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3 years ago

A is (1,7) and B is (10,3) workout the length AB and give your answer to 3 significant places

Mathematics

1 answer:

Hitman42 [59]3 years ago

5 0

Answer:

9.849

Step-by-step explanation:

easiest way visually it to plot points on a graph and draw a triangle then use pythagoras to work out distance

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Find the factors of 42 show and explain your work and list the factor pairs in a table

ira [324]

Factors of 42 are...
1, 2, 3, 6, 7, 14, 21, and 42.
1 x 42 = 42
2 x 21 = 42
3 x 14 = 42
6 x 7 = 42

Don't know how you want your table.
I'm sure you can do it yourself.

7 0

3 years ago

Read 2 more answers

Find the first term of the arithmetic sequence in which.... a27=-1/2 and the common difference is 2

kogti [31]

Answer:

1) First term = -105/2

2) The first option is the correct answer 9/2[ 2 + 26]

Step-by-step explanation:

It is given that,

The first term of the arithmetic sequence in which.... a27=-1/2

and the common difference is 2

To find the First term

First term of an AP be a and common difference d the nth term can be written as,

an = a + (n-1)d

Here n = 27

d = 2 , a27 = -1/2

a + (26 x 2) = -1/2

a = -105/2

From the figure We get an = 3n - 1

To find first term a1 and ninth term s9

a1 = 3 x 1 - 1 = 2

a9 = 3x 9 - 1 = 26

Sum of nth term of an AP

n/2[first term + Last term]

first term a1 and Last term = 26

Sum of first 9 terms S9

S9 = 9/2[ 2 + 26]

First option is the correct answer

4 0

3 years ago

Read 2 more answers

Help asap show work i will make u brainlest.

Mariulka [41]

Answer: (10) C (11) D (12) B (13) D (14) C (15) A

Step-by-step explanation:

10) 9x - 1 > 9 - x or 7x - 4 ≥ 4 + 9x

+x +x -9x -9x

10x - 1 > 9 -2x - 4 ≥ 4

+1 +1 +4 +4

10x > 10 -2x ≥ 8

÷10 ÷10 ÷ -2 ↓ ÷ -2

x > 1 or x ≤ -4

11) 7 + 4x < 4x - 7 or -x + 6 > x + 6

-4x -4x -x -x

7 < -7 -2x + 6 > 6

FALSE -6 -6

-2x > 0

÷ -2 ↓ ÷ -2

x < 0

12) |x + 1| = 10

x + 1 = 10 or x + 1 = -10

-1 -1 -1 -1

x = 9 or x = -11

x = {9, -11}

13) 3 - 7 | -1 + 2x| = -116

-3 -3

- 7 | -1 + 2x| = -119

÷ -7 ÷ -7

| -1 + 2x| = 17

-1 + 2x = 17 or -1 + 2x = -17

+1 +1 +1 +1

2x = 18 2x = -16

÷2 ÷2 ÷2 ÷2

x = 9 or x = -8

x = {9, -8}

14) 8 - | 2n - 8 | = 0

-8 -8

- | 2n - 8 | = -8

÷ -1 ÷ -1

| 2n - 8 | = 8

2n - 8 = 8 or 2n - 8 = -8

+8 +8 +8 +8

2n = 16 2n = 0

÷2 ÷2 ÷2 ÷2

n = 8 or n = 0

n = {8, 0}

3 0

3 years ago

Mariah swam her leg of the race in 24.98 seconds and Janet swam her leg of the relay race in 25.874 seconds. What was their comb

Svetach [21]

Answer:

D 50. 854 would be the correct answer

4 0

3 years ago

Read 2 more answers

PLEASE HELP ME!! I really need help!!

Art [367]

Answer:

21 ft

Step-by-step explanation:

Tan(32) = x/34

34tan(32)=x

x= 21.245...

x=21

6 0

3 years ago