All categories

3 years ago

Which equation has the correct sign on the product?

Mathematics

2 answers:

Gnesinka [82]3 years ago

8 0

B would be the correct answer

eimsori [14]3 years ago

7 0

Answer: b

Explanation: A and C are wrong because a negative times a positive is a negative
And D is wrong because a positive times a positive is a positive

You might be interested in

Which numbers are a distance of 3 units from 12 on a number line? A number line ranging from negative 5 to 17. Select each corre

spin [16.1K]

The distance between A and B is d = |B - A|

We have d = 3 and A = 12.

Substitute:

$|B-12|=3\iffB-12=3\ \vee\ B-12=-3\qquad|\text{add 12 to both sides}\\\\B=15\ \vee\ B=9$

<h3>Answer: 9 and 15.</h3>

4 0

3 years ago

Read 2 more answers

What is the approximate area of a circle with radius 6 cm?

Vlad1618 [11]

Answer:

the answer in 36cm squared

Step-by-step explanation:

pie r squared

4 0

2 years ago

A special type of password consists of 3 different letters of the alphabet, and the two different numbers, where each letter and

Phoenix [80]

Answer:

There can be 14,040,000 different passwords

Step-by-step explanation:

Number of permutations to order 3 letters and 2 numbers (total 5)

(AAANN, AANNA,AANAN,...)

= 5! / (3! 2!)

= 120 / (6*2)

= 10

For each permutation, the three distinct (English) letters can be arranged in

26!/(26-3)! = 26!/23! = 26*25*24 = 15600 ways

For each permutation, the two distinct digits can be arranged in

10!/(10-2)! = 10!/8! = 10*9 = 90 ways.

So the total number of distinct passwords is the product of all three permutations,

N = 10 * 15600 * 90 = 14,040,000

7 0

3 years ago

There are 52 cars in the movie theater parking lot. 12 more cars parked in the parking lot before the movie started but 3 cars l

kondaur [170]

Answer:

Step-by-step explanation:

52 + 12 = 64

64-3 that left is 62 cars in the parking lot

5 0

2 years ago

Read 2 more answers

1. What is the solution of n² – 49 = 0? (1 point)

maks197457 [2]

Answer:

1. $n=\pm7$

2. $x=\pm7i[tex]3.[tex]\pm 12x =a$

4. 22

Step-by-step explanation:

1. $n^2 - 49 = 0$

$n^2 =49$

$n= \sqrt{49}$

$n=\pm7$

2. $x^2+64 = 0$

$x^2 =-64$

$x= \sqrt{49}$

$x=\pm7i[tex]3. Area of square = [tex]a^{2}$

Where a is the side

We are given an area o square = $144x^{2}$

So, $144x^{2}=a^{2}$

$\sqrt{144x^{2}}=a$

$\pm 12x =a$

4. We are given that the solution of quadratic equation -9 and 9

So, equation becomes:

$(x+9)(x-9)=0$

$x^2- 81=0$

So, in the given equation $x^2 + z = 103$

z should be the number from which if we subtract 103 so we get 81

Substitute z = 22

$x^2 + 22 = 103$

$x^2 + 22 -103=0$

$x^2 -81=0$

Thus the value of z is 22

8 0

2 years ago

Read 2 more answers