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
SCORPION-xisa [38]
3 years ago
5

What is one fourth of a number decreased by 10,is -50 ​

Mathematics
2 answers:
Andru [333]3 years ago
6 0

Answer:

x=-160

Step-by-step explanation:

One-fourth of a number decreased by 10 is -50. Find the number.

\frac{1}{4}x-10=-50

First, add 10 to both sides:

\frac{1}{4}x-10+10=-50+10\\\\\frac{1}{4}x=-40

Then, divide each side by \frac{1}{4}:

\frac{1}{4}x\div{\frac{1}{4}}=-40\div{\frac{1}{4}}\\\\x=-40\times{\frac{4}{1}}\\\\x=-160

Rashid [163]3 years ago
5 0

1/4x - 10 = -50

1/4x = one forth of a number

-10 is decreased by 10

= -50 means is -50

You might be interested in
A) x+(3x÷2y)<br>b) (b⁹)²×b⁵÷b¹¹=<br>c) (4²)⁶×4⁷÷4¹⁶=​
monitta

Answer:

a) x+3x/2y or (3x+2xy)/2y

b) b^12

c) 4^3 or 64

Step-by-step explanation:

4 0
3 years ago
the half life of c14 is 5730 years. Suppose that wood found at an archeological excavation site contains about 35% as much C14 a
Furkat [3]

Answer:

The wood was cut approximately 8679 years ago.

Step-by-step explanation:

At first we assume that examination occured in 2020. The decay of radioactive isotopes are represented by the following ordinary differential equation:

\frac{dm}{dt} = -\frac{m}{\tau} (Eq. 1)

Where:

\frac{dm}{dt} - First derivative of mass in time, measured in miligrams per year.

\tau - Time constant, measured in years.

m - Mass of the radioactive isotope, measured in miligrams.

Now we obtain the solution of this differential equation:

\int {\frac{dm}{m} } = -\frac{1}{\tau}\int dt

\ln m = -\frac{1}{\tau} + C

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} } (Eq. 2)

Where:

m_{o} - Initial mass of isotope, measured in miligrams.

t - Time, measured in years.

And time is cleared within the equation:

t = -\tau \cdot \ln \left[\frac{m(t)}{m_{o}} \right]

Then, time constant can be found as a function of half-life:

\tau = \frac{t_{1/2}}{\ln 2} (Eq. 3)

If we know that t_{1/2} = 5730\,yr and \frac{m(t)}{m_{o}} = 0.35, then:

\tau = \frac{5730\,yr}{\ln 2}

\tau \approx 8266.643\,yr

t = -(8266.643\,yr)\cdot \ln 0.35

t \approx 8678.505\,yr

The wood was cut approximately 8679 years ago.

5 0
3 years ago
Help me with my math please​
sergij07 [2.7K]

Step-by-step explanation:

1 _21:00_ , _22:10_, 1:10

2. 1:20

3. 18:00

4. 21:35

5 0
3 years ago
Read 2 more answers
The given line passes through the points (−4, −3) and (4, 1).
dimulka [17.4K]
1+3/4+4
4/8
1/2
y-3=-2(x+4)
y - 3 = -2(x + 4)
5 0
3 years ago
Brainliest ! 40 points , pls answer all or don't answer
MAVERICK [17]

Answer:

The answer to your question is below

Step-by-step explanation:

1.- Find the volume of the cylinder

Data

diameter = 9 cm

radius = 4.5 cm

height = 15 cm

Formula

   V = πr²h

   V = π(4.5)²(15)

  V = 303.75π         This is te answer for the volume in terms of π

       = 952.78 cm³                

2.- Find the volume of the cylinder

height = 40 yd

radius = 12 yd

Formula

   V = πr²h

   V = π(12)²(40)

   V = 5760π              This is te answer for the volume in terms of π

       = 18086.4 cm³

3.- What is the height .......

height = q

side length = r

4.- Volume of a pyramid

    Volume = Area of the base x height

Area of the base = 11 x 11 = 121 cm²

    Volume = 121 x 18

   Volume = 2178 cm³

6 0
3 years ago
Read 2 more answers
Other questions:
  • The function c(p)= 0.99p represents the cost in dollars of p pounds of peaches. if the cost per pound increases by 10%, how will
    6·2 answers
  • Luanne made a photocopy of a drawing of a rectangle. The original drawing was 4.5 inches wide and 6 inches long. The copy was 6.
    15·1 answer
  • What does the x-intercept sometimes represent in a real world problem
    15·1 answer
  • Solve for x. Express the answer in simplest form. <br><br> 2/1 = 8z -2/9
    11·1 answer
  • Given the equation
    8·2 answers
  • Please help I’m being timed
    14·2 answers
  • What is the slope of the line shown in the graph?<br><br> 1) -1<br> 2) -2<br> 3) -1/2<br> 4) 2
    6·1 answer
  • PLEASE HELP ME!!!!! PLEASE I WANT TO GET THIS RIGHT
    5·1 answer
  • Need help asap dont know how to do it​
    9·2 answers
  • Solve for X
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!