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frez [133]
3 years ago
15

Pemdas please help explain too please

Mathematics
2 answers:
Volgvan3 years ago
7 0
The rhyme I was always taught is

Please (Parenthesis)
Excuse (exponents)
My (multiply)
Dear (divide)
Aunt (Add)
Sally (Subtract)
saul85 [17]3 years ago
6 0

Parenthesis

Exponent

Multiplication

Division

Addition

Subtraction

(left to right)

4²-(3.1+6.4)+4.5

According to PEMDAS, we will do what is inside the parenthesis.

3.1+6.4 = 9.5

<em>4²-9.5+4.5</em>

Then we do figure out the exponent.

4² =  (4)(4) = 16

<em>16-9.5+4.5</em>

Then we do subtraction then addition because PEMDAS also tells us we should do adding and subtracting from left to right. In this expression, subtracting is on the left side so we should do that first.

16-9.5 = 6.5

<em>6.5 + 4.5 = 11</em>

11 is your answer :)

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NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
slamgirl [31]

Answer:

NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Explain the converse of the Pythagorean theorem.

A.  

The converse of the Pythagorean theorem states that if a triangle is a right triangle, then the sum of the squares of its legs is less than the square of its hypotenuse.

<u>B.  </u>

<u>The converse of the Pythagorean theorem states that if the square of one side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle. </u>

C.  

The converse of the Pythagorean theorem states that if a triangle is a right triangle, then the sum of the squares of its legs is greater than the square of its hypotenuse.

D.  

The converse of the Pythagorean theorem states that if the square of one side of a triangle is greater than the sum of the squares of the other two sides, then the triangle is a right triangle.

Step-by-step explanation:


8 0
3 years ago
The architects side view drawing of a saltbox-style house shows a post that supports the roof ridge. The support post is 10 ft t
pochemuha
These calculations are based on the drawing of the file enclosed.

There are three right triangles.

From the big right triangle:

a^2 + b^2 = 25^2

From the small right triangle on the left side:


(25-x)^2 + 10^2 = a^2

From the small right triangle on the right side

x^2 +10^2 = b^2

=> (25-x)^2 + 10^2 + x^2 + 10^2 = a^2 + b^2

=> (25-x)^2 + 10^2 + x^2 + 10^2 = 25^2

=> 25^2 - 50x + x^2 + 10^2 + 10^2 = 25^2

=> x^2 -50x + 100 =0

Use the quadratic formular to find the roots:

x = 2.1 and x = 47.9

Distance from back: 25 - 2.1 = 22.9 ft

Answer: 22.9 ft
8 0
3 years ago
Read 2 more answers
Write an equation for a line that passes through (-4,8) and 8,-1
KatRina [158]
Slope is change in y over change in x.

Change in y is -9
Change in x is +12

So -9/12 or -2/3

Answer -2/3
5 0
3 years ago
Carly is a catcher on the school softball team. By the end of the season, she had played 45% of the 49 games the team played. In
Eduardwww [97]
Carly did not play 22 games
6 0
2 years ago
What is the period of the function F(x) = -4sec (1/2 x)
serg [7]

Answer:

A) 4π

Step-by-step explanation:

The period of a secant function, f(x)=a*sec(bx+c)+d, is defined as 2π/|b| where b is the distance of the period. Since we know b=1/2 given by the function, then the period is 2π/|1/2|=2π/(1/2)=2π(2/1)=4π.

8 0
3 years ago
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