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3 years ago

A rectangular field has length as 25m and area as 225 m2.

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

3 0

Answer:

X=19m

Step-by-step explanation:

A=LxW

W=A/L=225/25=9m

Rope used =perimeter

4(x-2)=2L+2W

4x-8=2x9+2x25

4x=68+8

X=76/4=19m

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What is the exact decimal equivalent for 7/9

goblinko [34]

if you divide 7 into 9 you get the decimal of the fraction. so 7 divided by 9 is 0.777777778

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4 years ago

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Write and simplify the equation you would use to solve the problem below. You buy 5 tickets to a concert for you and your friend

sergejj [24]

X = (170-20)/5
x = 150/5
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4 years ago

A rich woman deposits a whole number of dollars x in her bank. The next time she deposits y dollars (still a whole number). Each

grin007 [14]

Answer:

x = 12

y = 22

Total amount = $2596

Step-by-step explanation:

First let's find the value of each deposit until the 10th in relation to x and y:

1st: x

2nd: y

3rd: x + y

4th: x + 2y

5th: 2x + 3y

6th: 3x + 5y

7th: 5x + 8y

8th: 8x + 13y

9th: 13x + 21y

10th: 21x + 34y

Now, we can write a system with two equations and two variables:

2x + 3y = 90

21x + 34y = 1000

From the first equation: x = (90 - 3y)/2

Using this value of x in the second equation, we have:

21*(90 - 3y)/2 + 34y = 1000

945 - 31.5y + 34y = 1000

2.5y = 55

y = 22

Now we can find x:

x = (90 - 3*22)/2 = 12

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4 years ago

Need help finding the next 3 terms of the geometric sequence of 54/25, 18/5, 6, 10

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4 years ago

Brian invests $10,000 in an account earning 4% interest, compounded annually for 10 years. Five years after Brian's initial inve

pentagon [3]

Answer:

Brian has $776 more account in his account than Chris.

Step-by-step explanation:

Compound interest Formula:

$A=P(1+r)^t$

$I$ = A-P

A= Amount after t years

P= Initial amount

r= Rate of interest

t= Time in year

Given that,

Brian invests $10,000 in an account earning 4% interest, compounded annually for 10 years.

Here P = $10,000 , r= 4%=0.04, t=10 years

The amount in his account after 10 years is

$A=10000(1+0.04)^{10}$

=$14802.44

≈$14802

Five years after Brian's investment,Chris invests $10,000 in an account earning 7% interest, compounded annually for 5 years.

Here P = $10,000 , r= 7%=0.07, t=5 years

The amount in his account after 5 years is

$A=10000(1+0.07)^{5}$

=$14025.51

≈$14026

From the it is cleared that Brian has $(14802-14026)=$776 more account in his account than Chris.

6 0

3 years ago