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3 years ago

Please help, this is a proportion

Mathematics

1 answer:

Verdich [7]3 years ago

3 0

2.5/400=×/720 0.00625=x/720 0.00625(720)=x 4.5=x It will take 4.5 hrs

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10ft 19 ft how do you do this

tino4ka555 [31]

If we're talking about a box with dimensions 10 ft, 19 ft and 20 ft, it's probable that the instructions say to calculate the volume. That would be

V = (10 ft)(19 ft)(20 ft) = 3800 cubic feet.

8 0

3 years ago

how to calculate cube root without using prime factorization? and how to calculate ³√60? or something else that has a decimal re

Marat540 [252]

The cube root of 60 is 3.87 approximately.

Step by step solution:

We can calculate the cube root by Halley's method:

The formula is $\sqrt[3]{a} = x ((x^{3} + 2a)/(2x^{3} + a))$

where,

a = number whose cube root is being calculated

x = integer guess of its cube root.

Here a = 60,

Suppose x as 3

[∵ 3³ = 27 and 27 is the nearest perfect cube that is less than 60]

⇒ x = 3

Therefore,

∛60 = 3 (3³ + 2 × 60)/(2 × 3³ + 60)) = 3.87

⇒ ∛60 ≈ 3.87

Therefore, the cube root of 60 is 3.87 approximately.

Here , ∛60 is irrational because it cannot be expressed in the form of p/q where q ≠ 0.

Therefore, the value of the cube root of 60 is an irrational number.

Learn more about cube root :brainly.com/question/27863878

#SPJ1

4 0

2 years ago

!!!! PLEASEEE HELP ME, IDK WHAT TO DO PLEASE !!!!

Helga [31]

Answer:

The first question is A.

The second question is C.

The thid question is B., I think i'm not quit sure sorry

4 0

3 years ago

Can someone help me with 3?

miskamm [114]

Answer:

a or c

Step-by-step explanation:

sana makatulong

sabi mo 3 lang yan tapos na

6 0

3 years ago

For 11 and 12, find... a.) The slope of the line parallel to the line that passes through the given points, and b.) The slope of

Minchanka [31]

(11)

we are given two points

(x1,y1)=(0,3)

(x2,y2)=(8,7)

so, we get

$x_1=0,y_1=3$

$x_2=8,y_2=7$

(a)

we know that slope of parallel lines are always equal

so, we can use formula

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{7-3}{8-0}$

$m=\frac{4}{8}$

$m=\frac{1}{2}$ ............Answer

(b)

we know that slope of perpendicular line is -1/m

so,

$slope=\frac{-1}{m}$

now, we can plug value

$slope=\frac{-1}{\frac{1}{2}}$

$slope=-2$ ...............Answer

(12)

we are given two points

(x1,y1)=(5,-1)

(x2,y2)=(3,1)

so, we get

$x_1=5,y_1=-1$

$x_2=3,y_2=1$

(a)

we know that slope of parallel lines are always equal

so, we can use formula

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{1+1}{3-5}$

$m=\frac{2}{-2}$

$m=-1$ ............Answer

(b)

we know that slope of perpendicular line is -1/m

so,

$slope=\frac{-1}{m}$

now, we can plug value

$slope=\frac{-1}{-1}$

$slope=1$ ...............Answer

7 0

3 years ago