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slega [8]
3 years ago
10

Quick help needed, need someone to check my answer.

Mathematics
1 answer:
Verdich [7]3 years ago
4 0

The answer is B. 10 vertices because it all depends on the edges. You have to subtract the edges by faces/vertices to get your faces/vertices so 20-12 is 10 so you are correct

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Can someone help me with this question? step by step pls
hammer [34]

Answer:

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
2x^2-13x-24 factor the polynomial<br><br> Explain please
vovangra [49]

Answer:

(x - 8)(2x + 3)

Step-by-step explanation:

To factor a polynomial of the form

ax² + bx + c,

follow these steps:

1) Multiply ac together.

2) Find 2 factors of ac that add to b. Call these factors p and q.

3) Break up the middle term of the polynomial into px + qx.

4) Factor by grouping.

Now let's follow the steps above with your problem.

You are given the polynomial

2x² - 13x - 24,

so a = 2, b = -13, and c = -24

1) Find ac.ac is the product 2(-24) = -48

2) Now we need to find 2 factors of -48 that add to b, -13.

I know that 48 = 3 × 16, so if we use -16 and 3 for the two numbers, we have

-16 + 3 = -13

and -16 × 3 = -48.

3) Now we break up the middle term of the polynomial, -13x, into -16x + 3x.

The polynomial is now

2x² - 16x + 3x - 24

4) We factor the polynomial by grouping. To factor by grouping, you factor a common factor out of the first 2 terms and factor out a common factor out of the last two terms.

2x² - 16x + 3x - 24 =

= 2x(x - 8) + 3(x - 8)

We now see the common factor of x - 8, so we factor that out.

= (x - 8)(2x + 3)

Answer: (x - 8)(2x + 3)

8 0
2 years ago
Zachary purchased a computer for $1,200 on a payment plan. Four months after he purchased the computer, his balance was $780. Fi
DedPeter [7]

Answer:

y = 105x

Step-by-step explanation:

He loses $105 per month

8 0
2 years ago
Find the value of the discriminant. Then describe the number and type of roots
Paha777 [63]

Answer:

C

Step-by-step explanation:

Equation : -1x² - 14x + 2 = 0General Formula : b2-4ac=0a=-1, b= -14, c= 2Put the Value in General FormD = (-14)2 - 4 x -1 x 2D = 196--8D = 204

and the polynomial has 2 real roots

8 0
2 years ago
Renting a canoe costs $5.00 per hour for each adult and $2.50 per hour for each child. One adult and two children decide to rent
s344n2d4d5 [400]

Answer:

The equation is equal to c=10t

Step-by-step explanation:

Let

c-----> the cost in dollars

t----> the time in hours

we know that

One adult and two children

c=(1)5t+(2)2.5t\\ \\c=5t+5t\\ \\c=10t

3 0
2 years ago
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