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
Elena L [17]
3 years ago
15

8c=5c+21 What would that be

Mathematics
2 answers:
NemiM [27]3 years ago
7 0
To solve for C, you have to get both of the numbers with a C on the same side.  So, subtract the 5c from the right side onto the left side.

8c = 5c + 21\\8c - 5c = 5c - 5c + 21\\3c = 21

Then, divide by 3 on each side.

3c = 21\\3c /3 = 21/3\\c = 7

So, c = 7.
siniylev [52]3 years ago
7 0
That would be a simple linear equation in the variable 'c'. ... To find its solution, first subtract 5c from each side, then divide each side by 3 .
You might be interested in
Urgent please help..
Alexxx [7]

Answer:

x ≈ 13.5

Step-by-step explanation:

Using the sine rule in the triangle, then

\frac{sin34}{x} = \frac{sin27}{11} ( cross- multiply )

x × sin27° = 11 × sin34° ( divide both sides by sin27° )

x = \frac{11sin34}{sin27} ≈ 13.5 ( to the nearest tenth )

5 0
2 years ago
Can someone help me with this math question pls? Will upvote!!
katrin2010 [14]

2^4 x 4^4 = 2^4 x  2^8 = 2^12 (because 4^4 = (2^2)^4 = 2^8)


5 0
3 years ago
Vectors! Please help! This is the last question OF MY WHOLE SEMESTER! I've tried it so many times and can't get it right. :(
Feliz [49]

Pictures always help; see the one I've attached for reference.

Call the first vector (from HQ to the supply drop) u and the second vector (from supply drop to medics) v. We then want to find w, the vector from the medics to HQ, which corresponds to the vector -(u + v). (This is because u + v is the vector pointing from HQ to the medics; we're talking about the one in the opposite direction.)

Write the vectors in horizontal/vertical component form:

u = (125 km) (cos 235º x + sin 235º y) = (-71.70 x - 102.39 y) km

v = (75 km) (cos 110º x + sin 110º y) = (-25.65 x + 70.48 y) km

Why these angles?

  • "55 degrees south of west" is 235º; due west is 180º from the positive horizontal axis, and you add 55º to this
  • "20 degrees west of north" is 110º; due north is 90º, so add 20º to this

Add the vectors:

u + v = (-97.35 x - 31.92 y) km

Multiply by -1 to get the vector w:

w = -(u + v) = (97.35 x + 31.92 y) km

The distance covered by this vector is equal to its magnitude:

||w|| = √((97.35 km)^2 + (31.92 km)^2) = 102.45 km

The direction <em>θ</em> is given by

tan<em>θ</em> = (31.92 km)/(97.35 km)  ==>  <em>θ</em> = 18.15º

6 0
3 years ago
Please find the SURFACE AREA of this figure... Write the formula and plug in the values... Write your answer with units and box
ad-work [718]

Answer:

124(cm)^2

Step-by-step explanation:

total surface area of a cuboid=2(LB+BH+HL)

length=7cm

Breadth=5cm

Height=4cm

2{(2*7)+(5*4)+(4*7)}

2{14+20+28}

2*62

124(cm)^2

5 0
3 years ago
What is the probability that a student is in 11th grade and plays football?
Ghella [55]

Answer:

b

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • What is the remainder of (3-6×2-9xl+3)?
    9·1 answer
  • Find the distance between the points (-3, 5) and (6,5)
    5·2 answers
  • If P = (-2,7), Find:<br> Ry-axis (P)<br> ([?], [])
    12·1 answer
  • In which of the following graphs is there evidence of correlation AND causation?
    12·1 answer
  • The number of days it takes a theater crew to set up a stage for a musical varies inversely as the number of
    5·1 answer
  • what is an equation of the line that s perpendicullar to y-3=-4(x+2) and passes through the point (-5,7)
    15·1 answer
  • Ms. Carey is planning to host a neighborhood picnic. To make sure she had enough ingredients, she was making a table of
    9·1 answer
  • Find the surface area of the polyhedra <br>pls!! show how you got the surface area ​​
    8·1 answer
  • Please help very urgent
    6·2 answers
  • Need help urgently please
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!