1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aalyn [17]
3 years ago
5

Help this is really hars

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
6 0
We have to find the slope of the line that passes through this points:
p1(-2,15), p2(-8,-5)
the slope of a line through two points is calculated like this:
m = (y2 - y1)/(x2 - x1)
where x1,y1,x2,y2 are the coordinates of the two points, so we have:
m = (-5 - 15)/(-8 - (-2))
m = (-20)/(-8 + 2)
m = -20/-6
m = 10/3
that is the line slope
You might be interested in
Easy 10 points answer all 5 questions.
Korolek [52]
Answer for 1 is 22 degrees
7 0
2 years ago
Read 2 more answers
A store owner will order iPads for local schools. The relationship between x, the number of boxes he will order, and y, the numb
wolverine [178]

Answer:

y, ‎y = ‎15x.

Step-by-step explanation:

7 0
2 years ago
Anyone know the answer to this?
kiruha [24]

Answer:

42

Step-by-step explanation:

Angle ABD = Angle CBD + Angle ABC

You know ABD is 70, CBD and ABC are in terms of x

70 = 5x + 13 + 3x + 33

70 - 13 - 33 = 8x

24 = 8x

3 = x

Replacing x in Angle ABC:

3 * 3 + 33 = 42

6 0
3 years ago
there are 98 girls at Ross elementary there are 15 less boys then girls how many boys and girls are at Ross elementary​
Luba_88 [7]
Answer: 98-15= 83 boys
8 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
Other questions:
  • When you dry mushrooms, they lose 72% of their weight. What weight of fresh mushrooms do you need in order to get 12.25 lb of dr
    14·2 answers
  • Step by step explanation
    8·1 answer
  • Write 4.32 in word form
    11·2 answers
  • he;p me please i am losing my points please anyone can you help at least one of you please please please! :(
    9·1 answer
  • On the world map,the scale is 1/5= 636 miles.The distance is 2 and 1/8 inches.How many miles is it?
    5·1 answer
  • Do i divide 65 by 40? ima little confused plz help ASAP
    8·1 answer
  • 2. The angle measures of a triangle are shown in the diagram. <br><br> What is the value of X
    14·1 answer
  • Who knows how to do this I TRULY NEED HELP
    14·1 answer
  • The outline of Sara's family room, including the entry, is shown.
    9·1 answer
  • My songs cost 98 cent and i sell 20 how much is that
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!