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Leya [2.2K]
3 years ago
7

BRAINLIEST + POINTSSSS Can someone explain me this step by step? Pleaseeeee

Mathematics
1 answer:
kondaur [170]3 years ago
3 0

-25 15/19 + 9/1

get a common denominator of 19

they multiplied 9/1 * 19/19 = 171/19

-25 15/19 + 171/19 =

change the mixed number to an improper fraction

(19* 25 +15)/19 = 490/19

-490/19 + 171/19 =

add together

-319/19

now convert the improper fraction back to a mixed number

19* 16 =304  319-304=15

-319/19 =-16 15/19

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faltersainse [42]

Answer:

11.1 units

Step-by-step explanation:

We solve for this using the formula when using coordinates (x1 , y1) and (x2, y2)

= √(x2 - x1)² + (y2 - y1)²

A(5,2), B(5,4), and C(1,1).

For AB = √(x2 - x1)² + (y2 - y1)²

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= √(5 - 5)² +(4 - 2)²

= √ 0² + 2²

= √4

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For BC = √(x2 - x1)² + (y2 - y1)²

= B(5,4), C(1,1)

= √(1 - 5)² +(1 - 4)²

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For AC = √(x2 - x1)² + (y2 - y1)²

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= 4.1231056256 units

The Formula for the Perimeter of Triangle = Side AB + Side BC + Side AC

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Approximately the Perimeter of a Triangle to the nearest tenth = 11.1units

4 0
3 years ago
Solve for x.
olga nikolaevna [1]

Answer:

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Step-by-step explanation:

To rid the denominators, multiply both sides by (x-3)(x+1).

We get:

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Simplifying, we have:

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x^2+4x-45=0,\\(x-5)(x+9)=0,\\x=5,x=-9

Therefore, the solution with the greatest value is x=\boxed{5}

8 0
3 years ago
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kolezko [41]

Answer:

48 cupcakes were put on the plates.

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