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3 years ago

Write 39/40 as a decimal

Mathematics

2 answers:

malfutka [58]3 years ago

8 0

First you divide 39/40
you would get 0.975

Studentka2010 [4]3 years ago

6 0

Answer:

Given: The fraction $\frac{39}{40}$

The decimal forms of rational number either end or repeat a pattern.

To convert the given fractions to decimals you just divide the top by the bottom or divide the numerator by the denominator.

If the division does not come out, you can stop after a certain number of decimal places and round off that number.

Convert a fraction to decimal :

$\frac{39}{40} =0.975$

Since fraction and decimal represent the same things because numbers are not whole numbers.

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Recently, Caroline purchased a BBQ grill to use this summer. The cost of the grill was $390 and sales tax

Dimas [21]

Sales taxes = 390 *0.074 = 28.86

Total cost : 390+28.86 = 418.86

7 0

2 years ago

Suppose you are going to conduct a two tail test concerning the population mean. Suppose that you do not know what the populatio

IRINA_888 [86]

Answer:

The critical value of t at 0.01 level of significance is 2.66.

Step-by-step explanation:

The hypothesis for the two-tailed population mean can be defined as:

H₀: μ = μ₀ vs. H₀: μ ≠ μ₀

It is provided that the population standard deviation is not known.

Since there is no information about the population standard deviation, we will use a t-test for single mean.

The test statistic is defined as follows:

$t_{cal.}=\frac{\bar x-\mu}{s/\sqrt{n}}\sim t_{\alpha/2, (n-1)}$

The information given is:

n = 55

α = 0.01

Compute the critical value of t as follows:

$t_{\alpha/2, (n-1)}= t_{0.01/2, (55-1)}=t_{0.005, 54}=2.66$

*Use a t-table for the value.

If the desired degrees of freedom are not provided consider he next highest degree of freedom.

Thus, the critical value of t at 0.01 level of significance is 2.66.

4 0

3 years ago

Why is it sometimes best to make a phone call or personal contact when conveying sensitive information?

kupik [55]

It would be best sometimes to make a phone call or personal contact when conveying sensitive information because in this way you can make sure that the information is conveyed directly to the person. Hope this answers the question. Have a nice day.

3 0

3 years ago

Is this right? i’ll give brainliest :)

jek_recluse [69]

It is.

$x-10 \geq 0\\\\x \geq 10\\\\\\-5 +n< -6\\\\n < 5-6\\\\n< -1$

6 0

3 years ago

Read 2 more answers

Graph and label the image of the figure below after a dilation by a factor of 1/2.

neonofarm [45]

Answer:

M' (1.5, -1), F' (2, -1), L' (0.5 -2.5), W' (2.5, -2.5)

see graph below

Explanation:

Given:

The image of a quadrilateral on a coordinate plane

To find:

The coordinates of the new image after dilation of 1/2 have been applied to the original image.

Then graph the coordinates

First, we need to state the coordinates of the original image:

M = (3, -2)

F = (4, -2)

L = (1, -5)

W = (5, -5)

Next, we will apply a scale factor of 1/2:

$\begin{gathered} Dilation\text{ rule:} \\ (x,\text{ y\rparen}\rightarrow(kx,\text{ ky\rparen} \\ where\text{ k = scale factor} \\ \\ scale\text{ factor = 1/2} \\ M^{\prime}\text{ = \lparen}\frac{1}{2}(3),\text{ }\frac{1}{2}(-2)) \\ M^{\prime}\text{ = \lparen}\frac{3}{2},\text{ -1\rparen} \\ \\ F\text{ = \lparen}\frac{1}{2}(4),\text{ }\frac{1}{2}(-2)) \\ F^{\prime}\text{ = \lparen2, -1\rparen} \end{gathered}$ $\begin{gathered} L\text{ = \lparen}\frac{1}{2}(1),\text{ }\frac{1}{2}(-5)) \\ L^{\prime}\text{ = \lparen}\frac{1}{2},\text{ }\frac{-5}{2}) \\ \\ W\text{ = \lparen}\frac{1}{2}(5),\text{ }\frac{1}{2}(-5)) \\ W^{\prime}\text{ = \lparen}\frac{5}{2},\text{ }\frac{-5}{2}) \end{gathered}$

The new coordinates:

M' (3/2, -1), F' (2, -1), L' (1/2, -5/2), W' (5/2, -5/2)

M' (1.5, -1), F' (2, -1), L' (0.5 -2.5), W' (2.5, -2.5)

Plotting the coordinates:

3 0

10 months ago