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
LUCKY_DIMON [66]
3 years ago
9

Please hurry and tell me the answer.

Mathematics
2 answers:
alex41 [277]3 years ago
6 0

Answer:

The answer is C

Step-by-step explanation:

vaieri [72.5K]3 years ago
4 0

Answer:

A is correct

Step-by-step explanation:

You might be interested in
The sum of three consecutive even integers is 264. What are the integers? (show your work)
Anettt [7]

Answer:

1 Expert Answer

X + Y + Z = 264. Since Y is 1 bigger than X, Y = X + 1. Since Z is 1 bigger than Y, Z = Y + 1. But Y = X + 1, so Z = (X + 1) + 1 = X + 2.

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
rancho middle school has an average of 23/3/8 students per teacher. write this mixed number as a decimal​
Len [333]

Rancho middle school has an average of 23 3/8 students per teacher.write this mixed number as a decimal.

Answer:

23\frac{3}{8} = 23.375

Step-by-step explanation:

Given:

The given mixed number is 23\frac{3}{8}

We need to write the given mixed number as a decimal.

So, we find the decimal number by separating the parts.

=23+\frac{3}{8}

The value of \frac{3}{8}=0.375

=23+0.375

=23.375

Therefore, the decimal number of given mixed number is =23.375

8 0
3 years ago
60 plus 18% ill give brainliest :)
aksik [14]

Answer:

70.8

Step-by-step explanation:

YOU'RE WELCOME

8 0
3 years ago
A vacant lot is being converted into a community garden. The garden and and a walkway around its perimeter have an area of 460 s
mariarad [96]

Answer:

The width of the walkway is 4 feet.

Step-by-step explanation:

The garden and a walkway around its perimeter have an area of 460 square feet.

The length of the garden = 15 feet

The width of the garden = 12 feet

Assuming that walkway is of uniform width, we can solve the following equation.

(12+2x)\times(15+2x)= 460

Expanding this we get;

4x^{2}+54x+180=460

=> 4x^{2}+54x-280=0

We will solve this using quadratic equation formula:

x=\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}

Here a = 4 , b = 54 , c = -280

We get the roots as x = 4 and x = -\frac{35}{2}

Neglecting the negative value, we will take x = 4 feet.

Hence, the width of the walkway is 4 feet.

5 0
3 years ago
Other questions:
  • Cedric can buy 3 songs for $3.60 or 4 songs for $4.80. How much do you think he would pay for 5 songs?
    7·2 answers
  • A lottery ticket which pays $1 million dollars will only cost you $1 dollar. To win a person must match 5 numbers from a total o
    13·1 answer
  • Which scatterplot shows the strongest negative linear correlation​
    11·2 answers
  • 7x-6
    14·1 answer
  • Belina bought 4 1/2 yards of red fabric. She also bought 6 yards of white fabric. How many inches of white fabric than red fabri
    14·2 answers
  • Help please!!!!!! asap
    8·1 answer
  • 2n +9+5n=30 need help on this
    11·2 answers
  • There are 99 males and 121 females participating in a marathon. What percent of the participants are female?​
    13·1 answer
  • Unit 11: volume and surface area packet
    7·1 answer
  • Abcd is a Square, where AE=1.4. Use the properties of a square to determine the length of BD. Please help!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!