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aleksley [76]
3 years ago
8

Help me plzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
jeka57 [31]3 years ago
4 0

Idk the answer tether

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What is the factored form of x^2 - 196 ?
Luba_88 [7]
D. (x-14)(x+14)
a negative and a positive multiplied makes a negative outcome so -14•+14=-196. x•x is = to x^2
8 0
4 years ago
Read 2 more answers
Find the equation for the circle with center (-4,-5) and passing through (4,-2)
Sholpan [36]

Answer:

(x + 4)² + (y + 5)² = 73

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 4, - 5), thus

(x - (- 4))² + (y - (- 5))² = r², that is

(x + 4)² + (y + 5)² = r²

The radius is the distance from the centre to a point on the circle.

Calculate r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 4, - 5) and (x₂, y₂ ) = (4, - 2)

r = \sqrt{(4+4)^2+(-2+5)^2}

  = \sqrt{8^2+3^2}

 = \sqrt{64+9} = \sqrt{73} ⇒ r² = 73, thus

(x + 4)² + (y + 5)² = 73 ← equation of circle

6 0
3 years ago
Read 2 more answers
Marcos drove twice as far as Candice. Together, they drove 66 miles. Which equation can be used to find the number of miles Cand
Nezavi [6.7K]
M = miles Marcos drove
c = miles Candice drove

m = 2c
m + c = 66

Plug m=2c into the second equation :

m + c = 66
(2c) + c = 66
3c = 66

Choice A 
3 0
3 years ago
Read 2 more answers
6
SVETLANKA909090 [29]

Answer:

56.52 units²

explanation:

  • We should know circle's area: πr²
  • Then the semi circle shall have half area, so formula: (1/2)πr²

Steps:

Using the formula:

→ (1/2)πr²

→ (1/2)(3.14)(6)²

→ 56.52 units²

6 0
3 years ago
Read 2 more answers
Which form of a quadratic function is easiest to use when finding the maximum or minimum value of the function?
alexandr402 [8]

Answer:

ax² + bx + c

Step-by-step explanation:

The form of a quadratic equation that is easy to use when finding the maximum or minimum value of the function is ax² + bx + c.

Suppose a quadratic function:

f(x) = 2x² - 8x + 9

Use ( -b/2a ,  f(-b/2a) ).

-b/2a

a = 2

b = -8

-(-8)/2(2)

8/4

= 2

f(2) = 2(2)² - 8(2) + 9

f(2) = 2(4) - 8(2) + 9

f(2) = 8 - 16 + 9

f(2) = 1

The minimum value of this quadratic function is (2, 1).

It represents a minimum value because a > 0.

4 0
3 years ago
Read 2 more answers
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