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2 years ago

Determine whether the triangles are congruent by AA., SSS, SAS, or not similar.

Mathematics

1 answer:

klemol [59]2 years ago

6 0

Step-by-step explanation:

they are similar by AA .

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Van and Polina have each drawn a conclusion about multiplying negative fractions.

Leto [7]

Ivan only, because an odd number of negatives does not always make negatives while an even number does.

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3 years ago

Read 2 more answers

Please help me out!

seropon [69]

Answer:

Second option

Third option

Fourth option

Step-by-step explanation:

We have the following quadratic function

$f(x) =(x-1)(x+7)$

Use the distributive property to multiply the expression

$f(x) =x^2+7x-x-7$

$f(x) =x^2+6x-7$

For a function of the form $f (x) = ax ^ 2 + bx + c$ the x coordinate of the vertex is:

$x =-\frac{b}{2a}$

Then in this case the coordinate of the vertex is:

$x =-\frac{6}{2(1)}$

$x =-3$

To obtain the y coordinate of the vertex we evaluate the function at $x = -3$

$f(-3) =(-3)^2+6(-3)-7$

$f(-3) =9-18-7$

$f(-3) =-16$

Then the vertex is: (-3, -16)

We can see in the graph that the zeros of the function are x=1 and x=-7

Then the function is decreasing from -∞ to -3 and then it is increasing from -3 to ∞

The function is positive for $x$ and $x> 1$

The correct answers are:

Second option

Third option

Fourth option

7 0

3 years ago

The front and back covers of a text book are each 0.3 thick between the cover are 200 sheets of paper each 0.008 cm thick how hi

shepuryov [24]

Answer: 1,000

Step-by-step explanation:

The height of 10 stacks of books would be a 1,000 because if it's 0.3 thick between covers of 200 sheets then 10 books would be a 1,000.

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2 years ago

Solve -5(3n + 4) = 40.

Sveta_85 [38]

N=-4
Distribute the -5
-15n-20=40
-15n=60
n=-4

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2 years ago

Evaluate the expression 4 1/2 ÷ 3/4

Darya [45]

Answer: 6

Step-by-step explanation:

7 0

1 year ago