MATHEMATICS HIGH SCHOOL

Toilet rolls come in packs of 4 and 9The 4 pack is priced at £2.04
The 9 pack is priced at £4.68
By calculating the price per toilet roll, determine which pack is better value . Show your working

Answers

Answer 1
Answer:

Answer:

4 pack priced at £2.04 is better value deal.

Step-by-step explanation:

The 4 pack is priced at £2.04

cost of one pack will be equal total price divided by no. of roll in one pack

cost of one pack will be  £2.04 /4 = £0.51

The 9 pack is priced at £4.68

cost of one pack will be  £4.68 /9 = £0.52

As price per toilet roll for  4 pack is  £0.51 which is less than

price per toilet roll for  9 pack which is  £0.52

4 pack priced at £2.04 is better value deal.
Answer 2
Answer:

Answer:

4 pack priced at £2.04 is better value deal.

Step-by-step explanation:

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5x+2y=7 7x+2y=5 i need it right
suzanne wants to put a fence around her square garden. if the garden covers an area of 100 ft, how many feet of fencing does she need?

X squared + ysquared-6y=-5

Answers

Standard Form of the circle:  

x^(2) +(y-3) ^(2) =14

For y:

y=3 (+/-) √(-x) ^(2) +14

For x:

x=\sqrt{-y ^(2) } +6y+5 and - √(-y) ^(2) +6y+5

A pie was cut into 8 equal slices. If Ruben ate 3/4 of the pie, how many slices did he ate? Explain your answer using a number line and words.

Answers

Answer:

Step-by-step explanation:

A pie was cut into 8 equal slices. Ruben ate 3/4 of the pie.

We have tell how many slices Ruben ate.

Since a pie was cut in 8 pieces that means 1 piece is 1/8th part of pie.

Since Ruben ate 3/4 of pie that means 6/8 of pie was finished by Ruben.

This clearly says that out of 8 pieces 6 pieces Ruben has eaten.
If Ruben ate 3/4 of the pie, that means that he ate 6/8 of it, because 3/4 = 6/8, that is, he ate 6 of the 8 slices of the pie.

X = y - 3x + 3y = 13

What is the solution to the system of equations?

A) (1, 4)

B) (4, 1)

C) (7, 4)

D) (2.5, 5.5)

Answers

If you would like to solve the system of equations, you can do this using the following steps:

x = y - 3
x + 3y = 13 ... y - 3 + 3y = 13
___________
y - 3 + 3y = 13
4y = 13 + 3
4y = 16
y = 4

x = y - 3 = 4 - 3 = 1

(x, y) = (1, 4)

The correct result would be A) (1, 4).

The equation of line c is y=-4/3-4 Line d includes the point (4,-4) and is perpendicular to line c . what is the equation of line d?

Answers

Assuming that you mean that the equation of line c is

y=-(4)/(3)x-4

We can deduce that the slope of line c is

m_c=-(4)/(3)

since the slope is the coefficient multiplying x in the equation of a line. Since we want line d to be perpendicular to line c, their slope must be in the following relationship:

m_cm_d=-1 \iff m_d=-(1)/(m_c)=-(1)/(-(4)/(3))=(3)/(4)

So, line d has slope 3/4 and passes through point (4,-4). Use the equation

y-y_0=m_d(x-x_0)

to find the equation of line d, where

x_0=4,\quad y_0=-4,\quad m_d=(3)/(4)

Can anyone help its due in 10 minuets!

Answers

Answer:

x=30⁰

Step-by-step explanation:

4x-55+3x+25=180

7x-30=180

7x=210

x=30⁰

Proof

3(30)+25=115

4(30)-55=65

115+65=180⁰

Bill says that he can add 23 and 40 without regrouping, Do you think Bill is correct? Explain your answer

Answers

Yes, Bill is correct.

Given that the sum of the ones column is lower than 10 he does not need to regroup.

You have to regroup when the additions of the digits of the same place add up more than ten. For example adding 23 and 47.

In the columns of ones you have 3 + 7 = 10, then you write 0 in the ones column and carry the one to the next column (to the left). Now, regrouping, you will have 1 + 2 + 4 in the columns of the tens to obtain 7.  And the result is 70.
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