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2 years ago

Someone please help me i dont understand this if correct ill mark brainliest

Mathematics

2 answers:

mestny [16]2 years ago

8 0

Answer:

A, 36

Step-by-step explanation:

There are 180 degrees in a triangle. 180-(65+79) = 36.

LenaWriter [7]2 years ago

7 0

<h2>Answer: Choice A- 36</h2>

Step-by-step explanation:

Create an equation for finding the measurement of angle x.

The interior angles of a triangle always add up to 180° while the exterior angles of a triangle are equal to the sum of the two interior angles that are not adjacent to it. Another way to calculate the exterior angle of a triangle is to subtract the angle of the vertex of interest from 180°

We are given two out of the three angles. The first angle we are given measures 65° while the second angle measures 79°. Since all three angles always add up to 180°, we can add 65°, 79° and x° to equal 180°. This gives us the equation 65 + 79 + x = 180.

Now solve for x. 

The first step in solving for x is combining like terms, so add 65 and 79. This gives us the equation 144 + x = 180

The next step in solving for x is to get by itself on one side of the equation and to have the number on the other side of the equation by itself. In order to do this, subtract 144 from each side of the equation to eliminate the number from the side with x in it.

This gives us the equation x = 36 which is our answer. The value of x is 36. Hope this helps, and have a great day!

$65+79+x=180$

$(65+79)+x=180$

$144+x = 180$

$(144 - 144)+x= (180-144)$

$x=36$

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3 years ago

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Michael is making a card for his dad's birthday. He's shaded a triangular section on the card where he wants to write his dad a

artcher [175]

Answer:

Option C (72)

Step-by-step explanation:

In the figure attached we can see a rectangle ABCD with length 12 cm and width 9 cm.

A triangle PEF with height BE and base EF.

Since side AE = 3 cm, so side EB = EC = 9 - 3 = 6cm

and EF = AD = 12 cm

Now we will find the area of of the parts of the card that are not shaded.

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= (12×9) -

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2 years ago

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Paul is three times as old as Mary and Peter is four times as old as Mary,If the sum of their ages is 64, how old are Peter,Paul

uysha [10]

Let Mary's age be x.

Paul is three times as old as Mary, so Paul's age would be 3x.

Peter is four times as old as Mary, so Peter's age would be 4x.

The sum of their ages is 64
⇒ Paul's age+ Peter's age+ Mary's age= 64
⇒ 3x+ 4x+ x= 64
⇒ 8x= 64
⇒ x= 64/8
⇒ x= 8

Paul's age is: 3x= 3*8= 24

Peter's age is: 4x= 4*8= 32

Final answer: Paul is 24 years old.
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3 years ago

Problem: (5x^4 – 3x^3 + 6x) – (3x^3 + 11x^2 – 8x) Answer: 5x^4-6x^3 -11x^2 +14x

g100num [7]

Combine the like terms by adding the coefficients,
->5x^4 can't add anything so leave it there,
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->We can't do anything with -11x^2 so leave it there as well,
->6x add to -(-8x) gives you 14x,
You will get for your final answer is 5x^4-6x^3-11x^2+14x.

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3 years ago