NEED HELP NOW 100 POINTS WILL MARK BRAINLIEST ANSWER!!!! 2 photos below PLZ ANSWER BOTH CORRECTLY

Mathematics

2 answers:

slega [8]3 years ago

7 0

The first answer is C.
The second answer is A.

Shkiper50 [21]3 years ago

4 0

The first one is c
the second one is b

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5. answer please and thank u

Murljashka [212]

Answer:

x^3 - 2x + 4

Step-by-step explanation:

4x^2 - 2x + 6x - 10 + desiredsidelength = x^3 + 4x^2 + 2x - 6.

desiredsidelength = x^3 - 2x + 4

5 0

2 years ago

What shape is a rectangle but is not a square

beks73 [17]

Answer:

A quadrilateral is a rectangle

3 0

3 years ago

All 4 questions please

scZoUnD [109]

Answer:

π = S/2πrh
v = √2E/m
b = (-7a+c)/2
x =3y-1

Step-by-step explanation:

$S = 2\pi rh\\Divide\:both\sides\:of\:the\:equation\:by\:2rh\\\\\frac{S}{2rh} = \frac{2 \pi rh}{2 rh} \\\\\pi = \frac{S}{2rh}$

$E = \frac{1}{2} mv^2\\\\E = \frac{mv^2}{2} \\\\Cross\:multiply\\\\2E =mv^2\\Divide\:both\:sides\:of\:the\:equation\:by\:m\\\frac{2E}{m} = \frac{mv^2}{m} \\\\\frac{2E}{m} =v^2\\Square\:root\:both\:sides\:of\:the\:equation\\\sqrt{\frac{2E}{m} } = \sqrt{v^2} \\\\\sqrt{\frac{2E}{m} } =v\\\\v =\sqrt{\frac{2E}{m} }$