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02.04.2023

Simplify 2/5+2/5-7/15

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09.07.2023, solved by verified expert

Chemistry, Q&A Expert, I am a Assistant Professor in Maharaj Singh College Saharanpur, Uttar Pradesh, India

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Mathematics

Simplify 2/5+2/5-7/15

Step-by-step answer

P Answered by Specialist

$\frac{1}{3}$

Step-by-step explanation:

$\frac{2}{5} +\frac{2}{5} -\frac{7}{15}$

$=\frac{4}{5} -\frac{7}{15}$

$=\frac{(4)(15)-(5)(7)}{(5)(15)}=\frac{60-35}{75} =\frac{25}{75}$

Simplified:

$=\frac{1}{3}$

Hope this helps

Mathematics

Simplify -8g+3+5-7g a) g+8 b) -15g + 8 c) 2-g d) -7g

Step-by-step answer

P Answered by PhD

B) -15g+8

Step-by-step explanation:

The given expression is -8g+3+5-7g

We regroup the terms to obtain;

-8g-7g+3+5

We now combine the similar terms to obtain;

-15g+8

The correct option is B.

Mathematics

Simplify -8g+3+5-7g a) g+8 b) -15g + 8 c) 2-g d) -7g

Step-by-step answer

P Answered by PhD

B) -15g+8

Step-by-step explanation:

The given expression is -8g+3+5-7g

We regroup the terms to obtain;

-8g-7g+3+5

We now combine the similar terms to obtain;

-15g+8

The correct option is B.

Mathematics

Imran is paid ?286 per week Every week he puts 20% of his wage into a savings account How much does he put into his savings each week

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown

Step-by-step answer

P Answered by PhD

Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram

Mathematics

An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?

Step-by-step answer

P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45

Mathematics

Anthony received $150 for his birthday this year. This was $10 less than half the amount he received last year. How much money did Anthony receive for his birthday last year?

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

An online media service offers video and music downloads. Each download of a song costs $1. Each download of a video costs 5 times as much as the song download. You have a credit of $70. How many songs can you purchase after buying 12 videos?

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53

Step-by-step answer

P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

Mathematics

A 4300-N force from a car s engines produces an acceleration of 3.3 m/s2. What is the mass of the car? A. 4300 kg B. 1300 kg C. 14,000 kg D. 390 kg

Step-by-step answer

P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

=4300/3.3

=1303.03kg

Approximately it is aqual to 1300kg

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