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Zigmanuir [339]
3 years ago
6

Which of the following has the greatest density?

Mathematics
2 answers:
zvonat [6]3 years ago
7 0
Answer:

A

Explanation:
A) 30/3 = 10 g/c
B) 20/5 = 4 g/c
C) 50/10 = 5 g/c
D) 40/5 = 8 g/c
Alinara [238K]3 years ago
5 0

Answer:

The object with the greatest density is A with 10,000 kilograms per cubic meter.

Step-by-step explanation:

A=10000 kilogram/cubic meter

B=4000 kilogram/cubic meter

C=5000 kilogram/cubic meter

D=8000 kilogram/cubic meter

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What is the cost of six filters if eight filters cost $39.92?
Whitepunk [10]
39.92 / 8 = 4.99 per filter

for 6 filters...
6 * 4.99 = 29.94
8 0
2 years ago
A set of equations is given below
Alex_Xolod [135]

Answer:

No solution

Step-by-step explanation:

This is no solution due to the fact that the slope of both of the equation are the same. So they are parallel. If the b value is the same then it is infinitely many solutions. Due to the fact that the b value is not the same they are a set of parallel line. Parallel line do not touch or intersect ever so there for this is a no solution set.

4 0
3 years ago
Silas is starting a lawn mowing company. He determines the start up cost to purchase law mowers is $560. He figures each law wil
Lelechka [254]

Answer:

$1 x $560 =$560

Step-by-step explanation:

3 0
2 years ago
Futhe Mathematics<br><img src="https://tex.z-dn.net/?f=%28Cos%20%7B%7D%5E%7B4%7Dt%20-Sin%20%7B%7D%5E%7B4%7Dt%20%29%20%20%5Cdiv%2
Nastasia [14]

Answer:

cos2t/cos²t

Step-by-step explanation:

Here the given trigonometric expression to us is ,

\longrightarrow \dfrac{cos^4t - sin^4t }{cos^2t }

We can write the numerator as ,

\longrightarrow \dfrac{ (cos^2t)^2-(sin^2t)^2}{cos^2t }

Recall the identity ,

\longrightarrow (a-b)(a+b)=a^2-b^2

Using this we have ,

\longrightarrow \dfrac{(cos^2t + sin^2t)(cos^2t-sin^2t)}{cos^2t}

Again , as we know that ,

\longrightarrow sin^2\phi + cos^2\phi = 1

Therefore we can rewrite it as ,

\longrightarrow \dfrac{1(cos^2t - sin^2t)}{cos^2t}

Again using the first identity mentioned above ,

\longrightarrow \underline{\underline{\dfrac{(cost + sint )(cost - sint)}{cos^2t}}}

Or else we can also write it using ,

\longrightarrow cos2\phi = cos^2\phi - sin^2\phi

Therefore ,

\longrightarrow \underline{\underline{\dfrac{cos2t}{cos^2t}}}

And we are done !

\rule{200}{4}

Additional info :-

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We can rewrite cos 2x as ,

\longrightarrow cos(x + x )

As we know that ,

\longrightarrow cos(y + z )= cosy.cosz -  siny.sinz

So that ,

\longrightarrow cos(x+x) = cos(x).cos(x) - sin(x)sin(x)

On simplifying,

\longrightarrow cos(x+x) = cos^2x - sin^2x

Hence,

\longrightarrow\underline{\underline{cos (2x) = cos^2x - sin^2x }}

\rule{200}{4}

7 0
2 years ago
If the are 5 buses and the quatation amount is R8,100 how much will each person pay ​
Nina [5.8K]

Answer:

R1620

Step-by-step explanation:

1620 ×1=1620

1620×2=3240

1620×3=4860

1620×4=6480

1620×5=8100

5 0
3 years ago
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