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3 years ago

Please Help!!!!!!!!!

Mathematics

2 answers:

Afina-wow [57]3 years ago

8 0

Answer:

you either need to multiply or add im on that question

Step-by-step explanation:

german3 years ago

3 0

Answer:

x = 115°

Step-by-step explanation:

Refer to attached picture

The small triangle on the top left has one angle 50° and the other two are same:

180° - x, as they for a straight angle with x

Sum of the angles in the triangle:

50° + 2(180° - x) = 180°
50 + 180° - 2x = 0
2x = 230°
x = 115°

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BlackZzzverrR [31]

Answer:

$\boxed{\sf a = 9 }$

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

$\sf\longrightarrow 3x - 2y +7=0$

$\sf\longrightarrow 6x +ay -18 = 0$

Step 1 : Convert the equations in slope intercept form of the line .

$\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}$

and ,

$\sf\longrightarrow y = -\dfrac{6x }{a}+\dfrac{18}{a}$

Step 2: Find the slope of the lines :-

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

$\sf\longrightarrow Slope_1 = \dfrac{3}{2}$

And the slope of the second line is ,

$\sf\longrightarrow Slope_2 =\dfrac{-6}{a}$

Step 3: Multiply the slopes :-

$\sf\longrightarrow \dfrac{3}{2}\times \dfrac{-6}{a}= -1$

Multiply ,

$\sf\longrightarrow \dfrac{-9}{a}= -1$

Multiply both sides by a ,

$\sf\longrightarrow (-1)a = -9$

Divide both sides by -1 ,

$\sf\longrightarrow \boxed{\blue{\sf a = 9 }}$

Hence the value of a is 9 .

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3 years ago

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ANTONII [103]

You have to divide 4 by 8 which = .5 and then u put the whole # before the decimal which will equal 4.5 , therefore knowing that 5 divided by 8 =0.625 does not help u write the decimal for 4 4/8 but the decimal for 4 4/8 is 4.5

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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