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3 years ago

Im so confused PLEASE HELP ASAP

Mathematics

2 answers:

siniylev [52]3 years ago

8 0

Answer:

adding 2 to each number

Step-by-step explanation:

7 +2 = 9 + 2 = 11

Klio2033 [76]3 years ago

6 0

Add 2 to each output I hope this is helpful

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Write the series using summation notation. Then find the sum of the series.

ivolga24 [154]

Hello, please consider the following.

$\displaystyle 1+2+3+...+12=\sum_{k=1}^{k=12} {k}=\dfrac{12*13}{2}=6*13=78$

For the second we will need to put on the same denominator.

$\displaystyle \dfrac{1}{2}+\dfrac{1}{4}+...+\dfrac{1}{14}=\sum_{k=1}^{k=7} {\dfrac{1}{2k}}\\\\=\dfrac{1}{2}\dfrac{420+210+140+105+84+70+60}{5*7*3*2*2}\\\\=\dfrac{1}{2}\dfrac{1089}{420}\\\\=\dfrac{1089}{840}=1.296429...$

Thank you.

3 0

3 years ago

What’s the volume of the pyramid

ValentinkaMS [17]

Answer:

The volume of the given pyramid is 300 cm³

Step-by-step explanation:

The volume of a pyramid, $V_{pyramid}$ , is given as follows;

$V_{pyramid} = \dfrac{1}{3} \times Base \ area \times Height$

The height of the pyramid = 12 cm

The side length of the square base of the pyramid = 5 cm

The base area of the pyramid polyhedron with square base = 5 cm × 5 cm = 25 cm²

Therefore, by substitution, we have;

$V_{pyramid} = \dfrac{1}{3} \times 25 \ cm^2 \times 12 \ cm = 300 \ cm^3$

The volume of the given pyramid, V = 300 cm³.

5 0

3 years ago

What is 2 5/8 x 2/3. with the work shown

solong [7]

Https://photomath.net/s/P56lb

The link will show you how to solve the problem but if you still don't get it you download the app Photomath and it will give you more detailed steps.

8 0

3 years ago

What is the slope of a line perpendicular to the line y=2x+5 ?

blsea [12.9K]

Answer:

1/2.

Step-by-step explanation:

the slope of a line perpendicular to another is the reciprocal of the original lines slope.

7 0

2 years ago

If M is the set of all perfect squares that are less than 100 and N is the set of all positive numbers that are less than 15. wr

deff fn [24]

The sets of M and N are { 4 , 16 , 25 , 36 , 49 , 64 , 81 } and{ 0, 1 , 2 , 3, 4, 5 , 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15 }

Set is a collection of elements or numbers or objects.

It is represented with the symbol '{}'

We have that;

M is the set of all perfect squares that are less than 100
N is the set of all positive numbers that are less than 15

M = { 4 , 16 , 25 , 36 , 49 , 64 , 81 }

N = { 0, 1 , 2 , 3, 4, 5 , 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15 }

Thus, the sets of M and N are { 4 , 16 , 25 , 36 , 49 , 64 , 81 } and{ 0, 1 , 2 , 3, 4, 5 , 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15 }

Learn more about sets here:

brainly.com/question/2166579

#SPJ1

8 0

1 year ago