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3 years ago

8 . In which step does a mistake first occur?

Mathematics

1 answer:

NISA [10]3 years ago

7 0

Answer:

Step 1

Step-by-step explanation:

Concepts:

When solving any expression or equation, we must go through the order of operations. The order of operations is a set of rules that tell us which operation we must do first. The set of rules is often represented by the acronym PEMDAS, which stands for Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction.

Solving:

Let's go through the order of operations to solve the expression, so we can see the mistake in the steps.

(24 + 3 + 10) - 14 + 2

1. Add 24 and 3 together

(24 + 3 + 10) - 14 + 2
(27 + 10) - 14 + 2

2. Add 27 and 10 together

(27 + 10) - 14 + 2
(37) - 14 + 2
37 - 14 + 2

3. Subtract 14 from 37

37 - 14 + 2
23 + 2

4. Add 23 and 2 together

23 + 2

Now, let's compare these steps to the ones given.

There's a mistake in Step 1 because 24 and 3 was divided instead of added; 24 + 3 = 27, not 8.

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If U = {x: X € N, 1 < × < 15)

Inessa05 [86]

Answer:

Step-by-step explanation:

Given:

U = {x: X € N, 1 < × < 15) = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}

A = {2,4,6,8,10,12,14}

B = {3,6,9,12,15}

C = {5,10,15}

(a) Verify A(BnB)=(AUB)(AUB)

A U (B n B)

= {2,4,6,8,10,12,14} U ( {3,6,9,12,15} n {3,6,9,12,15} )

= {2,4,6,8,10,12,14} U {3,6,9,12,15}

= {2,3,4,6,8,9,10,12,14,15}

( A U B) n (A U B)

= {2,3,4,6,8,9,10,12,14,15} n {2,3,4,6,8,9,10,12,14,15}

= {2,3,4,6,8,9,10,12,14,15}

Therefore

A U (B n B) = ( A U B) n (A U B)

verifies

(b) Verify An(BUC)=(AnB)u(AnC)

A n ( B U C)

= {2,4,6,8,10,12,14} n ( {3,6,9,12,15} U {5,10,15} )

= {2,4,6,8,10,12,14} n {3,5,6,9,10,12,15}

= {6,10,12}

( A n B ) U ( A n C )

= ( {2,4,6,8,10,12,14} n {3,6,9,12,15} ) U ( {2,4,6,8,10,12,14} n {5,10,15} )

= {6,12} U {10}

= {6,10,12}

Therefore

A n ( B U C) = ( A n B ) U ( A n C )

verifies

AU(BUC)

= {2,4,6,8,10,12,14}U{3,6,9,12,15}U{5,10,15}

= {2,3,4,5,6,8,9,10,12,14,15}

(AUB)U(AUC)

= ({2,4,6,8,10,12,14}{3,6,9,12,15})U({2,4,6,8,10,12,14}U{5,10,15})

= {2,3,4,6,8,9,10,12,14,15}U{2,4,5,6,8,10,12,14,15}

= {2,3,4,5,6,8,9,10,12,14,15}

Therefore

AU(BUC)=(AUB)U(AUC)

verifies

5 0

3 years ago

Need help with this thanks!! (Image attached)

damaskus [11]

Answer:

A) Hertz: 42x+32=y

Enterprise: y=46x+24

B) Hertz is less by 16 $; 300$ minus 386$

C)16$

Step-by-step explanation:

7 0

3 years ago

Is the graph increasing, decreasing, or constant where -3

faust18 [17]

I think it’s increasing i’m not sure though

4 0

3 years ago

I NEED MAJOR HELP PLEASE

ehidna [41]

Answer:

1st box in justification is going to be subtraction property.

2nd box is multiplication property.

1 box in steps is going to be (2/3y)=-6

2nd box in steps (2/3y)*(3/2)=-6(3/2)

3rd box in steps y=-9

Step-by-step explanation:

you're basically trying to solve for y. trying to get it by it self.

if you want me to explain it further down, you can tell me.

and I hope that helped

8 0

3 years ago

Could anyone help me with these plssss!!! ITS DUE TMR!!!!!

Maslowich

Answer: angle two us the same as angle 4,6,and 8

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Step-by-step explanation:

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3 years ago