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saveliy_v [14]
3 years ago
9

Find the slope of the lines through the points (2,-5) and (7,1)

Mathematics
1 answer:
ELEN [110]3 years ago
7 0

Answer:slope=1.2


Step-by-step explanation:

Slope=y-y/x-x

=1-(-5)/7-2

= 6/5

=1.2


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Pls, look at picture for the question.
brilliants [131]
-6.8 is the answer.
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2 years ago
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Find the angles in this quadilateral
ch4aika [34]

Answer:

Therefore a= 90°,b=54°, x=54°, y= 162°

Step-by-step explanation:

a=90°

a:b=5:3

5+3= 8

5/8 x A = 90

A is the sum of the angles of a and b divided in the ratio 5:3

5A/8 = 90

cross multiply

5A= 90 X8 = 720

5A=720

A= 720/5= 144°

b= 3/8 x 144 = 3x144/8 = 432/8 = 54

a= 90

b= 54

x:y is in the ratio of 1:3

the Sum of angles in a Quadrilateral is 360°

if the sum of a and b is 144°

then the reamining angles is 360-144= 216°

then x:y=1:3

1+3=4

x= 1/4 x 216= 54°

y= 3/4 x 216= 162°

Therefore a= 90°,b=54°, x=54°, y= 162°

we can see that b = x = 54°

7 0
3 years ago
What’s 2+2 because I need help
nikklg [1K]
4 is the answer because it’s just common sense
3 0
3 years ago
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cos (x/2) = -sqrt2/2 in (0,360) looking for two values ?? Can someone please help me I can’t seem to figure out how to solve thi
ValentinkaMS [17]

Answer:

135° and 225°

Step-by-step explanation:

basically you want to find the value of x between 0 and 360 in this equation

cos x/2 = -(√2)/2

assume x/2 as n, so

cos n = -(√2)/2

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then remember the quadrant system

0-90 1st quadrant, all is POSITIVE

90-180 2nd quadrant, only SIN has positive value

180 - 270 3rd quadrant, only TAN has positive value

270 -360 4th quadrant, only COS positive here.

so if you try to find negative value look into 2nd and 3rd quadrant that related 45° to x-axis (0°or 180°)

so the value of x is

180 - 45 = 135° (2nd quadrant) and

180 + 45° = 225° (3rd quadrant)

8 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Csqrt%7B25-10%5Csqrt%7B3%7D%2B3%20%7D" id="TexFormula1" title="\sqrt{25-10\sqrt{3}+3 }" alt=
Varvara68 [4.7K]
Here is your answer: )

6 0
2 years ago
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