\frac{1}{2}[/tex]

Step-by-step explanation:

2n - 5m + 10 = 0

             -10     -10

2n - 5m = -10

2(2) - 5m = -10

 4 - 5m = -10

 -4            -4

      -5m = -14

        -5       -5

           m = 2 [tex]\frac{4}{5}[/tex]

2n - 5(5) = -10

2n - 25 = -10

    +25     +25

2n = 15

2        2

   n = [tex]7\frac{1}{2}[/tex]

Answer:

X =9.75

correct me y'all if am wrong ❤️

Answer:

x= 2,6427...

used computer

Answer: 3 I think

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Let me know if you need a detailed explanation.

Hope this helps!

Answer:

sin = opp/hyp

height  = opp side

hyp = length of string

sin65 = height / 500

multiply both sides by 500

500 * sin 65 = height

use calculator

453.153893518324982 = height

~ 453 feet

Answer:

A) 80,164

B) S_n = (n/2)(17 + n)

Step-by-step explanation:

A) Formula for the nth term of an arithmetic progression series is;

a_n = a + (n - 1)d

a is first term of the series and in this case it is 9.

Difference is d which is 1 since they are consecutive integers.

Thus, For the last term which is 400, we have;

400 = 9 + (n - 1)1

400 - 9 = n - 1

391 = n - 1

n = 391 + 1

n = 392

Thus,there 392 terms in this sequence.

Formula for sum of an AP is;

S_n = (n/2)(2a + (n - 1)d)

S_392 = (392/2)((2 × 9) + (392 - 1)1)

S_392 = 80,164

B) The last term here is k, so we can't know exactly how many terms are in this sequence. Thus, let the number of terms be n.

Now, as above,

a = 9

d = 1

Sum of this AP sequence is;

S_n = (n/2)((2 × 9) + (n - 1)1)

S_n = (n/2)(18 + n - 1)

S_n = (n/2)(17 + n)

A . Perfect square

Step-by-step explanation:

This is your answer

Hope this helps you :)

Answer: B- Perfect cube

Step-by-step explanation: I am smort

Answer:

Alex can buy 12 bottles of lemon-lime soda and 6 bottles of cranberry juice.

Step-by-step explanation:

Since Alex found a new fruit punch recipe that calls for cranberry juice and lemon-lime soda, if cranberry juice costs $ 3.60 per bottle and lemon-lime soda costs $ 1.40 per bottle and the recipe calls for 2 times as many bottles of lemon-lime soda as cranberry juice, to determine at most how many bottles of cranberry juice can he buy if he only has $ 38.40 the following calculation must be performed:

20 x 1.40 + 10 x 3.60 = 64

10 x 1.40 + 5 x 3.60 = 32

12 x 1.40 + 6 x 3.60 = 38.40

Therefore, Alex can buy 12 bottles of lemon-lime soda and 6 bottles of cranberry juice.

This question is incomplete, the complete question is;

Test the claim that the mean GPA of night students is larger than 2.2 at the .10 significance level.

The test is based on a sample of 55 people, the sample mean GPA was 2.23 with a standard deviation of 0.06

Answer:

P-value is less than the significance level.

We reject null hypothesis.

Therefore, there is enough evidence to conclude that the mean GPA of night students is larger than 2.2

Step-by-step explanation:

Given the data in the question;

Claim : The mean GPA of night student is larger than 2.2

μ = 2.2

sample size n = 55

sample mean x' = 2.23

standard deviation s = 0.06

Hypothesis

Null hypothesis            H₀ : μ ≤ 2.2

Alternative hypothesis H₁ : μ > 2.2

Right-tailed Test.

Significance Level ∝ = 0.10

so critical value [tex]t_{(0.10, df=54)[/tex] = 1.297

Test Statistic

T[tex]_{cal[/tex] = (x'-μ) / (s/√n)

we substitute

T[tex]_{cal[/tex] = (2.23 - 2.2 ) / (0.06 / √55)

= 0.03 / 0.00809

T[tex]_{cal[/tex]  = 3.71

T[tex]_{cal[/tex]  is greater than critical value, so it falls in the rejection region;

p-value = P( t > 3.71 ) = 0.000245

P-value is less than the significance level.

We reject null hypothesis.

Therefore, there is enough evidence to conclude that the mean GPA of night students is larger than 2.2

Answer:

Angle DCE is congruent to angle 5 because they are vertical angles. If angle 4 is congruent to angle 5, that means it is also congruent to angle DCE by the transitive property.

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

Hi there!

We're given the triangle ABC with lines AC and BC extended to get the lines AD and BE.

<DEC is formed by lines AD and BE, with C as the vertex.

We're also given that <4≅<5.

You may notice that <DCE and <5 are vertical angles, which means that they share the same vertex (vertex C), and are opposite to each other.

There is a theorem that states vertical angles are congruent.

therefore, <DCE≅<5 by vertical angle's theorem.

But we need to prove that <DCE≅<4

There is a property known as transitivity, where if a=b and b=c, then a=c.

Since both <DCE and <4 are congruent to <5, they also must be congruent to each other via transitivity

Hope this helps! :)