All categories

3 years ago

1 1/3 - 2 1/5 + 7/10

Mathematics

2 answers:

pantera1 [17]3 years ago

6 0

11/3 – 11/5 + 7/10 = 13/6 or 2 1/6
:)

Contact [7]3 years ago

4 0

Answer:

Step-by-step explanation:

$1\frac{1}{3} - 2\frac{1}{5} +\frac{7}{10}$

$=-\frac{13}{15} +\frac{7}{10}$

$=-\frac{1}{6}$

You might be interested in

Which ratio is different from the other three A.8/20 B.12/30 C.6/10 D.14/35

Alekssandra [29.7K]

The answer is c. 6/10 because it is equivalent to 3/5 when you simplify. Everything else is 2/5.

6 0

3 years ago

Y intercepts of 3x^2-12x+6

Inessa05 [86]

Y=3x^2. -12x+6

If x= 0 then y= 3•0^2 -12•0+6=6
X=0, y=6

y intercept is the place where the curve touches the y-axis and is at point (0, 6)

6 0

3 years ago

A math class has a total of 36 students. The number of females is 10 less than the number of males. How many males and how many

netineya [11]

36=x+(x-10)
46=2x
23 males
13 females

6 0

3 years ago

The sum of three and a number is 24

Whitepunk [10]

Answer:

Step-by-step explanation:

whenever you see these questions, just subtract the first number, 3, from the total number. Doing this, 24 - 3 = 21

The number is 21

4 0

3 years ago

Read 2 more answers

Randomly selected students participated in an experiment to test their ability to determine when one minute (or sixty seconds)

zalisa [80]

Answer: $(57.41,\ 62.19)$

Step-by-step explanation:

Given : Sample size : $n=40$

Sample mean : $\overline{x}=59.8\text{ seconds}$

Standard deviation : $\sigma =9.2\text{ seconds}$

Significance level : $\alpha=1-0.9=0.1$

Critical value : $z_{\alpha/2}=1.645$

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=59.8\pm(1.645)\dfrac{9.2}{\sqrt{40}}\\\\\approx59.8\pm2.39\\\\=(59.8-2.39,\ 59.8+2.39)\\\\=(57.41,\ 62.19)$

Hence, a 90% confidence interval estimate of the population mean of all students = $(57.41,\ 62.19)$

6 0

3 years ago