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2 years ago

Which of the following are incorrect expressions for slope? Check all that apply.

Mathematics

1 answer:

Crazy boy [7]2 years ago

7 0

Pretty sure it’s B and D

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Write the equation of the line passing through the points (-4, 5) and (4, 1).

oksian1 [2.3K]

9514 1404 393

Answer:

y = -1/2x + 3

Step-by-step explanation:

It can work to start with the 2-point form of the equation for a line.

y = (y2 -y1)/(x2 -x1)(x -x1) +y1

y = (1 -5)/(4 -(-4))(x -(-4)) +5 . . . . . fill in point values

y = -4/8(x +4) +5 . . . . . . . . simplify a bit

y = -1/2x -2 +5 . . . . . .eliminate parentheses

y = -1/2x +3 . . . . collect terms

5 0

3 years ago

During the first decade of the century, the population of a certain city was 145,380 in 2000 and 219,135 in 2010. Find the expon

Likurg_2 [28]

Answer:

The exponential growth function is $P=145380e^{0.04103t}$

Step-by-step explanation:

Given: The population of a certain city was 145,380 in 2000 and 219,135 in 2010.

To find: exponential growth function that models the growth of the city

Solution:

The exponential growth function is given by $P=P_0 e^{kt}$

Here, P denotes total population after time t

$P_0$ denotes initial population

k denotes rate of growth

t denotes time

As $P(0)=145,380$ ,

$145380=P_0e^{0}\\145380=P_0\\P=145380e^{kt}$

As $P(10)=219135$

$219135=145380e^{10k}\\e^{10k}=\frac{219135}{145380}\\=1.507326\\k=\frac{1}{10}\ln (1.507326)\\=0.04103\\\Rightarrow P=145380e^{0.04103t}$

8 0

3 years ago

Mr. Phan fills a portion of his pool with water on Monday. Then on Tuesday, he fills the pool with water coming from a hose at a

Roman55 [17]

Answer: .6 ft. every hour

Step-by-step explanation: when you add the amount of feet added each hour you get .6 ft.

3 0

3 years ago

Simple the expression <br> ( 3k + 4 1/5) + 8 3/5

lesantik [10]

Answer:

$3k+12\frac{4}{5}$

Step-by-step explanation:

$(3k+12\frac{4}{5})$

Convert mixed numbers to improper fractions:

$a\frac{b}{c}=\frac{a*c+b}{c}$

$4\frac{1}{5}=\frac{4*5+1}{5}$

$=\frac{21}{5}$

$=(3k+\frac{21}{5} )+\frac{43}{5}$

Add the fractions

$\frac{21}{5}+\frac{43}{5}$

$\frac{21}{5} \frac{43}{5} =\frac{64}{5}$

$=3k+\frac{64}{5}$

Divide 64 by 5

$\frac{64}{5}$ $12.8 or 12\frac{4}{5}$

$=3k+12\frac{4}{5}$

7 0

2 years ago

A pure green beetle is crossed with a pure brown beetle. All of the offspring are green. Which explanation below, correctly expl

myrzilka [38]

Answer:

The green color gene is more dominant over the gene for brown color.

Step-by-step explanation:

Whichever gene is dominant is the one that will be applied to the organism.

8 0

3 years ago