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vovikov84 [41]
3 years ago
13

Help me plssssss i don’t know how to do this

Mathematics
1 answer:
makkiz [27]3 years ago
7 0

Answer:

AC = \sqrt{15}

Step-by-step explanation:

Assuming you require AC

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

AC² + BC²= AB²

AC² + 7² = 8²

AC² + 49 = 64 ( subtract 49 from both sides )

AC² = 15 ( take square root of both sides )

AC = \sqrt{15} ≈ 3.87 ( to 2 dec. places )

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Help? Show work!
FinnZ [79.3K]

Answer:

m∠ABC = 68°

m∠DEF = 112°

Step-by-step explanation:

Supplementary angles are angles that add up to 180 degrees (they form a straight line).

If ∠ABC and ∠DEF are supplementary, that means that they add up to 180. We can write this in an equation:

  • (6x + 8) + (12x - 8) = 180

Combine like terms.

  • 18x = 180

Divide both sides by 18.

  • x = 10

Find the measure of each angle by substituting 10 for x into both expressions for the angles.

m∠ABC = (6x + 8)°

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m∠DEF = (12x - 8)°

  • 12(10) - 8 = 112°
5 0
3 years ago
Read 2 more answers
Determine the degree of the polynomial:<br><br> 7m^6n^5
polet [3.4K]

9514 1404 393

Answer:

  11

Step-by-step explanation:

The degree of the given monomial is the sum of the exponents of the variables.

  m has degree 6

  n has degree 5

The degree of the monomial is 6+5 = 11.

6 0
3 years ago
Someone please please help me ASAP <br> No links or files <br> I will give Brainly
lions [1.4K]

Answer:

1) 6

2) 9

3) improper.

Step-by-step explanation:

I hope this helps!

7 0
3 years ago
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What is the perimeter of the track, in meters?
Serjik [45]

Answer:

i think the answer is  (12*3.14 = 37.68cm is the circumference and 6^2*3.14 = 113.04cm2 is the area.)

Step-by-step explanation:

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3 years ago
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A taut clothesline extends between the points (–4.2, –6.4, 4.5) and (7.1, 2.2, 5.8), where the coordinates are in units of feet.
Citrus2011 [14]

Answer:

17.54 ft

Step-by-step explanation:

Moving along the line from (–4.2, –6.4, 4.5) to (7.1, 2.2, 5.8), x increases by 11.3, y by 8.6 and z by 10.3.

Applying the Pythagorean Theorem twice, we get

(length of clothesline) = √( 11.3² + 8.6² + 10.3²), or 17.54 ft.

7 0
3 years ago
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