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daser333 [38]
4 years ago
5

A rectangular lawn is twice as long as its breadth and its perimeter is 90 m.

Mathematics
1 answer:
Nina [5.8K]4 years ago
7 0
Answer: length = 30, breadth = 15

length = l
breadth = b

l = 2b

2b + b + 2b + b = 90
6b = 90
b = 15

l = 2b
l = 2(15)
length = 30

b = 15
breadth = 15
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Answer:

2) 24 hours in a day

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Step-by-step explanation:

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There are 350 students at a middle school dance, where ratio of 7th graders to 8th graders is 3:4 how many of the students at th
Mademuasel [1]

Answer:

150 7th Graders and 200 8th graders

Step-by-step explanation:

Basically, add the parts of the ratio together and create 7. Then, to find out how much 1 part is equal to, divide the amount of students by the number of parts - so it would be like 350/7 = 50.

So now you know that 1 part is equal to 50 students. From here, you can multiply the two amounts of parts by 50.

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4 0
3 years ago
1/2+1/10+1/5 eaquals?
ss7ja [257]
It's 4/5 because if u add 1/2 and 1/10 together u get 3/5 then u have to add 1/5 which is 4/5
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3 years ago
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PLEASE HELP I WILL MARK!!
Rina8888 [55]

answer is D

Explamation:

given points are (7,9) and (12,11)

mid \: point \: of \: x =  \frac{x1 + x2}{2 }  =  \frac{7 + 12}{2}  = 9.5 \\ midpoint \: of \: y =  \frac{y1 + y2}{2}  =  \frac{9 + 11}{ 2} = 10

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8 0
4 years ago
Devon purchased a new car valued at $16,000 that depreciated continuously at a rate of 35%. Its current value is $2,000. The equ
alexdok [17]

Given :

Devon purchased a new car valued at $16,000 that depreciated continuously at a rate of 35%.

Its current value is $2,000.

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Age of car.

Solution :

Price of car after 1 year :

P_1=P_o(1-0.35)

Price of car after 2 year :

P_2=P_1(1-0.35)\\\\P_2=[P_o(1-0.35)](1-0.35)\\\\P_2=P_o(1-0.35)^2

So, price of car after n years.

P_n=P_o(1-0.35)^n

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Therefore, age of car in nearest whole number is 4 years.

Hence, this is the required solution.

8 0
3 years ago
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