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Mumz [18]
3 years ago
12

Suppose a lab— PLEASE HELP

Mathematics
1 answer:
pshichka [43]3 years ago
7 0

Answer:

Hi there!

The correct answer will be A. c+d = 400

                                                .2c + .5d = .39

           

Step-by-step explanation:

Since c and d represent the number of liters, and the lab requires 400 liters of solutions it make sense to have number of liters add up to 400.

Next, since they want it 39% acid solution, it makes sense to have percentages to add up to another percentage.

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The scatterplot shows the relationship between the number of slices of pizza eaten by each member of a football team (x) and the
ivolga24 [154]

Answer:

5.31

Step-by-step explanation:

Given the regression line equation, y = 10 - 0.67x, where,

x = number of slices of pizza eaten

y = number of laps run immediately

Number of laps run by a player who ate 7 slices of pizza can be predicted by plugging in x = 7 into the regression line equation to find y:

y = 10 - 0.67x

y = 10 - 0.67(7)

y = 10 - 4.69

y = 5.31

5 0
3 years ago
Can anyone help???
svp [43]

Answer:

-8x+21

Step-by-step explanation:

Use the distributive property.

8 0
3 years ago
Question
Kay [80]

Answer:

f(x)=2(x-2)(x^2+64)

Step-by-step explanation:

A standard polynomial in factored form is given by:

f(x)=a(x-p)(x-q)...

Where <em>p</em> and <em>q</em> are the zeros.

We want to find a third-degree polynomial with zeros <em>x</em> = 2 and <em>x </em>= -8i and equals 320 when <em>x </em>= 4.

First, by the Complex Root Theorem, if <em>x</em> = -8i is a root, then <em>x </em>= 8i must also be a root.

Therefore, we acquire:

f(x)=a(x-(2))(x-(-8i))(x-(8i))

Simplify:

f(x)=a(x-2)(x+8i)(x-8i)

Expand the second and third factors:

=(x+8i)x+(x+8i)(-8i)\\\\=(x^2+8ix)+(-8ix-64i^2)\\\\=(x^2)+(8ix-8ix)+(-64i^2)\\\\=x^2-64(-1)\\\\ =x^2+64

Hence, our function is now:

f(x)=a(x-2)(x^2+64)

It equals 320 when <em>x</em> = 4. Therefore:

320=a(4-2)(4^2+64)

Solve for <em>a</em>. Evaluate:

320=(2)(80)a

So:

320=160a\Rightarrow a=2

Our third-degree polynomial equation is:

f(x)=2(x-2)(x^2+64)

7 0
3 years ago
Please answer quickly :’)
Virty [35]

check below for labels,

  • Full line is referred as diameter.

  • Half of diameter or from centre touching the circle is called radius.

5 0
3 years ago
jack has a rectangular patio with a length that is one foot less than twice its width. his neighbor Ron’s patio has the same wid
Mekhanik [1.2K]

Answer:

246

Step-by-step explanation:

3 0
4 years ago
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