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Sedbober [7]
4 years ago
14

PLEASE HELP!!!!!!!!!!!

Mathematics
1 answer:
olganol [36]4 years ago
8 0
30 percent is 30/100 as a fraction so as a decimal it would be 0.30
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Six times a number is decreased by 20 which is equal to three times the number increased by 4. what is the number?​
loris [4]
Let the number be a
6a - 20 = 3a + 4
Group like terms
6a - 3a = 20 + 4
3a = 24
divide through by 3
a = 8
Therefore the number is 8
8 0
2 years ago
The sum of three consecutive odd integer is 21. What is the greatest integer
Mrac [35]
Try a few:

1+3+5=9 too small
5+7+9= 21 just right

The greatest integer is 9
3 0
3 years ago
Which polynomial could have the following graph?
Elis [28]

 

The graph shows the solutions:

x1 = -3    ⇒  x + 3 = 0

x2 = 1     ⇒  x - 1 = 0

x3 = 5     ⇒  x - 5 = 0

The polynomial follows:   y = (x + 3)(x - 1)(x - 5)

.

6 0
3 years ago
Read 2 more answers
Hi can someone help me with this problem!!
Shkiper50 [21]

Answer:

f(x) | 5 | - 1 | - 3 | - 1 | 5 |

Step-by-step explanation:

So first you'll say "-2" into function

Replace x with negative 2

f(x) =2(-2) ^2 - 3

8 - 3 = 5

Secondly place "- 1" into function

Replace x with negative 1

f(x) = 2(-1)^2 - 3

2 - 3 = - 1

Thirdly place "0" into function

Replace x with 0

f(x) = 2(0)^2-3

0 - 3 = - 3

Then place "1" into function

Replace x with 1

f(x) = 2(1)^2 - 3

2 - 3 = - 1

Lastly place "2" into function

Replace x with 2

f(x) = 2(2)^2 - 3

8 - 3 = 5

{ hope this helps}

6 0
3 years ago
Mariah needs the circumference of a circular pit in her backyard to be 18.9 meters. She uses a rope tied to a wooden stake to tr
lara31 [8.8K]

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but I'm assuming that you want to calculate the radius.

Circumference of a circle = 2πr

where Circumference = 18.9 meters

Radius = Unknown

π = 3.14

We then put the values into the formula which will be:

C = 2πr

18.9 = 2 × 3.14 × r

18.9 = 6.28r

r = 18.9 / 6.28

r = 3

The radius = 3 meters

Assuming you probably want to get the diameter, we multiply the radius by 2. This will be:

= 2 × 3

= 6 meters

4 0
3 years ago
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