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OleMash [197]
3 years ago
5

Ab-ac=2 for a how do I do this

Mathematics
1 answer:
bazaltina [42]3 years ago
5 0
Solve for A

ab - ac = 2
First, you need to factorize
a(b - c) = 2
a= 2/(b -c)
 
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The radius of a cylinder gift box is box is 3X +1 inches the height of the gift box is twice the radius what is the surface area
Genrish500 [490]

Answer:

The surface area of the gift box is = A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}

Step-by-step explanation:

The surface area of the cylinder can be calculated using this formula:

A=2\pi rh+2\pi r^2

in this case, r is not a number, but rather an expression, which is r = 3x +1.

The height of the gift box is twice the radius, which is h = 2(3x+1)= 6x+2

To get our curved surface area, we carefully put the expressions for h and r into the equation.

A = 2 \times \frac{22}{7} \times (3x+1) \times (6x+2) + 2 \times \frac{22}{7} \times (3x+1)^{2}

A = \frac{44}{7} (3x+1) \times (6x +2) + \frac{44}{7} (9x^{2} + 6x +1)\\A =\frac{132}{7}x + \frac{44}{7} \times (6x+2)+ \frac{396}{7}x^{2}+\frac{246}{7}x +\frac{44}{7}

A = \frac{792}{7}x^{2} +\frac{264}{7}x +\frac{264}{7}x + \frac{88}{7} + \frac{396}{7}x^{2} + \frac{246}{7}x + \frac{44}{7}

A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}

The surface area of the gift box is = A = \frac{1188}{7}x^{2}+ \frac{774}{7}x +\frac{132}{7}

5 0
3 years ago
PLEASE ANSWER QUICKLY
jenyasd209 [6]

Answer:

It should be D because I have done that a couple days ago

6 0
2 years ago
Determine whether the underlined value is a parameter or a statistic.
hram777 [196]

Since the value is taken from a population, the value is a parameter.

<h3>Parameter and Statistic:</h3>

  • If the information is taken from a sample, it is called a statistic.
  • If the information is taken from a population, it is called a parameter.

For this problem, the students of the class are the population, as all students are considered for the calculator of the mean, hence the value is a parameter.

More can be learned about parameter and statistic at brainly.com/question/26118332

#SPJ1

4 0
1 year ago
Help ASAP!! Math problems
const2013 [10]

Answer:

7. C

8. D

Step-by-step explanation:

7. The interest rate is 8% or .08. You find that by solving I=Prt (interest=original amount*rate*time in years)

8. The discounted price would be $48 (80*(1-.40)) Then you multiply that 48 by .08 and add that amount to the $48.

5 0
3 years ago
25 points!
Brut [27]

Answer:

x = 4

Step-by-step explanation:

The steps we need to take:

1. Simplify left side.

2. Separate the variable and its coefficient from constants

3. Divide both sides by the coefficient to find "x

1) Simplify left side.

5(3x - 4) + 12 = 52

15x - 20 + 12 = 52

15x - 8 = 52

2) Separate the variable and its coefficient from constants by adding 8 to both sides.

15x - 8 + 8 = 52 + 8

15x = 60

3) Divide both sides by the coefficient to find x. (the coefficient is the number that comes before the variable)

15x / 15 = 60 / 15

x = 4

6 0
2 years ago
Read 2 more answers
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