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3 years ago

On day 4 the 1rst 2 thx

Mathematics

2 answers:

ladessa [460]3 years ago

8 0

1. C
2. 3, because I used a proportion table

Svet_ta [14]3 years ago

3 0

To the first one, the answer is B. The second one 75 books are fictional

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Solve the polynomial equation x3 + 7x2 − 16x −112 = 0 and select the correct answer below.

prohojiy [21]

X^3 + 7*x^2 + -16*x-112
=(x + 4)*(x + 7)*(x - 4)

7 0

3 years ago

Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by p = 130e0.0205t,wh

svetoff [14.1K]

Answer: a) 236,000.

b) 2021

Step-by-step explanation:

Given : Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by $p = 130e^{0.0205t}$ (1)

where t = 0 corresponds to 1980.

Then , for 2009

t= 2009-1980=29

a. ⇒The population of Phoenix in 2009 = $p = 130e^{0.0205(29)}$

$p = 130e^{0.5945}$

$p =130(1.81212465608)=235.57620529\approx236$

Hence, the population of Orlando in 2009 was about 236,000.

b) Substitute p= 300 in (1) , we get

$300 = 130e^{0.0205t}$

$2.3077= e^{0.0205t}$ (Divide both sides by 130)

Taking Natural log on both sides,

$\ln(2.3077) = 0.0205t\\\\\Rightarrow\ t=\dfrac{\ln(2.3077)}{0.0205}$

$t=\dfrac{0.836251357528}{0.0205}=40.7927491477\approx41$

Hence, The year Orlando will have a population of 300,000 =1980+41 =2021

6 0

3 years ago

Which of the following pieces are congruent?

posledela

Answer:

The horizontal segment of E and vertical segments of M.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

I need answers for 1 and 2

Snowcat [4.5K]

1. Slope 3/4, through (4,-1)

y = 3/4 x + b

-1 = 3/4(4) + b

-1 = 3 + b

-1 - 3 = b

-4 = b

y = 3/4 x - 4

2. Slope = - 1/2, through (3,0)

y = -1/2 x + b

0 = -1/2(3) + b

0 = -1.5 + b

0 + 1.5 = b

1.5 = b

y = -1/2 x + 1.5

8 0

3 years ago

Can somebody help please and thank you :)

Marizza181 [45]

I can help soo first u need to read the question and see what’s its telling u then u got to see what to did like division adding and the other stuff but u are going to divide

4 0

3 years ago