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nirvana33 [79]
2 years ago
8

Phineas is the lead research scientist in a lab and responsible for ordering supplies and equipment. The lab is out of petri dis

hes, so Phineas orders 185 of them. The lab uses 12 petri dishes each day.Explain how you would write a two-variable linear equation for this situation.
Mathematics
2 answers:
Ksivusya [100]2 years ago
7 0

 the equation for a two variable equation is ax +by = r

r would be the total number of petri dishes ordered

 so you have ax + by = 185

ax would be the number of dished used times x number of days = 12x

 so you now have 12x + by = 185

 b is unknown so the equation becomes 12x +y = 185

natita [175]2 years ago
4 0
Ax+by=185
12x+by=185
answer is 12x+y=185
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STatiana [176]

Answer:

D. 3x^4 + x^3y - 8x^2y^2 + 9xy^3 - 13y^4

Step-by-step explanation:

9xy^3 - 4y^4 - 10x^2y^2 + x^3y + 3x^4 + 2x^2y^2 - 9y^4 =

= 9xy^3 - 13y^4 - 8x^2y^2 + x^3y + 3x^4

= 3x^4 + x^3y - 8x^2y^2 + 9xy^3 - 13y^4

4 0
1 year ago
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The national electrical code allows a maximum voltage drop of 3% on branch circuits. What is the maximum allowable drop on a 240
Andre45 [30]

Answer:

  7.2 volts

Step-by-step explanation:

3% of 240 is ...

  0.03 × 240 = 3 × 2.40 = 7.20

The maximum allowable drop on a 240-volt circuit is 7.2 volts.

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2 years ago
Which score has a higher relative position, a score of 271.2 on a test for which = 240 and , or a score of 63.6 on a test for wh
Fittoniya [83]

Answer:

The score of 271.2 on a test for which xbar = 240 and s = 24 has a higher relative position than a score of 63.6 on a test for which xbar = 60 and s = 6.

Step-by-step explanation:

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xbar = mean, s = standard deviation.

For the first test, x = 271.2, xbar = 240, s = 24

z = (271.2 - 240)/24 = 1.3

For the second test, x = 63.6, xbar = 60, s = 6

z = (63.6 - 60)/6 = 0.6

The standardized score for the first test is more than double of the second test, hence, the score from the first test has the higher relative position.

Hope this Helps!!!

3 0
1 year ago
Solve this problem if your smart its my lil brothers
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8 0
1 year ago
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Sauron [17]

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Step-by-step explanation:

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1 year ago
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