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diamong [38]
3 years ago
10

Whats the answer to -3a+8-8(7-2a)​

Mathematics
2 answers:
Serga [27]3 years ago
5 0

Answer:3.1875

Step-by-step explanation: Simplifying

-3 + 8 + -8(7 + -2a) = 0

-3 + 8 + (7 * -8 + -2a * -8) = 0

-3 + 8 + (-56 + 16a) = 0

Combine like terms: -3 + 8 = 5

5 + -56 + 16a = 0

Combine like terms: 5 + -56 = -51

-51 + 16a = 0

Solving

-51 + 16a = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '51' to each side of the equation.

-51 + 51 + 16a = 0 + 51

Combine like terms: -51 + 51 = 0

0 + 16a = 0 + 51

16a = 0 + 51

Combine like terms: 0 + 51 = 51

16a = 51

Divide each side by '16'.

a = 3.1875

Simplifying

a = 3.1875

xxTIMURxx [149]3 years ago
5 0
The answer is 13a - 48
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Two consecutive numbers have a sum of 346. What are the numbers?
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81,82,83

Step-by-step explanation:

What three consecutive integers have a sum of 246? Which means that the first number is 81, the second number is 81 + 1 and the third number is 81 + 2. Therefore, three consecutive integers that add up to 246 are 81, 82, and 83.

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2 years ago
The least common multiple of 3, 4, 6, and 8 is <br> A. 72.<br> B. 24.<br> C. 96.<br> D. 8.
Maslowich
The least common multiple of 3, 4, 6, and 8 is 24.

List the multiples out:

3: 3, 6, 9, 12, 15, 18, 21, 24
4: 4, 8, 12, 16, 20, 24
6: 6, 12, 18, 24
8: 8, 16, 24
5 0
3 years ago
Read 2 more answers
What is the simplified value of the expression below?<br> 1/3 divided by 2/3
lidiya [134]

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Step-by-step explanation:

5 0
2 years ago
Plz help I don't understand this question.
ladessa [460]
<h3>Answer:  12</h3>

===========================================================

Explanation:

  • j = number of jerseys ordered
  • c = total cost in dollars

For company X, the equation is c = 10j + 115 where the 10j is the cost of buying all the jerseys (j of them). Then we tack on the flat fee of $115

The equation for company Y is c = 20j for similar reasoning as the previous company, but now each jersey costs $20. We don't add on anything else because there isn't an extra flat fee.

----------------

We have this system

\begin{cases}c = 10j+115\\c = 20j\end{cases}

which are the equations for company X and company Y in that order.

Both equations have 'c' on the left side. So we can equate the right hand sides and solve for j

20j = 10j+115

20j-10j = 115

10j = 115

j = 115/10

j = 11.50

Recall that j is the number of jerseys. It's not possible to order half a jersey, so we have to round to the nearest whole number. The question is: which way? We're right at the midpoint between j = 11 and j = 12. Let's check both values of j to see what the costs are for each company.

  • j = 11 for company X leads to c = 10j+115 = 10*11+115 = 225
  • j = 11 for company Y leads to c = 20j = 20*11 = 220

Company Y is the cheaper option if you bought 11 jerseys. But we want to know when company X is the better deal. Let's try j = 12

  • j = 12 for company X leads to c = 10j+115 = 10*12+115 = 235
  • j = 12 for company Y leads to c = 20j = 20*12 = 240

This time company X is the winner in terms of the best deal (aka cheapest cost). If j gets any bigger, then company X is still the winner. So we can see that the minimum order must be 12 jerseys if we want company X to be the cheapest option.

6 0
3 years ago
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