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2 years ago

Help me with this please

Mathematics

1 answer:

Oksanka [162]2 years ago

5 0

Answer:

Step-by-step explanation:

for x, then, 7 = (x1+5) /2

14 = x1 + 5

9 = x1

for y, then, 4 = (y1+7) /2

8 = y1 + 7

1 = y1

S = (9,1)

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What are two`fractions whose product is -3/5

natali 33 [55]

7/5 - 10/5 = -3/5

I hope this helps.

3 0

3 years ago

a cell phone company plans to market a new smartphone. they have already sold 612 units durning the first week of the campaign.

Vadim26 [7]

The first term is 612.

The common ratio is 1.08 and

The recursive rule is $a_{n} = a^{n-1} \times r$

Step-by-step explanation:

the question to the problem is to write the values of the first term, common ratio, and expression for the recursive rule.

The first term :

In geometric sequence, the first term is given as $a_{1}$ .

⇒ $a_{1} = 612$

Now, the geometric sequence follows as 612, 661, ........

The common ratio (r) :

It is the ratio between two consecutive numbers in the sequence.

Therefore, to determine the common ratio, you just divide the number from the number preceding it in the sequence.

⇒ r = 661 divided by 612

⇒ r = 1.08

To find the recursive rule :

A geometric series is of the form a,ar,ar2,ar3,ar4,ar5........

Here, first term $a_{1} = a$ and other terms are obtained by multiplying by r.

Observe that each term is r times the previous term.
Hence to get nth term we multiply (n−1)th term by r .

The recursive rule is of the form $a_{n} = a^{n-1} \times r$

This is called recursive formula for geometric sequence.

We know that r = 1.08 and $a_{1}$ = 612.

To find the second term $a_{2}$ , use the recursive rule $a_{n} = a^{n-1} \times r$

⇒ $a_{2} = a^{2-1}\times r$

⇒ $a_{2} = a^{1}\times r$

⇒ $a_{2} = 612\times 1.08$

⇒ $a_{2} = 661$

3 0

3 years ago

Tyler drives 50 km north for his first delivery. Then he drives 30 km south for his second delivery. What distance did he cover

marusya05 [52]

80 km. :) very easy math

8 0

2 years ago

Read 2 more answers

Madison reads 24 pages of her book each day. She has read for 9 days & is exactly halfway through reading her book. What is

joja [24]

Answer:

432 pages.

Step-by-step explanation:

We know Madison reads 24pgs/ per day. She reads for nine days, so she reads 24*9 pages, or 216.

We know also that this is halfway through her book, so 2*216= the whole book, so the book has 432 pages

3 0

3 years ago

Read 2 more answers

There are 400 students in a school. Fifty five percent are girls. How many boys are there?

ki77a [65]

1) 55% is girls, then
100-55=45% is boys.

2) 45%=0.45 or 2) 400 ----100%
3)400*0.45= 180 boys x -----45% x=400*45/100=180 boys

Answer is 180 boys.

5 0

3 years ago