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2 years ago

5. Factor: x² - 4x-21

Mathematics

2 answers:

tekilochka [14]2 years ago

8 0

Answer:

(x - 7) (x + 3)

Step-by-step explanation:

masha68 [24]2 years ago

5 0

The answer is x² - 25

first you have to subtract the x² - 4x-21. And you get this x² - 25

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The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 6 to 5. Ir there were 3

Gemiola [76]

Answer:

The total number of votes was $7,007$

Step-by-step explanation:

Let

x -----> the number of yes votes

y -----> the number of no votes

we know that

$\frac{x}{y} =\frac{6}{5}$

isolate variable y

$y=\frac{5}{6}x$ -----> equation A

$x=3,822$ -----> equation B

Substitute equation B in equation A and solve for y

$y=\frac{5}{6}(3,822)=3,185$

therefore

To find out the total number of votes sum the number of yes votes plus the number of no votes

$3,822+3,185=7,007$

3 0

3 years ago

Read 2 more answers

Tresset [83]

Answer:

pretty sure its B

Step-by-step explanation:

5 0

3 years ago

Vince helped serve the hot dogs at the first night’s camp.He served 2 each to 118 peaple and 1 each to 87 people How many dogs d

givi [52]

There are 323 hotdogs total.

7 0

3 years ago

Would you please help me with this quiz answer, I will really appreciate if you do.

laila [671]

Answer:

a . domain 5,0,7,9,0

range -2,-2,-4,8,2

b. domain 2,4,8,9

range 1,2,4,11

Step-by-step explanation:

<h3>a is not a function</h3>

because function is a relationship in which each domain element occurs only once.

<h3>b is a function</h3>

6 0

3 years ago

At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equatio

andriy [413]

The correct format of the question is

At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equation below, where t represents the number of years since the end of 2006 and P represents the number of people. $P = 400 ( 1.2 )^ t$ Based on this model, approximately what was the increase in the population of Riverside at the end of 2009 compared to the end of 2006?

(A) 291

(B) 691

(D) 1440

Answer:

The increase in the population at the end of 2009 is 291 people

Step-by-step explanation:

We are given the equation as $P = 400 ( 1.2 )^ t$

where

P = No of People

t= No of Years

it is given that in the year 2006 the population is 400

this will only happen when we take t= 0

so for

Year value of t

2006- t = 0

2007- t = 1

2008- t = 2

2009 t = 3

No of people in 2009 will be

$P = 400(1.2)^3$

= 400*1.728

P = 691.2

Since the equation represents no of people so it can't be in decimals, Therefore the population will be 691

Increase = P(2009) - P(2006)

= 691 - 400

= 291

The increase in the population at the end of 2009 is 291 people.

4 0

3 years ago