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3 years ago

Find the slope of the line through the given points. d (3, 7) and (3, −8)

Mathematics

1 answer:

Romashka [77]3 years ago

6 0

Answer:

Undefined

Step-by-step explanation:

Use rise over run (y2 - y1) / (x2 - x1), where (x1, y1) and (y1, y2) are points on the line

Plug in the given points:

(y2 - y1) / (x2 - x1)

(-8 - 7) / (3 - 3)

-15/0

= undefined

The slope is undefined, because you cannot divide by 0.

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Find the slope that passes through (4,9) and (6,8)

Aliun [14]

Answer: Y=-1/2x +11

-1/2 is the slope and 11 is the y-intercept

3 0

3 years ago

Which is one of the solutions to the equation 2x^2 - x - 4 = 0

Alex73 [517]

Answer:

$x_{1}=\frac{1+\sqrt{33} }{4}\\x_{2}=\frac{1-\sqrt{33} }{4}$

Step-by-step explanation:

Using quadratic formula

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

we will have two solutions.

2x^2 - x - 4 = 0

So, a=2 b=-1 c=-4, we have:

$x_{1}=\frac{+1+\sqrt{-1^{2}-4*2*-4} }{2*2}\\\\x_{2}=\frac{+1-\sqrt{-1^{2}-4*2*-4} }{2*2}$

Finally, we have two solutions:

$x_{1}=\frac{1+\sqrt{33} }{4}\\\\x_{2}=\frac{1-\sqrt{33} }{4}$

5 0

3 years ago

A model is made of a car. The car is 3 meters long and the model is 3 centimeters long. What is the ratio of the length of the c

Brut [27]

Answer:

Step-by-step explanation:

a meter is 100 centimeters so the ratio of the real car to the model is 300 centimeters to 3 centimeters, or 100:1 so D

.---------. _

'-O------O--'

6 0

3 years ago

“angle A = 32, AC = 9, BC = x. Find x to two decimal places, don’t forget to round properly based on the third decimal place.” P

Liono4ka [1.6K]

Given:

Given that ABC is a right triangle.

The measure of ∠A is 32°.

The length of AC is 9 units.

The length of BC is x units.

We need to determine the value of x.

Value of x:

The value of x can be determined using the trigonometric ratio.

Thus, we have;

$sin \ \theta=\frac{opp}{hyp}$

where θ = A, the side opposite to A is BC and hypotenuse is AC.

Thus, we have;

$sin \ A=\frac{BC}{AC}$

Substituting BC = x and AC = 9, we get;

$sin \ 32=\frac{x}{9}$

Multiplying both sides by 9, we have;

$sin \ 32 \times 9=x$

$4.77=x$

Thus, the value of x is 4.77 units.

4 0

3 years ago

Rita’s class begins social studies at ten minutes before one in the afternoon. At what time does Rita’s class begin social studi

Komok [63]

Subtract 10 minutes from 1:00.

1:00 - 0:10 = 12:50

Since it's in the afternoon, the correct answer is 12:50 p.m

5 0

3 years ago