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4 years ago

Can someone help me on this one Please

Mathematics

1 answer:

Mumz [18]4 years ago

6 0

X-4y=1
2x+y=11
ok so you have x-4y=1 and 2x+y=11
3x-3y=12 is your answer

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Describe this pattern and Find the next 3 numbers in the pattern 3.5, 13, 41.5, 127, , , . also explain in a easy way how you fi

notsponge [240]

You have:

$a_1=3.5,\\ \\a_2=13,\\ \\a_3=41.5,\\ \\a_4=127.$

Find

$a_2-a_1=13-3.5=9.5,\\ \\a_3-a_2=127-41.5=28.5=9.5\cdot 3,\\ \\a_4-a_3=127-41.5=85.5=28.5\cdot 3=9.5\cdot 3^2.$

This gives you the rule how to find next terms:

$a_5-a_4=9.5\cdot 3^3,\\ \\a_5-127=256.5,\\ \\a_5=127+256.5=383.5.$

$a_6-a_5=9.5\cdot 3^4,\\ \\a_6-383.5=769.5,\\ \\a_6=383.5+769.5= 1153.$

$a_7-a_6=9.5\cdot 3^5,\\ \\a_7-1153=2308.5,\\ \\a_7=1153+2308.5=3461.5.$

Answer: next 3 terms are 383.5, 1153 and 3461.5.

6 0

3 years ago

PLEASE HELP!!<br> The length of a square is 4x-3, find the area in terms of x

umka2103 [35]

Answer:

16 $x^{2}$ −24x+9

Step-by-step explanation:

A=s^2

s=4x-3

A=(4x-3)^2

(a-b)^2=a^2-2ab+b^2

A=16x^2-2(12x)+9

A=16x^2-24x+9

8 0

2 years ago

Peter and his neighbor, Juan walk 2 miles to school each day yesterday peter walked to school in 27 minutes Juan walked the firs

a_sh-v [17]

Total distance from their home to school is 2 miles.

Peter covered this distance in 27 minutes yesterday. Since the rate of walking is the same today, Peter will arrive in school in 27 minutes today.

Juan covered 1 mile in 11 minutes yesterday. This means she will cover 2 miles in 22 minutes. Since the rate(speed) of walking of Jaun is also same as that of yesterday, Juan will reach the school in 22 minutes.

Thus, we can conclude that if Peter and Juan leave at the same time, Juan will reach the school 5 minutes earlier than Peter.

8 0

3 years ago

Holly invests $1000 in an account that pays an interest rate of 6.25%. How many years will it take for the account to reach $550

ivann1987 [24]

Answer:

It takes 72 years to get $5500.

Step-by-step explanation:

The amount in her bank account increases as she gets interest at a rate of 6.25% per annum.

Let A be the final amount , P be the principal amount , r be the rate of interest and t be the number of years taken.

A = P ( 1 + rt )

The final amount = $5500

Principal = $1000

r = 0.0625

Substituting the above values in the given equation,

5500 = 1000 (1 + 0.0625t)

t = $\frac{4.5}{0.0625}$

t = 72 years.

It takes Holly 72 years to get $5500 amount from her bank.

8 0

4 years ago

Write the equation of the line that has the indicated slope and contains the indicated point. express the final equation in stan

myrzilka [38]

Y-y1=m(x-x1)
y-6=9(x+3)
y-6=9x+27
9x-y=-6-27
9x-y=-33

6 0

3 years ago