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4 years ago

5

The subject of the formula below is y.y=x+p-qRearrange the formula to make X the subject

1 answer:

Hitman42 [59]4 years ago

5 0

Answer:x=y-p+q

Step-by-step explanation:

Y=x+p-q

Make x the subject of formula

X=y-p+q

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Find two positive real numbers whose product is a maximum. the sum is 80

Eduardwww [97]

Let's say the numbers are "a" and "b"

thus $\bf y=ab\qquad 
\begin{cases}
a+b=80\\
b=80-a
\end{cases}\implies y=a(80-a)\implies y=80a-a^2\\\\
-----------------------------\\\\
\cfrac{dy}{da}=80-2a$

set the derivative to 0, and check the critical points, there's only one anyway

and do a first-derivative test, to see if it's a maximum

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Each person in a group of college students was identified by graduating year and asked when he or she preferred taking classes:

swat32

Answer:

<em>0.615</em>

Step-by-step explanation:

The frequency table is attached below.

We have to calculate, the probability that the student preferred morning classes given he or she is a junior.

i.e $P(\text{Morning }|\text{ Junior})$

We know that,

$P(A\ |\ B)=\dfrac{P(A\ \cap\ B)}{P(B)}$

So,

$P(\text{Morning }|\text{ Junior})=\dfrac{P(\text{Morning }\cap \text{ Junior})}{P(\text{Junior})}$

Putting the values from the table,

$\dfrac{P(\text{Morning }\cap \text{ Junior})}{P(\text{Junior})}=\dfrac{\frac{16}{143}}{\frac{26}{143}}=\dfrac{16}{26}=0.615$

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3 years ago

Tricia got a 6% raise on her weekly salary. The raise was $30 per week. What was her original weekly salary in dollars per week?

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Answer: Original salary = $500

Step-by-step explanation: Tricia got a 6% raise on her weekly salary. The

raise was $30 per week.

Let x be the original salary

x times the raise percentage = raise amount

6%= 6/100=0.06, raise amount = 30

Now we solve for x

Divide by 0.06 on both sides

Original salary = $500

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3 years ago

Which TWO numbers round to 3 as the nearest whole number?

AysviL [449]

B and F , wish you the best enjoy!

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3 years ago