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2 years ago

PLEASE HELP ME

Mathematics

1 answer:

aliina [53]2 years ago

4 0

Answer: i think that it is 479.36

Step-by-step explanation:

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Simplify the following expression by combining like terms and factoring. 2(x-6)+4(2x+1)+3

Shkiper50 [21]

Answer:

5(2x - 1)

Step-by-step explanation:

Given

2(x - 6) + 4(2x + 1) + 3 ← distribute both parenthesis

= 2x - 12 + 8x + 4 + 3 ← collect like terms

= (2x + 8x) + (- 12 + 4 + 3)

= 10x + (- 5)

= 10x - 5 ← factor out 5 from each term

= 5(2x - 1) ← in factored form

4 0

2 years ago

Consider f and c below. f(x, y, z) = (y2z + 2xz2)i + 2xyzj + (xy2 + 2x2z)k,

qaws [65]

$\dfrac{\partial f}{\partial x}=y^2z+2xz^2$
$f(x,y,z)=xy^2z+x^2z^2+g(y,z)$

$\dfrac{\partial f}{\partial y}=2xyz+\dfrac{\partial g}{\partial y}=2xyz$
$\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)$

$\dfrac{\partial f}{\partial z}=xy^2+2x^2z+\dfrac{\mathrm dh}{\mathrm dz}=xy^2+2x^2z$
$\dfrac{\mathrm dh}{\mathrm dz}=0\implies h(z)=0$

$\implies f(x,y,z)=xy^2z+x^2z^2+C$

8 0

2 years ago

Find the least number by which 243 must be divided to make it a perfect<br> square.

yaroslaw [1]

Answer:

Step-by-step explanation:

Well I hate to break the news but 243 is not a perfect square. I'll work you through it, 243 is not a perfect square because it is not an even number. an even number must end in (0,2,4,6,8)
Step one. Find the square root. the square root of 243 is <em>15.588. </em>
Step two Is it a perfect square. No 243 just cant be a perfect square.
Hope this helped :)

4 0

2 years ago

Find the roots of y= -3^2 - 5x +1

Reil [10]

Answer:

The right answer is the second

Step-by-step explanation:

D=b^2-4ac

D=25+12

D=37

7 0

2 years ago

Eff traveled at an average speed of 65 miles per hour for 2.5 hours and then traveled at an average speed of 70 miles per hour f

AleksandrR [38]

Answer:

267.5 miles

Step-by-step explanation

65×2.5=162.5

70×1.5=105

162.5+105=267.5

3 0

2 years ago