pls help, you have to write in fraction form.​

Answer:

The answers are 40 : 1 and 16 : 5

Step-by-step explanation:

3. ) 400 : 10

Cancel out two of the zeros to get-

40 : 1

6. ) 1600m : 5km

1 km = 100 m, Therefore-

1600 : 500

Cancel out the zeros to get-

16 : 5

Answer:

they will have to sample 60 machined metal parts

Step-by-step explanation:

Given that;

Margin of Error E = 6.74

at 90% Confidence Interval, z = 1.645  { from table }

Range R = maximum range - minimum range = 220 - 93 = 127

standard deviation σ = R / 4 = 127/4= 31.7500

How many machined metal parts would they have to sample n = ?

to get our sample size, we use the following formula

n = [ zσ / E ]²

we substitute in our values

n = [ 1.645 × 31.7500 / 6.74 ]²  

n = [ 52.2287 / 6.74 ]²  

n = [ 7.7490 ]²          

n = 60.047 ≈ 60  

Therefore, they will have to sample 60 machined metal parts

You can use the margin of error with the z value and standard deviation to get the result.

The number of metal machine parts would be 60.

The number of machined metal parts that have to be sampled.

Range = Max. value - min. value = 220 - 93 = 127

The standard deviation is approximately the quarter of the range of the distribution.

Thus, [tex]\sigma = 127 \div 4 = 31.75[/tex]

For 90% confidence, the z value is 1.645 (from z tables)

Thus, from the formula for size of sample, we have:

[tex]n = (\dfrac{z\sigma}{E})^2 = (\dfrac{1.645 \times 31.75}{6.74})^2 = (7.749)^2 \approx 60[/tex]

The number of metal machine parts would be 60.

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Answer:

the correct answer is 131

Step-by-step explanation:

5^3 +3(2)

= 125 +6

=131

Answer: y = 2

Step-by-step explanation: Horizontal means y =

Answer:

○ [tex]\displaystyle y = 2[/tex]

Step-by-step explanation:

This is a STRAIT HORISONTAL LINEAR EQUATION, therefore sinse every x-coordinate will have the same y-coordinate of [tex]\displaystyle 2,[/tex] this is the option you would pick.

I am joyous to assist you at any time.

Answer:

AYYYYYYYYYYYY YO IS SNOOP DOGG

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

Answer:

x  ≥  20

Step-by-step explanation:

hope this helps!

Answer:

x>= 20 or 20≤x

Step-by-step explanation:

Isolate x

Subtract 6 from both sides:

x/-5<=-4

Multiply both sides by -5, and switch the inequality sign bc u multiplied by a negative number:

x>= 20

Answer:

d

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

Answer:

2 hours

Step-by-step explanation:

Answer:

7Hrs because 84-35=49

49/7=7

Answer:

Could you show the diagram?

Answer:

D. 6

Step-by-step explanation:

Answer: d) A one-sample z-interval for a population proportion

Step-by-step explanation:

For the scenario described above, since only a single sample pool is required from a single population, then ; The one sample Z interval for a population proportion is required ;

The interval may be calculated using the relation :

Z = (p - p0) / √[(p0(1 - p0)) / n]

p = observed proportion ;

p0 = mean or hypothesized value

n = sample size

Answer:

A two-sample  z -interval for a difference in population proportions

Explanation:

A two-sample z-interval is appropriate for estimating the difference between two population proportions.

Answer:

I think the first one is the answer

Answer:

the second one I'm pretty sure

Step-by-step explanation:

Answer:

its definitely B

Step-by-step explanation:

Answer:

10

Step-by-step explanation: i took the test

Answer:

um what

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

[tex]\frac{17b - a^{2} }{2}[/tex]

Substitute the "a" and "b"

a = 8

b = 6

[tex]\frac{17 * 6 - 8^{2} }{2}[/tex]

[tex]\frac{17 * 6 - 64}{2}[/tex]

[tex]\frac{102 - 64}{2}[/tex]

[tex]\frac{38}{2}[/tex]

[tex]19[/tex]

Hope this helped!

Have a supercalifragilisticexpialidocious day!

Answer:

[tex]23.1\%[/tex]

Step-by-step explanation:

Stefanie's mixture of 18 grams has a 20% sugar content. Therefore, there are  grams of sugar in her syrup.

John's mixture of 30 grams has a 25% sugar content. Therefore, there are  grams of sugar in her syrup.

Therefore, if they mix their syrups together, there will be 11.1 grams of sugar and 48 total grams of content.

The concentration of sugar in the new mixture is [tex]\frac{11.1}{48}=\fbox{$23.1\%$}[/tex](rounded to one decimal place).

The concentration in the new mixture is 23.1%.

The percentage is defined as a ratio expressed as a fraction of 100.

For example, If Misha obtained a score of 67% on her exam, that corresponds to 67 out of 100. It is expressed as 67/100 in fractional form and as 67:100 in ratio form.

Stefanie's 18-gram combination has 20% sugar. As a result, her syrup contains grams of sugar.

John's 30-gram combination contains 25% sugar. As a result, her syrup contains grams of sugar.

As a result, if they combine their syrups, there will be 11.1 grams of sugar and 48 total grams of the substance.

The new combination has a sugar percentage of 11.1/48 = 23.1%. (rounded to one decimal place).

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Answer:

Step-by-step explanation:

Let the cos be x, then selling price is:

We have the selling price $487.20

Cost price is $464

Answer:

it is : 2393%

Step-by-step explanation:

Answer:

the  amount that pay to the agency is $1,091.67

Step-by-step explanation:

The computation of the amount that pay to the agency is as follows:

= Amount paid per year ÷ number of months × 25%

= $52,400 ÷ 12 months × 25%

= $1,091.67

Hence, the  amount that pay to the agency is $1,091.67

We simply applied the above formula so that the correct amount could come

Answer:

B)   All real values of 'x' where -2 < x< 4

Step-by-step explanation:

Explanation:-

Given function f(x) = (x +2 ) ( x-4)

                  (x+2)(x-4) =0

          ⇒  x +2 =0 and x-4=0

          ⇒  x =-2   and x=4

From graph

       Given parabola lies between the x=-2 and x =4

∴ All real values of 'x' lies between x=-2 and x =4

 All real values of 'x' lies -2 < x< 4

Answer:

104.40

Step-by-step explanation:

100 * 2% = 102

102 * 2% =104.4

There are three commonly used trigonometric identities.

Sin x = 1/ cosec x

Cos x = 1/ sec x

Tan x = 1/ cot x or sin x / cos x

Cot x = cos x / sin x

Sin 30 = 5/x

Sin 30 = 1/2

x = 10

The length of the side x is 10.

There are three commonly used trigonometric identities.

Sin x = 1/ cosec x

Cos x = 1/ sec x

Tan x = 1/ cot x or sin x / cos x

Cot x = cos x / sin x

We have,

The length of side x can be calculated using the trigonometric identities.

We know that,

Sin x = Perpendicular / Hypotenuse

Sin 30 = 5 / x

1/2 = 5/x

Multiply 2 on both sides.

1= 10/x

x = 10

Thus,

The length of the side x is 10.

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