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2 years ago

Find the slope of the given points (3,4) and (7,-4)

Mathematics

1 answer:

mr Goodwill [35]2 years ago

3 0

Answer:

Step-by-step explanation:

$\bold{slope\, (m)=\dfrac{change\ in\ Y}{change\ in\ X}=\dfrac{y_2-y_1}{x_2-x_1}}$

(3, 4) ⇒ x₁ = 3, y₁ = 4

(7, -4) ⇒ x₂ = 7, y₂ = -4

So the slope:

$\bold{m=\dfrac{-4-4}{7-3}=\dfrac{-8}4=-2}$

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Compute 3 + (1-2(3-5))

soldier1979 [14.2K]

3+(1-2(3-5))
3+(1-6+10)
3+(1-16)
3+(-15)
-12

4 0

2 years ago

For a haircut ang style Karl was charged $25.She wanted to give the stylist a 15% tip

Marina86 [1]

Answer:

$2.25

Step-by-step Explanation:

Divide 15% by 100% to get 0.15

0.15 x $15 = $2.25

The stylist must be happy.

4 0

2 years ago

Analyze the following situations that represent a relationship between x and y. Which situations can be modeled by the equation

SCORPION-xisa [38]

Answer:

I think it's A and D

Step-by-step explanation:

For option A, y would be the height or total growth, and x would be time or months and total height = 0.23 feet × 7.5 months

for option D, y would be the total amount of money spent and x would be the number of granola bars bought. total money spent = $0.23 × number of granola bars bought

Options B and C don't work because we don't know the initial values and an initial value would be represented in the equation.

In option E, 0.23 represents the total growth in 7 days, so it would be the total instead of the rate of change

8 0

2 years ago

(100) points!!!! Help please

inysia [295]

Answer:

$\displaystyle a_8=142,11\ mg$

Step-by-step explanation:

Geometric sequence

Each term in a geometric sequence can be computed as the previous term by a constant number called the common ratio. The formula to get the term n is

$\displaystyle a_n=a_1r^{n-1}$

where $a_1$ is the first term of the sequence

The problem describes Georgie took 275 mg of the medicine for her cold in the first hour and that in each subsequent hour, the amount of medicine in her body is 91% (0.91) of the amount from the previous hour. It can be written as

amount in hour n = amount in hour n-1 * 0.91

This information provides the necessary data to write the general term as

$\displaystyle a_n=275\ .\ 0.91^{n-1}$