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inysia [295]
3 years ago
14

Simplify 3 – b(7b + 2) + 3b – (11 – b).

Mathematics
2 answers:
lutik1710 [3]3 years ago
6 0

Answer: -7b2+2b-8

Step-by-step explanation:

I just did the assignment

bixtya [17]3 years ago
4 0
<span>Simplifying 7b + -4 + 3b + 11 + -1b = 0
 
Reorder the terms: -4 + 11 + 7b + 3b + -1b = 0
 
Combine like terms: -4 + 11 = 7 7 + 7b + 3b + -1b = 0
 
Combine like terms: 7b + 3b = 10b 7 + 10b + -1b = 0
 
Combine like terms: 10b + -1b = 9b 7 + 9b = 0
 
Solving 7 + 9b = 0
 
Solving for variable 'b'.
 
Move all terms containing b to the left, all other terms to the right.
 
Add '-7' to each side of the equation.
7 + -7 + 9b = 0 + -7
 
Combine like terms: 7 + -7 = 0 0 + 9b = 0 + -7 9b = 0 + -7
 
Combine like terms: 0 + -7 = -7 9b = -7
 
Divide each side by '9'. b = -0.7777777778 Simplifying b = -0.7777777778</span>
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A low-strength children’s/adult chewable aspirin tablet contains 81 mg of aspirin per tablet. How many tablets may be prepared f
Svetlanka [38]

Answer:

12,345 tablets may be prepared from 1 kg of aspirin.

Step-by-step explanation:

The problem states that low-strength children’s/adult chewable aspirin tablets contains 81 mg of aspirin per tablet. And asks how many tablets may be prepared from 1 kg of aspirin.

Since the problem measures the weight of a tablet in kg, the first step is the conversion of 81mg to kg.

Each kg has 1,000,000mg. So

1kg - 1,000,000mg

xkg - 81mg.

1,000,000x = 81

x = \frac{81}{1,000,000}

x = 0.000081kg

Each tablet generally contains 0.000081kg of aspirin. How many such tablets may be prepared from 1 kg of aspirin?

1 tablet - 0.000081kg

x tablets - 1kg

0.000081x = 1

x = \frac{1}{0.000081}

x = 12,345 tablets

12,345 tablets may be prepared from 1 kg of aspirin.

4 0
3 years ago
Monday<br> What time is 5 3/4 hours after<br> 11:32 pm?
Marina86 [1]

bearing in mind that the an hour has 15 + 15 + 15 + 15 = 60 minutes, so 15 minutes in 1/4 of an hour, thus 45 minutes is 3/4 of an hour.

now, from 11PM, if we add the 5 hours first, we'll be at 4AM, pass midnight of course.

now let's add the minutes, 32 and then 45, that gives us 77 minutes.

so the time will be 4AM plus 77 minutes, since 60 minutes is 1 hr, so 4AM plus 1 hr and 17 minutes, that'd be 5:17AM.

6 0
2 years ago
What is the slope of the line that passes through the points (1, 3) and (5, –2)?
Sergeu [11.5K]

m=-(5/4)

From left to right, (1,3) is first and then comes (5,-2). Always remember when finding slopes without equations, the rule is RISE over RUN, to the numerator and denominator, respectively.

The y value of the second coordinates becomes negative which is unlike the y value in the first coordinates, which means our slope is downward, meaning it has a negative sign in front.

In every slope, there’s a numerator, being the rise, and a denominator, being the run.

To find the rise, we must look at the y values. Starting at 3 going to -2 has a space of 5 units, making that our numerator.

To find the run, the first x value is 1 and the second is 5, making a space of 4, which is out denominator.

With these two numbers and the negative sign, we get -(5/4) as our slope.

7 0
2 years ago
The longest and shortest sides of a right triangle measure  39 centimeters and  15 centimeters , respectively what
Dmitrij [34]
Answer: 36 cm


Explanation: Use Pythagorean Theorem to solve the question: a^2+b^2=c^2
3 0
3 years ago
6x - 5 = -47 helpppp
BabaBlast [244]

Answer:

-7

Step-by-step explanation:

6x - 5 = -47           subtract 5 from both sides so the x is alone

6x = -42            divide by 6 so you can find what x equals

x= -7

4 0
3 years ago
Read 2 more answers
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