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
Lilit [14]
3 years ago
14

What's X? to: 15x - 7x = (-52) - 5x

Mathematics
2 answers:
Studentka2010 [4]3 years ago
6 0
-4

Because 15x-7x= 8x
8x+5x= 13x
13x= -52
-52 / 13= -4
x = -4

ollegr [7]3 years ago
3 0
First, condense what's on the right side of the problem:
15x-7x=-52-5x \\ 8x=-52-5x
Nest, get all the terms with x on one side. To do this, add 5x to both sides:
(8x)+5x=(-52-5x)+5x \\ 13x=-52
Finally, divide each side by 13 to get x alone:
(13x)/13=(-52)/13 \\ x=-4
The answer is x = -4.

To check, simply plug -4 in for x like so:
15(-4)-7(-4)=-52-5(-4) \\ -60--28=-52--20 \\ -60+28=-52+20 \\ -32=-32
Since we get the same answer on both sides of the equation, we know our answer is correct!

Hope this helps!
You might be interested in
A mathematical phrase containing at least one variable is
Mashutka [201]

Answer:

An algebraic expression

4 0
3 years ago
Aaliyah is working two summer jobs, making $7 per hour walking dogs and making $10 per hour tutoring. In a given week, she can w
Minchanka [31]

Answer:

140 >/ 7x + 10y (read as 140 is greater than or equal to 7x plus 10y)

x + y /< 17 - to represent the number of hours she can work

she will work at least 10 hours walking dogs and at least 7 tutoring

Step-by-step explanation:

4 0
3 years ago
A map that was created using a scale of 1 inch : 3 miles shows a lake with an area of 18 square inches. what is the actual area
Dmitrij [34]

Answer: The area of the lake is actually 182 square miles 1 inch represents one side 3 miles long the other side is also 3 miles. 3×3=9 square miles. 1 Square Inch on the map represents 9 Square Miles.

Step-by-step explanation: If the area on the map is 18 square inches, and each square inch represents 9 square miles, multiply 18×9=182 to get the area of that big lake.

4 0
3 years ago
Read 2 more answers
Cube and cube roots 27000<br>​
boyakko [2]

Answer:

lcm for cuberoot

2*2*2*5*5*5*3*3*3

for cuberoot we will make pairs of common three numbers and write them one time

2*5*3

30

check 30*30*30=27000

cube

multiply 27000 three times with itself

19683000000000.0 is the answer

6 0
3 years ago
Read 2 more answers
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50%50% of this population prefer
n200080 [17]

Answer:

0.1527

Step-by-step explanation:

Given that a researcher wishes to conduct a study of the color preferences of new car buyers.

Suppose that 50% of this population prefers the color red

15 buyers are randomly selected

Let X be the no of buyers who prefer red.

X has exactly two outcomes red or non red.

Also each buyer is independent of the other

Hence X is binomial with p = 0.5 and n = 15

Required prob =The probability that exactly three-fifths of the buyers would prefer red

= P(X=9)

= 15C9 (0.9)^9 (0.6)^6

=5005(0.0000305)=0.1527

6 0
3 years ago
Other questions:
  • 2. Suppose that
    14·1 answer
  • (x-4)^2+(y+12^2)=17^2 what is the length of its radius
    9·2 answers
  • What is the area of OA to the nearest<br> tenth? (Use 3.14 for T.)
    14·1 answer
  • I need help finding the answer
    10·1 answer
  • While playing a game, Adam rolls the dice. If one die shows an even number and the other die show an odd number, which of the fo
    7·1 answer
  • Help me please I don’t understand
    7·2 answers
  • The equation k(x+1)^2/3+(y+2)^2/4=1 represent circle if<br>​
    10·1 answer
  • YOU HAVE SAVED $5000 AND INVESTED IT AT A RATE 3.2% FOR 5 YEARS. WRITE AN EXPONENTIAL FUNCTION TO REPRESENT THIS SITUATION. HOW
    7·1 answer
  • The diagrams may not be drawn to scale. Find the value of y. AC is a straight line. А 56° yº B 123° су
    8·1 answer
  • The axis of symmetry of a quadratic equation is x = –3. If one of the zeroes of the equation is 4, what is the other zero?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!