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KIM [24]
3 years ago
12

Help me pls ☹️☹️☹️☹️​

Mathematics
1 answer:
zheka24 [161]3 years ago
4 0

The slope of a line can be found by graph using rise over run (\frac{rise}{run}). Look at the image below to see what this mean.

Rise = vertical

run = horizontal

I took two clear points on the line as seen below and drew a right angle that formed a right triangle with the line.

Now let's count how many units the rise is (look at the second image). This is 3 units

rise = 3

Count the units of the run (third image). This is 1 unit

run = 1

Let's put these two numbers together in the \frac{rise}{run} form:

\frac{3}{1} or simplified = 3

However, this is not the final answer. This is a negative slope, meaning that when you look at the line from left to right (like when you are reading words) the line reaches from the top left corner to the bottom right corner. A positive slope (reading left to right) reaches from the bottom left corner to top right corner.

To signify that the slope is negative you simply add a negative sign to it:

-3

Let me know if you have any further questions.

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nikdorinn [45]

Answer:

Answer B and C

Step-by-step explanation:

Z is the center of the circle passing through H,G,J:

HZ=85=ZG=ZJ ==> ZJ=85 : B is true

HK=KG=136/2=68: C is true.

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Step-by-step explanation:

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3 0
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In △abc, ∠b is a right angle, ab⎯⎯⎯⎯⎯=1091⎯⎯⎯⎯√ab¯=1091 meters, bc⎯⎯⎯⎯⎯=30bc¯=30 meters, and ca⎯⎯⎯⎯⎯=100ca¯=100 meters. what is
Montano1993 [528]

Answer: \text{tan a}= \frac{3\sqrt{91} }{91}

Step-by-step explanation:

Since, in the triangle abc,

ab = 10√91 unit, bc = 30 unit, ca = 100 unit and m∠b = 90°

⇒ \text{tan a} = \frac{bc}{ab}

⇒ \text{tan a} = \frac{30}{10\sqrt{91}}

⇒ \text{tan a} =\frac{3}{\sqrt{91}}

⇒ \text{tan a} = \frac{3\times \sqrt{91}}{\sqrt{91}\times \sqrt{91}}

⇒ \text{tan a} = \frac{3\sqrt{91}}{91}

Which is the required value of tan(∠a).

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3 years ago
Solve by completing the square
natima [27]

Answer:

see explanation

Step-by-step explanation:

Given

x² + 10x + 14 = - 7 ( subtract 14 from both sides )

x² + 10x = - 21

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(5)x + 25 = - 21 + 25

(x + 5)² = 4 ( take the square root of both sides )

x + 5 = ± 2 ( subtract 5 from both sides )

x = - 5 ± 2

x = - 5 - 2 = - 7, or x = - 5 + 2 = - 3

-------------------------------------------------

The equation can also be solved by factoring

x² + 10x + 14 = - 7 ( add 7 to both sides )

x² + 10x + 21 = 0 ← in standard form

(x + 7)(x + 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x + 3 = 0 ⇒ x = - 3

5 0
4 years ago
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