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Natalka [10]
3 years ago
5

PLEASE HELP I dont know WHAT IM DOING! THANK YOU!

Mathematics
2 answers:
Serjik [45]3 years ago
8 0

Answer:

The answer is 10/4

Step-by-step explanation:

In order to find a slope of a line we have to divide the change in y, by the change of x.

Or you could just count, it's faster and easier.

So you start at the point (-2,-9) then you count up 10 points.

Then from here (-2,1), you go over 4 points to the right, getting you to (2,1).

Therefore the slope is 10/4.

I hope this makes sense, have a good day!

jeka57 [31]3 years ago
6 0
I think the answer would be

X=1.5
Y= -10 or -12 or 12

Sorry I'm not sure
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which one of the following statements express a true proportion a.42:7=6:2 b.14:6=28:18 c. 3:5=12:20 d.2:3=3:2
Drupady [299]
C.) 3:5 = 12:20
It is this because you can divide them evenly into each other. 3*4 is 12 and if you do 5*4 it is 20. Boo yeah
3 0
3 years ago
A radioactive substance decreases in the amount of grams by one-third each year. If the starting amount of the
katovenus [111]

Answer:

The sequence is geometric. The recursive formula is a_{n}=2/3a_{n-1}

Step-by-step explanation:

In order to solve this problem, you have to calculate the amount of the substance left after the end of each year to obtain a sequence and then you have to determine if the sequence is arithmetic or geometric.

The substance decreases by one-third each year, therefore:

After 1 year:

1452-\frac{1}{3}(1452)

Using 1452 as a common factor and solving the fraction:

1452(1-\frac{1}{3})=1452(\frac{2}{3})=968

You can notice that in general, after each year the amount of grams is the initial amount of the year multiplied by 2/3

After 2 years:

968(\frac{2}{3})=\frac{1936}{3}

After 3 years:

\frac{1936}{3}(\frac{2}{3})=\frac{3872}{9}

The sequence is:

1452,968,1936/3,3872/9....

In order to determine if the sequence is geometric, you have to calculate the ratio of two consecutive terms and see if the ratio is the same for all two consecutive terms. The ratio is obtained by dividing a term by the previous term.

The sequence is arithmetic if the difference of two consecutive terms is the same for all two consecutive terms.

-Calculating the ratio:

For the first and second terms:

968/1452=2/3

For the second and third terms:

1936/3 ÷ 968 = 2/3

In conclussion, the sequence is geometric because the ratio is common.

The recursive formula of a geometric sequence is given by:

a_{n}=ra_{n-1}

where an is the nth term, r is the common ratio and an-1 is the previous term.

In this case, r=2/3

7 0
3 years ago
A ____________ has no dimension and is represented by a small dot.
monitta

Answer:

Point

Step-by-step explanation:

If you are referring to geometry

7 0
3 years ago
Can someone help me please thank you
icang [17]

Answer:

c and d

Step-by-step explanation:

a slae price cant be one whole so those are the only reasonable options.

3 0
3 years ago
Read 2 more answers
Factor 24a^2b + 18abc
Bumek [7]
24a^2b + 18abc
=6ab(4a + 3c)

Hope this helps! :)
8 0
3 years ago
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