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andreyandreev [35.5K]
2 years ago
7

ASAP PLSSS ALL MY POINTS Use sigma notation to represent the sum of the first seven terms of the following sequence: 4, 10, 16,

…
the summation from n equals 1 to 7 of negative 4 plus 6 times n
the summation from n equals 1 to 7 of 4 plus 6 times n
the summation from n equals 1 to 7 of 2 plus 6 times n
the summation from n equals 1 to 7 of negative 2 plus 6 times n
Mathematics
2 answers:
natita [175]2 years ago
5 0

Answer:

i really need help on this one too

Step-by-step explanation:

.

Galina-37 [17]2 years ago
4 0

Answer:

Step-by-step explanation:

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Solve. 3 + x > -9 A) x > 3 B) x > -6 C) x > -3 D) x > -12
IRISSAK [1]

so did you get what I solved the answer is D ok

5 0
3 years ago
3(3x-14)+x=15-(-9x-5)
JulsSmile [24]
The answer is x equals 62
6 0
3 years ago
Help please!! What is the distance between these points? (-7, 6) and (3, 6)
Licemer1 [7]

Answer:

10

Step-by-step explanation:

sqrt root (x2-x1)^2 + (y2-y1)^2

4 0
3 years ago
I need help! Can u help me?
liubo4ka [24]

From clue 3, we know that the three numbers average to 15. This means we add up the three numbers x,y and z and divide by 3 to get 15. So one equation is (x+y+z)/3 = 15 which turns into x+y+z = 45 after multiplying both sides by 3.

Let's say that x < y < z. In other words x is the smallest number, y is the middle and z is the largest. Based on clue 2, this would tell us that z = 8*x (since largest is 8 times the smallest). We can replace the 'z' in the equation x+y+z = 45 with 8x like so

x+y+z = 45

x+y+8x = 45 ... replace z with 8x

9x+y = 45

Now onto clue #1. The smallest number x is a prime number and it is 1/6 times the size of the middle number y. Put another way, the middle number y is 6 times larger than the smallest number. We have this equation y = 6*x

9x+y = 45

9x+6x = 45 ... replace ywith 6x

15x = 45

x = 45/15

x = 3 which is a prime number

Now that we know x = 3, we can use it to find y

y = 6*x = 6*3 = 18

and then use x = 3 to find z

z = 8*x = 8*3 = 24

Therefore the three mystery numbers are 3, 18, and 24. Note how these three values add to 3+18+24 = 45 which you then divide over 3 to get 45/3 = 15. So the average of the values 3, 18, 24 is the number 15. This helps confirm the answer.

4 0
3 years ago
Help me please and thank you :)
____ [38]

Answer:

 A. 74 cm

Step-by-step explanation:

First, we break the rhombus down into similar shapes,

The area of 2 triangles = The area of a square

So we take the triangle from the left and combine it with the triangle on the right, it should make a rectangle, Then calculate the area of the rectangle,

10 multiplied by 5 =50

Thats the area of rectangle 1

Rectangle 2

3 multiplied by 6 = 18

Triangle

4 times 3 divided by 2 = 6

Thus

6 + 18 + 50  = 74

PLEASE GIVE BRAINLIEST AND 5 STARS.

5 0
3 years ago
Read 2 more answers
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