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4vir4ik [10]
3 years ago
10

Pls help will give brainliest

Mathematics
1 answer:
spayn [35]3 years ago
6 0

Answer:

7

Step-by-step explanation:

Let the width of the mechanical pencil lead be w_m and the width of a human hair be w_h. We are trying to find the number of widths of pieces of hair (let that be n) that make it equal to the width of a mechanical pencil lead, so we write the equation w_m=n*w_h. Hopefully, writing an equation makes this easier to understand!

Now, I want n, so I divide be w_h on both sides, substitute, and get that n = w_m/w_h = (7*10^-4)/(1*10^-4)

The 10^-4’s cancel, so we get n = 7/1 = 7.

I hope this helps! :)

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Determine the missing value the completes the equation 3/10+13/100=
fredd [130]

Answer:

0.43

Step-by-step explanation:

6 0
3 years ago
Need some help please :)
BlackZzzverrR [31]

Answer:

yeah she is

in y = m*x + <u>b </u>

b is the initial value or the y-intercept.

Step-by-step explanation:

7 0
3 years ago
a city ordinance requires that more than 75% of its residents must agree to the construction of new public buildings (using tax
mestny [16]

The value of the standardized test statistic for this significance test is 1.7265

Standardized test statistic

In statistics, the standardized test statistic means a way for you to compare your results to a “normal” population.

Given,

A city ordinance requires that more than 75% of its residents must agree to the construction of new public buildings (using tax dollars) before any such structures can be built. a proposal has been made to build a new recreational facility in the city, and sponsors of the proposal want to conduct a small survey to see if it would be approved if put to an official vote of all residents. a simple random sample of 150 residents revealed that 123 supported a change (and 27 did not).

Here we need to find the value of the standardized test statistic for this significance test.

While we looking into the given question we have identified the following values,

Random samples = 150

Supported values = 123

Not supported = 23

Aggreged percentage = 75%

So, the null and alternative hypotheses were as follows: H0: p = 0.75 and Ha: p ≠ 0.75.

Then the value of Standardized test statistic is calculated as,

=> (150 - 123) / (75 / √23)

=> 1.7265

To know more about Standardized test statistic here

brainly.com/question/16695849

#SPJ4

4 0
1 year ago
PLEASE HELP ME ON THIS I NEED IT NOW
julia-pushkina [17]

Answer:

Solution : (36, 42)

Step-by-step explanation:

It mention that the image is dilated by a scale factor of 6, and hence we will have to multiply each coordinate by 6 to receive the dilated point. Here we only want the dilation of point B,

B' = (6 * 6, 7 * 6) = (36, 42)

If quadrilateral ABCD is dilated by a scale factor of 6, then the coordinates of point B' are (36, 42).

3 0
3 years ago
If y varies directly with an x and y=12 when x=-1, find y if x=2
borishaifa [10]

Answer:

y = -24

Step-by-step explanation:

Direct variation is

y = kx  where k is a constant

12 = k*(-1)

12/(-1) =k  

-12 = k

The equation is y = -12x

Let x = 2

y = -12(2)

y = -24

4 0
3 years ago
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