All categories

4 years ago

30p:£2.70 simplified

Mathematics

1 answer:

nevsk [136]4 years ago

7 0

Answer:

3:10

Step-by-step explanation:

30:270

Divide them both by 10 as ten goes in both numbers

3:10

You might be interested in

Express the equation y= x² + 10x +30 in the form y= a(x - h)² +k

nikklg [1K]

Answer:

$\large \boxed{\sf \ \ y=(x+5)^2+5 \ \ }$

Step-by-step explanation:

Hello, please find my work below.

$y=x^2+10x+30\\\\\text{*** We can notice that ***}\\\\\text{*** } x^2+10x = x^2+2\cdot 5 \cdot x=(x+5)^2-5^2=(x+5)^2-25\\\\y=x^2+10x+30=(x+5)^2-25+30=(x+5)^2+5\\\\$

a = 1

h = -5

k = 5

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

3 0

3 years ago

What is the answer to 18x-5 < 3(6x-2) ?

Marina86 [1]

Answer:

No solution

Step-by-step explanation:

18x - 5 < 3(6x - 2) Distribute the 3 to (6x - 2)

18x - 5 < 18x - 6

-18x -18x Subtract 18x from both sides

-5 < -6 There is no solution because -5 is not less than -6.

If this answer is correct, please make me Brainliest!

5 0

4 years ago

BELOW NOT ALL Two liters of hot cocoa mix are being spilt equally amongst six siblings. How many liters of hot cocoa will each s

dybincka [34]

Answer:

Step-by-step explanation:

Do 2/6

And get the answer of 0.3 liters and or less than one liter per sister

6 0

3 years ago

Use the forward substitution method to obtain the closed form formula for the recurrence relation

german

Answer:

$a_n = 2^n -1$

Step-by-step explanation:

We are given the following information:

$a_n = 2a_{n-1} + 1, a_0 = 0$

We will now evaluate values for n =1, 2, 3, 4, 5 and so on.

By forward substitution method:

$a_1 = 2a_0 + 1 = 0 + 1 = 1\\a_2 = 2a_1 + 1 = 2(1) + 1 =3\\a_3 = 2a_2 + 1 = 2(3) + 1 = 7\\a_4 = 2a_3 + 1 = 2(7) + 1 = 15\\a_5 = 2a_4 + 1 = 2(15) + 1 =31$

If we continue in this manner, we can see a general trend and we can say that

$a_n = 2^n -1$

This is the solution for given recurrence relation.

4 0

3 years ago

A circle of radius 10cm had a hole cut out of its centre to form a ring. Find the radius of the hole if the remaining area is 50

valentina_108 [34]

Answer:

7.07cm

Step-by-step explanation:

A=πr2

= 100 π

= 314.159265359/2 (squared)

50% = 157.07963268cm ^2

We look for radius in the area formula

A=πr2

(A / π ) = 157.07963268/ 3.14159265359 = √50 = 7.07106781187

We do not need to half this as already has been squared.

6 0

3 years ago