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Andru [333]
3 years ago
8

Please help I'm struggling.​

Mathematics
1 answer:
Vilka [71]3 years ago
4 0

The value of d(-8) is d(-8) = -8

Step-by-step explanation:

We are given d(x)=x and we need to find d(-8)

To find d(-8) we will put -8 instead of x in the given equation.

Putting x=-8 we get:

d(x)=x\\d(-8)= -8

So, The value of d(-8) is d(-8) = -8

Keywords: Solving Equations

Learn more about Solving Equations at:

  • brainly.com/question/1563227
  • brainly.com/question/2403985
  • brainly.com/question/11229113

#learnwithBrainly

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Juan is making t-shirts to sell at a concert.
o-na [289]

Answer:

7 shirts

Step-by-step explanation:

The function for producing shirts is

f($) = 50 + 7.5(x), where x is the number of shirt

The function for selling shirts is

f($) = 15(x)

For there to be a profit, he must make more money selling the shirts than he spent on making the shirts

Therefore, 15(x) > 50 + 7.5(x)

15x > 50 + 7.5x

15x - 7.5x > 50

7.5x > 50

x > 6.67 shirts

To make a profit, Juan must sell at least 7 shirts

7 0
2 years ago
Pls help with math fast !!
Nutka1998 [239]

Answer:

1 would: You dont have to pay anything because 80% of 750 is $150 which you also have to deduct $150 so you dont pay anything.

2: 90% of $575 is $517 so 58 dollars would be deducted.

Hope this helps:)

7 0
3 years ago
Solve each equation
Fed [463]

Answer:

1. y = 7

2.  y = 6

3.  y = 7/2

4. y = 8

Step-by-step explanation:

I searched it up and found the answer.

7 0
2 years ago
Read 2 more answers
A ball is thrown in the air from a ledge. Its height in feet is represented by 
Genrish500 [490]

check the picture below.

\bf \stackrel{f(x)}{0}=-16(x^2-6x-7)\implies 0=x^2-6x-7 \\\\\\ 0=(x-7)(x+1)\implies x= \begin{cases} \boxed{7}\\ -1 \end{cases}

it cannot be -1, because is a seconds amount after moving.

8 0
3 years ago
Completing the square:
vichka [17]

Answer:

Step-by-step explanation:

Key to this method is remembering that

(a+b)^2 = a^2 + 2ab + b^2

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.

6/2 = 3, so add 3^2 = 9

x^2+6x+9 = (x+3)^2

So, c=9

Similarly, for the other two,

c = (\frac{-34}{2} )^2 = (-17)^2 = 289

You don't really have to worry about the sign, since squaring will always make it positive

(\frac{25}{13}) ^2 = \frac{625}{169}

7 0
3 years ago
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