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3 years ago

100PTS AND BRAINLIEST PLEASE HELP

Mathematics

2 answers:

Verdich [7]3 years ago

8 0

Answer:

b- ∠ACB ≅ ∠E'C'D'; ∠D'E'C' ≅ ∠BAC

Step-by-step explanation:

Correct On test !!

Elina [12.6K]3 years ago

4 0

Answer:

b- ∠ACB ≅ ∠E'C'D'; ∠D'E'C' ≅ ∠BAC

Step-by-step explanation:

I got it right on the test :))

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The difference between -5 and -12

Snowcat [4.5K]

Answer:

Step-by-step explanation:

make a number line from 0 to -12. Find -5 as well as, -12. then count how many times it takes you to get from -5 to -12.

you can just do 12-5=7

Hope this helped

4 0

4 years ago

Read 2 more answers

I'm stuck. Help please.

zmey [24]

The answer is 5 because that is the number that 4 corresponds to

5 0

3 years ago

Assume u4 is not a linear combination of {u1,u2,u3}

Feliz [49]

Answer:

A. {u1,u2,u3,u4} is a linearly independent set of vectors unless one of {u1,u2,u3} is the zero vector.

Step-by-step explanation:

Given that u4 is not a linear combination of {u1,u2,u3}

This means there is no possibility to write u4 = au1+bu2+cu3 for three scalars a,b,and c.

This gives that $u_4-au_1-bu_2-cu_3 \neq 0$

This implies that these four vectors are not linearly dependent but linearly independent.

Hence option a is right.

A. {u1,u2,u3,u4} is a linearly independent set of vectors unless one of {u1,u2,u3} is the zero vector.

8 0

3 years ago

Solve by completing the square

erastovalidia [21]

Answer:

Your answers would be:

x = 10 and x = -8

Step-by-step explanation:

Solve for the zeros:

x² - 2x - 78 = 2

Subtract both sides by 2.

x² - 2x - 80 = 0

Use the quadratic formula: $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a = 1

b = -2

c = -80

Plug in and solve:

$x=\frac{-(-2)\pm\sqrt{(-2)^2-4(1)(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{(-2)^2-4(1)(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{4-4(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{4+320}}{2(1)}\\\\x=\frac{2\pm\sqrt{324}}{2(1)}\\\\x=\frac{2\pm18}{2}\\$

Solve for +:

$x=\frac{2+18}{2}\\\\x=\frac{20}{2}\\\\x=10$

Solve for -:

$x=\frac{2-18}{2}\\\\x=\frac{-16}{2}\\\\x=-8$

5 0

3 years ago

Find the maximum value of y = -2(x - 4)2 - 6.

pashok25 [27]

Answer:

-2(-2)

Step-by-step explanation:

-2(x--4)2

-2(-4x)2

different sign subtract

-2(-2)

Hope this helps :D

5 0

3 years ago