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3 years ago

25 is what percent of 37

2 answers:

nataly862011 [7]3 years ago

8 0

$\frac { 25 }{ 37 } =0.\dot { 6 } 7\dot { 5 } \\ \\ \therefore \quad \frac { 25 }{ 37 } \approx \frac { 68 }{ 100 }$

So 25 is approximately 68% of 37.

tiny-mole [99]3 years ago

5 0

<span>25/37= 0.676 which we must then multiply by 100 to arrive at an answer of 67.6 percent.</span>

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(-7x + 6) - (-2x + 9x - 2)

elena-s [515]

Answer:

-14x+4

Step-by-step explanation:

So the first set of paranthese don't really matter so you can rewrite it to this

-7+6-(-2x+9x-2)

Then infront of the ( there is a - which means a -1. Now just do the disbutive property.

-7x+6+2x-9x+2

Now add like terms and you get your finial answer!

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3 years ago

Which of the following would best be solved using factoring the difference of squares? 2² + 3x - 10 = 0 O 3r² + 12x = 8 2³ +52²

IgorC [24]

Given: Different equations

To Determine: Which would be best solved using difference of two squares

Solution

The factorization of a difference of two squares is given below

$a^2-b^2=(a-b)(a+b)$

Let us examine each of the given equation

$\begin{gathered} x^2+3x-10=0 \\ x^2-2x+5x-10=0 \\ x(x-2)+5(x-2)=0 \\ (x-2)(x+5)=0 \end{gathered}$ $\begin{gathered} 3x^2+12x=8 \\ 3x^2+12x-8=0 \end{gathered}$ $\begin{gathered} x^3+5x^2-9x-45=0 \\ x^2(x+5)-9(x+5)=0 \\ (x+5)(x^2-9)=0 \\ x^2-9=x^2-3^2=(x+3)(x-3) \\ Therefore \\ (x+5)(x+3)(x-3)=0 \end{gathered}$ $\begin{gathered} x^2-25=0 \\ x^2-5^2=0 \\ (x+5)(x-5)=0 \end{gathered}$

From the above,

$\begin{gathered} x^3+5x^2-9x-45=0 \\ AND \\ x^2-25=0 \end{gathered}$

The two equation above can be solved by difference of two square, but the equation below is the easiest solved using differnce of two square

x² - 25 = 0

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Sedaia [141]

T = 3.75n over 25 (make it a fraction)

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3 years ago

A cone is 3 inches high and has a base with a surface area of 7 square inches. What is the volume of the cone?

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3 years ago