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Vesnalui [34]
3 years ago
14

Solve for A Exact (no rounding, no calculator needed) 0 = A^2 + 13A + 36

Mathematics
1 answer:
marysya [2.9K]3 years ago
3 0

Answer:

-4 or -9

Step-by-step explanation:

-a^2-13a-36=0

(-a-4)(a+9)=0

-a-4=0

a+9=0

a= -4, -9

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If an = 2n - 3, then what is the fifth term of the sequence?
boyakko [2]

Answer:

7

Step-by-step explanation:

To find the fifth term in the sequence, plug in 5 for n.

a₅=2(5)-3

Then just solve

a₅=10-3

a₅=7

3 0
3 years ago
Read 2 more answers
What is the area of this composite figure?
anygoal [31]

Answer:

<em>Well, Your answer will be is </em><em>D. 100 feet squared. </em><em>Because, </em>

<em>1. Multiply 10x6 and 10x4. </em>

<em> </em>

<em>2. Add 60 and 40, the results from the previous step. </em>

<em> </em>

<em>3. You get 100, or 100 feet squared. </em><em>Good Luck!</em>

<em> </em>

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3 0
3 years ago
Read 2 more answers
Please can anyone help me?
hoa [83]
i’m pretty sure the answer would be 1) linear :D
6 0
3 years ago
Read 2 more answers
Consider 8x2 - 48x = -104.
ki77a [65]

Answer:

3+ 2\mathbf{i}

3- 2\mathbf{i}

Step-by-step explanation:

<u>Quadratic Equation Solving</u>

We have the equation:

8x^2-48x=-104

Divide by 8:

x^2-6x=-13

Now complete the squares so the left side is a perfect square of a binomial:

x^2-6x+9=-13+9=-4

Factoring the perfect square:

(x-3)^2=-4

Taking the square root:

x-3=\sqrt{-4}

The square root of a negative number is an imaginary number:

x-3=\pm 2\mathbf{i}

Solving for x:

x=3\pm 2\mathbf{i}

The solutions are:

3+ 2\mathbf{i}

3- 2\mathbf{i}

7 0
3 years ago
180 students in a tenth grade high school class take a survey about which video game consoles they own.
Fantom [35]

Answer:

P(A) = 44.44%

P(B) = 50%

P(B|A) = 37.5%

P(B|A) different from P(B).

A and B are independent.

Step-by-step explanation:

If we have a total of 180 students, and 80 of them have a Playstation, we have that P(A) = 80/180 = 0.4444 = 44.44%

If we have 90 students that have a Xbox, we have that P(B) = 90/180 = 0.5 = 50%

If we have 30 students that have both consoles, we have that P(A and B) = 30/180 = 0.1667 = 16.67%

To find P(B|A), we will find for a student that has an Xbox inside the group of students that has a Playstation, that is, we have 30 students in a total of 80 students, so P(B|A) = 30/80 = 0.375 = 37.5%

P(B|A) is different from P(B), the first is 37.5% and the second is 50%, so events A and B are independent events.

5 0
3 years ago
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