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
Inessa [10]
3 years ago
9

The first term of an arithmetic sequence is -5, and the tenth term is 13.

Mathematics
1 answer:
Nitella [24]3 years ago
7 0

Answer:

The common difference is 2

Step-by-step explanation:

The formula for an arithmetic sequence is

an = a1+d(n-1)

a1 = -5

a10 = 13

Substituting n=10 a10=13 and a1 =-5

13 = -5 +d (10-1)

13 = -5 +9d

Add 5 to each side

13+5 = -5+5 +9d

18 = 9d

Divide each side by 9

18/9 = 9d/9

2 =d

You might be interested in
In a survey, 250 adults and children were asked whether they know how to
Dmitry_Shevchenko [17]

Answer:

18%

Step-by-step explanation:

0.12 is 12 percent.

We also have the 0.06 percent which would just be 6 percent

We need to add up those percentages to get 18 percent, for the people surveyed that cannot swim would be 18 percent.  

Our final answer is D.

3 0
2 years ago
A pole that is 3.1m tall casts a shadow that is 1.29m long. At the same time, a nearby building casts a shadow that is 44.75m lo
Mkey [24]
Let b=height of building.   By similar triangles we can say:

b/44.75=3.1/1.29

b=44.75*3.1/1.29

b≈107.54

b≈108 meters  (to the nearest whole meter)
8 0
3 years ago
Read 2 more answers
Which of the following is the proper name for the figure below?<br> 7<br> Y<br> X
VMariaS [17]

Answer:

B

Step-by-step explanation:

When you look at the triangle look at the 3 vertices. Now look at you answers given and choose one that combines all 3 vertices. You don't want your answer to contain a letter/number that represents the length of a side.

So in this case you don't want M or Y in you answer.

Your answer has to be made up of A X andT.

The only answer that uses AXT is answer B.

3 0
3 years ago
Whats a triangle with 3 congruent sides called
dexar [7]

Answer:

equilateral

Step-by-step explanation:

6 0
3 years ago
What is the correct answer i have to type in the yellow boxes?
sertanlavr [38]

Answer:

(-10)²= -10 × -10 = 100

Step-by-step explanation:

When any number is squared whether it is positive or negative, the result will always be positive:

Anything squared means the number multiplied by itself:

So:

(-10)²= -10 × -10 = 100

7 0
2 years ago
Read 2 more answers
Other questions:
  • A 18,000-gallon swimming pool contains 7000 gallons of water when a hose is placed into the pool and begins adding water at a ra
    15·2 answers
  • Follow the steps to solve this equation. 3(2x + 6) – 4x = 2(5x – 2) + 6 1. Use the distributive property: 6x + 18 – 4x = 10x – 4
    11·2 answers
  • What is the result when the number 20 is decreased by 75%?
    11·2 answers
  • What is 2/3 divided by 10
    9·1 answer
  • A ball is thrown into the air with an upward velocity of 32 ft/s. Its height h in feet after t seconds is given by the function
    13·1 answer
  • Hey! please help i’ll give brainliest
    6·1 answer
  • Help!! -4x=36 and pls show the work! thank youu
    11·2 answers
  • Walter chrysler sells car engines. He receives a 11% commission on the first $50,000 in sales and 17% on anything over $50000. H
    13·1 answer
  • Find the slope and the y-intercept of the graph of the linear equation. y=3−12x
    13·1 answer
  • A hot vanilla latte recipe calls for 2 1/2 cups of almond milk and makes 10 servings. How many cups of milk are needed for 15 se
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!