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grigory [225]
3 years ago
15

Please help I really need it all you have to do is find the missing angle

Mathematics
2 answers:
MariettaO [177]3 years ago
4 0

Answer:

b=80

x=100

a=92

Step-by-step explanation:

ehidna [41]3 years ago
4 0
360-x or they are vertical angles which means the measure of one side is the same on the opposite. The other answer is the right answers though but just in case you needed work shown
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A) a shopkeeper buys a camera for $300 and sells it at $360. Calculate the percentage profit.
Lilit [14]
A) profit/original price x100 =percentage profit

(Profit: 360-300=$60)

=60/300 x100
=20%

b) two cameras (original price): 300x2= $600
two cameras (price sold): 360x2 = $720

Profit without discount: 720-600= $120

120-100= $20 discount

20/720 x100 =2.78%
4 0
2 years ago
Read 2 more answers
Use the Quadratic formula to find all real zeros of the 2nd degree polynomial
schepotkina [342]

Answer:

  x ∈ {-5, -1}

Step-by-step explanation:

Here's the solution using the quadratic formula:

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-24\pm\sqrt{24^2-4\cdot 4\cdot 20}}{2\cdot 4}\\\\=\dfrac{-24\pm\sqrt{576-320}}{8}=\dfrac{-24\pm\sqrt{256}}{8}\\\\=\dfrac{-24\pm 16}{8}=-3\pm 2=\{-5,-1\}

The real zeros are -5 and -1.

_____

There are many ways to check your answer. One of them is to look at the given quadratic, which has no changes of sign in its coefficients. (They are all positive.) That means there can be no positive real roots, so already you know that x=0.5 won't work.

Also, the constant in the quadratic is the product of the roots, For your roots, their product is -7/4, so even multiplying by 4 (the leading coefficient in the given quadratic), you don't get anything like 20.

4 0
3 years ago
HELP ASAP!! I don't understand this question!
Veseljchak [2.6K]

Answer:

I think that you have to multiply the angles with each other and thats how you get your answer. Can I get Branliest?

Step-by-step explanation:


7 0
3 years ago
Is the following number rational or irrational? -3+π
enyata [817]

Answer:

B, irrational

Step-by-step explanation:

We know that π is irrational, since it can not be written as a division between  natural numbers (a sub class of Real numbers called N), it's value is 3,1415(a whole bunch of decimals after this)

If you remove the decimal part of π by subtracting the integer part of it, that is the number 3. the result will still being and irrational number

Since π= 3(the rational part) +0,1415... (the irrational part)

The resut of π-=3= 0,1415...

3 0
3 years ago
The options are 1. is, is not
djverab [1.8K]

Answer:

1. is not

2. increase

3. remain the same

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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