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Nat2105 [25]
3 years ago
9

Mark bought a notebook for $1.45 and some pencils that cost$0.42 each. If the total cost was $6.91, how many pencils did he buy?

Mathematics
2 answers:
Anna11 [10]3 years ago
8 0
Mark bought 13 pencils. 6.91-1.45=5.46   5.46/.42=13

BARSIC [14]3 years ago
5 0
X=amount of pencils

.42x+1.45=6.91

6.91-1.45=5.46

5.46/.42=13

Mark bought 13 pencils
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choli [55]

Answer: 6\ \text{miles}

Step-by-step explanation:

Given

A delivery service charge \$1.25 for each delivery

and an additional \$0.75 for each mile traveled

Suppose, x miles are covered

The charge is given by

\Rightarrow 5.75=1.25+0.75x\\\Rightarrow 4.5=0.75x\\\Rightarrow x=6\ \text{miles}

Therefore, driver traveled 6 miles for delivery

8 0
3 years ago
Ln (1/x)+ln (2x^3)=ln3
Lapatulllka [165]
\ln \frac{1}{x} +\ln2x^3=\ln3
\ln \frac{2x^3}{x} = \ln3
\ln2x^2=\ln3
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3 0
3 years ago
The table shows the distance Shannon ran over a week.
Sedbober [7]

Answer:

Shannon run 1.5 km more on Friday than on Saturday.

Step-by-step explanation:

From the given table

  • Distance run on Friday = 4/2 = 2 km
  • Distance run on Saturday = 1/2 = 0.5 km

  • In order to run how many more kilometers Shannon run on Friday than on Saturday, we need to subtract the distance run on Saturday from the distance run on Friday.

i.e.

Friday run - Saturday run =  2 - 0.5

                                          = 1.5 km

Thus, Shannon run 1.5 km more on Friday than on Saturday.

8 0
3 years ago
Vinny decorated 72 cookies and 36 minutes how many cookies did you decorate per minute
SCORPION-xisa [38]
2 cookies. 72/36= 2 cookies per minute. 
6 0
3 years ago
An average person in the country needs 2,450 kilocalories(kcal) / day of food to meet their full nutritional needs. The average
OlgaM077 [116]

Answer:

The answer to your question is 0.057 ha

Step-by-step explanation:

Data

Kilocalories needed for a person per day = 2450

Kilocalories produced per hectare = 15737000

Process

1.- Calculate the number of kcal needed per a person for a year

                     2450 kcal ----------------- 1 day

                         x            ----------------- 365 days

                              x = (365 x 2450) / 1

                             x = 894250 kcal

2.- Calculate the amount of land needed

                    15737000 kcal ------------- 1 ha

                        894250 kcal ------------  x

                          x = (894250 x 1) / 15737000

                          x = 0.057 ha

7 0
3 years ago
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