2 years ago

21y+7x=56? what is the value of X

Mathematics

1 answer:

PSYCHO15rus [73]2 years ago

4 0

Answer:

x = 8 - 3y

Step-by-step explanation:

$21y+7x=56\\\\21y-21y+7x=56-21y\\\\7x=56-21y\\\\\frac{7x=56-21y}{7}\\\\\boxed{x=8-3y}$

Hope this helps.

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Debbie buys a tree for the holidays. She would like to determine the amount of space it will take up in her living room. The tre

german

Answer:

Volume of Cone =

$= \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3$

Thus, Volume = 16.75 cubic feet

Step-by-step explanation:

Volume of a cone is given by the formula

$V=\frac{1}{3}\pi r^2 h$

Where r is the radius and

h is the height

Given radius r = 2 and

height is 2 times that.

So height is 2*2 = 4

Plugging these into the formula we get:

Volume of Cone =

$= \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3$

Thus, Volume = 16.75 cubic feet

8 0

3 years ago

A wood stove burns 4 same-sized logs in 2 hours. How many logs does the stove burn in 8 hours?

Liono4ka [1.6K]

(4logs/2hours) = (x logs/8 hours)

(4/2) = x/8)

Cross multiplication gets you:

(4)(8) = (2)x
32 = 2x
x = 16

16 logs

8 0

2 years ago

Read 2 more answers

Cuanto es 6x8-=1000000

stira [4]

Answer:

Step-by-step explanation:

8 0

2 years ago

I definitely need help with this difficult math problem. -7x+y^3+7x^3+6x-3y^3-2x^3+3x

Mars2501 [29]

The answer is 2x-2y^3+5x^3

6 0

2 years ago

If the first term f(1) is 22 and the common difference (d) is 14

blondinia [14]

Answer:

22,36,50,64,78,92

Step-by-step explanation:

The common difference is when you take one term and subtract the previous term from it.

For example, 36-22=14

Hope that helps!

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3 years ago