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3 years ago

What is the slope of the line that passes through the points(7,-9) and (15,-29)?

Mathematics

1 answer:

Alex Ar [27]3 years ago

3 0

(Y-Y1)/(X-X1)
(-9-(-29))/(7-15)
20/-8
-2 1/2
The slope is -2 1/2

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If p is true and q is false, what is the truth value of p and q? a. true b. false c. 0 d. 1

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Please simplify y(-16+2x)= Thanks

MAVERICK [17]

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-16y+2yx

Step-by-step explanation:

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3 years ago

Reasoning point F lies on EG and point M lies on EN. If F,E, and M are collinear, what must be true of these rays.

almond37 [142]

This means that all of the points are co-linear. This is because if EG is a segment that contains F, and EN is a segment that contains M, then there can be two different segments. However, for a point F on the first segment and a point M on a second segment be in the same line as an end point of one of the segments, the segments have to be co-linear. They overlap.

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3 years ago

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On a deposit of $100 at a simple interest rate of 20%, How many years would it take to double your money?

borishaifa [10]

Answer:

5 years

Step-by-step explanation:

Formula to calculate simple interest

Where:

A = Future amount = 2(100)

P = Principal Amount = 100

r = Rate of Interest per year in decimal

r = R/100 = 20/100 = 0.2

To find,

t = Time Period

Put value in the formula

200 = 100(1 + 0.2t)

200/100 = (1 + 0.2t)

2 = (1 + 0.2t)

2 - 1 = 0.2t

1 = 0.2t

1/0.2 = t

t = 5 years

So, it will take 5 years to double money.

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3 years ago

a motorboat moves across a lake as a constant speed. when it begins, it is 50 km from the shore. after 9 minutes, it is 14 km fr

nikdorinn [45]

Answer:

The function describes the motorboat's distance from the shore $y=-4x+50$

Step-by-step explanation:

A motorboat moves across a lake as a constant speed. when it begins, it is 50 km from the shore

After 9 minutes, it is 14 km from the shore.

So, rate of change = $\frac{\text{Final distance}-\text{Initial distance}}{time}=\frac{14-50}{9}=-4$

Negative sign shows that there is decrease in distance per minute

The rate of change of distance is 4 km / minutes

General equation : y = mx+c

Where m is the slope and c is the constant

Substitute the values in the equation :

y=-4x+50

Where y is the final distance and x is the minutes

So, Option C is true

Hence The function describes the motorboat's distance from the shore $y=-4x+50$

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4 years ago