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
alexdok [17]
3 years ago
12

YOOOO HELP ME ASAP DUDED BY MIDNIGHT BRO

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

Answer:

x=5

Step-by-step explanation:

We know that a pentagon is in total 540 degrees. From this, we add all other numbers and set them equal to 540 to solve for x.

So, after adding all the angles and setting them equal to 540, we get this.

21x+435=540

21x=105

x= 5

If you want, plug 5 into x and see if it adds up to 540 to check

21(5)+435=540

You might be interested in
Sarah is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. She pur
deff fn [24]
 Her conclusion is not valid because she needs to give each plant the same amount of water.
5 0
4 years ago
Read 2 more answers
Find the area of the region bounded by the parabola y = 5x^2, the tangent line to this parabola at (4, 80), and the x-axis.
o-na [289]
First we have to find the tangent line:
y - y o = f ` ( x o ) * ( x - x o )
f ` ( x ) = 10 x
y - 80 = 40 ( x - 4 )
y = 40 x - 160 + 80
y = 40 x - 80
There are 2 parts of this region:
A =\int\limits^2_0 {5 x^{2} } \, dx +  \int\limits^4_2 {(5 x^{2} -40x+80)} \, dx= \\ 5 x^{3} /3  \left \{ {{2} \atop {0}} \right. +( 5 x^{3} -20 x^{2} +80x) \left \{ {{4} \atop {2}} \right.
A = 40/3 + 320/3 - 320 + 320 - 40/3 + 80 - 160 = 320/3 - 240/3 = 80/3 
4 0
3 years ago
If y varies directly as x and y =6 when x =2 ... find y when x=9
nevsk [136]

Answer:

27

Step-by-step explanation:

y = kx, where k is the constant of proportionality.  If x = 2 and y = 6, that constant is determined as follows:

6 = k(2), or k = 3.  Then y = 3x.  When x = 9, y = 27

4 0
3 years ago
Write the quadratic equation whose roots are −4 and 2 , and whose leading coefficient is 1 .
charle [14.2K]
Quadratic: ax^2+bx+c
a=1
roots=-4,2
=(x-(-4))(x-2)
=(x+4)(x-2)
=x^2+4x-2x-8
=x^2+2x-8
4 0
3 years ago
Solve for x: -5x = -45
galina1969 [7]

Answer:

x=9

Step-by-step explanation:

Isolate the variable you are solving for.

In this case, -5x needs to be divided by -5 to isolate x. But you must do to one side of the equation what you did to the other, so -45 must also be divided by -5x.

-5x/-5=-45/-5

x=9

5 0
3 years ago
Read 2 more answers
Other questions:
  • The proportion of baby boys born in the United States has historically been 0.508. You choose an SRS of 50 newborn babies and fi
    13·1 answer
  • Find the value of x rounded to the nearest tenth<br> A.) 6.2<br> B.) 5.4<br> C.) 6.5<br> D.) 5.3
    13·2 answers
  • What is 0.0625 in fraction form?
    7·1 answer
  • Find the 50th term of the sequence 5, -2, -9, -16
    10·1 answer
  • Find the slope of the graph
    12·1 answer
  • PLEASE ANWSER FOR ME FAST SHOW WORK PLS!!!
    10·1 answer
  • Can someone help me again please ?!
    11·2 answers
  • Given that a x b = 70, work out the value of 3b/a
    5·1 answer
  • Write the equation in slope intercept form
    6·2 answers
  • A nickle has a mass of 5 grams while a penny has a mass of 2. 5 grams. What is the mass in kilograms of a bag of coins containin
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!