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
jolli1 [7]
3 years ago
7

Solve for u. 20 − (u · 0.9) = 4.7

Mathematics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

20 - 0.9u = 4.7

-0.9u = 4.7 - 20

-0.9u = -15.3

Divide both sides by - 0.9

u = 17

Hope this helps.

You might be interested in
Q2. A train travels at a constant speed of 45 m/s. a) Calculate the distance travelled by the train in:
alex41 [277]

Answer:

i) 1350 m

ii) 5400 m

Step-by-step explanation:

<u>Formula for Speed</u>

\boxed{\sf Speed=\dfrac{Distance}{Time}}

Rearrange the formula so that Distance is the subject:

\implies \sf Distance = Speed \times Time

<h3><u>Question (i)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 30 seconds

Substitute the given values into the formula for distance:

\implies \sf Distance = 45 \times 30 = 1350\:m

<h3><u>Question (ii)</u></h3>

Given:

  • Speed = 45 m/s (meters per second)
  • Time = 2 minutes

As the time is given in a different unit of time as the speed, we must first convert the time into seconds:

1 minute = 60 seconds

⇒ 2 minutes = 60 × 2 = 120 seconds

Therefore:

  • Speed = 45 m/s (meters per second)
  • Time = 120 seconds

Substitute the values into the formula for distance:

\implies \sf Distance = 45 \times 120 = 5400\:m

3 0
1 year ago
Read 2 more answers
Which expression uses the associative property to make it easier to evaluate 14(3/2 x 1/4)
Sav [38]

Answer:

Not sure but the answer to 14(3/2 x 1/4) is 5.25

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Complete the table below.
Nana76 [90]
Angle 1 is 122 degrees bc of vertical angle
Angle 2 is 87 degrees bc of alt ext angle converse
Angle 3 93 degrees
Angle 4 is 58 degrees
7 0
3 years ago
Any sort of help is appreciated, ty
Semenov [28]
The answer would be 1952 because the display of flag makes a right triangle so we will use Pythagorean theorem in order to find the sides and the sides total is 244 according to theorem, so we multiply by 8 to get the 8 flag display.  <span />
8 0
4 years ago
What is the solution to the equation below? Round your answer to two decimal places.<br> e^x = 0.5
ASHA 777 [7]

Answer:

x = -0.69

Step-by-step explanation:

We can get this by writing the equation in the logarithmic form to base e

We have this as;

log e 0.5 = x

x = ln 0.5

x = -0.69315

To two decimal places, this is -0.69

3 0
3 years ago
Other questions:
  • How do you multiply anything not specific? sorry
    10·1 answer
  • the sum of the digits of a two-digit number is 9. when the digits are reversed, the new number is 9 more than the original numbe
    6·1 answer
  • Tasha invests $5000 annually at 6% and an additional $5000 annually at 8%. Thomas invests $10000 annually at 7%. Which statement
    7·2 answers
  • The perimeter of a standard sized rug is 40 feet. The width is 2 feet less than the length. Find the dimensions.
    6·1 answer
  • Helpppppp!!’nnnnnnn.
    15·2 answers
  • If "a" is a solution to the equation 5 + 6a<br> = 7a-3, then what is the value of 2a?
    13·1 answer
  • Please hurry it’s about to be due
    7·1 answer
  • HELP MEEEEEE I GIVE BRAINLIST
    15·1 answer
  • The area of a rectangle is represented by x2 + 2x - 3. The width of the rectangle is x - 1. What is the length of the rectangle?
    8·1 answer
  • the sales price for a bicycle $315. the original price was first discounted by 5o% and then discounted by 10%. find the original
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!