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
Ipatiy [6.2K]
2 years ago
8

If a1 = 4 and an -4an-1 then find the value of an.​

Mathematics
1 answer:
IRISSAK [1]2 years ago
7 0
1 = 4
-4an - 1

-4an -(4)
an 1
You might be interested in
What is the answer to 2(9+7)
FrozenT [24]

Answer: 32

Step-by-step explanation:

1.) Write the initial equation: 2(9+7)

2.) Add the values in the parentheses: 2(16)

3.) Multiply the value in the parentheses by 2: 2(16) = 32

5 0
3 years ago
Read 2 more answers
Hey someone help me with this please
OverLord2011 [107]

Answer:

d

Step-by-step explanation:

d. neither

If I helped please vote brainliest

6 0
3 years ago
At 10:00 a.m. the temperature is –3.4°F. The temperature increases 0.5°F each hour for the next 6 hours. If the temperature drop
Marat540 [252]

Answer:

-3.4+3=-0.4   -0.4-5.3=-5.7     (-5.7F)

Step-by-step explanation:

Brainlist plz

3 0
2 years ago
Given: ∆ABC, m∠C = 90° CB = 8, m∠B = 38º Find the area of a circumscribed circle. Find the area of the inscribed circle.
vitfil [10]

Answer:

Circumscribed circle: Around 80.95

Inscribed circle: Around 3.298

Step-by-step explanation:

Since C is a right angle, when the circle is circumscribed it will be an inscribed angle with a corresponding arc length of 2*90=180 degrees. This means that AB is the diameter of the circle. Since the cosine of an angle in a right triangle is equivalent to the length of the adjacent side divided by the length of the hypotenuse:

\cos 38= \dfrac{8}{AB} \\\\\\AB=\dfrac{8}{\cos 38}\approx 10.152

To find the area of the circumscribed circle:

r=\dfrac{AB}{2}\approx 5.076 \\\\\\A=\pi r^2\approx 80.95

To find the area of the inscribed circle, you need the length of AC, which you can find with the Pythagorean Theorem:

AC=\sqrt{10.152^2-8^2}\approx 6.25

The area of the triangle is:

A=\dfrac{bh}{2}=\dfrac{8\cdot 6.25}{2}=25

The semiperimeter of the triangle is:

\dfrac{10.152+6.25+8}{2}\approx 24.4

The radius of the circle is therefore \dfrac{25}{24.4}\approx 1.025

The area of the inscribed circle then is \pi\cdot (1.025)^2\approx 3.298.

Hope this helps!

6 0
3 years ago
What is meant by a system of linear equations?
photoshop1234 [79]
It’s a grouping of linear(straight line)equations that deal with the same variables. Hope that helped?
7 0
2 years ago
Other questions:
  • Convert 0.052 into a fraction or mixed number
    12·1 answer
  • Gender in the Population of Part-time College Students According to a 2010 report from the American Council on Education, female
    12·1 answer
  • I need help on this one. Thanks.
    8·1 answer
  • Mattison's favorite clothing store is having a sale.Jeans are 25% off mattison bought 2 pairs of jeans that were originally pric
    10·1 answer
  • If one student rides in front seat and three in the back seat how many ways can the 4 students be arranged in car
    11·1 answer
  • If cos ⁡x=−4/5, and 180°
    5·1 answer
  • Select the histogram that represents the given test scores
    5·1 answer
  • If a = 6, b= 7.5 and c= -2, calculate:<br> a + b + c
    15·2 answers
  • Helpp nowww i will give branliest
    14·2 answers
  • If f(x) = 2x + 3, what is f(-2)?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!