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
AVprozaik [17]
3 years ago
5

Pls help Being timed

Mathematics
2 answers:
Volgvan3 years ago
8 0

-6-8+12 the answer to this is -2 so b

umka2103 [35]3 years ago
3 0
(-6)-(+8)-(-12)
-6-8+12
-14+12
-2
You might be interested in
Arithmetic sequences et sn} be an arithmetic sequence that starts with an initial index of 0. The initial term is 3 and the comm
navik [9.2K]

Answer:

(a) The value of s_z is (z+1)(3-z).

(b) The next term in the sequence is -2.

Step-by-step explanation:

(a)

It is given that arithmetic sequence that starts with an initial index of 0.

The initial term is 3 and the common difference is -2.

a_0=3

d=-2

We need to find the value of s_z.

s_z=\sum_{n=0}^{n=z}(a+nd)

where, a is initial term and d is common difference.

s_z=\sum_{n=0}^{n=z}(3-2n)

The sum of an arithmetic sequence with  initial index 0 is

s_n=\frac{n+1}{2}[2a+nd]

where, a is initial term and d is common difference.

Substitute n=z, a=3 and d=-2 in the above formula.

s_z=\frac{z+1}{2}[2(3)+z(-2)]

s_z=\frac{z+1}{2}[2(3-z)]

s_z=(z+1)(3-z)

Therefore the value of s_z is (z+1)(3-z).

(b)

The given arithmetic sequence is

7, 4, 1, ...

We need to find the term in the sequence.

In the given arithmetic sequence the first term is

a=7

The common difference of the sequence is

d=a_2-a_1\Rightarrow 4-7=-3

The first term is 7 and common difference is -3.

Add common difference in last given term, i.e., 1, to find the next term of the sequence.

1+(-3)=1-3=-2

Therefore the next term in the sequence is -2.

3 0
3 years ago
Find the length of XY
Pachacha [2.7K]

Since this is a right triangle, you can use the pythagorean theorem, leg^2+leg^2=hypotenuse^2, to find XY. Since we know that 15 and 17 are our legs and that XY is the hypotenuse, we can solve it as such:

15^2+17^2=XY^2\\ 225+289=XY^2\\ 514=XY^2\\ \sqrt{514}=XY

In short, XY is √514, or 22.67 rounded to the hundreths, units long.

7 0
2 years ago
Read 2 more answers
The value of n. 3n = (3^2)8
cupoosta [38]

Answer:

n= 24

because 3*24=72

and  (3^2)8 = 9*8=72

8 0
3 years ago
A number decreased by the total of the number and fourteen
Charra [1.4K]

The answer to this would be x-(x+14)

Here's an explanation:

Let x represent the unknown number. The problem says that x has been decreased by the sum of x and 14. So, to put this in a form of an equation, it would be x-(x+14), since you have to do the addition first before you can subtract the two number since you don't know what x is. This equation is equal to -14 no matter what x is.

4 0
2 years ago
Bret wants to plot a graph to show the prices of different numbers of skateboards. He has to plot the following points:
Rudik [331]
From 0 to 200 at intervals of 50

7 0
2 years ago
Other questions:
  • Kevin started his science test at 2{:}34\text { p.M.}2:34 p.M.2, colon, 34, start text, space, p, point, m, point, end text and
    7·1 answer
  • What is 3x-4=18+5x ?
    9·1 answer
  • Robin earned $4,320 in 9 weeks. How much did he earn working for a full year? (Assume Robin worked 50 weeks during the year.)
    5·2 answers
  • MP.4 Model with Math Cecilia bought 2 sandwiches last week and 4 sandwiches
    10·1 answer
  • The sum of three consecutive integers is 270. Find the integers
    10·2 answers
  • Find the median and mean of the data. Which reflects the best measure of the center?
    13·1 answer
  • If someone could help me with this that would be great!!! TYSM
    8·2 answers
  • What is the radius of polygon JKLMN ?
    15·1 answer
  • What is the measure of the other acute angle? Pls explain how you got your answer
    5·1 answer
  • COME ON PLEASE HELP ME A FRICKING CRYING PLEASE HELP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!