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Amiraneli [1.4K]
2 years ago
13

-2 + 3b = 5b - 2(2b + 3) How do you solve for b?

Mathematics
1 answer:
mina [271]2 years ago
6 0
-2 + 3b = 5b - 2(2b + 3)  Distribute the -2 through the parentheses.
-2 + 3b = 5b - 4b - 6        Combine like terms
-2 + 3b = b - 6                 Bring all "b's" to one side of the equation
-2 + 3b - b = b - b - 6       Combine like terms
-2 + 2b = -6                      Bring the 2 to the right side of the equation
-2 + 2 + 2b = -6 + 2          Combine like terms
2b = -4                              Isolate b by dividing both sides by 2
b = -4/2 = -2

Answer b = -2
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Chris bought six pounds of apples for 10.80. How much would 15 pounds of apples cost at the same price per pound?
love history [14]

Answer: $27

Step-by-step explanation: First we would like to know how much it costs per pound of apples. To find that out simply divide 10.80 by 6 to find the price for one pound. 10.80/6 = $1.80 per pound of apples.

Now, we want to find out how much 15 pounds of apples cost. Simply multiply 1.80 x 15 to find the price of 15 pounds of apples. 1.80 x 15 = $27 for 15 pounds of apples.

5 0
2 years ago
A social psychologist conducts an experiment and finds a statistically significant result. This means that the a. experiment is
coldgirl [10]

Considering that the hypothesis test found an statistically significant result, it is found that the correct option is:

c. probability of obtaining this finding by chance alone is less than some quantity.

<h3>What is an hypothesis test?</h3>
  • When a hypothesis test, there are two hypothesis, the null and the alternative hypothesis.
  • There is also a significance level.
  • If the probability of obtaining the finding by chance is less than the significant value, the result is statistically significant.

Hence, according to these bullet points, option C is correct.

You can learn more about hypothesis tests at brainly.com/question/16313918

7 0
2 years ago
3(12+b)=3x12+3xb
Vikentia [17]
This is the distributive property. You take what is outside of the parenthesis and DISTRIBUTE it inside the parenthesis.
4 0
3 years ago
Learning task 1: Conduct a survey of the favorite fruit of your classmates and/or friends 10 boys and 10 girls by sending a mess
Vlad [161]
Create random data for boys and girls ensuring that the data on each column in equal to 10 . Using that data you can answer the questions .

1. Type of favourite fruits
The rest you need the data for .
8 0
2 years ago
Consider this equation: {x-9 - 2x+2 = 1 Which is an equivalent equation after combining like terms? 8 X-11=1 3 -= -4 X-71 3 8 -7
grandymaker [24]

Answer:

  • B. -4/3x - 7 = 1

Step-by-step explanation:

  • 2/3x - 9 - 2x + 2 = 1
  • 2/3x - 2x - 7 = 1
  • 2/3x - 6/3x - 7 = 1
  • -4/3x - 7 = 1

Correct option is B

8 0
2 years ago
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