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Nataly [62]
3 years ago
15

Find the value of a.

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
7 0

Answer:

mthway

Step-by-step explanation:

math*

shusha [124]3 years ago
3 0

= 81° + a° + a° = 180° ( angle sum property )

81° + 3a = 180° \\ 3a = 180 - 81 \\ 3a = 99 \\ a =  \frac{99}{3} \\ a = 33°

The three angles of this triangle are :

\:  ∠1 \:= 81° \\ \:  \: ∠2 = 2a = 2 \times 33 = 66° \\ ∠3 = a = 33 \\  \\ ∴ \: a = 33° \:

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Y intercept of this graph​
Aleksandr [31]

Answer:

The y intercept is - 2

Step-by-step explanation:

Because in the y axis the line crosses - 2

8 0
3 years ago
Here someone help me is this correct or no someone reported me saying it was wrong
Neko [114]
-2^{4} = 16

You're right.
8 0
3 years ago
Read 2 more answers
Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?
goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

A(x) = \frac{f(b)-f(a)}{b-a}

As per the statement:

f(x) = x^2-2x-4

we have to find the average rate of change from x = -1 to x = 4

At x = -1

f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1

and

at x = 4

f(4) = (4)^2-2(4)-4 = 16-8-4 = 4

Substitute these in [1] we have;

A(x) = \frac{f(4)-f(-1)}{4-(-1)}

⇒A(x) = \frac{4-(-1)}{4+1}

⇒A(x) = \frac{5}{5}

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

4 0
3 years ago
Read 2 more answers
Brandy plays a hockey video game. She earns 2 stars for every goal she scores
r-ruslan [8.4K]

Answer:

-8 stars

Step-by-step explanation:

if she gets 2 stars for scoring a goal and losses 2 for missing one then if she gets 8 goals = 16 stars and misses 12 goals = - 24 stars so 16-(-24) = -8 stars

8 0
3 years ago
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5 ÷ x for x = 1/3 solve
WARRIOR [948]
So if x is equal to 1/3, then our equation would be 5/(1/3). When dividing by a fraction, you can multiply by the reciprocal to find the answer, meaning that if you divide by 1/3, you can multiply by 3/1. So your answer would be 15.
5/(1/3)=x
5*3=x
15=x

6 0
3 years ago
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