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3 years ago

Natasha was thinking of a number. Natasha doubles it and adds 6.5 to get an answer of 79.4. Form an equation with

Mathematics

1 answer:

Akimi4 [234]3 years ago

3 0

Answer:

Let the correct number be x.

therefore,

x - 6.5 = 79.4

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Given m||n find the value of X

Zepler [3.9K]

Answer:

es como la raiz cuadrada

Step-by-step explanation:

tienes que dividir 2×22y 5×8

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3 years ago

Find the anwser to y=2x -4. & 4x+y=2

Aleks04 [339]

Y= 2x-4
4x+Y=2

4x+2x-4=2
6x-4=2
+4=+4
6x=6
6/6X = 6/6 X=1
Y=2X-4
2(1)-4
Y=-2

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3 years ago

0.35714285714 as a fraction?

Blababa [14]

As a fraction it is 357/1000.
Simplify that it is 7/20

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3 years ago

A circular cylindrical container, open at the top, and having a capacity of 24pi cubic inches, is to be manufactured. If the cos

otez555 [7]

Answer: radius r = 2 inches

height h = 6 inches

Step-by-step explanation:

Given;

Volume V = 24πin3

Volume of a cylinder is given by

V = πr^2h

h = V/πr^2. ....1

Where, h = height and r = radius of cylinder

For the surface area of the cylinder with open top. we have,

S = 2πrh + πr^2

For the cost of materials used, let k represent the cost of materials used for the body of the cylinder.

Then, for the bottom will be 3k

Total cost will be represented by C, which gives

C = 2πrhk + 3πr^2k. .....2

Substituting eqn 1 to 2, we have;

C = 2πrVk/πr^2 + 3πr^2k

C = 2Vk/r + 3πr^2k

The material cost is minimum at dC/dr = 0

dC/dr = -2Vk/r^2 + 6πrk =0

6πrk = 2Vk/r^2

r^3 = 2V/6π

r = (2×24π/6π)^-3

r = (8)^-3

r = 2

Substituting r = 2 into eqn1

h = 24π/π(2^2)

h = 24/4 = 6

h = 6

5 0

4 years ago

At a pumpkin patch, if Armando guesses the weight of his pumpkin within 0.3 pounds, he gets to take the pumpkin home for free. I

Reil [10]

Answer: last option

Step-by-step explanation:

You know that the weight of his pumpkin 4.9 pounds and that, if he guesses its weight within 0.3 pounds, he will get the pumpkin for free.

Then, to find the minimum weight he can guess in order to get his pumpkin for free, it's necessary to write the expression:

$x-0.3=4.9$

Rewriting it:

$x-4.9=0.3$

To find the maximum weight he can guess in order to get his pumpkin for free, it's necessary to write the expression:

$x+0.3=4.9$

Rewriting it:

$x-4.9=-0.3$

7 0

3 years ago

Read 2 more answers