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3 years ago

Picture attached what steps are needed plz help

Mathematics

1 answer:

aksik [14]3 years ago

5 0

B.) 2p-3.50 he bought 2 shirts so 2p and than a coupon for 3.50 so subtract it from 2p and ur answer is 2p-3.50

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Mr. green has a garden. Of the 40 seeds he planted, 35% were vegetable seeds. How many vegetable seeds did he plant

Lelechka [254]

Answer:

Step-by-step explanation:

35% of 40 is 14

8 0

2 years ago

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I really need help, this is probability and statistics, if anyone else is taking this class, please help, it is a unit test stud

Vikki [24]

Answer:

id like to help but the picture is really blurry so im afraid that i cant. but i know there are others who can!

Step-by-step explanation:

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2 years ago

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A cup of coffee contains about 100 mg of caffeine. Caffeine is metabolized and leaves the body at a continuous rate of about 12%

Mamont248 [21]

Answer:

a. $A = C_{0}(1-x)^t\\x: percentage\ of \ caffeine\ metabolized\\$

b. $\frac{dA}{dt}= -11.25 \frac{mg}{h}$

Step-by-step explanation:

First, we need tot find a general expression for the amount of caffeine remaining in the body after certain time. As the problem states that every hour x percent of caffeine leaves the body, we must substract that percentage from the initial quantity of caffeine, by each hour passing. That expression would be:

$A= C_{0}(1-x)^t\\t: time \ in \ hours\\x: percentage \ of \ caffeine\ metabolized\\$

Then, to find the amount of caffeine metabolized per hour, we need to differentiate the previous equation. Following the differentiation rules we get:

$\frac{dA}{dt} =C_{0}(1-x)^t \ln (1-x)\\\frac{dA}{dt} =100*0.88\ln(0.88)\\\frac{dA}{dt} =-11.25 \frac{mg}{h}$

The rate is negative as it represents the amount of caffeine leaving the body at certain time.

3 0

3 years ago

The graph of a proportional relationship passes through (9, 18) and (1, y). Find y.

spayn [35]

Answer:

Step-by-step explanation:

Because it's a proportional relationship and it goes through the point (9, 18) the equation is y = 2x so when x = 1, y = 2.

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3 years ago

Given that GK is a perpendicular bisector to JH which two triangles are congruent by the HL theorem

Digiron [165]

JGK is congruent to HGK

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3 years ago