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
Anon25 [30]
3 years ago
10

If y=5x-3(3x+7), what is the value of x when y=-18?

Mathematics
1 answer:
mina [271]3 years ago
3 0

Answer:

x = -3/4

Step-by-step explanation:

Simplify the equation.

5x - 3(3x + 7) = y

5x - 3*3x + 7 *(-3) = y   {Distributive rule}

         5x - 9x - 21 = y  

Combine like terms

           -4x - 21 = y

Now, substitute the value of y = -18

-4x - 21 = -18

Add 21 to both sides

-4x  = -18 + 21

 -4x = 3

Divide both sides by -4

x = -3/4

You might be interested in
Kathi and Robert Hawn had a pottery stand at the annual Skippack Craft Fair. They sold some of their pottery at the original pri
Vinil7 [7]

Answer:

The number sold at $12.50 is  25

The number sold at $9.50 is 62

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

x 12.50 + y 9.50=901.50

x+y= 87

Where

x= number of pottery pieces sold

y= number of pottery pieces sold at a decreased price  

Multiplying the second equation by 9.50, and subtracting the second equation to the first equation:

12.50 x + 9.50y = 901.50

-

9.50 x+ 9.50 y= 826.5

__________________

3 x = 75

Solving for x

x =75/3

x = 25

Replacing x=25 on any equation:

x+y= 87

25+y =87

y=87-25

y= 62

5 0
3 years ago
Write an inequality to compare the absolute of -32 and the absolute value of -23.
AveGali [126]
The absolute value of -32 is greater than the absolute value of -23
6 0
3 years ago
What is 3.25 x $1.40
Korolek [52]

Answer:

if you make the 3.5 equal 7/2

and the 1.40 equal 7/5 its will be more easier

so7/5 × 7/2 its 4.9

sorry guys its not 4.9 i made mistake with 3.25 i was thinking that it was 3.50 any wwy

i have good method too

we can make 3.25 equal 13/4 and 1.40 equal 7/5 the multiply it

we will find 91/20 but we have problem its The 10 dont worry we can take the 10 from the both number and we will get 9.1/2 and We can devide easily now and the answer is 4.55

sorry iam trying so hard to speak engilish well sorry if u cannot understand me big respet for all the students

8 0
3 years ago
Read 2 more answers
What is the equation of the quadratic function graphed below?
Hitman42 [59]

Answer:

y = -3(x + 1)² + 9

Step-by-step explanation:

y = a(x - h)² + k, where (h, k) is the vertex

The vertex of the quadratic function is (-1, 9)

The only equation listed that has a vertex at (-1, 9) is:

y = -3(x + 1)² + 9

5 0
3 years ago
Someone plz answer this for me
pishuonlain [190]

Answer:

10

Step-by-step explanation:

D=\sqrt{(1-(-5))^2+(4-(-4)^2}

D=\sqrt{6^2+8^2}

D=\sqrt{36+64}

D=\sqrt{100}

D=10

3 0
3 years ago
Other questions:
  • Please Solve This Problem For Me<br><br> x^2 + 5^2 = 7^2<br><br> (^2 Means Squared)
    14·1 answer
  • Which is a question you probably would ask when comparison shopping? A. What is the warranty on this product versus another prod
    5·1 answer
  • If U = {x: X € N, 1 &lt; × &lt; 15)
    5·1 answer
  • When solving subtraction problems, what should you do when there aren't enough counters to remove? ​
    10·1 answer
  • HELP ME WITH THIS MATH
    15·2 answers
  • Can u guys help me please
    15·1 answer
  • HURRY PLEASE I NEED THIS NOW
    7·1 answer
  • Demichael orders a set of numbers on his
    12·1 answer
  • Please help!! markup and markdown word problems.
    15·1 answer
  • *Mastery Check. DO NOT ask for help. Find the area of the sector. Round your answer to the nearest tenth.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!