3 years ago

Order the numbers from least to greatest. 7.8 7.88 7.78 7.87 7.77

Mathematics

1 answer:

Zarrin [17]3 years ago

5 0

Answer:

7.77 7.78 7.8 7.87 7.88

Step-by-step explanation:

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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

I'll give you brainiest and 20 points if you answer this

Black_prince [1.1K]

Answer:

its either a or a or d

Step-by-step explanation:

7 0

3 years ago

C(n) = -7 + 6(n - 1)

Pavel [41]

Answer:

6n-13

Step-by-step explanation:

Since the question given is -7+6(n-1)

-7+6(n-1)

Open the bracket first

-7+6n-6

Collect like terms

-7-6+6n

-13+6n

Which can also be written as

6n-13

So C(n)=6n-13

5 0

3 years ago

Solve for r: -6+4r=2(r-4)<br> A) -1<br> B) 1<br> C) -12<br> D) 12

NISA [10]

Answer:

A) r = -1

Step-by-step explanation:

ur welcome

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3 years ago

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If you know the rate of a water leak in gallons per hour, how can you find the number of hours it takes for 1 gallon to leak out

marusya05 [52]

You could make a small (easily repaired) leak and watch it for the amount of time you need to conclude what you need to.

5 0

3 years ago