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3 years ago

Y = 2x + 3 2y = 4x + 6 The system of equations has _____ solution(s).

1 answer:

6 0

Dividing the 2nd equation by 2 gives y=2x + 3 which is the same as the too
p line. any answer to one of them is obviously an answer to the other so there are infinitely many solutions

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HELP ASAP PLZ!!! Question in picture!

erik [133]

Answer:YOUR ANSWER IS C

Step-by-step explanation:

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3 years ago

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An 18 in long rebar is driven into the ground until it touches an underground pipe. A backsight to a benchmark with an elevation

WARRIOR [948]

Answer:

398.71 ft

Step-by-step explanation:

Length of rebar = 18 inches = 1.5 ft

Elevation = 393.66 ft

Reading of backsight on Benchmark= 7.56 ft

Rod reading = 1.10 ft

<em>First step : determine height of Instrument been used</em>

= elevation + backsight on Benchmark

= 393.66 + 7.56 = 401.22 ft

<em>Elevation of top of rebar </em>

= 401.22 - 1.01 = 400.21 ft

Finally determine the elevation of the top of the pipe

= 400.21 - length of Bar

= 400.21 - 1.5 = 398.71 ft

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3 years ago

Y varies directly with X and has a constant rate of change of 6. When the value of Y is 11, then the value of X could be _____.

Bogdan [553]

Answer: The correct option is (B) less than 2.

Step-by-step explanation: Given that Y varies directly with X and has a constant rate of change of 6.

We are to find the possible value of X when the value of Y is 11.

Since Y varies directly with X, so we can write

$Y\propto X\\\\\Rightarrow Y=kx~~~~~~~~~~~~~~~(i),~~~~~~~~~\textup{[where 'k' is the constant of variation]}$

Since the rate of change is constant and is equal to 6, so we must have

$k=6.$

So, from equation (i), we have

$Y=kX\\\\\Rightarrow Y=6X~~~~~~~~~~~~~~~~~~~~~~(ii)$

Now, when Y = 11, then from equation (ii), we get

$Y=6X\\\\\Rightarrow 11=6X\\\\\Rightarrow X=\dfrac{11}{6}$

Thus, the value of X is less than 2 when Y = 11.

Option (B) is CORRECT.

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3 years ago

Help me solve for A and B!

expeople1 [14]

Here we have one large triangle with two smaller triangles drawn inside. The two smaller triangles are similar.

Thus, a/12 = 12/16, or a/12 = 3/4, or 4a=36, or a = 9.

Find b in the same way: b/20 = 9/12 (and so on).

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3 years ago

What is 2,750 plus 2,750?

jek_recluse [69]

2750plus2750equels5500

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