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3 years ago

-4/9(-7/9) =_______?

Mathematics

1 answer:

Setler79 [48]3 years ago

6 0

Multiply straight across (neg times a neg = a positive)
=28/81

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A triangle has a hypotenuse that is 65 inches, and the length of one of its legs is 25 inches. What is the length, in inches, of

algol [13]

Answer:

okay so the way your going to set this up is backwards because you already know your hypotenuse. 65^2 = 25^2 + b^2. So its 24 feet

Step-by-step explanation:

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2 years ago

Select the two values of x that are roots of this equation 3x^2 + 1 =5x

Zina [86]

Answer:

x = 1.434 and x=0.232

Step-by-step explanation:

To find the root of the equation stated above we need to:

(1) Write the polynomial equation with zero on the right hand side:

$3x^{2} + 1 = 5x$ ⇒ $3x^{2} -5x + 1 = 0$

(2) Divide the whole equation by 3

$3x^{2} -5x + 1 = 0$ ⇒ $x^{2} -\frac{5}{3}x + \frac{1}{3}= 0$

(3) Use the quadratic formula to solve the quadratic equation:

The quadratic formula states that the two solutions for a quadratic equation is given by:

$\frac{-b±\sqrt{b^{2} - 4ac}}{2a}$ (1)

In this case, a = 1, b = $-\frac{5}{3}, c= \frac{1}{3}$

Substituiting a, b and c in equation (1) We get:

$\frac{-\frac{5}{3}±\sqrt{(-\frac{5}{3})^{2} - 4(1)(\frac{1}{3})}}{2(1)}$ (1)

The two solutions are:

x = 1.434 and x=0.232

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3 years ago

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jenyasd209 [6]

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3 years ago

I need help on 4,5,6, and 7.

levacccp [35]

Answer:

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3 years ago

What number is six tenths less than 0.923?

Gennadij [26K]

Answer:

0.323

Step-by-step explanation:

The tenths place is the 1st number in the decimal. In this case, it would be 9. 9-6=3. So you would replace the 9 with a 3.

pls mark brainliest.

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3 years ago