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
Ahat [919]
3 years ago
15

The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference. A.) 2 B.) 1.8 C.) 8/9

Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

A

d = 2

Step-by-step explanation:

<em><u>Formula</u></em>

l = a + (n - 1)d

<em><u>Givens</u></em>

n = 10

a = - 5

l = 13

<em><u>Solution</u></em>

13 = - 5 + (10 - 1)d       Substitute

13+5 = -5+5 + 9d       Add 5 to both sides

18 = 9d                      Divide by 9

18/9 = 9/d

d = 2

You might be interested in
A cube has volume 1200 cubic inches. Write the edge length of the cube as a power.
frozen [14]
The volume of a cube is an edge length cubed, so an edge length would be the volume to the 1/3 power. Therefore, the edge length of this 1200 cm³ cube can be written as 1200^{ \frac{1}{3} } cm. This also equals 2∛150 cm and is approximately 10.627 cm.
3 0
3 years ago
Different size containers. Tanner used for storing dry goods. The largest container held 12 /3/4 cups of dry goods. 2/3 of the a
Darya [45]

Answer:

29 3/4 cups

Step-by-step explanation:

total amount of tanner in the 3 containers = sum of tanners in each container

total cups in containers b and c = 2/3 x 12 3/4

2/3 x 51/4 = 17/2 cups or 8 1/2 cups

total capacity = 8 1/2 + 8 1/2 + 12 3/4 = 17 + 12 3/4 = 29 3/4

7 0
3 years ago
URGENTTT!!! NEED HELP ASAP!!! (WILL MARK BRAINLIEST FOR CORRECT ANSWER)
Mariana [72]

Answer:

112.41

Step-by-step explanation:

9 percent of 1,249 is 112.41

3 0
3 years ago
Read 2 more answers
How did cos 2x become -cos 2x
Ksju [112]
Cos2x = (cosx)^2-(sinx)^2 so if you have the minus before you have to inverse sign: (sinx)^2-(cosx)^2= -cos2x
4 0
3 years ago
An earlier study determined that 60% of women older than age 50 have annual mammograms. To see if this proportion is still valid
harina [27]

Answer:

The % of women above 50 having mammograms as devised from the survey is 70%.

Step-by-step explanation:

Given

60% of women older than age 50 have annual mammograms

Out of 1000 surveyed women of  age greater than 50, 100 women responded and out of these 100, 70 confirmed that they have annual mammograms

The % of women above 50 having mammograms as devised from the survey is 70%.

3 0
3 years ago
Other questions:
  • In triangle ABC, angle A is three times as large as angle B, and also 16 degrees larger than angle C. Find the measure of each a
    14·1 answer
  • Please help out with this QUestion thank chu very much
    9·2 answers
  • 10.4% of what is 7.02
    15·1 answer
  • PLEASE HELP ASAP!!!
    9·1 answer
  • Given that QRVTSU is a regular hexagon what are the lengths of QR and ST?
    12·2 answers
  • A spider rested on a wall 5 feet from the floor. It starts climbing up the wall, 1/2 foot every hour. When it reaches a height o
    15·1 answer
  • I’m having trouble with this
    13·1 answer
  • If two polygons are similar, then the ratios of their corresponding sides are
    11·1 answer
  • If it was quarter to five an hour and twenty-five minutes ago, what is the time now?​
    10·1 answer
  • I don't understand this problem...<br> 1/4 x (-12)=
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!