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dsp73
3 years ago
7

The ratio of two number is 7 to 3 and their sum is 50 find the two number​

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
4 0

Answer:

35:15

Step-by-step explanation:

7:3=10 (7+3)

14:6=20 (14+6)

21:9=30 (21+9)

28:12=40 (28+12)

35:15=50 (35+15)

There is a more mathematical way to solve this but it isn't coming to mind rn so

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Enter the quadratic function in vertex form in the box. f(x)= x^2+6x+13
Scilla [17]
Its (x+3)^2 + 4 after conversion to vertex form
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3 years ago
The sum of the interior angles of a polygon is 2700 degrees. Calculate the number of sides.
Fiesta28 [93]

Answer:

17 sides

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here sum = 2700° , then

180°(n - 2) = 2700° ( divide both sides by 180° )

n - 2 = 15 ( add 2 to both sides )

n = 17

The polygon has 17 sides

6 0
3 years ago
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98. What is the sum of the first 27 terms in the arithmetic series 25 +19+13 + ...?​
jeka57 [31]

Answer:

sum of the first 27 terms = -1431

Step-by-step explanation:

<h3>arithmetic series sum of the first n terms formula:</h3>

s_{n}  =  \frac{n}{2}  (2a + (n - 1)d)

n = 27 terms

first term, a = 25

common difference, d = 19 - 25 = -6

substitute the values into the formula

s_{27} =  \frac{27}{2} (2(25) + (27 - 1)( - 6))

s_{27} = 13.5(50 + 26( - 6))

s_{27} = 13.5(50 - 156)

s_{27} = 13.5( - 106)

s_{27}  =  - 1431

4 0
3 years ago
Solve the equation.<br> 7z2 = 112
stellarik [79]

Answer:

4

Step-by-step explanation:

7z^2=112

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Take the square root of both sides

x=4

6 0
3 years ago
Help show work thanks there is a example
Dafna11 [192]
First one: 7/15
Second one : 5/12
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3 years ago
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