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LekaFEV [45]
3 years ago
14

Find the magnitude and direction of CD for the given coordinates. Round answers to the nearest tenth.

Mathematics
1 answer:
wlad13 [49]3 years ago
6 0
CD = <8-1, -9-(-4)> = <7, -5>
|CD|= \sqrt{7^2+(-5)^2} = \sqrt{74} = 8.6
\theta=\tan^{-1} (\frac{-5}{7})= -35.5\°
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Are the expressions -0.5(3x + 5) and<br> -1.5x + 2.5 equivalent? Explain why or why not.
Sedbober [7]

Answer:

No, because the first equation equals -1.5x + 2.5 when simplified, but when the second equation is simplified it equals 1

7 0
3 years ago
The formula for the area of a square is A=s^2, where s is the length of one side. Rearrange the formula to solve for s
mihalych1998 [28]
A = s^2 \\ s =  \sqrt{A}
4 0
3 years ago
Help please thanks quick
andrew11 [14]

Answer:

The last option has another result than the others.

Step-by-step explanation:

The first option answer is 7/2

The second option answer is 7/2

The third option answer is 7/2

The last option answer is 2/7

Hope it will help :)

6 0
3 years ago
Find the first five terms of the sequence in which a1 = 6 and an = –3an – 1 – 12, if n ≥ 2.
maxonik [38]

Answer:

Step-by-step explanation:

so whats the answer?

5 0
3 years ago
8х + 5у = -7<br> — 7х + бу = — 4
Levart [38]

Answer: x = -0.2651 and y = -0.9759

Step-by-step explanation:

Solution by substitution method

8x+5y= -7

-7x+6y= -4 = 7x-6y=4

Suppose,

8x+5y=-7→(1)

7x-6y=4→(2)

Taking equation (1), we have

8x+5y= -7

⇒8x= -5y -7

⇒x= -5y-7 / 8 →(3)

Putting x= -5y-7 / 8

in equation (2), we get 7x-6y=4

7(-5y-7/8)-6y=4

⇒-35y-49-48y=32

⇒-83y-49=32

⇒-83y=32+49

⇒-83y=81

⇒y= 81 / -83

⇒y= -0.9759→(4)

Now, Putting y= -0.9759 in equation (3), we get

x= -5y-7

x= -5(-0.9759)-7/8

⇒x= 4.8795-7/8

⇒x= -2.1205/8

⇒x= -0.2651

∴x= -0.2651 and y = -0.9759

7 0
3 years ago
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