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laiz [17]
3 years ago
6

Find the value of x in the triangle shown below.

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0

Answer:

x=8

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

6^2 + x^2 = 10^2

36 + x^2 = 100

Subtract 36 from each side

36-36 +x^2 = 100-36

x^2 = 64

Take the square root of each side

sqrt(x^2) = sqrt(64)

x = 8

Ulleksa [173]3 years ago
6 0

Answer:

x = 8

Step-by-step explanation:

According to Pythagorean Theorem

AB {}^{2}  + BC {}^{2}  = AC {}^{2}

here

AB = x \\ BC = 6 \\ AC = 10

Now,

{x}^{2}  +  {6}^{2}  = 10 {}^{2}  \\  {x}^{2}  =  {10}^{2}  -  {6}^{2}  \\ x {}^{2}  = 100 - 36 \\  {x}^{2}  = 64 \\ x =  \sqrt{64}  \\ x = 8

AB = x = 8

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It would be (-2,0). It touches the x-axis.
4 0
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You and your family go out to dinner and the food bill totaled $58.75 Calculate the tax at 4.5% and you plan to leave a 20% tip.
Ulleksa [173]
The tax on the bill was $2.64.

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4 years ago
Prove the identity cos(x-y)-cos(x+y)=2sinxsiny
tekilochka [14]

Answer:

see the procedure

Step-by-step explanation:

we know that

cos(X - Y) = cosX cosY + sinX sinY\\cos(X + Y) = cosX cosY - sinX sinY

so

cos(X - Y)-cos(X + Y)=cosX cosY + sinX sinY-(cosX cosY - sinX sinY)

cos(X - Y)-cos(X + Y)=cosX cosY + sinX sinY-cosX cosY + sinX sinY

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7 0
3 years ago
Find the slope given: (-2,-1) &amp; (-8, 11)<br> m =
vitfil [10]

Answer:

\displaystyle m=-2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Slope Formula: \displaystyle m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (-2, -1)

Point (-8, 11)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

  1. Substitute in points [Slope Formula]:                                                             \displaystyle m=\frac{11+1}{-8+2}
  2. [Fraction] Add:                                                                                                \displaystyle m=\frac{12}{-6}
  3. [Fraction] Divide:                                                                                             \displaystyle m=-2
7 0
3 years ago
Check my answers?
hichkok12 [17]

Answer:

3. D) (-8, -17)

2. D) (-15, -16)

1. B) (3, -4)

Step-by-step explanation:

3.

{y = 3x + 7

{y = x - 9

x - 9 = 3x + 7

-3x - 3x

____________

−2x - 9 = 7

+ 9 + 9

__________

−2x = 16

____ __

−2 −2

-8 = x[Plug this back into both equations above to get the y-coordinate of −17]; -17 = y

__________________________________________________________

2.

{−4x + 3y = 12

{−2x + 3y = −18

−½[−4x + 3y = 12]

{2x - 1½y = −6 >> New Equation

{−2x + 3y = −18

_______________

1½y = −24

____ ____

1½ 1½

-16 = y[Plug this back into both equations above to get the x-coordinate of −15]; -15 = x

__________________________________________________________

1.

{−10x - 3y = −18

{−7x - 8y = 11

−⅜[−7x - 8y = 11]

{−10x - 3y = −18

{2⅝x + 3y = −4⅛ >> New Equation

_________________

−7⅜x = −22⅛

______ _____

−7⅜ −7⅜

3 = x[Plug this back into both equations above to get the y-coordinate of −4]; -4 = y

I am joyous to assist you anytime.

5 0
4 years ago
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