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VladimirAG [237]
3 years ago
13

Find the mean, median, mode, and range for the following data:

Mathematics
1 answer:
valkas [14]3 years ago
3 0
45 42 42 92 yeeeeeeeeee
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Write a recursive formula for the following arithmetic sequence.<br> 8, 5, 2, −1,
Kamila [148]

Answer:

a_{n} = a_{n-1} - 3

Step-by-step explanation:

A recursive formula allows a term in the sequence to be found from the previous term by adding the common difference to it.

Here d = 5 - 8 = - 3, thus

a_{n} = a_{n-1} - 3 with a₁ = 8 ← recursive formula

8 0
4 years ago
I REALLY NEED HELP!!!PLSSS
kakasveta [241]

Step-by-step explanation:

(a^-7)/a^10 = a^(-7-10) => B

6 0
3 years ago
Using a pair of compasses and a ruler only,construct ∆ABC where
LenKa [72]

1.Drawn a straight line AB=7 cm with the help of ruler.

2.With the help of compass drawn an arc from A and at the point where it cuts AB from that point made another arc drawn an arc cutting the previous arc.

3.From A drawn a straight line joining the arc and extend it to M.

4.With the help of ruler measured 5 cm and mark it as AC.

5.Joined BC and we get the required triangle.

6.From C drawn an arc and make it cut on AC and BC and from the point it cuts AC and BC drawn arc cutting each other and extend a line from point C extend a line to the point point of intersection of two arc.

7.Similarly we do for A and the point where the two line intersect denoted as O.

8.Made a perpendicular from O on AB this perpendicular will be radius and taking O as centre we draw a circle this is our incircle.

9.And AN is our locus of points equidistant from two lines AB and AC.

We need to construct a circle inscribed in triangle that is incircle it can be done by making angle bisector of two sides the point where it intersect will be incentre. The centre of required circle.

The angle bisector is the locus where points are equidistant from two sides.

6 0
3 years ago
In the diagram, △ABC∼△DEF. The area of △ABC is 180 square centimeters. Find the area of △DEF.
Alexeev081 [22]

Answer:

20

Step-by-step explanation:

The first step is to find out the similarity reason of the sides of the triangle, so we just divide the big side by the small side (12/4=3).

Now, for the similarity reason of the areas, we just square that number (3^2=9).

Then we just divide the area of the big triangle by 9, which is 180/9= 20.

4 0
3 years ago
Read 2 more answers
If $x$ and $y$ are positive real numbers for which $(x + y)^2 + (x - y)^2 = 10$ and $(x + y)^4 + (x - y)^4 = 98$, what is the va
slava [35]
(x+y)^2+(x-y)^2=10
\implies 2x^2+2y^2=10
\implies x^2+y^2=5
\implies (x^2+y^2)^2=x^4+2x^2y^2+y^4=25

(x+y)^4+(x-y)^4=98
\implies 2x^4+12x^2y^2+2y^4=98
\implies x^4+6x^2y^2+y^4=49
\implies 25+4x^2y^2=49

4x^2y^2=24
\implies x^2y^2=6
\implies xy=\sqrt6
6 0
4 years ago
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