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
saw5 [17]
3 years ago
11

Please solve for x. (-: Also please show me a step-by-step, thanks! uwu

Mathematics
1 answer:
Stells [14]3 years ago
5 0

Answer:

x=27

Step-by-step explanation:

we know that

(3x+9)^o+90^o=180^o ----> by supplementary angles (form a linear pair)

Solve for x

Combine like terms

(3x+99)^o=180^o

subtract 99 both sides

3x=180-99\\3x=81

Divide by 3 both sides

x=27

You might be interested in
A machinist drilled a conical hole into a cube of metal as shown.
Mnenie [13.5K]

Answer:

512ft³

Step-by-step explanation:

If the cube its sides of all 8 feet, then the length, width, and height is 8 feet. Then, multiply 8 by 8 you get 64 and then multiply 64 by 8 to get 512.

7 0
2 years ago
A fireman's water hose shoots 320 kg of water each second against the door of a building. The velocity of the water is 20 m/s an
NeX [460]

Answer:

6400\ \text{N}

Step-by-step explanation:

\dfrac{m}{t} = Mass flow rate of water = 320 kg/s

m = Mass of water on the door

t = Time

v = Velocity of water on the door = 20 m/s

Force is given by

F=\dfrac{m}{t}v\\\Rightarrow F=320\times 20\\\Rightarrow F=6400\ \text{N}

The average force is exerted by the stream of water is 6400\ \text{N}.

3 0
3 years ago
How many solutions does the system of linear equations 6a + 3b = 12 and<br> 6a - 3b = 12 have?
Olin [163]

Answer:

One solution

Step-by-step explanation:

Lets solve it for b

3b= -6a+12

3b= 6a-12

Simplifying

b= -2a+4

b= 2a+4

Both have same slope and intercept hence both lines are going to intersect at one point. So the equations are having one solution.

3 0
3 years ago
Suppose that J and K are points on the number line.
rodikova [14]

Answer:

-7, -27

Step-by-step explanation:

J is at -17. K is 10 units from J.

Start at point J, -17:

a) If you go 10 units to the right, you end up at -17 + 10 = -7

b) If you go 10 units to the left, you end up at -17 - 10 = -27

J can be at -7 or at -27

Answer: -7, -27

8 0
3 years ago
Find the total amount in Mr. G’s account, if he invests $9000 for 5 years at a 6% interest rate.
AysviL [449]

Answer:

20,000

Step-by-step explanation:

for 5 6% at those with division 20,000 together and they would have 20,000

8 0
2 years ago
Other questions:
  • A number s is subtracted from 7. When the result is divided by 3, the quotient is 2. What is the number?
    15·2 answers
  • I don't understand can someone explain
    15·1 answer
  • 26)
    12·2 answers
  • What is the formula for combinations
    6·1 answer
  • A trader bought m apples for $12.
    7·1 answer
  • 6 divided by 938 long division
    15·1 answer
  • What is an equation of the line that is perpendicular to y=−2/3x+5 and passes through the point (2, 11) ? Enter your equation in
    14·1 answer
  • Aero had $27.88 in her account. She wrote a
    12·1 answer
  • Does anyone know the domain and range of this?
    5·1 answer
  • Bernie is filling up a swimming pool the graph shows the volume v of water in the swimming pool at r hours work out the rate of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!