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
inessss [21]
3 years ago
15

4(-3x-5)-(10+4x) Help?

Mathematics
1 answer:
levacccp [35]3 years ago
5 0
-12x-20-40plus 16x
-4x plus -60
You might be interested in
Solve the triangle, AMDM
krok68 [10]

Answer:

B

Step-by-step explanation:

You are given two sides and the included angle, so you need to use the law of cosines.

c² = a² + b² - 2ab cos C

c² = 12² + 13² - 2(12)(13)cos 134°

c² = 313 - 312(-0.6947)

c² = 529.733

c = 23.016

Now use the law of sines.

c/sin C = a/sin A

23.016/sin 134° = 12/sin A

sin A = 12 × sin 134° / 23.016

sin A = 0.37504

A = 22.03°

B = 180° - 134° - 22.03°

B = 23.97°

m<A = 22°; m<B = 24°; c = 23 km

Answer: B

6 0
2 years ago
Evaluate the series 4 – 2 + 1 – 0.5 + 0.25 to S10. Round to the nearest hundredth.
aleksklad [387]
The initial term of this geometric series is 4, and the common ratio is -1/2. The sum is given by

S_{n}=a_{1}\dfrac{r^{n}-1}{r-1}\\\\S_{10}=4\cdot \dfrac{(-\frac{1}{2})^{10}-1}{-\frac{1}{2}-1}=4\cdot \dfrac{(\frac{1}{1024}-1)}{(-\frac{3}{2})}\\\\=\dfrac{8}{3}\cdot \dfrac{1023}{1024}=\dfrac{341}{128}

The sum is approximately 2.66.
4 0
3 years ago
What methods could you use to calculate the x-coordinate of the midpoint of a horizontal segment with the endpoints of (-20, 0)
Ronch [10]
The coordinates (abscissa and ordinates) of the midpoint of the line segment is the average of the abscissas and the ordinates, respectively. Therefore, the x - coordinate of the midpoint is equal to -20 + 20 or 0 by 2 which is zero. The answer is letter E. 
7 0
3 years ago
Read 2 more answers
Please help me if you help me the first one will get brainless
alexgriva [62]

Answer:

2/5

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
6 8<br> What is the determinant of K=<br> O -18<br> -8<br> O 10<br> O 18<br> ?
erik [133]

Answer:

A:-18

Step-by-step explanation:

Hopefully this helps!

3 0
3 years ago
Other questions:
  • In a country X all markers are red or blue.In a box in country X there are 9 markers. I look at a random marker in the box and s
    13·1 answer
  • If a conditional and its converse are always true then the statement is a....?
    7·1 answer
  • The household income in a community is normally distributed with a mean of $42,000 and a STDev of $5,000. Find the proportion of
    11·1 answer
  • a picture is 5 inches by 7 inches. there is a frame around the picture that is of uniform width. the area of the frame and the p
    7·1 answer
  • What is the equation of the line with a x-intercept of 5 and a point (-2, -14)?
    13·1 answer
  • What is the value of z?
    14·2 answers
  • Please help due ASAP <br> Show workings
    10·2 answers
  • Given that x = 3, y = -2 and z = 0, calculate the value of each of the following algebraic expressions: 2x + y. Answer quick ple
    14·1 answer
  • Find the domain and range of the graph
    8·1 answer
  • I need help with this
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!