All categories

3 years ago

Find the slope using thetwo points (9, 3) and (15, -1)

Mathematics

1 answer:

Nutka1998 [239]3 years ago

7 0

Answer:

-2/3

Step-by-step explanation:

The formula for slope is y2-y1/x2-x1. Plug in those values to get -1-3/15-9. Doing the math then gets us -4/6. -4/6 simplifies to 2/3

You might be interested in

Please solve the equation by factorising

Kobotan [32]

Answer:

X= -2/3, 4

Step-by-step explanation:

5 0

3 years ago

11 8/7 +3 5/1 − ? = 15 PLZ I NEED IT FASTER THAN FAST

lukranit [14]

Answer:

5 1/7 or 36/7

Step-by-step explanation:

11 8/7+3 5/1-x=15

12 1/7+8-x=15

12 1/7+8-15=x

20 1/7-15=x

5 1/7=x

8 0

3 years ago

What is 34.5 divided by 4

diamong [38]

34.5 / 4 = 8.625

8.625

7 0

3 years ago

Use the alternative form of the dot product to find u · v.

vodka [1.7K]

Answer:

Step-by-step explanation:

u = 45

v = 30

Angle between them, θ = 5π / 6 = 150°

(a) The formula for the dot product is given by

$\overrightarrow{u}.\overrightarrow{v}= u v Cos\theta$

$\overrightarrow{u}.\overrightarrow{v}= 45 \times 30 \times Cos150$

$\overrightarrow{u}.\overrightarrow{v}= -1169.13$

(b) $\overrightarrow{u}=Cos\frac{\pi }{3}\widehat{i}+Sin\frac{\pi }{3}\widehat{j}$

$\overrightarrow{u}=0.5\widehat{i}+0.866\widehat{j}$

$\overrightarrow{v}=Cos\frac{2\pi }{3}\widehat{i}+Sin\frac{2\pi }{3}\widehat{j}$

$\overrightarrow{v}=-0.707\widehat{i}+0.707\widehat{j}$

Let the angle between them is θ

The formula in terms of the dot product is given by

$Cos\theta =\frac{\overrightarrow{u}.\overrightarrow{v}}{u v}$

$u=\sqrt{0.5^{2}+0.866^{2}}=1$

$v=\sqrt{-0.707^{2}+0.707^{2}}=1$

$Cos\theta =\frac{0.5 \times (-0.707) + 0.866 \times 0.707)}{1\times 1}$

$Cos\theta=0.2587$

θ = 75°

$u=\sqrt{1^{2}+4^{2}+8^{2}}=9$

$Cos\alpha =\frac{1}{9}$

$Cos\beta =\frac{4}{9}$

$Cos\gamma =\frac{8}{9}$

7 0

4 years ago

Helppppppppppp plzzzzzzzzz

Ierofanga [76]

Answer:

6,250

Step-by-step explanation:

(4.3+8.2)500

12.5(500)

6,250

Hope this helps! Please mark brainliest :)

7 0

3 years ago

Find the slope using thetwo points (9, 3) and (15, -1)​

Find the slope using thetwo points (9, 3) and (15, -1)