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
kicyunya [14]
3 years ago
11

Given are the first three terms of a sequence that is either arithmetic or geometric. If the sequence is​ arithmetic, find and d

. If a sequence is​ geometric, find and r. 7​,9,11
Mathematics
1 answer:
Eduardwww [97]3 years ago
6 0

Answer: The common  difference, d  of the arithmetic progression  is 2

Step-by-step explanation:

In the sequence 7, 9, 11, we can see that an additional term is gotten upon the addition of 2, so it is an arithmetic progression.

given that that first term  a , =7

and the second term  a + d  = 9

The common difference , d  =(a + d)  − a

d = 9 − 7

d= 2

You might be interested in
Simplify your expression 3.7-5.3n-4n+5 can somebody help?
ArbitrLikvidat [17]

Answer:

-9.3n + 8.7

Step-by-step explanation:

5 0
3 years ago
Lindsie is painting on a canvas with dimensions of 3 ft by 4 ft. She wants to make a display model for a gallery that has twice
love history [14]

Answer:

B. 1.4 feet

Step-by-step explanation:

Let, the amount of increase be 'x' ft.

Since, the length and width of the canvas are 4 ft and 3 ft respectively.

Thus, area of the canvas, A_{c} = length × breadth = 4 × 3 = 12 ft²

Since, the area of display model is twice the area of the canvas. We have,

A_{d} = 2 × A_{c}

i.e. A_{d} = 2 × 12

i.e. A_{d} = 24 ft².

As, the length and width of the canvas are increased  by 'x'.

The, length and width of the display model are (x+4) ft and (x+3) ft.

So, we get,

A_{c} = length × breadth = (x+4) × (x+3) = x^{2} +7x+12

Since, A_{d} = 24 ft²

i.e.  x^{2} +7x+12 = 24

i.e.  x^{2} +7x-12=0

Solving the quadratic equation, we get,

i.e. x = -8.4 and x= 1.4

Since, the value of x cannot be negative.

Thus, x = 1.4 feet.

4 0
3 years ago
The lengths of the sides of the triangle are 13cm, 14 cm, and 15 cm. Is the triangle a right triangle?
Helga [31]

Answer:

No, it is not a right triangle.

Step-by-step explanation:

If the triangle was a right triangle, then the Pythagorean Theorem states that a^2 + b^2 = c^2. Let's test it on this triangle:

13^2 + 14^2 = 365, or c^2. If this is a right triangle, c should equal 15.

However, sqrt(365) = 19.1, which is not 15. So, the triangle is not a right triangle.

4 0
3 years ago
What is the slope of the line parallel to the line whose equation is y+4x=7
ryzh [129]

Y+4x =7

Or y = -4x + 7

On comparing with point slope form

y = mx+c

We get m = -4 = slope of given line

As the required line is parallel to given line its slope is equal to -4

4 0
3 years ago
Which of the following would effect an employee net pay
spayn [35]

The following effects that can effect a regular employee's pay is from their effort and time. The effort connects to the time because by doing something that they are hired to be, they get paid from their time and hard work. The time is how long they have been working, the longer they do, the most cash they earn, the less time they do, they get a minimum amount of cash.

6 0
2 years ago
Other questions:
  • Lance lived in Portugal and Brazil for a total of 14 months to learn Portuguese. He learned an average of 130 words per month wh
    14·1 answer
  • Match each description when z = 9 + 3i. 1. Real part of z 2. Imaginary part of z 3. Complex conjugate of z 4. 3i - z 5. z - 9 6.
    11·1 answer
  • Is 64 inches is greater less than are equal to 5 feet
    11·1 answer
  • How would this work? the graph is kinda weird
    7·1 answer
  • Raymond had already run 3 miles on his own, and he expects to run 1 mile during each track practice. How many track practices wo
    15·2 answers
  • If x = 15 units and h = 6 units, then what is the area of the triangle shown above?
    8·1 answer
  • 7(3d + 12) if d=4 I don't know the answer please help.
    8·1 answer
  • EVALUATE THE FOLLOWING   -15 x 6​
    7·1 answer
  • I need help with these problems please and thank you
    11·2 answers
  • The route begins stn 0 00 at a point with coordinates of n 10000. 00 and e 10000. 00, what are the coordinates for the center of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!