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3 years ago

3y+4y=-49 solve for y

Mathematics

2 answers:

Anna [14]3 years ago

5 0

Answer:

y=-7

Step-by-step explanation:

Move all terms that don't contain to the right side and solve.

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-Dominant- [34]3 years ago

5 0

Answer: The solution for y would be y = -7

Step-by-step explanation:

-Solve:

$3y+4y=-49$

-First, Combine like terms:

$3y+4y=-49$

$7y=-49$

-Then, divide both sides by 7:

$7y= -49$

$\frac{7y}{7} = \frac{-49}{7}$

$y=-7$

So, therefore the result would be y= -7.

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An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 3ft long with a diameter of 2.2 ft . S

Contact [7]

4 minutes 34 seconds will takes to empty the tank, if the starts completely full and oil drained at a rate of 2.5 $ft^{3}$ per minute.

Step-by-step explanation:

The given is,

Tank is shaped like a cylinder that is 3 ft long with a diameter of 2.2 ft.

Oil drained at a rate of 2.5 $ft^{3}$ per minute.

Step:1

Time taken to dry the oil tank is,

T = $\frac{Volume of oil}{Oil drain rate}$ ....................................(1)

Step:2

Volume of the oil is,

$V = \pi r^{2} h$ .................................................(2)

Where, r - Radius of Cylinder

$r = \frac{d}{2}$

$r = \frac{2.2}{2}$

r = 1.1 ft

From eqn (1),

V = $\pi$ × $1.1^{2}$ × 3

= 11.40398 $ft^{3}$

Step:3

From equation (1)

= $\frac{11.40398}{2.5}$

= 4.56

= 4.56 minutes

T = 4 minutes 34 seconds

Result:

Time taken to dry the oil tank is 4 minutes 34 seconds, if a cylinder is 3 ft long with a diameter of 2.2 ft and oil is drained at a rate of 2.5ft^3 per minute.

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2 years ago

Use the expression 5(6 + 4x) to answer the following:

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

If a 10 symbol sequence is sent through the channel,what is the probability that up to 3 symbols are in error out of the 10trans

lina2011 [118]

Answer: 0.171887

Step-by-step explanation:

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P(Sn =X) = nCx p^x (1-p)^(n-1)

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Since there are only 2 values that occur in sequence 0 and 1 ( or S0 and S1).Let the distribution be given by the sequence (0111111111),(1011111111),(11011111111),...(1111111110) for Sn= 1 is the sequence for 1 error.

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3 years ago

2/4 in decimal form?

Furkat [3]

The decimal form of 2/4 is..... 0.5

8 0

3 years ago

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