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Crank
3 years ago
12

How do I completely factor 4x^2-64?

Mathematics
2 answers:
NikAS [45]3 years ago
6 0
This is how you will completely factor your equation: 4(x^2-16)<span />
Salsk061 [2.6K]3 years ago
4 0
4x^2 - 64

= 4(x + 4) (x - 4)


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Alice is building a rectangular fenced-in pen in her backyard for her dog. Alice designs a pen where the length is ten more feet
Dafna11 [192]

Answer:

the width is 3.16 and the length is 22.64

Step-by-step explanation:

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3 years ago
Can your iPhone XR battery be good for 8 years if you take good care?<br> Answer ASAP
blondinia [14]

Answer:

Step-by-step explanation:

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3 years ago
Read 2 more answers
En un triángulo obtusángulo, uno de los ángulos mide 20° mas que el otro. El tercer ángulo, mide el doble que el mayor de los do
Troyanec [42]

Answer:

La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y  el tercer ángulo mide 100°.

Step-by-step explanation:

Siendo "x" el valor de un ángulo del triángulo obtusángulo, sabes que uno de los ángulos, llamado segundo ángulo, mide 20° más que el primero. Este segundo ángulo se representa como x + 20°.

Además, un tercer ángulo mide el doble que el mayor de los dos, que en este caso es el ángulo cuya expresión es x + 20°. Por lo que el doble de este será 2*(x + 20)°, que será la medida del tercer ángulo.

Teniendo en cuenta que la suma de los ángulos interiores de un triángulo es 180°. Entonces, es posible sumar los valores de cada uno de los ángulos e igualarlos a 180°:

x + x + 20° + 2*(x + 20°) = 180°

Resolviendo:

x + x + 20° + 2*x + 2*20° = 180°

x + x + 20° + 2*x + 40° = 180°

4*x + 20° + 40° = 180°

4*x + 60° = 180°

4*x = 180° - 60°

4*x = 120°

x = 120° ÷ 4

x = 30°

Entonces, la medida del primer ángulo es 30°. El segundo ángulo es calculado como x + 20° = 30° + 20° = 50° mientras que  el tercer ángulo es 2*(x + 20°) = 2*(30° + 20°) = 2*(50°) = 100°

<u><em>La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y  el tercer ángulo mide 100°.</em></u>

3 0
3 years ago
A telescope costs $126 with a 30% discount. What was the original price?
Juli2301 [7.4K]

Answer:

$180

Step-by-step explanation:

Since the cost of the telescope with the 30% discount is $126 then $126 is 70% of the original price. Remember 100-30=70. To find the original price set up a proportion with these values:

\frac{126}{x}=\frac{70}{100}

Solve for the original price by cross multiplying numerator with denominator.

x(70) = 126(100)

70x = 12600

x= $180


3 0
4 years ago
If g(x) = -3x + 12, what is the solution set<br> if the domain of gis (-2, 0,2}?
disa [49]

Given:

The function is

g(x)=-3x+12

Consider the given domain of g is {-2,0,2}.

To find:

The solution set  if the domain of g for the given domain.

Solution:

Domain is the set of input values and range is the set of output value.

We have,

g(x)=-3x+12

Domain of g is {-2,0,2}.

For x=-2,

g(-2)=-3(-2)+12

g(-2)=6+12

g(-2)=18

For x=0,

g(0)=-3(0)+12

g(0)=0+12

g(0)=12

For x=2,

g(2)=-3(2)+12

g(2)=-6+12

g(2)=6

Now, the solution set  of the given domain of g is

\{f(-2),f(0),f(2)\}=\{18,12,6\}

Therefore, the solution set is {18,12,6}.

4 0
3 years ago
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