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3 years ago

Tell the decimal number that is the best estimate of the fraction 29 over 40. Explain your reasoning.

Mathematics

2 answers:

levacccp [35]3 years ago

8 0

Answer:

29/40=.725

Step-by-step explanation:

dont know how to explain it, just divide 29/40.

Ipatiy [6.2K]3 years ago

6 0

Answer:

Step-by-step explanation:

29/40

29 ÷ 40

the answer is 0.725 all you have to do is divide the numerator by the denominator

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Whats 1,112,433 rounded to the nearest ten thousand

mamaluj [8]

1,112,433 rounded to the nearest 10,000 is 1,110,000.

4 0

4 years ago

The useful life of a certain piece of equipment is determined by the following formula: u=(8d)/h^2, where u is the useful life o

Anni [7]

Answer:

The correct answer is E.

Step-by-step explanation:

First I look for the relationships between the coefficients. The first term corresponds to the base value.

$\frac{8*d}{h^{2}} = \frac{8}{1} * \frac{d}{h^{2} }$

The second term corresponds to the value obtained when the density of the underlying material is doubled and the daily usage of the equipment is halved.

$\frac{2*8*d}{(0,5*h)^{2}} = \frac{16*d}{0,25 * h^{2}} = \frac{16}{0,25} * \frac{d}{h^{2} }$

With the I get the ratio of coefficients of $\frac{d}{h^{2}}$ :

$\frac{8}{1}$ = 8

$\frac{16}{0,25}$ = 64

Now I calculate the percentage increase in the useful life of the equipment as:

% = $\frac{64}{8}$ * %100 = %800

3 0

4 years ago

Write the slope-intercept form of the equation of the line that is perpendicular to AB and passes through Point X Show

Fynjy0 [20]

Answer:

y = 12/5x + 22

Step-by-step explanation:

First, let's find the slope of the AB line.

y2 - y1 / x2 - x1

3 - 8 / 2 - (-10)

-5 / 12

= -5/12

When a line is perpendicular to something, the slope becomes the opposite.

y = 12/5x + b

10 = 12/5(-5) + b

10 = -12 + b

22 = b

4 0

3 years ago

Plz show work and answer thx u will get 100 points and make sure it's right

netineya [11]

For Answer A, it is 3/4 because there are 4 donuts in total and you have 3 glazed and 1 chocolate, so it will be 3 over 4.
For Answer B, it is 75% because 3 over 4 is 0.75 and if you put it in percentage, then it will be 75%.

7 0

3 years ago

If two polygons are similar with the lengths of their corresponding sides in the ratio of a/b , then the ratio of their areas is

MakcuM [25]

Answer:

The ratio of their areas is $\frac{a^{2}}{b^{2}}$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor and the ratio of its areas is equal to the scale factor squared

Let

z -----> the scale factor

In this problem the scale factor is equal to

$z=\frac{a}{b}$

therefore

the scale factor squared is equal to

$z^{2} =\frac{a^{2}}{b^{2}}$

8 0

4 years ago