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3 years ago

Write .0045 into a scientific notation

Mathematics

1 answer:

Anon25 [30]3 years ago

5 0

Answer:

To write 0,0045 in scientific notation, we will have to move the decimal point three point to right, which literally means multiplying by 1000=103 . Hence in scientific notation 0.0045=4.5×10−3 (note that as we have moved decimal three point to right we are multiplying by 10−3

Step-by-step explanation:

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A number is decreased by 8

astra-53 [7]

Answer:

x - 8

Step-by-step explanation:

I hope this helps.

4 0

3 years ago

is planning schedules for 30 students Sixteen students say they want to take French, 16 want to take Spanish, and 11 want to tak

ivann1987 [24]

Answer: There are 7 students who want French only.

Step-by-step explanation:

Since we have given that

Number of students is planning schedules = 30

Number of students who want to take French = 16

Number of students who want to take Spanish = 16

Number of students want to take Latin = 11

Number of students who take both French and latin = 5-3 =2

Number of students who take French and Latin and Spanish as well = 3

Number of students who only want Latin = 5

Number of students who only want spanish = 8

According to venn diagram, we get that

$a+b+g+f=16\\\\c+d+e+g=11\\\\b+e+f+g=16$

So, it becomes,

$c+d+e+g=11\\\\5+2+e+3=11\\\\e=11-(5+2+3)=1$

Similarly,

$b+e+f+g=16\\\\8+1+f+3=16\\\\12+e=16\\\\e=16-12\\\\e=4$

Similarly,

$a+d+g+f=16\\\\a+2+3+4=16\\\\a=16-(2+3+4)\\\\a=16-9\\\\a=7$

Hence, there are 7 students who want French only.

6 0

3 years ago

You have been training for a triathlon. For the first two months, you run for 20 days, bike for 14 days, lift weights for 16 day

Marina CMI [18]

Run for 20, bike for 14, lift weight for 16, and swim for 10....thats a total of (20 + 14 + 16 + 10) = 60

how many degrees would represent swimming...
10/60 * 360 = 1/6 * 360 = 360/6 = 60 degrees <===

7 0

3 years ago

Help me pls pls pls

valina [46]

Answer:

Since the input values are -7/2 and 2. So the answer is C.

Step-by-step explanation:

Given that when x-value is substituted into the function, you get 19. So in order to find the input value (x), you have to make the function equals 19 :

$f(x) = 2 {x}^{2} + 3x + 5$

$let \: f(x) = 19$

$2 {x}^{2} + 3x + 5 = 19$

Next, you have to factorize it :

$2 {x}^{2} + 3x + 5 - 19 = 0$

$2 {x}^{2} + 3x - 14 = 0$

$2 {x}^{2} + 7x - 4x - 14 = 0$

$x(2x + 7) - 2(2x + 7) = 0$

$(x - 2)(2x + 7) = 0$

Lastly, solve it :

$x - 2 = 0$

$x = 2$

$2x + 7 = 0$

$x = - \frac{7}{2}$

4 0

3 years ago

Read 2 more answers

Recall that m(t) = (1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500g sample of phosphorus-32 decays

katrin2010 [14]

The question is incomplete, here is the complete question:

Recall that m(t) = m.(1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500 g sample of phosphorus-32 decays to 356 g over 7 days. Calculate the half life of the sample.

<u>Answer:</u> The half life of the sample of phosphorus-32 is $14.28days^{-1}$