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3 years ago

Yo can someone help me with this? (Links = report)

Mathematics

1 answer:

Troyanec [42]3 years ago

7 0

Answer:

Step-by-step explanation:

12.6 divided by pi= 4.01

sqaure root of 4 is 2

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How would you solve (4k+5)(k+1)=0?

alukav5142 [94]

$(4k+5)(k+1)=0\iff4k+5=0\ or\ k+1=0\\\\4k=-5\ or\ k=-1\\\\\boxed{k=-\frac{5}{4}\ or\ k=-1}$

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3 years ago

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Is y = 3/2x +5/4 and -2x+8y=-25 a solution

nekit [7.7K]

Answer: x=-35/10

y=-4

Step-by-step explanation:

y = 3/2x +5/4

-2x+8y=-25

--------------------

replace y in second equation with: y = 3/2x +5/4

-2x+8(3/2x+5/4)= -25

-2x+12x+10= -25

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x=-35/10

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3 years ago

What is a three letter word used to show division in a word problem?

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3 years ago

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Solving equations -3x+7=28?

AURORKA [14]

Answer:

x = - 7

Step-by-step explanation:

- 3x + 7 = 28

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3 years ago

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Write the equation of the sphere in standard form. x^2 + y^2 + z^2 + 2x − 4y − 6z = 22

madam [21]

The equation $x^{2} +y^{2} +z^{2} +2x-4y-6z=22$ in standard form looks like $(x+1)^{2} +(y-2)^{2} +(z-3)^{2} =(6)^{2}$ .

Given equation of sphere be $x^{2} +y^{2} +z^{2} +2x-4y-6z=22$ .

We are required to express the given equation in the standard form of the equation of sphere.

Equation is basically relationship between two or more variables that are expressed in equal to form. Equation of two variables look like ax+by=c. It may be linear equation,quadratic equation, cubic equation or many more depending on the powers of variables. The standard form of the equation of sphere looks like $x^{2} +y^{2} +z^{2} =r^{2}$ .