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3 years ago

The sum of three and a number is 24

Mathematics

2 answers:

Olin [163]3 years ago

7 0

Answer:

Step-by-step explanation:

let the number be 'x' then,

according to the question,

or, 3 + x = 24

or, x = 24 - 3

therefore , x = 21 ans

Whitepunk [10]3 years ago

4 0

Answer:

Step-by-step explanation:

whenever you see these questions, just subtract the first number, 3, from the total number. Doing this, 24 - 3 = 21

The number is 21

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X + 4 + 2x + 5

Anna [14]

Step-by-step explanation:

a)x + 4 + 2x +5

= x + 2x + 4 + 5

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3 years ago

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Find an equation of the sphere with center (2, −10, 3) and radius 5. $$25=(x−2)2+(y−(−10))2+(z−3)2 use an equation to describe i

lana66690 [7]

In the $x,y$ plane, we have $z=0$ everywhere. So in the equation of the sphere, we have

$25=(x-2)^2+(y+10)^2+(-3)^2\implies(x-2)^2+(y+10)^2=16=4^2$

which is a circle centered at (2, -10, 0) of radius 4.

In the $x,z$ plane, we have $y=0$ , which gives

$25=(x-2)^2+10^2+(z-3)^2\implies(x-2)^2+(z-3)^2=-75$

But any squared real quantity is positive, so there is no intersection between the sphere and this plane.

In the $y,z$ plane, $x=0$ , so

$25=(-2)^2+(y+10)^2+(z-3)^2\implies(y+10)^2+(z-3)^2=21=(\sqrt{21})^2$

which is a circle centered at (0, -10, 3) of radius $\sqrt{21}$ .

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4 years ago

Please help 13 points !

ipn [44]

Answer:

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3 years ago

when you multiply a number by itself then multiply that number by another number and it equals 80 what are the 2 numbers?

sasho [114]

4 and 5
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What is an equation of the line that is perpendicular to 3x +y = -5 and passes through the point (3, -7)

Oliga [24]

Answer:

The number passes through the x axis

Step-by-step explanation:

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