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3 years ago

If k space plus space 9 over 2 equals 3 over 2, what is the value of k?

Mathematics

1 answer:

ankoles [38]3 years ago

3 0

k = - 3

given k + $\frac{9}{2}$ = $\frac{3}{2}$

subtract $\frac{9}{2}$ from both sides of the equation

k = $\frac{3}{2}$ - $\frac{9}{2}$ = - $\frac{6}{2}$ = - 3

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If you can tell me what the missing number is.

Orlov [11]

Answer:

Step-by-step explanation:

So, to start answering this, lets recall the formula for a rectangles volume:

This formula is :

V=h*w*l

Lets plug in what we know, and solve for the missing variable.

We know that height(h) is 7.

We know that width(w) is 9.

We know that volume(V) is 378.

We are missing length(l)

So:

378=7*9*l

To find length(l), we must iscolate it.

To do this, we must get rid of the 7 and 9.

So lets start by dividing 378 by 9:

378/9=7*9/9*l

42=7*l

Now lets do the same thing with the 7 to iscolate l:

42/7=7/7*l

6=l

So our missing length(l) is 6.

Answer:

l = 6

Hope this helps!

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3 years ago

Evaluate the sum of the following finite geometric series. 5+15+45 +135+ . . . + 1215 Sn=1

Nata [24]

Answer:

1820

Step-by-step explanation:

The sum of the first n terms of a geometric series with common ratio r and first term a is:

a(1-r^n)/(1-r). Plugging this in 5(1-3^6)/(1-3)=1820

5 0

3 years ago

What is 3 billion divided by 24 simplified

wariber [46]

Answer: one hundred and twenty five million

6 0

3 years ago

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In the video, the water level was 15 milliliters before adding the chain, and 20 milliliters after adding the chain. When I weig

mr_godi [17]

Answer:

39.7%

Explanation:

1. First find the density of your chain

Density = mass / volume

Volume = displaced water volume

= Volume of Final level of water - initial level of water

= 20 ml - 15 ml = 5 ml

Mass = 66.7 g

Density = 66.7g / 5 ml = 13.34 g/ml

2. Second, write the denisty of the chain as the weighted average of the densities of the other metals:

Mass of gold × density of gold + mass of other metals × density of other metals, all divided by the mass of the chain.

Calling x the amount of gold, then the amount of other metals is 66.7 - x:

$\dfrac{19.3\cdot x+9.7\cdot (66.7-x)}{66.7}=13.34$

$19.3x+635.66-9.7x=889.778$

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Then, there are 26.47 grams of gold in 66.7 grams of chain, which yields a percentage of:

(26.47 / 66.7) × 100 = 39.7%

7 0

3 years ago

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sp2606 [1]

Answer:

14.8

Step-by-step explanation:

By the Pythagorean theorem, ...

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3 years ago

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