3 years ago

Find the average number particles hitting the surface perunit area and per unit time

Mathematics

1 answer:

alexgriva [62]3 years ago

8 0

How do I find the average number of particles hitting the surface poer unit area and per unit time with no information?

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Brandon picked 14 of a pound of cherries. That afternoon, Brandon's brother ate 12 of the cherries. How many pounds of cherries

stellarik [79]

Answer:

Step-by-step explanation:

Brandon picked 14 pounds of cherries but later in the afternoon Brandon's brother ate 12 so you would subtracts

14-12 = 2

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3 years ago

Does anyone know how to do this question ??

Viktor [21]

Y^2-9^2

(y-9)(y+9)

To see if its right:

y*y+y*9-9*y-9*9
y^2+9y-9y-81
y^2-9^2

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3 years ago

--<br> Choose the correct simplification of the expression -5x2(4x – 6x2 – 3).

natali 33 [55]

$\huge \bf༆ Answer ༄$

Let's simply ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 5 {x}^{2} (4x - 6 {x}^{2} - 3)$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:( - 5x {}^{2} \times 4x) - ( - 5 {x}^{2} \times 6 {x}^{2} ) - ( - 5 {x}^{2} \times 3)$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 20 {x}^{3} - ( - 30 {x}^{4} ) - ( - 15 {x}^{2} )$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: - 20 {x}^{3} + 30 {x}^{4} + 15 {x}^{2}$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:30 {x}^{4} - 20 {x}^{3} + 15 {x}^{2}$

5 0

2 years ago

A florist sold 24 red roses and twice as many pink roses on Saturday he sold 36 pink roses and half as many red roses on Sunday

Sophie [7]

Answer:12

Step-by-step explanation:

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3 years ago

Cecilia has $780 in an account earning 5.2% simple interest. How much more interest would her account earn in 6 years with annua

Makovka662 [10]

Answer:

$1057.3

Step-by-step explanation:

First we'll find the Interest no. 1, which is simple interest, assuming the time 1 year:

S.I= PRT/100

S.I= 780*5.2*1/100

S.I=$40.56

Now we'll find interest no.2, which is compound interest, time is 6 years, Principal amount (780) will remain the same as well as the rate thus (putting in the formula of compound interest- annual- $A=P(1+\frac{R}{100} )^t$ ):

$A= 780(1+\frac{5.2}{100})^6$

A= $1057.3

7 0

3 years ago