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3 years ago

Find the common difference of the arithmetic sequence 1,-1, -3, ...

1 answer:

4 0

Answer:
-2

Explanation:
The common difference of a sequence is the difference between consecutive terms. To find it, we subtract two consecutive terms.

1, -1, -3

1 and -1 are consecutive terms.
-1-1=-2

Therefore, the common difference is -2.

We can also try the same thing with -3 and -1, since they are also consecutive terms.

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

I hope this helps! Please comment if you have any questions.

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WILL GIVE BRAINLIEST IF CORRECT ANSWER!!!

Rom4ik [11]

Answer : 2√3

Given :-

A equilateral triangle with side length 4.

To Find :-

The value of x in the given figure.

As we know that in a equilateral triangle , perpendicular bisector , angle bisector and median coincide with each other .

So the perpendicular drawn in the figure will bisect the given side .
Therefore the value of each half will be 4/2 = 2 .

Now we may use Pythagoras theorem as ,

→ AB² = BC² + AC²

→ 4² = 2² + x²

→ 16 = 4 + x²

→ x² = 16-4

→ x² = 12

→ x =√12 = √{ 3 * 2²}

→ x = 2√3

Hence the required answer is 2√3 .

I hope this helps.

3 0

2 years ago

Then work backward to find the cost of 2 dvds

Marizza181 [45]

If the cost of one DVD is $42.70, to find the price of two, multiply 42.70 by two. The price of two DVDs is $85.40.

5 0

2 years ago

Scale factor for a model is 15cm. Actual =55.5m. model. =25.25. What is the meter

Rasek [7]

We calculate for the actual length of the thing in the model that measures 25.25 by multiplying this value by the scale factor. That is,
(25.25 cm) x (55.5 m / 15 cm) = 93.425 m
Therefore, the real dimension of the object is approximately 93.43 m.

3 0

3 years ago

Red beads cost $1 an ounce and gold beads cost $3 an ounce. Juanita wants to purchase a 12-ounce mixture of red and gold beads t

beks73 [17]

Answer:

6 ounces of red beads

6 ounces of gold beads

Step-by-step explanation:

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4 0

2 years ago

Read 2 more answers

Raj has 40% of his weekly paycheck automatically dispositive into his savings account this week $160 is dispositive into the acc

ella [17]

Answer:

Raj can look on his pay stub to find the total is $400

Step-by-step explanation:

The relation between the deposit and the total pay is ...

deposit = 0.40 × total pay

total pay = deposit / 0.40 = 160/0.40 = 400

Raj was paid $400 this week.

7 0

3 years ago