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bulgar [2K]
2 years ago
10

22(w+2)=77ireadyplease help

Mathematics
1 answer:
ahrayia [7]2 years ago
5 0

Answer:

w = 1.5

Step-by-step explanation:

22(w + 2) = 77

22w + 44 = 77

22w = 77 - 44

22w = 33

22w/22 = 33/22

w = 1.5

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a chord of 12cm long of 8cm is away from the of the circle what is the lenght of the chord which is 6cm away from the centre
lana66690 [7]

Answer:

The length of the chord is 16 cm

Step-by-step explanation:

Mathematically, a line from the center of the circle to a chord divides the chord into 2 equal portions

From the first part of the question, we can get the radius of the circle

The radius form the hypotenuse, the two-portions of the chord (12/2 = 6 cm) and the distance from the center to the chord forms the other side of the triangle

Thus, by Pythagoras’ theorem; the square of the hypotenuse equals the sum of the squares of the two other sides

Thus,

r^2 = 8^2 + 6^2

r^2= 64 + 36

r^2 = 100

r = 10 cm

Now, we want to get a chord length which is 6 cm away from the circle center

let the half-portion that forms the right triangle be c

Using Pythagoras’ theorem;

10^2 = 6^2 + c^2

c^2 = 100-36

c^2 = 64

c = 8

The full

length of the chord is 2 * 8 = 16 cm

5 0
3 years ago
Solve the equations 4× + 4 = 20. Write the problem on the sketch pad then solve the problem algebraically. I need shown work.
tensa zangetsu [6.8K]

Answer:

x = 4

Step-by-step explanation:

I don't know what you mean by sketch pad but here is the working out

4x + 4 = 20

-4            -4

4x = 16

÷4           ÷4

x = 4

Hope this helps :)

4 0
3 years ago
Negative three eighth minus one tenth A. 19/40 B. -19/40 c.-3/8 D. 2/9
djverab [1.8K]
B. -19/40 is the answer.
7 0
3 years ago
Read 2 more answers
FI have no points left please answer, FLIP THE IMAGE OVER PLS
Nezavi [6.7K]

Answer:

Step-by-step explanation:

b.  1000 messages: 30 dollars

1,725 messages: 51.75

c. 2,000

2,500

600

b. 37.5

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8 0
3 years ago
I need help with both of these
jeka57 [31]

Answer:

  1. 13x² - 19x + 23
  2. -16x +17

Step-by-step explanation:

1 . (4x² - 9x + 16) + (7 + 9x² - 10x)

4x² - 9x + 16 + 7 + 9x² - 10x

13x² - 19x + 23

2 . (-2x + 6) - (14x - 11)

-2x + 6 - 14x + 11

-16x +17

8 0
3 years ago
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