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
koban [17]
3 years ago
15

Solve this System of equation 3c+6d=18 6c-2d=22

Mathematics
1 answer:
olga55 [171]3 years ago
7 0

Answer:

3x + 6y = 18  \:  \:  \: \\  +  \\ 3 \times (6x - 2y = 22) \:  \:  \: 18x - 6y = 66 \\  \\ 21x = 84 \\ x =  \frac{84}{21}  = 4

c=x=4

d=(18-3×4)÷6=6÷6=1=y

You might be interested in
The table below represents a function. Which of the following equations could be its function rule?
cricket20 [7]

Answer:

it's the 3rd choice, Y= -3x

4 0
3 years ago
Find the volume of the composite figure. Explain your thought, explain how your arrived at your answer. SHOW YOUR WORK FOR FULL
kobusy [5.1K]
We assume the composite figure is a cone of radius 10 inches and slant height 15 inches set atop a hemisphere of radius 10 inches.

The formula for the volume of a cone makes use of the height of the apex above the base, so we need to use the Pythagorean theorem to find that.
   h = √((15 in)² - (10 in)²) = √115 in

The volume of the conical part of the figure is then
   V = (1/3)Bh = (1/3)(π×(10 in)²×(√115 in) = (100π√115)/3 in³ ≈ 1122.994 in³


The volume of the hemispherical part of the figure is given by
   V = (2/3)π×r³ = (2/3)π×(10 in)³ = 2000π/3 in³ ≈ 2094.395 in³

Then the total volume of the figure is
   V = (volume of conical part) + (volume of hemispherical part)
   V = (100π√115)/3 in³ + 2000π/3 in³
   V = (100π/3)(20 + √115) in³
   V ≈ 3217.39 in³
4 0
3 years ago
Which expression is equivalent to b^m x b^n? A. b^m+n B. b^m-n C. b^mx n D. b^m/n
noname [10]
The formula for multiplying exponents are such below.

(b^m)^n = b^mn
b^m/b^n=b^(m-n)
b^m x b^n=b^(m+n)

4 0
3 years ago
Read 2 more answers
Which property is shown?<br><br> If m∠ABC = m∠CBD, then m∠CBD = m∠ABC
otez555 [7]

ANSWER: symmetric property

hope it helps thanks

brainliest pls

6 0
3 years ago
Read 2 more answers
Which set of numbers could be the length of the sides of a triangle?
san4es73 [151]

3. {6,9,15)

for these u have use Pythagoras theorem

4 0
3 years ago
Other questions:
  • In a basketball shooting competition there are ten balls from 1-10. The number of points earned is based on the number on the ba
    13·1 answer
  • A nonzero polynomial with rational coefficients has all of the numbers [1 sqrt{2}, ; 2 sqrt{3}, ;3 sqrt{4},; dots, ;1000 sqrt{10
    13·1 answer
  • How do you solve exponents?
    11·1 answer
  • 15.6°F in 13 minutes
    13·2 answers
  • Will the opposite of a positive number always sometimes or never be a positive number
    13·2 answers
  • Solve and graph: -x+8&lt;6
    10·1 answer
  • 3(x + y) (2x - 3y) + (x + y)×2 factorize​
    11·1 answer
  • Drag and drop the correct answer​
    13·1 answer
  • Is the distance from 4.75 to 0 is the same as the distance from -4.75 from 0 on the number line​
    12·2 answers
  • Y=-8x+1 find the slope and y-intercept in this equation.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!