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NikAS [45]
3 years ago
9

The parallelogram pictured below has a perimeter of 129. Find the value of y.

Mathematics
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

y = 2.5

Step-by-step explanation:

2(17y + 6) + 2(10y - 9) = 129

34y + 12 + 20y - 18 = 129

54y - 6 = 129

54y = 135

y = 2.5

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PLEASE HELP!!!!! 2.) What is the perimeter of a polygon with vertices at (-3, 1), (5, 1), (-3, 4), (5, 4)? 30 points if you can
vredina [299]

Answer:

22 units

Step-by-step explanation:

Known Quantities:

  • AB = CD and AC = BD

Calculations:

  • AB = 8
  • AC = 3
  • CD = 8
  • BD = 3

Final Calculations:

  • perimeter = 2 x (3+8)
  • perimeter = 22

4 0
3 years ago
Two vectors beginning at the same vertex of a triangle are 〈2,3〉 and 〈-3,2〉. Choose the correct classification of the triangle.
Elena-2011 [213]

It will be right angle triangle.  The two vectors beginning at the same vertex of a triangle are <2,3> and <-3,2> is classified as right-angled triangle. It is classified as a right-angled triangle because the dot product of the vectors are 0.

5 0
3 years ago
SOMEONE PLEASE ANSWER ASAP FOR BRAINLIEST!!!!!
kaheart [24]

Answer:

 D     b = -2E +212

Step-by-step explanation:

The slope is given by -2 for every 1000 ft

The initial value is 212 degrees

We can use

y = mx+b  where m is the slope and b is the initial value

y = -2x +212

We are at an elevation of E thousand ft

Replace x with E

y = -2 *E +212

b is the boiling point at this elevation

We  replace y with b

b = -2E +212

7 0
3 years ago
Does this look right?
guajiro [1.7K]

Answer:

yeah

Step-by-step explanation:

its basically looks good, if your teacher gives a bad grade than idk, but looks about right :)

6 0
3 years ago
Find the length here
Vera_Pavlovna [14]

Answer:

The correct answer is

D) 66.35

The sine of the angle = the length of the opposite side. the length of the hypotenuse.

The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.

The tangent of the angle = the length of the opposite side. the length of the adjacent side.

So in shorthand notation:

sin = o/h   cos = a/h   tan = o/a

Often remembered by: soh cah toa

5 0
3 years ago
Read 2 more answers
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