All categories

3 years ago

Select the correct answer.

Mathematics

2 answers:

Luda [366]3 years ago

7 0

Answer:

B) (X-3)

Step-by-step explanation:

1) X^2 + 2x - 15

2) find two numbers that when its added it gives you +2 and when multiplied it gives you -15. Those numbers are 5 and -3

3) now replace the +2x with 5x-3x

your equation should now look like this

x^2 + 5x -3x -15

4) now group x^2 + 5x and -3x-15

5) find whats in common between the two groups and factor it out

it should look like this x(x+5) and -3(x+5)

and two binomial factors are (x-3) & (x+5)

based off of the options the CORRECT ANSWER IS B) (X-3)!!

DON"T KNOW WHY YOU DELETED MY ANSWER AND YOU DID NOT ASK FOR WORK,YOU ASKED FOR AN ANSWER.

Maurinko [17]3 years ago

6 0

X^2 + 2x - 15
(x - 3) (x + 5)
B. (x - 3)

You might be interested in

Two vectors of lengths 4 and 6 have a dot product equal to 24. Which is true about the vectors?

GarryVolchara [31]

Answer:

Step-by-step explanation:

the dot product or scalar product is an algebraic operation that takes two equal-length sequences of numbers (usually coordinate vectors), and returns a single number. In Euclidean geometry , the dot product of the Cartesian coordinates of two vectors is widely used.

7 0

3 years ago

Read 2 more answers

Answer please i really need help

slava [35]

Answer:

it's b

Step-by-step explanation:

3 0

3 years ago

1. how many solutions does -3x + 32 - 7x = -2(5x + 10) have?

Eva8 [605]

Answer:

1.) none

2.) 46/7

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

Based on census data, the population of Freedonia is modeled by the function P ( t ) = 325 t^2 + 28547 people, where t represent

navik [9.2K]

Answer:

dP/dt = 650t = 650(2 ) = 1,300 people/year

The rate of increasing of population at the end of the year 1992 is 1,300 people/year

Step-by-step explanation:

Given;

Population function as;

P(t) =325 t^2 + 28547

The rate of change of the population dP/dt at any given time can be given as;

Rate = change in population/change in time = dP/dt

dP/dt = 2×325t = 650t

Therefore, after 1992;

t = 1992-1990 = 2years

dP/dt = 650t = 650(2 ) = 1,300 people/year

The rate of increasing of population at the end of the year 1992 is 1,300 people/year

5 0

4 years ago

an adult elephant that is 10ft tall casts a shadow that is 15ft long. find the length of the shadow that a 8ft telephone booth c

nadya68 [22]

Answer:

The length of the shadow the telephone booth is 12 ft.

Step-by-step explanation:

Given:

An adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

The length of the telephone booth is 8 ft.

Now, to find the length of the shadow the telephone booth casts.

Let the length of the shadow the telephone booth be $x.$

As given, an adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

So, 10 ft is equivalent to 15 ft.

Thus, 8 ft is equivalent to $x.$

Now, to get the length of the shadow of the booth we get cross multiplication method:

$\frac{10}{15} =\frac{8}{x}$

By cross multiplying we get:

$10x=120$

Dividing both sides by 10 we get:

$x=12.$

Therefore, the length of the shadow the telephone booth is 12 ft.

3 0

4 years ago