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4 years ago

What is 3.78 divided by 4.2?

Mathematics

2 answers:

mote1985 [20]4 years ago

8 0

I used a calculator.
3.78/ 4.2 = 0.9
Answer: 0.9

Anna [14]4 years ago

5 0

The answer it this problem is 0.9

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The measure of the perimeter of a triangle is 24x - 2. It is known that two of the sides of the triangle have measures of 10x +

stealth61 [152]

Answer: 6x-3

Step-by-step explanation: Say that the third side is y. The equation for the perimiter is side 1+ side 2+ side 3= perimeter which if you intput what we have turns out like (10x+2) +(8x-1)+y=24x-2. If you add 10x+2 and 8x-1 you get 18x+1. We can update the previous equation making it (18x+1)+y=24x-2. Since your trying to find y, you isloate it by subtracting (18x+1) from both sides. This leaves us with y=6x-3 as the length of thr missing side.

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3 years ago

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Leviafan [203]

Answer:

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Step-by-step explanation:

3 0

3 years ago

Please help with this. Thanks

lisov135 [29]

Answer:

$\sqrt{106}$

Step-by-step explanation:

Given <u>v</u> = < - 5, 9 > then the magnitude is

| <u>v</u> | = $\sqrt{(-5)^2+9^2}$ = $\sqrt{25+81}$ = $\sqrt{106}$

4 0

4 years ago

The power P of a jet of water is jointly proportional to the cross sectional area A and to the cube ofthe velocity V. (a) Write

anastassius [24]

Answer:

a) $P=kAV^3$

b) 54

Step-by-step explanation:

If one quantity, A, is jointly proportional to other 2 quantities (B & C), we can write proportionality equation as:

$A=k*B*C$

Where

k is the proportionality constant

Now, for this problem, P is jointly proportional to A and CUBE OF V, so we can write:

$P=kAV^3$

Now velocity, V, is triples, which means it becomes 3V

Also, cross sectional area, A, is doubled, which means it becomes 2A

Let's put these into formula and see the difference:

$P=kAV^3\\P=k(2A)(3V)^3\\P=k(2A)(27V^3)\\P=(2*27)kAV^3\\P=54kAV^3$

So, power is multiplied by a factor of 54. Power becomes 54 times if Area is doubled and velocity is tripled ( as seen ).

8 0

3 years ago

(5ab-4a-8)-(9ab-5) its an online geometry class,please help!i provided you 10 pts

Bumek [7]

(5ab-4a-8)-(9ab-5)
Ok just remember that the minus sign before the (9ab-5) is like a minus 1 so it changes the sign inside the bracket...
>>5ab-4a-8-9ab+5
>>-4ab-4a-3
I'm guessing you just have to leave it like that unless there are other parts to the question or whatever but that's that simplified as far as it can be!

7 0

3 years ago