-6 - (-8) + 6 = What is the value?

Mathematics

1 answer:

qaws [65]3 years ago

8 0

Answer:

The answer is 8

Step-by-step explanation:

use order of operations.

*remember that there is an understood -1 in -(-8). this can also be written as -1(-8)*

$-6-(-8)+6\\-6+8+6\\2+6\\8$

hope this helps!

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The distribution of the number of graduate students over the past 13 years in the math department was:1 69 2 445 3 347 4 0269 1.

gtnhenbr [62]

Answer:

16 and 73

Step-by-step explanation:

The question is missing some data. The distribution of the number of students is represented on the following stem-and-leaf plot:

$\begin{array}{cc}1&69\\2&445\\3&347\\4&0269\\5&\\6&\\7&3\\8&\\9&\end{array}$

The numbers in the first column represent the tens and the numbers on the second column represent the units. The number of students over the past 13 years were:

16, 19, 24, 24, 25, 33, 34, 37, 40, 42, 46, 49, 73.

Therefore, the smallest and largest number of students were 16 and 73.

3 0

4 years ago

Please help!

coldgirl [10]

Answer:

Question 1 )

given ,

height of cylinder = 9 cm

diameter of cylinder = 10 cm

$\dashrightarrow \: radius = \frac{10}{5} \: cm \\$

now ,

$Volume \: of \: cylinder = \pi \: r {}^{2} h \\ \\ substitutng \: the \: values \: of \: h \: and \: r \: \\ \\ \dashrightarrow \: \pi \: \times (\frac{10}{2} ) {}^{2} \times 9 \\ \\ \dashrightarrow \: \pi \: \times 25 \times 9 \\ \\ \dashrightarrow \: 225\pi \: cm {}^{3}$

therefore ,

option (C) is correct.

______________________________________

Question - 2 )

dimensions of the rectangular prism are 2 × 3 × 4

$Lateral \: surface \: area = 2h(l + b) \\ \\ \dashrightarrow \: 2 \times 3(4 + 2) \\ \\ \dashrightarrow \: 6(6) \\ \\ \dashrightarrow \: 36 \: cm {}^{2}$