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
gizmo_the_mogwai [7]
3 years ago
13

Solve for a 7a + 2a + a − 9a = 20

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
7 0

Answer:

a = 20

Step-by-step explanation:

7a + 2a + a − 9a = 20

Combine like terms

10a -9a = 20

a =20

You might be interested in
Ast year, 3,120 students competed in a statewide athletic competition. If each participating school district sent 26 students to
andreyandreev [35.5K]

Answer: 120 schools

Step-by-step explanation:

3,120 students competed in a statewide athletic competition and each participating school district sent 26 students to the athletic competition.

Total number of students= 3120

Total students sent by each school= 26

Number of participating school districts= Total number of students ÷ he students sent by each school

= 3120 / 26

= 120 students

There are 120 participating schools in the competition

3 0
3 years ago
Read 2 more answers
Tom is the custodian at the local highschool. He has a circular key ring with 9 keys on it. How many different arrangements of t
babunello [35]

tom will have his key 10

5 0
3 years ago
Read 2 more answers
I need to solve this system of equations, how do I do that?<br> 3x-4y=20<br> y=3/4x-5
Paha777 [63]

Answer:

Is is Infinitely many solutions so 0=0

<em><u>Step-by-step explanation:</u></em>

<h3>First we have to rearrange/simplify the equations:</h3>

Equation 1: 4y - 3x = -20

Equation (2):  y - 3x/4  = -5

<h3>Then you remove the fractions by multiplication: </h3>

Multiply equation (2) by 4

<h3>The Equations now look like this: </h3>

Equation 1: 4y - 3x = -20

Equation (2): 4y - 3x = -20

<h3>Solve for y on Equation (2):</h3>

y = <u><em>3x/4 - 5</em></u>

<h3>Then plug in this for the y in Equation 1 and then solve:</h3>

4•(<u><em>3x/4-5</em></u>) - 3x = -20

Therefore the answer leads to:

Infinitely many solutions, 0=0

Hope this helped :')

4 0
3 years ago
Solve it:3/10×7/10=21/100
egoroff_w [7]
I'm gonna guess you're asking if the equation is true or false.
Well, the equation is True. 3/10 * 7/10 is 21/100, or in decimal form 0.21.
Converting 21/100 to a decimal is 0.21.
0.21 = 0.21.
21/100 = 21/100.
7 0
3 years ago
Write the equation for a line that passes through the point (-8,2) and is parallel to 5x-4y=4. Enter your equation in slope inte
Lana71 [14]

Answer:

y = 5/4x + 12

Step-by-step explanation:

5x - 4y = 4

-4y = -5x + 4

y = (-5x + 4)/-4

y = 5/4x - 1

Parallel Slope ---> m = 5/4

(-8, 2)

y = mx + b

2 = 5/4(-8) + b

2 = 5 * -2 + b

2 = -10 + b

12 = b

b = 12

y = 5/4x + 12      <---- This is the answer

Hope this helps!

3 0
3 years ago
Other questions:
  • Express y=2 (x-11)2+37 in standard form
    9·1 answer
  • Solve the following system of equations.<br> 5x+2y =-6<br> 3x-2y = 22
    12·1 answer
  • A school cafeteria makes cheese sauce for macoroni using 15 cups of Swiss cheese and 17 cups of cheddar cheese. Perry tries to m
    9·2 answers
  • Clay weighs 9 times as much as his baby sister clay weighs 63 pounds how much doea hiw baby sister weigh in ounces
    9·1 answer
  • Can someone help me with this math homework please!
    10·1 answer
  • Radicals and Exponets
    8·1 answer
  • Simplify the following expression.<br> X -2/3 . X 6/7
    12·1 answer
  • 20 POINTS <br> Solve for x. -x/3=2<br><br><br> A.x = 1<br> B.x = -1<br> C.x = 6<br> D.x = -6
    10·1 answer
  • Find the value of x that makes m || n. ​
    10·2 answers
  • Multiplying by 0.89 is the same as decreasing by _____%.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!