Can someone help me please? How do I solve this?

Step-by-step explanation:

2+2÷500=2.004

2.004÷0.54=3.71111111111

2+2×500=1002

1002÷0.54=1855.55555556

i don't know if * was ÷ or × so I just give you both answers

Answer:

X1=72

X2=x+72

Step-by-step explanation:

The percent increase from July to August is 140%.

Answer:

the answer is 140%.....

Answer:

g(4) = 10

f⁻¹(11) = 1

h{g(4)} =

if h(x) = (10/x) – 3 = 7

if h(x) = 10/(x – 3) = 10/7

____________

f⁻¹(x) = (x - 4) / 7

Answer:

-28x - 21

General Formulas and Concepts:

Pre-Algebra

Step-by-step explanation:

Step 1: Define

7(-4x - 3)

Step 2: Simplify

Answer:

$45

Step-by-step explanation:

This is because the money from Fred's account hasn't been withdrawn yet.

Answer: I have to go with 65

Step-by-step explanation: I think Since he wrote the 45 dollar check I just added 45 to 20 and got 65, because the amount he have in his bank account plus the one check he wrote

The requried, we cannot conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin based on the given data.

To determine if we can conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin, we need to perform a hypothesis test.

We can use a one-sample t-test to test the null hypothesis that the mean cyclic time is equal to 3.5 hours against the alternative hypothesis that the mean cyclic time is greater than 3.5 hours.

Using the given data, we can calculate the sample mean and sample standard deviation of the cyclic times for the six batches produced. The sample mean is:

x = (3.45 + 3.47 + 3.57 + 3.52 + 3.40 + 3.63) / 6
  = 3.50 hours

The sample standard deviation is:

[tex]s = \sqrt ((3.45 - 3.50)^2 + (3.47 - 3.50)^2 + (3.57 - 3.50)^2 + (3.52 - 3.50)^2 + (3.40 - 3.50)^2 + (3.63 - 3.50)^2) / (6 - 1)) }[/tex]
 = 0.086 hours

The test statistic for the one-sample t-test is:
[tex]t = ( \bar x-\mu) / (s / \sqrt(n))[/tex]

where μ is the hypothesized mean cyclic time, n is the sample size, and s is the sample standard deviation.

Substituting the given values, we get:

[tex]t = (3.50 - 3.5) / (0.086 / \sqrt(6))[/tex]
= 0

The degree of freedom for the t-test is n - 1 = 5.

Using a t-table or a calculator, we can find the critical value of t for a one-tailed test with α = 0.05 and 5 degrees of freedom to be 1.833.

Since the calculated t-value of 0 is less than the critical value of 1.833, we fail to reject the null hypothesis. Therefore, we cannot conclude that the mean cyclic time is greater than 3.5 hours based on the given data.

Therefore, we cannot conclude that the mean cyclic time is greater than 3.5 hours for the new process of producing a type of novolac resin based on the given data.

Learn more about the hypothesis here:

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Answer: 3 * -4 = -12

Answer:

four less than three times a number

Step-by-step explanation:

Answer:

$ 9.86

Step-by-step explanation:

Tax = 6% of 9.30

      = 0.06 * 9.30

     = $ 0.558

Total costs = 9.30 + 0.558

                  = 9.858

                  = $ 9.86

Step-by-step explanation:

[tex] {d}^{2} = {a}^{2} + {b}^{2} \\ 41 = 9 + {b}^{2} \\ {b}^{2} = 41 - 9 \\ {b}^{2} = 32 \\ b = \sqrt{32} \\ b = 5.66 \:[/tex]

Answer:

7 :)

Step-by-step explanation:

Answer:

for every 3 trombone players in the band there will be 5 trumpet players in the band

Step-by-step explanation:

example 6 trombone = 10 trumpet

Answer:

5.71

Step-by-step explanation:

x = 20/3.5 = 5.71

Answer : The average rate of change between 1 year and 4 years  of age is 7.33 lbs per year.

Step-by-step explanation :

As we know that the average rate of change between two input values is the total change of the output values divided by the change in the input values.

From the table, we conclude that:

The weight of 1 year of age = 20 lbs

The weight of 4 years of age = 42 lbs

Now we have to determine the average rate of change between 1 year and 4 years  of age.

The input (years) has changed by = 4 years - 1 year = 3 years

The output has changed by = 42 lbs - 20 lbs = 22 lbs

Average rate of change = Output ÷ Input

Average rate of change = [tex]\frac{22\text{ lbs}}{3\text{ years}}[/tex]

Average rate of change = 7.33 lbs per year

Therefore, the average rate of change between 1 year and 4 years  of age is 7.33 lbs per year.

Answer:

B

Step-by-step explanation:

Edge

Answer:

infinitelyyyy, so the third one :)

Answer:

1/3,11/12,9/8

Step-by-step explanation:

Hi! Let's start off with creating common denominators for all three of these fractions.

The LCM (least common multiple) of these three denominators is 24, which means that the three numbers you see at the bottom of the fraction (12, 8, and 3) all in some way have a number that will cause it to multiply to 24, and will make it much more easier to determine the fraction.

1) Change all of the denominators into 24 by multiplying the right number

11/12×2/2=>22/24

9/8×3/3=>27/24

1/3×8/8=>8/24

So now I want you to imagine that the denominators don't exist. From there, you can sort out the fractions from least to greatest! Hope you understood this :)

Answer:

25%    19.2%  45.0%

18.3%   16.7%   34.0%

11.7%     8.3%    20.7%

55.8%   44.2%   100%

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

because...math

Answer:

There are a few (a very few) angles that have relatively "neat" trigonometric values, involving, at worst, one square root. Because of their relatively simple values, these are the angles which will typically be used in math problems (in calculus, especially), and you will be expected to have these angles' values memorized.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Im smart..

Answer:

B) 267.5

Step-by-step explanation:

162.5+105=267.5

Answer:

11/15 is greater

Step-by-step explanation:

Answer:

11/15 is Greater

Step-by-step explanation:

11/15 = 0.7333

11/16 = 0.6875

The correct answer is A) 3 feet.

A 15-foot statue casts the shadow of 20 food, then a 4-foot-long shadow will be cast by a 3-foot-tall person.

The four fundamental operations of arithmetic are addition, subtract, multiply, and division of two or more numbers. Included in them is the study of integers, especially the order of operations, which is important for all other aspects of mathematics, notably algebra, information management, and geometry.

From the data in the question,

15-foot statue = 20-foot shadow

x-foot man's height = 4-foot long shadow

20x = 60

x = 60/20

x = 3 foot.

To know more about arithmetical operations:

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Answer:

you can use decimals

Step-by-step explanation:

Answer:

The factors of given polynomial    x =-1 , -2 and x =3

Step-by-step explanation:

Step(i):-

Given the polynomial  

                    f(x) =  x³ - 7x -6

 put x =-1

               f(-1) = (-1 )³- 7(-1) - 6 = -1+7-6=0

(x+1) is a one factor

By using synthetic division

                   x³    x²      x      constant

     x=-1  ↓   1      0      -7        -6

             ↓   0     -1      1          6

                  1       -1      -6       0    

The polynomial    x² - x - 6

Step(ii):-

The factors ( x+1)(x² - x - 6 ) = 0

     x = -1 and x² - x - 6 =0

    x =-1    and  x² - 3x + 2 x - 6 =0

   x =-1     and  x (x -3) + 2( x-3) =0

   x =-1     and  (x+2)(x-3) =0

Final answer:-

The factors of given polynomial    x =-1 , -2 and x =3