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horrorfan [7]
3 years ago
9

Which algebraic expression is equivalent to the expression below?

Mathematics
2 answers:
Sindrei [870]3 years ago
7 0

Answer:

the answer is 29x + 72, none of the following options does not have the answer

Alenkasestr [34]3 years ago
3 0

Answer:

A. 26x + 72

Step-by-step explanation:

  1. 5(6x + 8) + 4(8 - x) = 5 * (6x + 8) + 4 * (8 - x)
  2. 5 * (6x + 8) + 4 * (8 - x) = (5*6x + 5*8) + (4*8 -4*x)
  3. (5*6x + 5*8) + (4*8 - 4*x) = (30x+40) + (32 - 4x)
  4. (30x+40) + (32 - 4x) = 30x+40 + 32 - 4x
  5. 30x+40 + 32 - 4x = (30x - 4x) + (40 + 32)
  6. 26x + 725 * (6x + 8) + 4 * (8 - x)5 * (6x + 8) + 4 * (8 - x)5 * (6x + 8) + 4 * (8 - x)5 * (6x + 8) + 4 * (8 - x)
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Six times a number is greater than 20 more than that number. Which are the possible values of that number?
Neporo4naja [7]
I don't know how to make a 'greater than' sign.

6x is greater than x + 20
6x - x is greater than 20
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x is greater than 20 divided by 5
x is greater than 4

So, any number greater than 4 will work in this equation.
4 0
3 years ago
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Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite
yarga [219]

Answer:

<em>Rajan must use </em><em>0.75</em><em> liters of 5% hydrochloric acid solution and </em><em>0.25</em><em> liters of 45% hydrochloric acid solution.</em>

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

x+y=1

i.e x=1-y --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

0.05x+0.45y=1\times 0.15

i.e 5x+45y=15 -------------2

Putting value of x from equation 1 in equation 2,

\Rightarrow 5(1-y)+45y=15

\Rightarrow 5-5y+45y=15

\Rightarrow 5+40y=15

\Rightarrow 40y=15-5=10

\Rightarrow y=0.25

Putting the value of y in equation 1,

x=1-0.25=0.75

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters of 45% hydrochloric acid solution.

5 0
3 years ago
Which number has a value between -8.423 and -8.395?
pav-90 [236]

Answer:

Step-by-step explanation:

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You exercised 24 hours each month for a year. How many hours did you exercise by the end of the year? You may be able to do the
dedylja [7]

Answer:

288 hours.

Step-by-step explanation:

You exercise 24 hours in 1 month.

There are 12 months in one year.

24 * 12 = 288

Therefore, you exercised 288 hours in one year.

7 0
3 years ago
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1. What values of a, b, and c would you use in the quadratic formula for the following equation?
kiruha [24]
Answer: See each part below.

1) A, B, and C are the coefficients in order when it equals 0. Move over the 4 and you have 5, 9, -4 or Choice B.

3) If you graph the equation, it will be above the x-axis. Therefore, it has no roots. Choice D

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3 years ago
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