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3 years ago

Which is bigger 3/7 or 2/5

2 answers:

6 0

To compare fractions you need to make their denominators the same and then compare their numerators.

$\frac{3}{7}=\frac{3 \times 5}{7 \times 5}=\frac{15}{35} \\ \\
\frac{2}{5}=\frac{2 \times 7}{5 \times 7}=\frac{14}{35} \\ \\
15 \ \textgreater \ 14 \xrightarrow{so} \frac{15}{35} \ \textgreater \ \frac{14}{35} \xrightarrow{so} \frac{3}{7} \ \textgreater \ \frac{2}{5}$

3/7 is bigger.

pickupchik [31]3 years ago

5 0

Lets first convert these unlike fraction into like fractions....by taking their LCM and making their denominators same ..and then u can compare them .so LCM of 7 and 5 is 35..<span>now we need to make both the fractions multiply with such a number which give the denominator 35..
</span>=>3/5=3/7 X5 =15/35
=>2/5=2/5X7 =14/35
so the fractions are : 15/35 and 14/35
therefore : 15/35 > 14/35
i.e, 3/7>2/5 ..
hence 3/7 is bigger ...

Hope it helps !!!

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Si el largo de un rectángulo mide el doble del ancho que es "a", ¿cuál es su área?

rosijanka [135]

Answer:

El área es 2 veces el cuadrado del ancho del rectángulo.

Step-by-step explanation:

El área de un rectángulo viene dado por:

$A = a*l$

En donde:

a: es el ancho

l: es el largo

Si el largo es el doble del ancho:

$l = 2a$

Entonces el área es:

$A = a*l = a*(2a) = 2a^{2}$

Por lo tanto, el área es 2 veces el cuadrado del ancho del rectángulo.

Espero que te sea de utilidad!

6 0

3 years ago

Sammy counts the number of people in one section of the school auditorium. He counts 18 female students, 16 male students, and 6

Rzqust [24]

Correct Question:

He counts 18 female students, 16 male students, and 6 teachers. There are

720 people in the auditorium. Consider the probability of selecting one person

at random from the auditorium.

Which of these statements are true?

Choose all that apply.

A: The probability of selecting a teacher is 6%.

B : The probability of selecting a student is 85%.

C : The probability of selecting a male student is 32%.

D : The probability of selecting a female student is 45%.

Step-by-step explanation:

Option B and D are correct because

The total number of people in one cross section = 18 + 16 + 6 = 40.

A = The probability of selecting a teacher is = (6/40)x100 = 15 % not equal to 6 %

B = The probability of selecting a male student is = (34/40)x100 = 85%

C = The probability of selecting a male student is = (16/40)x100 = 40 % not equal to 32 %

D : The probability of selecting a female student is = (18/40)x100= 45%

3 0

3 years ago

in 2018 GRE scores were normally distributed with a mean of 303, and standard deviation of 13. Standford University Graduate sch

eduard

Answer:

The minimum score needed to be considered for admission to Stanfords graduate school is 328.48.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 303, \sigma = 13$