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
Naily [24]
3 years ago
7

Find X and show steps if possible please;)

Mathematics
2 answers:
LuckyWell [14K]3 years ago
7 0
Alright

so the first thing you do is set up your equation


it should look something like this:


90=3x+10

next, you subtract 10 from each side resulting in 80

3x=80

divide 80 by three and you should get 26.67 or rounding either 26 or 27

then round up or down... according to the instructions.....

hope I could help! :)) XD
Nuetrik [128]3 years ago
7 0
3x+10+x=90
4x+10=90
4x=80
x=20

3x+10=70
You might be interested in
HELP ASAP! LOOK AT PIC PLS
ra1l [238]

Answer:

E

Step-by-step explanation:

well, yes we know what coins there are and that they’re in jars right? but to find which jar is worth the most, we need to know how many coins are in each. she could have 300 pennies, 2 quarters, 4 dimes, and 7 nickels. we need more information to answer this question so E is the only correct option!

6 0
3 years ago
Identify the solution(s) of v2+11v−26=0.
miss Akunina [59]

Answer:

i solved for v and got

v = 2, -13

i hope this helps :]

4 0
3 years ago
In a survey of 150 students at Kennedy Middle School, 48% said
BigorU [14]

Answer:

660 people

Step-by-step explanation:

48% people prefer thick pizza

1 375 people x 48% = 660

6 0
2 years ago
Find, correct to four decimal places, the length of the curve of intersection of the cylinder 16x2 + y2 = 16 and the plane x + y
Yuri [45]

Let the curve C be the intersection of the cylinder  



16x^2+y^2=16



and the plane



x+y+z=1



The projection of C on to the x-y plane is the ellipse



16x^2+y^2=16



To see clearly that this is an ellipse, le us divide through by 16, to get



\frac{x^2}{1}+ \frac{y^2}{16}=1



or  



\frac{x^2}{1^2}+ \frac{y^2}{4^2}=1,



We can write the following parametric equations,



x=cos(t), y=4sin(t)



for  



0\le t \le 2\pi



Since C lies on the plane,



x+y+z=1



it must satisfy its equation.



Let us make z the subject first,  



z=1-x-y



This implies that,



z=1-sin(t)-4cos(t)



We can now write the vector equation of C, to obtain,



r(t)=(cos(t),4sin(t),1-cos(t)-4sin(t))



The length of the curve of the intersection of the cylinder and the plane is now given by,



\int\limits^{2\pi}_0 {|r'(t)|} \, dt



But  



r'(t)=(-sin(t),4cos(t),sin(t)-4cos(t))



|r'(t)|=\sqrt{(-sin(t))^2+(4cos(t))^2+(sin(t)-4cos(t))}



\int\limits^{2\pi}_0 {\sqrt{2sin^2(t)+32cos(t)-8sin(t)cos(t)} }\, dt=24.08778184



Therefore the length of the curve of the intersection  intersection of the cylinder and the plane is 24.0878 units correct to four decimal places.

6 0
3 years ago
Solve the equations -9x + 2y = 23 and -4x - y = -3
Ira Lisetskai [31]

Answer:

(-1,7)

Step-by-step explanation:

-9x + 2y = 23

-4x - y = -3

multiplying equation 2 by 2

-9x + 2y = 23

-8x - 2y = -6

adding the two equation to cancel out y

-17x = 17

x = -1

plugging back x = -1 into the second equation

4 - y = -3

-y = -7

y = 7

8 0
2 years ago
Read 2 more answers
Other questions:
  • n a rural area, only about 30% of the wells that are drilled find adequate water at a depth of 100 feet or less. A local man cla
    9·1 answer
  • I Need This Answer Fast! (Select All That Apply Choose 3 Answers)
    9·2 answers
  • 54 tacos was sold at lunch. What is six times as many as the number of hotdogs that were sold. How many hotdogs were sold?
    5·1 answer
  • Question 6 pleaseeeee
    9·1 answer
  • What is the equation for a nonlinear function?
    11·1 answer
  • 85% of 40 emails equals
    6·2 answers
  • Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
    13·1 answer
  • Find the missing term of the arithmetic sequence<br> 17,____,23
    14·1 answer
  • I need help on answering these 2 questions with evidence:<br> 30 + (-10) =<br> 4 - (-10) =
    5·2 answers
  • What is (b-2)x(b-7) multiplied
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!