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3 years ago

Factorise P(2m+n)+(q-r)(2m-n)

Mathematics

1 answer:

Ber [7]3 years ago

8 0

Answer:

2Pm+Pn+2qm-qn-2rm+rn

Step-by-step explanation:

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doctors use gallium in scanning some patients for diseases the table shows the amount of gallium in mg remaining in a patients s

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Step-by-step explanation:

no sn as. kojsshsusishheidhsusjjsbsbshsbsjs7ehsjsnkosvsjsishshshsjdjjddyfygyvrcudjdhdudhsjsudhdjs

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3 years ago

A population of bacteria is 8500 on Day 1, 9350 on Day 2, and 10285 on Day 3.

11111nata11111 [884]

Answer:

The population on 30th day will be 134836.

Step-by-step explanation:

This is a case of exponential growth. The general form of exponential function is,

$y=ab^x$

where, a and b are constants.

The data points from the question are $(1,8500),(2,9350),(3,10285)$

Putting the values in the function,

for $x=1, y=8500$

$8500=ab$ ----------1

for $x=2, y=9350$

$9350=ab^2$ ------2

Dividing equation 2 by 1,

$\Rightarrow \dfrac{ab^2}{ab}=\dfrac{9350}{8500}=1.1$

$\Rightarrow b=1.1$

Putting the value of b in equation 1,

$\Rightarrow a=\dfrac{8500}{1.1}=7727.27$

Now the function becomes,

$y=7727.27(1.1)^x$

Putting x=30, we get

$y=7727.27(1.1)^{30}=134836.2\approx 134836$

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3 years ago

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one week a student exercised 2 hours at school and another 2/3 of an hour at home. if 1/6 of the students total exercise came fr

Marianna [84]

2 hours + 40 min = 160 min
160 min / 6 = 26.6666667
Answer: Approx. 27 minutes

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3 years ago

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In the rectangular prism, express each of the following in terms of s, t, and u. Give an explanation for each of your answers.

sergey [27]

Complete Question

The complete question is shown on the first and second uploaded image

Answer:

$\= HK = \= t + \= u$

$\= GL = \= s - \= t$

$\= JH = \= u + \= s$

Step-by-step explanation:

Now looking at the diagram

Following the direction of the unit vectors $\= u , \= s, \= t$

$\= {HK} = \= {KI} + \= KL$

=> $\= HK = \= t + \= u$

And

$\= GL = \= GH + \= GF$ jjj

=> $\= GL = \= s - \= t$

Also

$\= JH = \= JG + \= JI$

=> $\= JH = \= u + \= s$

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