2 years ago

What is the sum of 2x^2-5x-2and 4x^2-6x+8

Mathematics

1 answer:

rjkz [21]2 years ago

6 0

Step-by-step explanation:

this should be correct but im not 100%sure

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solve the following quadratic equation by completing the square. if you need to round to the nearest tenth. x² - 20x = -75

lesantik [10]

The Answer should be either x=15 or x=5 I got both.

5 0

3 years ago

Plzzzzz help I’ll mark brainlest thxxxx

Sloan [31]

an = a1 +d(n-1)

a4 =a1+d(4-1)

-4 = -1+d(3)

add 1 to each side

-3 = 3d

d= -1

an = a1 +d(n-1)

an = -1 +-1 (n-1)

an = -1 -n +1

an = -n

Choice D

6 0

3 years ago

Given the function with f(3) = 127 and f(1) = 95, determine the rate of change over the interval 1 <3 <3

Sonbull [250]

Answer:

When we have a function f(x) = y.

The rate of change between a and b (where a < b) is:

R = (f(b) - f(a))/(b - a)

In this case:

b = 3

a = 1

f(3) = 127

f(1) = 95

R = (127 - 95)/(3 - 1) = 16

The rate of change in that interval is 16.

3 0

3 years ago

Please someone help me!!

ozzi

Answer:

5 feet squared

Step-by-step explanation:

7 0

3 years ago

Simplify 2√2-√3<br> ---------------<br> √2+√3

serious [3.7K]

Step-by-step explanation:

$= \frac{2 \sqrt{2} - \sqrt{3} }{ \sqrt{2} + \sqrt{3} }$

$= \frac{2 \sqrt{2} - \sqrt{3} }{ \sqrt{2} + \sqrt{3} } \times \frac{ \sqrt{2} - \sqrt{3} }{ \sqrt{2} - \sqrt{3} }$

$= \frac{ 2( \sqrt{2} - \sqrt{3} )( \sqrt{2} - \sqrt{3} )}{ { \sqrt{2} }^{2} - { \sqrt{3} }^{2} }$

$= \frac{2(2 - \sqrt{6} - \sqrt{6} - 3) }{2 - 3}$

$= \frac{2( - 1 - 2 \sqrt{6} )}{ - 1}$

$= \frac{ - 2(1 + 2 \sqrt{6} )}{ - 1}$

$= 2(1 + 2 \sqrt{6} )$

$= 2 + 4 \sqrt{6}$

6 0

1 year ago