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cricket20 [7]
3 years ago
11

I will upvote and give brainliest answer

Mathematics
1 answer:
sesenic [268]3 years ago
4 0

Answer:

50

Step-by-step explanation:

Line ED is a straight line.  This means that it is 180.  The other two angles combined are 130.  Subtract 180 from 130 and you will get 50.

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Factor b^4 - 2b^2 - 63
Andrej [43]

Answer:

( b − 9 ) ( b + 7 )

Step-by-step explanation:

Find two number that multiplies - 63 and add - 2

9 & 7 are both the greatest common factor

4 0
3 years ago
Read 2 more answers
It was estimated that 825 people would attend the soccer game, but 817 people actually attended.
Salsk061 [2.6K]

Answer:

\frac{actual  \: no- estimated \: no}{actual \: no}  \times 100 \\  \frac{825 - 817}{825}  \times 100 \\  \frac{8}{825}  \times 100 \\  \frac{800}{825}  \\  \frac{32}{33}  \\ 0.96\%

4 0
3 years ago
If it says to evaluate an expression, does it mean to answer it?
Fed [463]
Evaluating an expression means either to solve the expressions or to simply it.

Solving an expression:

2 - (10 + 5)

A simply expression. After doing the math the answer comes out as -3.

2x + 3x

This is an algebraic expression. This means we have variables like x and y.
 In this case, we can only simplify it. Because we don't know what x is equal to.

Because they are like terms (which means they have the variable) we can add them to together.

2x + 3x = 5x

I hope this answer clears up any misunderstandings about expressions and over all helped you learn something! If you still need some help, don't hesitate to DM on Brainly! I wish you best of luck on your journey of math!

EDIT:

Now what if you have an expression like this:

5x + 5m where x=4 and m=8

In mathematics, something like 5x is the same difference as 5 * x.
And x is just a placeholder for a number or for another variable.

And in this equation, x is equal to 4. So, we just replace x with 4.

5(4) + 5m

Same this with m. The variable m is equal to 8.

5(4) + 5(8)

We can solve!

5(4) + 5(8) = 20 + 40 = 60

Our answer is 60.
8 0
3 years ago
Read 2 more answers
Need help with my math homework
natta225 [31]

Answer:

y = -1/2x + 3

Step-by-step explanation:

y - y₁ = m(x - x₁)

⇒ y - 0 = -1/2(x - 6)

⇒ y = -1/2x + 3

8 0
3 years ago
Juliette ate 1/3 of a cake, and Brad ate 3/8 of the same cake. What fraction of the cake was eaten?
solniwko [45]

Answer:

17/24

Step-by-step explanation:

Find common denominators...

1/3 = 8/24

3/8 = 9/24

Now add...

17/24 of the cake was eaten

Hope this helps :)

5 0
3 years ago
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