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otez555 [7]
3 years ago
11

Given the triangle below, which of the following equations correctly representsthe relationship between a, b, and c?Triangle not

drawn to scale A cz B az 2abcos (90.)b a2 c2 2abcos (90.)

Mathematics
1 answer:
alukav5142 [94]3 years ago
7 0
A) it is the law of cosine
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Each side of an equilateral triangle measures 30cm. Find the length of an altitude, a , of the triangle?
Archy [21]

Answer:

X=25.98cm

Step-by-step explanation:

From the question we are told that:  

Length of each side l=30cm

Let the triangle be divide by two form a right angle triangle with base angles as 90 \textdegree(angle of perpendicularity) and 60 \textdegree (angle on each vertices of an equilateral triangle)

Generally the equation for the Altitude X is mathematically given by

Trigonometric Rule

X=30sin60

X=15\sqrt{3}

X=25.98cm

6 0
3 years ago
To make plaster, Kevin mixes 3 cups of water with 4 pounds of plaster powder. How
DiKsa [7]

Answer:

15

Step-by-step explanation:

3 0
4 years ago
In simplest radical form, what are the solutions to the quadratic equation 6 = x2 - 10/?
pickupchik [31]

Answer:

x = 5 \± \sqrt{31}

Step-by-step explanation:

Given

6 = x^2 - 10x

Required

The solution in radical form

6 = x^2 - 10x

Rewrite as:

x^2 - 10x - 6 = 0

Using the quadratic formula, we have:

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

Where

a = 1

b = -10

c = -6

So, we have:

x = \frac{-(-10) \± \sqrt{(-10)^2 - 4*1*(-6)}}{2*1}

x = \frac{10 \± \sqrt{100 +24}}{2*1}

x = \frac{10 \± \sqrt{124}}{2}

Split the roots

x = \frac{10 \± \sqrt{4 * 31}}{2}

Express \sqrt 4 as 2

x = \frac{10 \± 2\sqrt{31}}{2}

Split the fraction

x = \frac{10}{2} \± \frac{2\sqrt{31}}{2}

x = 5 \± \sqrt{31}

5 0
3 years ago
Use the expression below to answer the following question:
nadezda [96]
Coefficients: 2 and 12
6 0
3 years ago
Read 2 more answers
Need help with this chart read carefully
irinina [24]

Answer:

10=60 5=30

Step-by-step explanation:

6 0
3 years ago
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