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3 years ago

Will someone help please? only with 1-8

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

7 0

Answer:

1. x+2=2x+1 5. 8+x=3x

2-1=2x-x 8 =3x-x

1=x or x=1 8=2x

x=4

2. 2x+7=3x+4 6. 3x+6=6x

2x-3x=4-7 3x-6x=-6

-x=-3 -3x=-6

x=3 x=2

3. 2x-5=x-7. 7. 3x+3=x-5

2x-x= -7+5 3x-x= -5-3

x= -2 2x=-8

x=-4

4. x+6=3x-2 8. 2x+5=4x-1

x-3x= -2-6 2x-4x= -1-5

-2x=-8 -2x= -6

x=4 x=3

makvit [3.9K]3 years ago

5 0

1. x=1
2. x=3
3. x= -2
4. x = 4
5. x=4
6.x=2
7.x=-4
8.x=3

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Say the x = minutes taken to do the job. You can set up an equation like this to solve this.

$\frac{1}{15} x + \frac{1}{30} x = 1$

This is representative of the situation. The fractions each represent how much each person does in a minute, and when they're multiplied by x, that's how much of the project they get done based off of the minutes they work together on the job. Add the two together, and you get how much of the project is finished in x amount of time. Set it equal to 1, as you are looking for 100% completion.

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3 years ago

Keegan is priting and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total p

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Complete question is;

Keegan is printing and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total profits will be p(x) = -x³ + 4x² + x dollars, in thousands will be earned. How many t-shirts (rounded to the nearest whole number) should he print in order to make maximum profits? What will his profits rounded to the nearest whole dollar be if he prints that number of shirts?

Answer:

Number of t-shirts to make maximum profit = 2790 shirts

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Step-by-step explanation:

From the question, we are given that the profit function is;

p(x) = -x³ + 4x² + x

For the maximum value of the profit function,

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Since, p(x) = -x³ + 4x² + x

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Solving this using quadratic formula, the roots are;

x = -0.12 or 2.79

Also, (d²p/dx²) = -6x + 8

Now, let's put the roots of x into -6x + 8 and check for maximum value conditon;

at x = -0.12

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Will someone help please? only with 1-8​

Will someone help please? only with 1-8