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
belka [17]
3 years ago
13

PLEASE HELP ASAP MIDDLE SCHOOL MATH

Mathematics
1 answer:
GREYUIT [131]3 years ago
3 0

Step-by-step explanation:

area= 1/2 (base1+base²) h

A = {1/2 (5+12)} × 4

A = {1/2 (17)} × 4

A = 8.5×4

A = 34

I think this is right

You might be interested in
Consider the differential equation x^2 y''-xy'-3y=0. If y1=x3 is one solution use redution of order formula to find a second lin
Anastasy [175]

Suppose y_2(x)=y_1(x)v(x) is another solution. Then

\begin{cases}y_2=vx^3\\{y_2}'=v'x^3+3vx^2//{y_2}''=v''x^3+6v'x^2+6vx\end{cases}

Substituting these derivatives into the ODE gives

x^2(v''x^3+6v'x^2+6vx)-x(v'x^3+3vx^2)-3vx^3=0

x^5v''+5x^4v'=0

Let u(x)=v'(x), so that

\begin{cases}u=v'\\u'=v''\end{cases}

Then the ODE becomes

x^5u'+5x^4u=0

and we can condense the left hand side as a derivative of a product,

\dfrac{\mathrm d}{\mathrm dx}[x^5u]=0

Integrate both sides with respect to x:

\displaystyle\int\frac{\mathrm d}{\mathrm dx}[x^5u]\,\mathrm dx=C

x^5u=C\implies u=Cx^{-5}

Solve for v:

v'=Cx^{-5}\implies v=-\dfrac{C_1}4x^{-4}+C_2

Solve for y_2:

\dfrac{y_2}{x^3}=-\dfrac{C_1}4x^{-4}+C_2\implies y_2=C_2x^3-\dfrac{C_1}{4x}

So another linearly independent solution is y_2=\dfrac1x.

3 0
3 years ago
What is the volume of a cone that has a height of 7 mm and a radius of 3 mm?
vaieri [72.5K]
<span>So we want to know the volume V of a cone with a height h=7 mm and of radius r=3 mm rounded to the nearest hundreth. We need the formula for the volume of a cone: V=(1/3)*pi*r^2*h. Now we simply input the numbers and get: V=65.94 mm^2 and that is rounded to the first hundreth.</span>
7 0
3 years ago
Area of a park is exactly halfway between 2.4 and 2.5 acres, what is the area of the park
vitfil [10]

2.40, 2.41, 2.42, 2.43, 2.44, 2.45, 2.46, 2.47 ,2.48 ,2.49, 2.50

2.45 is area


7 0
3 years ago
What is a quotient ??? I do not understand
kirza4 [7]
A quotient is a answer or the sum
6 0
3 years ago
Read 2 more answers
CAN ANYONE HELP PLEASE!!
icang [17]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • If you were to round off the measurement 2.33501 grams to three digits, you would get
    15·1 answer
  • PLZ HELP ME BY TONIGHT AT 12:30 ITS DUEEE <br><br> ps/ plz answer ALLL the questions
    11·1 answer
  • 2222222222222222222222 x 0​
    10·2 answers
  • 4(x+7)+3(2x-3) what is the answer to this
    9·2 answers
  • Samantha took a survey of the students in her grade to see how many are likely to join a knitting club if she starts one. She su
    9·1 answer
  • Evaluate the expression. 4! • 3! <br> 12 <br> 30 <br> 144 <br> 5,040
    6·2 answers
  • The graph of | x | is the solid black graph below. Which function represents the dotted graph? (pls help)
    8·1 answer
  • What is the slope of the line through
    15·1 answer
  • How to find the length when the perimeter and width is given
    5·2 answers
  • a carton of orange juice contains 540ml a special offer carton contains an extra 35% how many millilitres are in the special off
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!