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
LenaWriter [7]
3 years ago
13

How do you solve 7x-5=30?

Mathematics
2 answers:
Nadya [2.5K]3 years ago
8 0
7x - 5 = 30

* add 5 to both sides

7x = 30 + 5

7x = 35

* divided both sides by 7

(7/7)x = 35/7

<u><em>x = 5</em></u>
kenny6666 [7]3 years ago
7 0
7x-5=30\ \ |+5\ to\ both\ sides\\\\7x=30+5\\\\7x=35\ \ |:7\\\\x=\frac{35}{7}\\\\x=5\\\\Answer\ is\ x=5.
You might be interested in
A large mixing tank initially contains 1000 gallons of water in which 40 pounds of salt have been dissolved. Another brine solut
sergey [27]

Answer:

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt =  15 - 0.005A

Option C) dA/dt =  15 - 0.005A is the correction Answer

Step-by-step explanation:

Given the data in the question;

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is?

dA/dt = rate in - rate out

first we determine the rate in and rate out;

rate in = 3pound/gallon × 5gallons/min = 15 pound/min

rate out = A pounds/1000gallons × 5gallons/min  = 5Ag/1000pounds/min

= 0.005A pounds/min

so we substitute

dA/dt = rate in - rate out

dA/dt =  15 - 0.005A

Therefore, If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt =  15 - 0.005A

Option C) dA/dt =  15 - 0.005A is the correction Answer

8 0
3 years ago
PLS HELP ME WITH THIS QUESTION
Natasha_Volkova [10]
5ft (i’m just typing because i need more characters)
6 0
3 years ago
Which represents the solution to the absolute value equation? 3|2x+4|-1=11
larisa86 [58]
The first step for absolute value equations is to isolate the expression contained within the absolute value bars:

3|2x+4|-1 = 11
3|2x+4| = 12
|2x+4| = 4

so |2x+4| is 4 units away from 0 on a number line, but we don't know in which direction -- negative or positive? you'll have two answers.

2x+4 = 4

AND

2x+4 = -4

solve both of those two step equations and you'll get

x = 0

AND

x = -4

so 0 and -4 are your solutions.
5 0
3 years ago
In 1 and 2, use the table below that shows information about squares.
frutty [35]

1. The table has a constant of proportionality of 4, therefore, the perimeter and side length of squares are proportional.

2. Equation for the proportion is, y = 4x.

Perimeter = 48 cm.

<h3>What is the Equation of a Proportional Relationship?</h3>

The equation that defines a proportional relationship is, y = kx, where k is the constant of proportionality between variables x and y.

1. For the table given:

y = perimeter

x = side length

k = constant of proportionality = 8/2 = 16/4 = 24/6 = 4.

Since k is the same all through, the equation can be modelled as y = 4x, which means the perimeter and side length of squares are proportional.

2. Using the equation, y = 4x,the perimeter (y) of a square when its side length is 12 (x) is:

y = 4(12)

y = 48 cm.

The perimeter (y) of the square is: 48 cm.

Learn more about proportional relationship on:

brainly.com/question/15618632

#SPJ1

3 0
2 years ago
Decrease 220kg by 12.5%.<br><br> NEED HELPPP!
Serga [27]
Hmm try 192.5 I think that’s right
6 0
3 years ago
Read 2 more answers
Other questions:
  • Enter a fraction equavalent to 0.6. Use only whole numbers for numerators and denominators
    15·1 answer
  • Use the Multiplication Law of Exponents to solve the expression below.<br><br> 6^1/2 6^1/2 = _____
    15·1 answer
  • What is the horizontal asymptote of the rational function f(x) = 3x / (2x - 1)?
    8·2 answers
  • How are the areas of two similar figures related
    13·1 answer
  • Jensen and Raju had the same amount of money at first. After Jensen spent
    14·1 answer
  • Solve each of the following equations<br><br> a.3x+4=21<br> b.2x-13=3x+18<br> c.6/15=3/x
    8·2 answers
  • 33.For a car traveling at a constant speed, the distance driven, d
    12·1 answer
  • Find the area of trapezoid JKLM. Round the answer to the nearest tenth.
    8·1 answer
  • (-4s+9) + (4s-6) simplify
    5·1 answer
  • A rectangular swimming pool with length b and width h is surrounded by a walkway that is 3 feet wide. Which equation below could
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!