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lord [1]
3 years ago
13

PLEASE HELP. WILL GIVE BRAINIEST AND 60 POINTS if you show work so I can understand these.

Mathematics
1 answer:
Greeley [361]3 years ago
5 0

Answer:

In #1, the slope of the line is 3

Step-by-step explanation:

To find the slope of any line, you need to use the points in the slope formula.

m(slope) = (y2 - y1)/(x2 - x1)

m = (5 - 2)/(0 - -1)

m = 3/1

m = 3

This means the slope is equal to 3.

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svp [43]

Answer:

#2 = 70

#3 = 40

using the Angle sum property and opposite angle

3 0
3 years ago
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Can someone ask me about this, which is algebra, please
krok68 [10]

Answer:

The correct answer is not shown in your picture. You must get a = 60.

Step-by-step explanation:

(1/2)a + (2/3)b = 50

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(1/2)a + (2/3)(30) = 50

(1/2)a + 20 = 50

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The correct answer is not shown in your picture. You must get a = 60.

5 0
3 years ago
Precalculus PLEASE HELP ME right answers only check all please
Alex_Xolod [135]

Given :

cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=-\frac{\sqrt{2}}{2}

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cos(x)cos(y) + sin(x)sin(y)=cos(x-y)

We use this property to simplify the left hand side

So  cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=cos(x - \frac{\pi }{7})

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we know ,

when cos(x) =-\frac{\sqrt{2}}{2}) then

x = \frac{3\pi }{4} , \frac{5\pi }{4}

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Add \frac{\pi }{7} on both sides

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Finally we add 2npi for general solution

So options C  and D  are correct


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