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3 years ago

Help me !!!!!!!!!!!!!???

Mathematics

2 answers:

Nesterboy [21]3 years ago

7 0

Answer:

what are you supposed to be doing

S_A_V [24]3 years ago

7 0

Is there a question what are you doing

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0.1% of what number is 4?

nikklg [1K]

Let the number be x

Explanation:

0.1 % of x = 4
0.1 /100 × x = 4
1 /1000 × x =4
x = 4 ÷ 1 /1000
x = 4 × 1000
x = 4000

3 0

2 years ago

Read 2 more answers

Find an equation of the sphere that passes through the origin and whose center is (-2, 2, 3). Be sure that your formula is monic

Andrei [34K]

Answer:

$\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

Step-by-step explanation:

Given the center of sphere is: (-2, 2, 3)

Passes through the origin i.e. (0, 0, 0)

To find:

The equation of the sphere ?

Solution:

First of all, let us have a look at the equation of a sphere:

$(x-a)^2+(y-b)^2+(z-c)^2=r^2$

Where ( $x,y,z$ ) are the points on sphere.

$(a, b, c)$ is the center of the sphere and

$r$ is the radius of the sphere.

Radius of the sphere is nothing but the distance between any point on the sphere and the center.

We are given both the points, so we can use distance formula to find the radius of the given sphere:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$

Here,

$x_1 =0 \\y_1 =0 \\z_1 =0 \\x_2 =-2 \\y_2 =2 \\z_2 =3$

So, Radius is:

$r = \sqrt{(-2-0)^2+(2-0)^2+(3-0)^2}\\\Rightarrow r = \sqrt{4+4+9} = \sqrt{17}$

Therefore the equation of the sphere is:

$(x-(-2))^2+(y-2)^2+(z-2)^2=(\sqrt{17})^2\\\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

4 0

3 years ago

Pretty lost not too sure what to do

hram777 [196]

Same dude same sadly

8 0

2 years ago

A company uses 4 pounds of resource 1 to make each unit of X1 and 3 pounds of resource 1 to make each unit of X2. There are only

liraira [26]

Answer:

Step-by-step explanation:

4X1 + 3X2 less than or equal to 150

5 0

3 years ago

Denise is designing the seating arrangement for a concert an outdoor theater. To give everyone a good view, each row must have 6

Soloha48 [4]

Given:
1st term = 11
common difference = 6

f(x) = 11 + 6(x - 1)
f(18) = 11 + 6(18-1)
f(18) = 11 + 6(17)
f(18) = 11 + 102
f(18) = 113 number of seats in row 18.

Row
 1 11 11
2 11 6 17
 3 17 6 23
 4 23 6 29
 5 29 6 35
 6 35 6 41
 7 41 6 47
 8 47 6 53
 9 53 6 59
 10 59 6 65
 11 65 6 71
 12 71 6 77
 13 77 6 83
 14 83 6 89
 15 89 6 95
 16 95 6 101
 17 101 6 107
 18 107 6 113

6 0

4 years ago