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
Sav [38]
3 years ago
10

Solve the following equations for x (5 points each). (a)-3x+10=34

Mathematics
1 answer:
yan [13]3 years ago
6 0

Answer:

x = -8

Step-by-step explanation:

You might be interested in
The mean of 5 numbers is 30. The median is 33. What might the numbers be?
tatiyna

Let a,b,c,d and e are five numbers

mean = (a +b+ c+ d+e)/5 = 30

⇒ (a +b+ c+ d+e) = 150_______(1)

now, Let the number excluded be a

then, new mean =  (b+ c+ d+e)/4 = 28

⇒ (b+ c+ d+e)= 112

putting this value in (1),

⇒a + 112 = 150

⇒a = 150 -112 = 38

excluded number = 38

4 0
2 years ago
An area is approximated to be 14 in 2 using a left-endpoint rectangle approximation method. A right- endpoint approximation of t
USPshnik [31]
The trapezoidal approximation will be the average of the left- and right-endpoint approximations.

Let's consider a simple example of estimating the value of a general definite integral,

\displaystyle\int_a^bf(x)\,\mathrm dx

Split up the interval [a,b] into n equal subintervals,

[x_0,x_1]\cup[x_1,x_2]\cup\cdots\cup[x_{n-2},x_{n-1}]\cup[x_{n-1},x_n]

where a=x_0 and b=x_n. Each subinterval has measure (width) \dfrac{a-b}n.

Now denote the left- and right-endpoint approximations by L and R, respectively. The left-endpoint approximation consists of rectangles whose heights are determined by the left-endpoints of each subinterval. These are \{x_0,x_1,\cdots,x_{n-1}\}. Meanwhile, the right-endpoint approximation involves rectangles with heights determined by the right endpoints, \{x_1,x_2,\cdots,x_n\}.

So, you have

L=\dfrac{b-a}n\left(f(x_0)+f(x_1)+\cdots+f(x_{n-2})+f(x_{n-1})\right)
R=\dfrac{b-a}n\left(f(x_1)+f(x_2)+\cdots+f(x_{n-1})+f(x_n)\right)

Now let T denote the trapezoidal approximation. The area of each trapezoidal subdivision is given by the product of each subinterval's width and the average of the heights given by the endpoints of each subinterval. That is,

T=\dfrac{b-a}n\left(\dfrac{f(x_0)+f(x_1)}2+\dfrac{f(x_1)+f(x_2)}2+\cdots+\dfrac{f(x_{n-2})+f(x_{n-1})}2+\dfrac{f(x_{n-1})+f(x_n)}2\right)

Factoring out \dfrac12 and regrouping the terms, you have

T=\dfrac{b-a}{2n}\left((f(x_0)+f(x_1)+\cdots+f(x_{n-2})+f(x_{n-1}))+(f(x_1)+f(x_2)+\cdots+f(x_{n-1})+f(x_n))\right)

which is equivalent to

T=\dfrac12\left(L+R)

and is the average of L and R.

So the trapezoidal approximation for your problem should be \dfrac{14+21}2=\dfrac{35}2=17.5\text{ in}^2
4 0
3 years ago
A) 75YARDS B) 85 YARDS C)80 YARDS D) 90 YARDS
Amanda [17]

Answer:

________________

I think it's 85 yards

7 0
3 years ago
How does a reflection across the y-axis change the coordinates of a shape?
Dmitriy789 [7]

Answer:

in (x,y), it becomes (-x,y)

Step-by-step explanation:

8 0
3 years ago
Last year there were 475 students at Valley Middle School. This year there are 675.
tensa zangetsu [6.8K]

Answer:

33.35% maybe

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • A circle is centered at C(0,0)The point M(0,sqrt{3}) is on the circle. Where does the point N(-5,-3) lie?
    10·1 answer
  • Find the indicated limit, if it exists. limit of f of x as x approaches 0 where f of x equals 7 minus x squared when x is less t
    5·1 answer
  • The vertex of the function’s graph is given. Find c. y = x2 + 10x + c; (-5, -27)
    9·1 answer
  • How do you solve 8 -x = 20
    5·2 answers
  • Help me please <br><br> -4.5+4.4+_____=0
    15·1 answer
  • 5(2x)to the third power
    6·1 answer
  • You want to put 2500 in a simple interest account it has a 4 % annual interest rate how long will it take you to earn $200 in in
    13·1 answer
  • Plug in the value of x
    11·2 answers
  • Factor completely 3x^2+9x+6
    14·1 answer
  • How much of the circle is shaded? Write your answer as a fraction in simplest form
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!