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GuDViN [60]
2 years ago
6

Using Order of Operations (PEMDAS), solve the following two expressions. Show all steps.

Mathematics
2 answers:
aksik [14]2 years ago
8 0

Answer:

A:

Multiple: 3 * 5 = 15

Add: 7 + the result of step No. 1 = 7 + 15 = 22

Divide: 4 / 2 = 2

Subtract: the result of step No. 2 - the result of step No. 3 = 22 - 2 = 20

Add: the result of step No. 4 + 3 = 20 + 3 = 23

B:

Add: 7 + 3 = 10

Multiple: the result of step No. 1 * 5 = 10 * 5 = 50

Divide: 4 / 2 = 2

Subtract: the result of step No. 2 - the result of step No. 3 = 50 - 2 = 48

Add: the result of step No. 4 + 3 = 48 + 3 = 51

mart [117]2 years ago
4 0

9514 1404 393

Answer:

  a) 23

  b) 26

Step-by-step explanation:

a) Perform the multiplication and division first, then the addition.

  7 + 3·5 -4÷2 +3

  = 7 +15 -2 +3

  = 23

__

b) Evaluate parentheses first, then the rest of it. The multiplication and division are done before the addition at the same level.

  ((7 +3)·5 -4)÷2 +3

  = (10·5 -4)÷2 +3

  = (50 -4)÷2 +3

  = 46÷2 +3

  = 23 +3

  = 26

_____

<em>Additional comment</em>

An appropriate calculator can evaluate these for you. The Go.ogle calculator reliably follows the order of operations. You can use an asterisk (*) for multiplication with that calculator.

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Which type of triangle will always have a perpendicular bisector that is also an angle bisector?
jenyasd209 [6]

Answer:

Equilateral triangle will always have a perpendicular bisector that is also an angle bisector.

Step-by-step explanation:

Equilateral triangle property:

  • All sides of the equilateral triangle are equal.
  • Angle of every equilateral triangle are equal to 60°.
  • Every altitude of an equilateral triangle is also a median and a bisector.
  • Each median is also an altitude and a bisector.
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Therefore, by equilateral triangle property;

Perpendicular bisectors are angle bisectors in an equilateral triangle Since, all sides and angles are the same in an equilateral triangle.

Also, the angle bisector of an equilateral triangle forms 90 degree angle with the opposite side and bisects that side.

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Lelu [443]
How long is Julio hiking?
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There are 18 female students and 16 male students in a class. Which of the following expresses the ratio of female students to m
fiasKO [112]

Hey!

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

Solution:

The ratio is FEMALES to MALES.

So its 18/16, 18:16, or 18 to 16.

~Now we need to simplify.

18:16 → 18/2:16/2 → 9:8

*Note* When you have a ratio you need to know which comes first. If you put males to females that incorrect. It has to be correct according to the question.

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

Answer:

\large\boxed{B)~9~to~8}

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

Hope This Helped! Good Luck!

4 0
3 years ago
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