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Sati [7]
3 years ago
14

Find the length of side x.

Mathematics
1 answer:
dalvyx [7]3 years ago
8 0
<h3>Answer:   26.2</h3>

========================================================

Explanation:

Let's make A = 105 the given angle. The side opposite this is 'a'

The two given sides are b = 18 and c = 15

Use the law of cosines to find side 'a'

a^2 = b^2 + c^2 - 2*b*c*cos(A)

x^2 = 18^2 + 15^2 - 2*18*15*cos(105)

x^2 = 324 + 225 - 540*cos(105)

x^2 = 324 + 225 - 540*(-0.258819045102521 )

x^2 = 324 + 225 + 139.762284355361

x^2 = 688.762284355361

x = sqrt(688.762284355361)

x = 26.2442809837755

x = 26.2

Side note: make sure your calculator is in degree mode.

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Consider the line y=4/3x + 3
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Step-by-step explanation:

Consider the line y=4/3x + 3

-

Find the equation of the line that is perpendicular to this line and passes through the point (-9, -5)

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6 0
2 years ago
I need help on this
Tasya [4]

Answer:

TOTAL TAX IS: $19.25

TOTAL PRICE IS: $294.25

MONEY LEFT IS: $135.75

Step-by-step explanation:

First, you do a proportion:

?/275 = 7/100

the ?/275 represents how much money in $275

the 7/100 represents 7% (7 hundredths)

then you cross multiply:

275 x 7 = 1925

then you divide:

1925 divided by 100 = 19.25

<em><u>So $19.25 is the tax amount.</u></em>

<em><u></u></em>

To get the total price, you add:

Tax ($19.25) + Cost($275) = $294.25

<u><em>$294.25 is the total amount that Anna has to pay.</em></u>

<u><em></em></u>

To get what Anna has left over, you subtract:

Has($430) - Spend($294.25) = $135.75

<u><em>Anna has $135.75 left.</em></u>

<u><em></em></u>

I hope this helped you a lot!

Bri <3

3 0
3 years ago
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