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
Thepotemich [5.8K]
3 years ago
15

How can I solve this system of equation with substitution 2a+2x=18 and a+3x=17

Mathematics
1 answer:
3241004551 [841]3 years ago
5 0
First solve for one variable
solve for a in second eqatn

minus 3x both sides
a=17-3x
sub 17-3x for a in first equaiton
2(17-3x)+2x=18
34-6x+2x=18
34-4x=18
minus 34 both sides
-4x=-16
divide both sides by -4
x=4
sub back
a=17-3x
a=17-3(4)
a=17-12
a=5

a is 5
x=4












WORK SECTION (without thoughts)
2a+2x=18 to a+x=9
a+3x=17

a=17-3x
(17-3x)+x=9
17-2x=9
-2x=-8
x=4

a=17-3(4)
a=17-12
a=5

x=4
a=5
You might be interested in
Raafiq's monthly mortgage payment was $1500 last year, and on average, 12% of each payment was interest. If Raafiq itemizes dedu
Helen [10]

Here the monthly payment is $1500.

Now 12% of this payment is interest.

Now 12% of 1500 = 0.12 ×1500 = $180

But this is the interest for one month.

As deductions are made in the financial year.

So the interest needs to be calculated for the whole year which is 12 months.

Now the interest for the whole year is 180 × 12 = $2160.

Option C) is the right answer.

3 0
3 years ago
Someone answer please :)
vlabodo [156]

Answer:

  • 1 : 11

Step-by-step explanation:

  • 9 : 99 =   divide both numbers by 9
  • 1 : 11
5 0
3 years ago
MATHH WHIZZES PLZZZ HELPPPPP!!!!!
Greeley [361]

Answer:

$7.40

Step-by-step explanation:

785 of 24 is 18.72, 150in = 4.17yrd, 4.117*5 is the minimum whole number that reaches 18.72, 5*1.48=7.40

3 0
3 years ago
Read 2 more answers
If a football team has a 90% chance of making a field goal for 3 points and a 35% chance of making a touchdown for 7 points, fin
sertanlavr [38]

Answer:

(35/100)×7

24.5

>

*****25.*****

5 0
3 years ago
Find the cube root of 27000​
ELEN [110]

Answer:

may be 30 is the cube root of 27000

Step-by-step explanation:

just do a claculation

3 0
3 years ago
Read 2 more answers
Other questions:
  • Please help ! this stuff is so hard ​
    8·2 answers
  • What's a logical conclusion to the conditional statements?
    13·1 answer
  • Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36 Given ⇒ 3(x − 4) + 5x = 9x − 36 Step 1 ⇒ 3x − 12 +
    11·1 answer
  • Find the perimeter of the figure shown below
    10·1 answer
  • If each unit cube has edges of length 1/2 foot what is the volume of the blue outlined prism
    6·2 answers
  • If Anthony has twice as nickels as one and one has 15 more nickels than Maria what is the value in dollars of Anthony's Nickels
    8·1 answer
  • Pl help it’s for a grade
    9·1 answer
  • Colin is painting figurines. He spends 20 minutes painting each figurine. After painting for 60 minutes, he still has 9 more fig
    6·2 answers
  • Which angle number represents an angle adjacent to
    8·1 answer
  • How do i graph y=-x+3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!