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
Marysya12 [62]
3 years ago
13

What’s is the formula for the fill arithmetic sequence? -9,-2,5,12

Mathematics
1 answer:
bija089 [108]3 years ago
4 0

Answer:

a +d = a2

Step-by-step explanation:

-2 - (-9) =

-2+9=7

a + d = a2

You might be interested in
Cos(−θ)=√3/3, sinθ<0
Delicious77 [7]

Answer:

\sin\theta=-\frac{\sqrt{6}}{3}


Step-by-step explanation:

The given trigonometric equation is \cos(-\theta)=\frac{\sqrt{3} }{3}.

We can either use the Pythagorean identity or the right angle triangle  to solve for \sin\theta.

According to the Pythagorean identity,

\cos^2\theta+\sin^2\theta=1


Recall that, the cosine function is an even function, therefore

\cos(-\theta)=\cos(\theta)


\Rightarrow \cos(\theta)=\frac{\sqrt{3} }{3}.

We substitute this value in to the above Pythagorean identity to get;


(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1


\Rightarrow \frac{3}{9}+\sin^2\theta=1


\Rightarrow \sin^2\theta=1-\frac{3}{9}


\Rightarrow \sin^2\theta=\frac{6}{9}


\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}


\Rightarrow \sin\theta=\pm \frac{\sqrt{6}}{3}


But we were given that,

\sin\theta\:, so we choose the negative value.

\Rightarrow \sin\theta=-\frac{\sqrt{6}}{3}


The correct answer is B







7 0
3 years ago
PLEASE HELP! What is the slope of the line that passes through the points below? (Enter your answer as a decimal if necessary.)
lozanna [386]

1

is the right answer.

because rise is 1 and run is 1 = 1/1 = 1

8 0
3 years ago
Simplify the following numerical expressions.
Aleksandr-060686 [28]

Answer:

|7| - 7 = 0

2|-7| =  14

(-7)^2 =  49

-7-|-7|=  -14

-7-1-71= -79

Step-by-step explanation:

3 0
3 years ago
Which expression is equivalent to 3 7/8-6 1/4
Serhud [2]

get a common denominator which is 24

3 7/8 = 3 21/24

6 /4 = 6 6 /24

3 21/24 - 6 6 /24

big number minus small number take sign of larger

6 6/24

- 3 21/24

-------------


5  30/24

3  21/24

--------------

2  9/24


2 3/8

the sign of the larger is negative

-2 3/8


7 0
3 years ago
(x2−1)(x+1)≥0. pls help me​
docker41 [41]

Step-by-step explanation:

(x²-1)(x+1)≥0

As it has two multiples,

Therefore,

Either,

x²-1≥0

x²≥0+1

x²≥1

x≤√1

x≤1

Or,

x+1≥0

x≥-1

7 0
3 years ago
Other questions:
  • What is the transformation?
    10·1 answer
  • 3. Two lines or equations are described in each part. Decide whether each system has one solution, no solution, or infinitely ma
    9·2 answers
  • A shoe store sells a specific pair of shoes in 3 colors, 4 designs, and 8 sizes. how many different shoes are available?
    10·1 answer
  • Will mark brainliest and 10 points
    13·2 answers
  • ??????????????????.?..
    12·1 answer
  • Can someone Answer this please?
    13·1 answer
  • Brad had a small gathering at a local steakhouse. The steakhouse offers three dinner platters which vary by size and price. They
    13·1 answer
  • Write the slope-intercept form of the line that passes through the point (-3,-1) and
    9·1 answer
  • Miguel read 1 page on Friday, 3 pages on Saturday, 9 pages on Sunday, and 27 pages on Monday. If this pattern continues, how man
    8·1 answer
  • During Raul’s exercise program, he recorded how much weight he lost or gained each week. After 5 weeks, Raul had collected the d
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!