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
tatiyna
3 years ago
14

Solve 7b 3 - 4b = 3 - 3 (b 4)

Mathematics
1 answer:
frez [133]3 years ago
8 0
7b + 3 - 4b = 3 - 3(b + 4)
3b + 3 = 3 - 3b - 12
3b + 3b = 3 - 12 - 3 = -12
6b = -12
b = -12/6 = -2
b = -2
You might be interested in
What's are the answers!!!!!!!!!!!!!!!!!!!
frozen [14]
To whatttttttttttt free points?
3 0
3 years ago
Seven customers enter a clothing store and are observed to determine if they will make a purchase. The store owner states that t
blondinia [14]

Answer: Mean = 5.25

Variance = 1.3125

Standard deviation = 1.456

Step-by-step explanation:

The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

\text{Mean}=np\\\\\text{Variance}=np(1-p)

Given : The total number of enter a clothing store : n=7

The probability of a customer making a purchase= 0.75

Now,

\text{Mean}=7(0.75)=5.25\\\\\text{Variance}=7(0.75)(0.25)=1.3125\\\\\Rightarrow\ \text{Standard deviation}=\sqrt{1.3125}=1.14564392374\approx1.1456

3 0
3 years ago
10 POINTS IDENTIFY THE SLOPE, Y-INTERCEPT AND GRAPH.<br> 1. Y = 2x + 3<br> 2. Y = 3/4x - 2
Alenkasestr [34]

Answer for problem 1: slope = 2, y intercept = 3

Answer for problem 2: slope = 3/4, y intercept = -2

Explanation:

Both equations are in the form y = mx+b. This is known as slope intercept form. This is because we can read off the values of the slope and y intercept very quickly. We have y = 2x+3 match up with y = mx+b. The m is the slope and b is the y intercept. So m = 2 and b = 3 for this equation. A similar situation happens with the other equation as well. It might help to rewrite the second equation into y = (3/4)x + (-2).

4 0
3 years ago
Read 2 more answers
A farmer has a water tank for cows in the shape of a cylinder with a radius of 7 ft and a height of 3 ft. The tank comes equippe
natima [27]

Answer:

volume of the tank be when the sensor turns on = 92.316 ft³

Step-by-step explanation:

Volume of a cylinder = πr²h

Pi = π = 3.14

Radius = r = 7 ft

Height = h = 3 ft

Volume of a cylinder = πr²h

= 3.14 × 7² × 3

= 3.14 × 49 × 3

= 461.58 ft³

The tank comes equipped with a sensor to alert the farmer to fill it up when the water falls to 20% capacity.

volume of the tank be when the sensor turns on = 20% of Volume of a cylinder

= 0.20 * 461.58 ft³

= 92.316 ft³

volume of the tank be when the sensor turns on = 92.316 ft³

5 0
3 years ago
F= [-2 0] [0 8] [2 0] C= [12 0 3/2] [1 -6 7 ] what is fc?
Crank
Add them up i think i never tried this
7 0
3 years ago
Other questions:
  • How could you estimate the difference of 6.52 and 6.520
    13·2 answers
  •   Please help:Merv has two jobs. He earns a salary of $45,000 per year as an accountant and $10.50 per hour at his part-time job
    9·1 answer
  • I’m thinking c but not as sure
    15·1 answer
  • 5 2/3 divided by 36 5/6 please help
    15·2 answers
  • What is the best first step to write this linear equation in slope-intercept form?
    9·1 answer
  • Beth is selling 14 cookies for $35, if she sells 20 cookies how much will she make?
    9·2 answers
  • 21.18 - 17.92 rounded to the nearest whole number
    6·1 answer
  • 4)
    15·1 answer
  • Please help me!!? It’s onramps precalc and I have no Idea what I am doing
    14·1 answer
  • Heather is planning a dessert display. She needs 4 ounces of strawberries for each dessert.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!