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3 years ago

Please help me please

Mathematics

1 answer:

docker41 [41]3 years ago

7 0

a. sum of angles in triangle

b. supplementary angles

c. sum of angles is triangle=180 and supplementary angles =180

d. Parts whole postulate/subtraction

e. exterior angle equals the sum of the 2 remote interior angles

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pls help me giving brainless. find all angle measures. Assume each truss is symmetric. All of the roofs have a total top peak an

Molodets [167]

Answer:

I hate to do and take the points but so we just got to find the angles?

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3 years ago

Read 2 more answers

Consider the system of equations.

Harman [31]

The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:

x = -3, y = 2

The given system of equations:

x + 2y = 1............(1)

-3x - 2y = 5..........(2)

This can be written in matrix form as shown:

$\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}1\\5\end{array}\right]$

Find the determinant of $\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right]$

$\triangle = 1(-2) - 2(-3)\\\triangle = -2+6\\\triangle = 4$

$\triangle_x = \left[\begin{array}{ccc}1&2\\5&-2\end{array}\right]\\\triangle_x = 1(-2)-2(5)\\\triangle_x = -2-10\\\triangle_x =-12$

$\triangle_y = \left[\begin{array}{ccc}1&1\\-3&5\end{array}\right]\\\triangle_y = 1(5)-1(-3)\\\triangle_y = 5 + 3\\\triangle_y =8$

$x = \frac{\triangle_x}{\triangle} \\x = \frac{-12}{4} \\x = -3$

$y = \frac{\triangle_y}{\triangle} \\y = \frac{8}{4} \\y = 2$

The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:

x = -3, y = 2

Learn more here: brainly.com/question/4428059

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2 years ago

Write 9020000 in standard form?

dolphi86 [110]

Answer:

9.02 x 10^6

Step-by-step explanation:

hope this helps!

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3 years ago

Which is a correct first step for solving this equation? 4x=7+3(2x−5)

jeka94

Doing (2x-5) first is what

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3 years ago

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PLEASEEE HELPPPP ASAPPPP

stellarik [79]

$\cos 27^{\circ} = \dfrac{KL}x\\\\\implies \cos 27^{\circ} = \dfrac{6.3}x\\\\\implies x = \dfrac{6.3}{\cos 27^{\circ}}=7.1~ \text{units.}$

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2 years ago