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2 years ago

Marta y su hermano leyeron un libro cada uno el domingo pasado

Mathematics

1 answer:

laila [671]2 years ago

3 0

Marta leyó 1,625 veces la cantidad de páginas leída por su hermano.

En esta pregunta debemos determinar la razón ( $r$ ) de la cantidad de páginas leída por Marta ( $x$ ) a la cantidad de páginas leída por su hermano ( $y$ ). Es decir,

$r = \frac{x}{y}$ (1)

Si sabemos que $x = 52$ y $y = 32$ , entonces la razón definida al principio de esta respuesta es:

$r = \frac{52}{32}$

$r = 1,625$

Marta leyó 1,625 veces la cantidad de páginas leída por su hermano.

Invitamos cordialmente a consultar esta pregunta sobre razones aritméticas: brainly.com/question/22962732

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Step-by-step explanation:

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2 years ago

Point O is the center of the circle in the diagram. What is m∠BCA ?

netineya [11]

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so (BOA) = 360-250=110°
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3 years ago

The fracture strength of tempered glass averages 14.1 (measured in thousands of pounds per square inch) and has standard deviati

ololo11 [35]

Answer:

0.15866 is the probability of the average fracture strength of selected 100 pieces of glasses that of exceed 14.3.

Step-by-step explanation:

Given that, the strength of a tempered(x) a glass has average 14.1 and has standard deviation 2.

$\mu_x=14.1$ , $\sigma_x=2$

n=number of selected pieces= 100.

The probability that the average fracture strength of 100 pieces of this glass exceed 14.3 is

$P(\overline X>14.3)=P(\frac{\overline X-\mu_x}{2/\sqrt n}>\frac{14.3-14.1}{2/\sqrt{100}})$

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3 0

3 years ago

Angles 1 and 2 are called?

Nitella [24]

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3 years ago

Read 2 more answers

1400 dollars is placed in an account with an annual interest rate of 5.5%. to the nearest year, how long will it take for the ac

olga_2 [115]

It will take 19 years and 6 months for the account value to reach 2900 dollars

Step-by-step explanation:

Given

Principal amount = 1400 dollars

Rate = 5.5 %

Final value = A = 2900

We have to find t

So,

The formula for simple interest is:

$A = P(1+rt)$

Putting values

$2900 = 1400(1+0.055.t)\\\frac{2900}[1400} = 1+0.055t\\2.071 = 1+0.055t\\2.071-1=0.055t\\1.071 =0.055t$

Dividing both sides by 0.055

$\frac{0.055t}{0.055} = \frac{1.071}{0.055}\\t = 19.47\ years$

Rounding off to nearest tenth

19.5 years

Hence,

It will take 19 years and 6 months for the account value to reach 2900 dollars

Keywords: Interest, simple interest

Learn more about interest at:

#LearnwithBrainly

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3 years ago