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Komok [63]
4 years ago
11

For isosceles triangles with a = ????, show the law of cosines can be written as cos(????) = 1 − c2 / 2a2.

Mathematics
1 answer:
Law Incorporation [45]4 years ago
4 0

cant help when you put question marks!

please do this better!

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What is the area of<br> this figure?
n200080 [17]

Answer:

243 cm^2 + 108 cm^2 = 351 cm^2

Step-by-step explanation:

So, we have a rectangle and two triangles, we know all the sides or angles.

Rectangle: with 9 cm lenght 15cm + 12 cm = 27 cm

Formula: A=wl -> A=9*27 = 243 cm^2

Trianlge: A=ab/2

Angle 90°

Side A 12 cm

Side B 18 cm - 9 cm = 9 cm

A=ab/2=12·9/2=54 cm times 2 (for the opposite side) = 108 cm^2 = 351 cm^2

6 0
3 years ago
For the given central angle, determine the distance traveled along the unit circle from the point (1, 0). 360 degrees a. 6.28 un
Alekssandra [29.7K]

Answer:

The length of a 180° arc of a unit circle is π ≈ 3.14 units.

Step-by-step explanation:

Use your knowledge of the circumference of a circle (the length full around) and the fact that there are 360° in the central angle of a full circle. The distance around is proportional to the angle, so an arc of measure 180° will have a length equal to

... (180°/360°) × circumference = (1/2)×circumference

For a unit circle, the circumference is 2π (= π×diameter = 2π×radius). Half that length is π units.

4 0
3 years ago
suppose there are three consecutive intergers.if two times the first is added to twice the middle, the results is 69 minus the l
belka [17]
3 consecutive means
x, x+1, x+2
OR
x, x-1, x-2

the equation based on givens and first equation is:

2(x) + 2(x+1) = 69 - (x+2)
4x + 2 = 67 - x
5x = 65
x = 13

so the largest would be x+2 or 15
3 0
4 years ago
Question 8 of 10
Sliva [168]

Answer:

y = (-3/7)x + 2

Step-by-step explanation:

slope-intercept form is y = mx + b, where m = slope and b = y-intercept.

all you need to do is plug the values into the equation! :)

since your slope is (-3/7), plug that in for m.

y = mx + b ⇒ y = (-3/7)x + b

and since your y-intercept is 2, plug that in for b.

y = (-3/7)x + b ⇒ y = (-3/7)x + 2

therefore, the line's equation in slope-intercept form is y = (-3/7)x + 2.

<em>don't worry about the parentheses, i only put them in there to separate the 7 in -3/7 from x. i'm not good at putting equations in here on brainly lol i just wanted to make sure you didn't think that it was -3 over 7x.</em>

<em />

i hope this helps! have a lovely day <3

5 0
3 years ago
Read 2 more answers
One serving of oatmeal provides 16% of the fiber you need daily. You must get the remaining 21 grams of fiber from other sources
Marta_Voda [28]
<span>You should consume 25 grams of fiber daily.

The oatmeal represents 16% of the fiber.
The rest of the fiber (21 grams) is 84%.

If 21 grams = 84%, then 1 gram = 4%.
If 1 gram = 4%, then 25 grams = 100%.</span>
7 0
4 years ago
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