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cupoosta [38]
4 years ago
5

In a science test devi scores 15 marks more than lixin . If devi obtains twice as many marks as lexin . Find the number of marks

lixin obtains. ​
Mathematics
1 answer:
Aleks04 [339]4 years ago
7 0

Answer:

15

Step-by-step explanation:

D=2l

D=l+15

Substitute

2l=l+15

L=15

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The rectangular backboard of a basketball court needs to be assembled. Its area is given as 18,900 cm2 and the width as 1.8 m.
Alex

Answer:

length=1.05m

perimeter=2.7m

Step-by-step explanation:

18900 in m^2=1.89 m^2

area=length*width

1.89=length*1.8 m

length=1.89÷1.8

length=1.05 m

perimeter=(l+w) 2

perimeter=(1.05+1.8)2

perimeter=2.85×2

perimeter=2.7 m

6 0
3 years ago
A hockey team is revealing their championship banner outside their stadium. The banner is in the shape of a triangle with a heig
kipiarov [429]

Answer: the length of the base of the banner is 3 meters.

Step-by-step explanation:

Assuming the banner is in the shape of a right angle triangle, we would apply the formula for determining the area of a triangle which is expressed as

Area = 1/2 × base × height

Let b represent the base

The banner is in the shape of a triangle with a height that is 4 times as tall as the base length of the banner. It means that the height of the banner is 4b

If the total area of the banner is 18 square meters, it means that

18 = 1/2 × b × 4b

18 = 2b²

b² = 18/2 = 9

b = √9 = 3 meters

5 0
3 years ago
A rental car agency charges $249 per week plus $0.25 per mile to rent a car. the charge for a minivan is $180 per week plus $0.4
Alecsey [184]

Answer:

460 miles, 1 week

Step-by-step explanation:

249 per week + 0.25 per mile

180 per week + 0.4 per mile

after 460 miles in 1 week the cost will be the same

6 0
3 years ago
-9+b=3.5 what is the value of b?
Serggg [28]

Answer:

12.5

Step-by-step explanation:

In order to solve, we need to add 9 to both sides of the equation:

<u>Our sum applied:</u>

b=12.5

4 0
3 years ago
Write an algebraic expression to represent each scenario.<br><br> Part A: “the sum of 6 and y”
Nostrana [21]

Answer:

6 + y

Step-by-step explanation:

Here, we want to write an algebraic expression to represent the situation

Mathematically, we want to add 6 and y

The algebraic expression will be;

6 + y

3 0
3 years ago
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