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larisa [96]
3 years ago
12

(4x2 + 7x)(5x2 – 3x)Multiply​

Mathematics
1 answer:
pishuonlain [190]3 years ago
5 0

Answer:

- 21 {x}^{2}  + 46x + 80

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The populations P (in thousands) of a certain city from 2000 through 2007 can be modeled by P = 1674.7e^kt, where t represents t
Makovka662 [10]

Answer:

k = 0.02278

Step-by-step explanation:

Given that:

The population P = 1674.7e^kt

where;

t  represents the year,

if year 2000 represents t = 0

Then, the year 2007 represents = 7; &

year 2006 represents = 6

In 2006, population recorded in the city was about 1,920 thousand

Therefore;

1920 =  1674.7e^{(k\times 6)

Taking the logarithm of both sides, we get:

\mathtt{ In}(1920) = \mathtt{ In} ( 1674.7)+ 6k

7.560080465= 7.423389324 + 6k

7.560080465 -  7.423389324 = 6k

0.136691141 = 6k

k = 0.136691141/6

k ≅ 0.02278

5 0
3 years ago
4. Simplify the following.<br>3<br>a. 2-X5-:11<br>3<br>x5<br>5<br>6<br>7​
Ulleksa [173]

Answer:

<h2>1 \frac{1}{4}</h2>

Step-by-step explanation:

2 \frac{3}{7}  \times  5\frac{5}{6}   \div 11 \frac{1}{3}

Convert the mixed number to an improper fraction

\frac{17}{7}  \times  \frac{35}{6}  \div  \frac{34}{3}

To divide by a fraction, multiply the reciprocal of that fraction

\frac{17}{7} \times  \frac{35}{6}  \times  \frac{3}{34}

Reduce the number with the G.C.F 7

17 \times  \frac{5}{6}  \times  \frac{3}{34}

Reduce the numbers with the G.C.F 17

\frac{5}{6}  \times  \frac{3}{2}

Reduce the numbers with the G.C.F 3

\frac{5}{2}  \times  \frac{1}{2}

Multiply the fraction

\frac{5}{4}

In mixed fraction:

1 \frac{1}{4}

Hope this helps..

Good luck on your assignment...

4 0
3 years ago
Alexis is going to Vegas for the weekend! She decides to try her hand at a new game that Casino QuickCash is promoting. For this
vfiekz [6]

Answer:

$10.46

Step-by-step explanation:

Amount that can be won by Alexis ( xi ) = $0, $8 , $12

probability ( pi )

P( $0 ) = 13 / 52 = 1 / 4

P( $8 ) = 15 / 39   ( given that she wins this when an even number is drawn from three remaining decks )

P ( $12 ) = 1 - 15/39 = 24 / 39

<u>a) Alexis expected winnings per game </u>

= ∑ xi * pi = ( 0 * 1/4 ) +  ( 8 * 15/39 ) + ( 12 * 24 / 39 )

                = $0 + ( 120 / 39 ) + ( 288 / 39 )  = $10.46

6 0
3 years ago
QUICKKK?!!
Tju [1.3M]

Step-by-step explanation:

the line passing through the points (-7, - 7) and (4,-7).

Slope: (-7+7) /(4+7) = 0/11 = 0

this is a horizontal line

through the points (4,7) and (4, -6).

slope: (-6-7) /(4-4) = -13/0 = oo

this is a vertical line

5 0
3 years ago
What is the equation of the line of best fit for the following data? Round the slope and y-intercept of the line to three decima
Anuta_ua [19.1K]
If you put the points into a calculator using STAT EDIT and use LinReg, you get A.
4 0
3 years ago
Read 2 more answers
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