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3 years ago

Special right triangles homework 2

Mathematics

1 answer:

Reptile [31]3 years ago

3 0

What’s the question, bc there is no pic

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Find ∠C and hence classify each triangle according to:

bekas [8.4K]

Answer:

a) 0

b) scalene and obtuse

Step-by-step explanation:

∠A = 20

∠B = 60

∠C = 180 - 20 - 60 = 100 (obtuse)

Since none of the angles are equal, no sides are equal either

So, it's a scalene triangle

Since one angle is obtuse, it's an obtuse triangle

8 0

3 years ago

zepelin [54]

Answer:

Multiply the first equation by 3 and multiply the second equation by -2.

This is justified by the multiplication property of equality

Step-by-step explanation:

we have

$2x+5y=7$ ----> first equation

$3x+4y=6$ ----> second equation

step 1

Multiple the first equation by 3 both sides

$3(2x+5y)=3(7)$ -----> by multiplication property of equality

$6x+15y=21$ ----> new first equation

step 2

Multiple the second equation by -2 both sides

$-2(3x+4y)=-2(6)$ -----> by multiplication property of equality

$-6x-8y=-12$ ----> new second equation

step 3

Solve the system of equations by elimination

Adds new first equation and new second equation

$6x+15y=21\\-6x-8y=-12\\-------\\15y-8y=21-12\\7y=9\\y=\frac{9}{7}$

Find the value of x

substitute the value of y in any equation and solve for x

$6x+15y=21$

$6x+15(\frac{9}{7})=21$

$6x=21-\frac{135}{7}$

$6x=\frac{12}{7}$

$x=\frac{2}{7}$

The solution is the point $(\frac{2}{7},\frac{9}{7})$

therefore

Multiply the first equation by 3 and multiply the second equation by -2.

This is justified by the multiplication property of equality

8 0

3 years ago

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Anyone tryna beat minecraft w me ( no cheats and in survival.)

Nataliya [291]

Answer:

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6 0

3 years ago

Read 2 more answers

The perimeter of a rectangle is equal to 10. If the length is halved and the width is doubled, the new perimeter is increased by

ira [324]

Answer:

look on math papa

Step-by-step explanation:

3 0

4 years ago

Which graph represents the fraction

____ [38]

Based on my eyesight, it looks like C intercepts the y-axis at y = 2.
Since the y-intercept is the deciding factor, let's take 2 · 4⁰

Now, 4⁰ = 1, since anything raised to the power of 0 gives 1.
Now, the intercept is at 2 · 1 = 2.

Hence, (C) is the correct graph.

4 0

3 years ago