3 years ago

50 is decreased to 19. what is the percent of change?

Mathematics

1 answer:

Delicious77 [7]3 years ago

8 0

62% percent change is it

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I don't understand how we do this PLEASE help me!!!

sashaice [31]

28 = (45 + KL)/2

56 = 45+ KL

KL = 56-45

KL = 11

8 0

3 years ago

Find the population statistics for Florida from 1950-2010. Find a linear regression model, quadratic regression model and an exp

k0ka [10]

1950 2,771,305

1960 4,951,560

1970 6,789,443

1980 9,746,324

1990 12,937,926

2000 15,982,378

2010 18,801,310

Sorry I couldn't find models.

4 0

3 years ago

The product of a positive number and 14 more than seven times the number is 105. Find the two numbers. first number =______ and

Nostrana [21]

Let the positive number be $x$

The expression is
$x(14+7x)=105$ ⇒ expanding the bracket gives,
$14x+7 x^{2} =105$ ⇒ rearranging to equate one side to zero
$7x^{2} +14x-105=0$ ⇒ Dividing each term by 7 to simplify
$x^{2} +2x-15$ ⇒ Factorising gives
$(x+5)(x-3)=0$
$x=-5$ and $x=3$

Hence, the first number is -5 and the second number is 3

8 0

4 years ago

Read 2 more answers

Under typical conditions, 1 <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D" id="TexFormula1" title="\frac{1}{2}" alt="\

damaskus [11]

Answer:

2 $\frac{1}{3}$ inches