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lorasvet [3.4K]
3 years ago
7

Hãy chỉ cho tôi học thực hiện phép tính lớp 9

Mathematics
1 answer:
butalik [34]3 years ago
4 0

Answer:

thật ngu ngốc

Stethật ngu ngốcp-by-step explanation

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HELP !!
cricket20 [7]

Answer:

24°

Step-by-step explanation:

360/15 = 24

7 0
3 years ago
If ph term of A.P. is q and qth term is p, then (p+q) term is??​
kherson [118]

If the pth term of an arithmetic progression is q and qth term is p then the (p+q) th term is 0.

Given that the p th term of an A.P is q aand q th term is p.

We are required to find the (p+q) th term of that A.P.

Arithmetic progression is a sequence in which all the terms have common difference between them.

N th term of an A.P.=a+(n-1)d

p th term=a+(p-1)d

q=a+(p-1)d-------1

q th term=a+(q-1)d

p=a+(q-1)d---------2

Subtract equation 2 by 1.

q-p==a+(p-1)d-a-(q-1)d

q-p=pd-qd-d+d

q-p=d(p-q)

d=(p-q)/(q-p)

d=-(p-q)/(p-q)

d=-1

Put the value of d in 1.

q=a+(p-1)(-1)

q=a-p+1

a=q+p-1

(p+q) th term=a+(n-1)d

=q+p-1+(p+q-1)(-1)

=q+p-1-p-q+1

=0

Hence if the pth term of an A.P is q and qth term is p then the (p+q) th term is 0.

Learn more about arithmetic progression at brainly.com/question/6561461

#SPJ1

8 0
2 years ago
An elevator can hold 2,800 pounds or less. Write and solve an inequality that describes how much more weight the elevator can ho
11111nata11111 [884]
Hope this helps

don't forget your let statement those are im important
it esplains what the variable represents

4 0
3 years ago
You bought an investment for $1000 and 5 years later sold that investment for $1700. Taking into account compounding, what was y
igor_vitrenko [27]

Answer:

11.196%

Step-by-step explanation:

Given:

Buying cost of the investment or the principle amount = $1000

Time, n = 5 years

Selling cost of investment or amount received = $1700

Now,

the formula for compound interest is given as:

\textup{Amount}=\textup{Principle}(1+r)^n

here, r is the rate of interest

on substituting the respective values, we get

\textup{1700}=\textup{1000}(1+r)^5

or

(1 + r)⁵ = 1.7

or

1 + r = 1.11196

or

r = 0.11196

or

r = 0.11196 × 100% = 11.196%

8 0
3 years ago
The mean life of a particular brand of light bulb is 1200 hours. if you know that at about 95% of this brand of bulbs will last
Snowcat [4.5K]
<span>204
   First, lookup a standard normal table and see what the z-score is for 0.025 (one half of 100% - 95%) to allow for equal sized tails. You should find that the z-score is 1.96. That means that 95% of the time, the value should be within 1.96 standard deviations of the mean. Now let's calculate the standard deviation. 800 is 800 - 1200 = -400 to the left of the mean of 1200. 1600 is 1600 - 1200 = 400 to the right of the mean of 1200. So we are an equal distance of 400 on both sides of the mean. And we know from the z-score of 1.96, that we're 1.96 standard deviations from the mean. So a little division will give us the standard deviation. Which is: 400 / 1.96 = 204.0816327
   So the standard deviation of the light bulbs is 204</span>
4 0
3 years ago
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