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slamgirl [31]
3 years ago
9

HELP PLZ 7k + 4s = 20 -8k + 2s = 10 What is the value of k?

Mathematics
1 answer:
Finger [1]3 years ago
8 0
Divide 20 by 4=5
then 5 by 7=5/7

k=5/7
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Find the equation of the line specified. The line passes through the points ( 5, 2) and ( 6, 4) a. y = 2x - 8 c. y = 2x + 12 b.
o-na [289]
<span>( 5, 2) and ( 6, 4)
slope m = (4-2)/(6-5) = 2

y = mx + b
b = y - mx
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so now you have slope m = 2 and y intercept b = -8

equation
y = 2x - 8

answer
</span><span>a. y = 2x - 8</span>
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3 years ago
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Suppose xy &gt; 0. Describe the points whose coordinates are solutions to the inequality.
Elan Coil [88]

The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

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<h3>Which points are solutions of the inequality?</h3>

We want to find points of the form (x, y) that are solutions of the inequality:

x*y > 0

Clearly x and y must be different than zero.

So, for example if x = -1, y can be any negative number, for example y= -3

x*y > 0

(-1)*(-3) > 0

3 > 0

This is true.

Now if x  = 1, y must be positive. LEt's take y = 103, then:

x*y > 0

1*103 > 0

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Then we have 3 conditions:

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The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

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4 0
2 years ago
Given: AB ∥ DC , m CB =62°, m∠DAB=104° Find: m∠DEA, m∠ADB
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Answer:

Step-by-step explanation:

sum of angles of parallelogram=360 degrees

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Angle D=180-104=76 degrees (angle ADB)

Angle B=60 degrees

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3 years ago
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ch4aika [34]

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have an F- on math call for help!

Step-by-step explanation:

5 0
3 years ago
You are given a vector in the xy plane that has a magnitude of 87. 0 units and a y component of -66. 0 units. Determine the dire
Natalka [10]

You are given a vector in the XY plane that has a magnitude of 87. 0 units and a y component of -66. 0 units. The direction of the vector V is;

<h3>How to know the direction of a vector?</h3>

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Where A is the magnitude of the resultant

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y is the value of the y-component

We are given;

Magnitude of vector = 84 units

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Thus,

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Since it points entirely to the negative x-axis, then the angle is;

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2 years ago
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