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romanna [79]
3 years ago
9

What is the value of

Mathematics
2 answers:
ipn [44]3 years ago
6 0
All angles in a triangle add up to 180 degrees.
We are finding the value for both y's (they are congruent) so I'll just plug in the answers to the problem.
Let's start with 54.
54*2=108
108+72=180
The answer is then A, 54 degrees
Margarita [4]3 years ago
6 0
All values of angles in a triangle is equal to a total of 180 degrees.

We know that one angle is 72 degrees so we subtract that from 180 to get 108

180 - 72 = 108

We have two missing angles, both equal to y, so we divide the difference of 108 by 2 to get 54 degrees.
108/2 = 54 degrees

72 + 54 + 54 = 180
180 = 180


y = 54 degrees

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The exchange rate at a post office is £1 = 1.17 euros <br><br> how many euros will u get for £280
Sati [7]

Answer:

327.6 €

Step-by-step explanation:

you can solve with an equation

1£ : 1.17€ = 280£ : x

1 : 1.17 = 280 : x

x = 1.17 * 280 : 1

x = 327.6

-------------------

check

1 : 1.17 = 280 : 327.6

0.85 = 0.85

the answer is good

------------------------------------

or you can simpy solve with a multiplication

280 * 1.17 = 327.6

8 0
3 years ago
Help and i will give brainiest if you answer them all if random will report.
svet-max [94.6K]

Answer:

○ 1. B

○ 2. 146.25

Add the numbers

○3. (-6w) - 8 + 1 (-7w)

(-6w) -7 + (-7w)

Rearrange

(-6w) + -7 + (-7w)

(-6w) + (-7w) - 7

Solution

(-6w) + (-7w) - 7

○4. In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Every integer is a rational number: for example, 5 = 5/1

Step-by-step explanation:

Hope it help

Mark me as brainliest

5 0
3 years ago
Read 2 more answers
What is the nth derivative of 1/x?
Juli2301 [7.4K]

Answer:

(-1)^n × (n!) × x^-(n+1)

Step-by-step explanation:

I've attached the solution

8 0
3 years ago
The average cost of online photos decreased
SCORPION-xisa [38]

Answer:

The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year

Step-by-step explanation:

Given that

Price of print in 2002 = p1 =$0.50

Price of print in 2013 = p2 =$0.13

y1 = 2002

y2 = 2013

The rate of change is given by the formula:

r = \frac{decrease}{run}

Here decrease is the change in price and run is the difference in years.

Mathematically, it can be written as:

r = \frac{p_2-p_1}{y_2-y_1}

Putting the values

r =\frac{0.13-0.50}{2013-2002}\\r = \frac{-0.37}{11}\\r =-0.0336\\r = -0.034

Hence,

The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year

6 0
3 years ago
It is POSSIBLE to toss a coin 20 times and have it land tails-up all 20 times.
levacccp [35]

Answer: Yes.

Step-by-step explanation: It is very rare, but is indeed possible.

3 0
3 years ago
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