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3 years ago

Find 39.2% of 448.Round to the nearest hundredth.

Mathematics

1 answer:

matrenka [14]3 years ago

7 0

Answer:

175.62

Step-by-step explanation:

39.2•448=17561.6

17561.6/100=175.616

=175.62

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Can you help me with this question? :)

Allisa [31]

Answer:

Step-by-step explanation:

2x^2+5x-4=0

x = [-5 ± √(5^2-4(2)(-4))]/[2(2)]

= [-5 ± √57]/4

= -1.25+0.25√57, -1.25-0.25√57

8 0

3 years ago

The radius of a circle is 11.4 find the circumference to the nearest tenth

Sphinxa [80]

Answer:

71.6

Step-by-step explanation:

c= 2(pi)r

c= 2(3.14)(11.4)

c=71.592

c= 71.6

5 0

3 years ago

What is the value of x ? Enter your answer in the box . ° ?

BaLLatris [955]

Answer:

307°

Step-by-step explanation:

The sum of all the angles of a hexagon is equal to 900°.

So,

112+x+120+100+128+133 = 900

593+x = 900

x = 900-593

x = 307°

So, the value of x is equal to 307°.

4 0

3 years ago

What is the roots of f(x)=-x^2-6x-14

Nutka1998 [239]

Answer:

$x=-3\pm i \sqrt{5}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Algebra II

Imaginary roots: √-1 = i

Step-by-step explanation:

Step 1: Define function

f(x) = -x² - 6x - 14

Step 2: Set up

Set equation equal to 0: -x² - 6x - 14 = 0
Factor out -1: -(x² + 6x + 14) = 0
Divide both sides by -1: x² + 6x + 14 = 0

Step 3: Define variables

a = 1

b = 6

c = 14

Step 4: Find roots

Substitute: $x=\frac{-6\pm\sqrt{6^2-4(1)(14)} }{2(1)}$
Exponents: $x=\frac{-6\pm\sqrt{36-4(1)(14)} }{2(1)}$
Multiply: $x=\frac{-6\pm\sqrt{36-56} }{2}$
Subtract: $x=\frac{-6\pm\sqrt{-20} }{2}$
Factor: $x=\frac{-6\pm\sqrt{-1} \sqrt{20} }{2}$
Simplify: $x=\frac{-6\pm2i \sqrt{5} }{2}$
Factor: $x=\frac{2(-3\pm i \sqrt{5} )}{2}$
Divide: $x=-3\pm i \sqrt{5}$

8 0

3 years ago

What is the value of tan(60°)?

alexandr1967 [171]

Answer:

√3 is the answer

Step-by-step explanation:

the value of tan60 is √3

8 0

2 years ago