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zavuch27 [327]
3 years ago
6

Translate the following into an algebraic expression:

Mathematics
1 answer:
natka813 [3]3 years ago
4 0

For this case we have the following variables:

x: number of hours that it takes Mr. David to complete a job working alone.

y: number of hours it takes Mr. Ludwing to complete a job working alone.

k: number of hours it takes for both of them to do a job working together.

We now write the equation that models the problem.

To do this, we must add the work rate per hour of each and equal to the rate of work per hour of both.

\frac{1}{x} +\frac{1}{y} =\frac{1}{k}

We have then:

Answer:

The algebraic expression that models the problem is:

\frac{1}{x} +\frac{1}{y} =\frac{1}{k}

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-2(7 + y) ≥ -8(y + 1)<br> Write the solution to each inequality.
zhenek [66]

Answer:

y > 1

Step-by-step explanation:

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3 years ago
The sixth grade is raising money for a camping trip that costs $2,500. So far they have raised 70% of the cost. How much have th
ratelena [41]

Answer:

Step-by-step explanation:

They have raised $1,750 so far. 70% of $2,500 is $1,750

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3 years ago
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Do you know works at a dinner she earn six dollars each hour plus tips in one week she worked 37 hours a week and earned 43 tips
lukranit [14]

Answer:

265

Step-by-step explanation:

The computation of the amount that should be make out together is shown below:

Let us assume the number of hours be x

And, the total money earned be y

Now the equation would be

y = 6x  + 43

= 6(37) + 43

= 265

5 0
2 years ago
HELP ME FIND THE SLOPE
Tomtit [17]

Answer:

m=\frac{-5}{2}

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Choose any 2 points from the chart.</em>

Point (-6, 11)

Point (-2, 1)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{1-11}{-2+6}
  2. Subtract/Add:               m=\frac{-10}{4}
  3. Simplify:                        m=\frac{-5}{2}
4 0
3 years ago
8th grade math simple help
Kazeer [188]

Answer:

1) x = 30

2) x = 11.6

Step-by-step explanation:

1) 2x = 4x - 60   (vertical angles are equal)

subtract 4x from each side of the equation:

-2x = - 60

divide both sides by -2:

x = 30

2) 7x + 16 + 3x + 48 = 180°   (supplementary angles add up to 180°)

combine like terms:

10x + 64 = 180

subtract 64 from both sides of the equation:

10x = 116

divide both sides by 10:

x = 11.6

3 0
2 years ago
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