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4 years ago

42÷0.007how xo i work this problem out

Mathematics

2 answers:

AVprozaik [17]4 years ago

5 0

.0007 / 42 = 7/ 420000

and then you do it normaly

Anna007 [38]4 years ago

5 0

The answer is 6,000

7/1000 and 427/1000
divide 42 by 7/1000
you get 6,000

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Can someone help me please

Vladimir [108]

$a) \: \cos(39°) = \frac{x}{7} \Leftrightarrow x = 7\cos(39°) \approx5.44 \\ b) \: \sin(46°) = \frac{8}{x} \Leftrightarrow x = \frac{8}{\sin(46°)} \approx11.12$

8 0

3 years ago

A classmate walks into class and states that he has an extra ticket to a chamber orchestra concert on Friday night. He asks ever

VladimirAG [237]

Answer:

2.56% chance of being selected

Step-by-step explanation:

Given

$n = 39$ --- you and 38 others

Required

Chance of you being selected

To do this, we simply calculate the probability using:

$Pr(x) = \frac{n(x)}{n}$

Where:

$n(x)= 1$ --- i.e you are just 1 person

So:

$Pr(x) = \frac{1}{39}$

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Express as percentage

$Pr(x) = 2.56\%$

3 0

3 years ago

You can model the population of a certain city between the years 1965 and 1995 by the radical function P(x) = 75,000 ^3sqrt x-19

LuckyWell [14K]

Answer: B. 1975

Step-by-step explanation:

Given: The model of population of a certain city between the years 1965 and 1995 by the radical function

$P(x)=75000\sqrt[3]{x-1940}$

To find the x year at which population is 245,000, put this in equation we get

$245000=75000\sqrt[3]{x-1940}\\\\\Rightarrow\frac{245000}{17000}=\sqrt[3]{x-1940}\\\\\Rightarrow3.266=\sqrt[3]{x-1940}\\\\\Rightarrow\ x-1940=(3.266)^3..........\text{[by taking cube on both sides]}\\\\\Rightarrow\ x-1940=34.8587\\\\\Rightarrow\ x=1940+34.8587\\\\\Rightarrow\ x=1974.8587\approx1975$

Hence, at year 1975 the population of the city is 245,000.

5 0

3 years ago

Read 2 more answers

How do I solve<br> -3x+y=24<br> -2x=+18+5y

ExtremeBDS [4]

Answer:

Let's solve by eliminating x. Since 18 is the lowest common multiple , let's multiply the first equation by 3 and the second by -2.

18x−21y=24

−18x+10y=−2

Add the two equations.

−11y=22

Divide by -11 to isolate y.

y=−2

Substitute y=−2 into either of the 2 equations, I'll just use the second one.

9x+10=1

9x=−9

x=−1

Step-by-step explanation: that is your anwser

3 0

3 years ago

Use the formula for the volume of a cylinder to find the volume of a water tank (in ft with a radius of 15 feet and a height of

alex41 [277]

Answer: See below

Explanation:

Formula: V = pi x r^2 x h

Pi = 22/7
r = 15 ft
h = 35 ft

=> V = 22/7 x 35 x 15^2
=> V = 22 x 5 x 15^2
=> V = 110 x 225
=> V = 24,750 ft^2

6 0

3 years ago

Read 2 more answers