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kykrilka [37]
3 years ago
7

Kelly telephoned brook about a homework problem. Kelly said, “Four plus three times two is 14, isn’t it?” Brook replied, “No, it

’s 10.” Did someone make a mistake? Can you explain where these two answers came from?
Mathematics
2 answers:
Nuetrik [128]3 years ago
8 0
Kelly made a mistake by not following PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. She added 4 and 3 before multiplying it by two when the multiplication comes before the addition or subtraction. Brook is correct.
allochka39001 [22]3 years ago
7 0

Answer:


Step-by-step explanation:

Keely should follow the BODMAS rule

then she will get the correct answer 10


You might be interested in
A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.
Whitepunk [10]

Answer:

A=81\pi\ m^{2}

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

C=2\pi r

we have

C=18\pi\ m

substitute and solve for r

18\pi=2\pi r

simplify

18=2 r

r=9\ m

Step 2

Find the area of the circular cross section

The area of the circle is equal to

A=\pi r^{2}

we have

r=9\ m

substitute

A=\pi (9)^{2}

A=81\pi\ m^{2}

8 0
3 years ago
SOLVE BY GRAPHING
natka813 [3]

Answer:

x=2 and y=3.

Step-by-step explanation:

Let the one number be x and the other number be y.

ATQ, 2x=1+y and x+y=5. x=2 and y=3.

8 0
3 years ago
Find the volume of the<br> triangular prism.<br> 3.6 cm<br> 5.4 cm<br> 9 cm
MrMuchimi

Answer:

174.96cm2

Step-by-step explanation:

V=lbh

=3.6×5.4×9

=174.96cm2

I don't knowif you want it in milliliters or litres so here are both of them

milliliters = 174.96

litres = 0.17496

6 0
2 years ago
Ben bought a Rolex for $150,000 with a 100%<br> markup, how much will it cost?
FromTheMoon [43]

Answer:

300,000$

Step-by-step explanation

<h3>♣ Formulate:</h3>

Based on the given conditions,

formulate:

150,000 x (100% + 100%)

•••••••••••••••••••••••••••••••••

<h3>♠ Calculate</h3>

150,000 x (1 + 1)

= 150,000 x 2

= 300,000

{ Alternative Forms: 3 x 10⁵ }

Answer:

Ben bought a Rolex for $150,000 with a 100% markup, It will cost 300,000$

•♣••♠••♣••♠••♣••♠••♣••♠••♣•

3 0
2 years ago
HELP!! PLEASE EXPLAIN
yanalaym [24]

Answer:

10 pieces

Step-by-step explanation:

basically you divide 7.5 by .75 which equals 10.

You do that because you are seeing how many 3/4 inch pieces are in 7 and a half inches of ribbon and 7 1/2 = 7.5     and     3/4= .75

3 0
2 years ago
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