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klio [65]
3 years ago
14

Find the value of x (8x-1) (4x+7)

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

The value of x = 7

Step-by-step explanation:

Given the right triangle

  • Right angle = 90°
  • α = (4x+7)°
  • β =  (8x-1)°

  • We know that the sum of angles of a triangle is 180°.

so

Right angle + α + β =  180°

90° + 4x+7 + 8x-1 = 180

Group like terms

4x+8x+90+7-1=180

Add similar elements: :4x+8x=12x

12x+90+7-1=180

12x+96=180

12x=84

Divide both sides by 12

\frac{12x}{12}=\frac{84}{12}

x = 7

Therefore, the value of x = 7

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Solve x2 + 5x = −6. x = 5 and x = 1 x = −5 and x = −1 x = 3 and x = 2 x = −3 and x = −2
fomenos

Answer:

x = −3 and x = −2

Step-by-step explanation:

x^2 + 5x = −6

Add 6 to each side

x^2 + 5x+6 = −6+6

x^2 +5x+6 =0

Factor

What 2 number multiply to 6 and add to 5

3*2 =6

3+2 =5

(x+3)(x+2) =0

Using the zero product property

x+3 =0             x+2 =0

x+3-3=0-3         x+2-2=0-2

x=-3                       x=-2

8 0
3 years ago
HELP PLS!!! find x and y please show steps
loris [4]

Answer:

<h3>            x = 7 ,   y = 7√2</h3>

Step-by-step explanation:

The sum of measures of angles in triangle is 180°

so:

180° - 90° - 45° = 45°

two angles angles of the same measure, that means: x = 7

so:

      7^2+7^2=y^2\\\\y^2=7^2\cdot2\\\\y=\sqrt{7^2\cdot2}\\\\\bold{y=7\sqrt2}

4 0
3 years ago
The hands of a clock form the same angle at various times of the day. For example, the angle formed at 2:00 is congruent to the
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It is 2 inches long this is because of the length of the hands .
8 0
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310-49what does 310 - 49 equal
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Really,
310 - 49 = 261

Simple Calculator Calculation
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The ratio of boys to girls in Ella’s grade is 3 to 4. The ratio of boys to girls in Minh’s grade is 4 to 5. Each grade has a tot
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Answer:

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Step-by-step explanation:

I believe the answer is 12 boys. I hope this helps!

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