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balandron [24]
3 years ago
7

The length of a rectangle is four times its width. If the area of the rectangle is 100 ft², find its perimeter

Mathematics
1 answer:
olga2289 [7]3 years ago
3 0

Answer:

suck dickpula

asda

<h2>Step-by-step explanation:</h2>

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Cuánto es –a +28=14???
eimsori [14]

Answer:

a=14

Step-by-step explanation:

-a+28=14

So -a=-14

so a=14

6 0
2 years ago
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5) In the figure, triangle ABC is a right triangle at B. If CD = 15, find BC to the nearest tenth.
ycow [4]

Answer:

BC ≈ 4.0

Step-by-step explanation:

∠ DCA = 180° - 70° = 110° ( adjacent angles )

∠ DAC = 180° - (30 + 110)° ← sum of angles in triangle

∠ DAC = 180° - 140° = 40°

Using the Sine rule in Δ ACD to find common side AC

\frac{AC}{sin30} = \frac{15}{sin40} ( cross- multiply )

AC × sin40° = 15 × sin30° ( divide both sides by sin40° )

AC = \frac{15sin30}{sin40} ≈ 11.668

Using the cosine ratio in right triangle ABC

cos70° = \frac{adjacent}{hypotenuse} = \frac{BC}{AC} = \frac{BC}{11.668} ( multiply both sides by 11.668 )

11.668 × cos70° = BC , then

BC ≈ 4.0 ( to the nearest tenth )

6 0
3 years ago
Can someone help me please?
Genrish500 [490]

Answer:

56

Step-by-step explanation:

The angle sum theorem *I think* is that for an n-sided shape, the total sum of its angles is 180(n-2).

The sum of a triangles' angles is 180 degrees.

Therefore 4v-44 = 180.

v - 11 = 45

v = 56 degrees

Note: always check if the answer makes sense

6 0
3 years ago
Read 2 more answers
What is the median of this list of numbers? 5, 10, 13, 7, 5
salantis [7]
The median 13 its in the middle


4 0
3 years ago
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An equilateral triangle is a triangle that has three sides of the same length. the perimeter of an equilateral triangle is 48.6
aleksklad [387]
We know that a triangle has three sides, all the same length (its equilateral, after all)

The equation to find the length of each side is

Perimeter divided by 3

or in this case

48.6 divided by 3=16.2cm (don't forget the unit)

Hope that helps :)
3 0
3 years ago
Read 2 more answers
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