Mathematics High School

Luke wants to send 21 parcels by the Express service.
He does the calculation 20 x £15 = £300 to estimate the cost.
(b)
Explain why Luke's calculation shows the actual cost will be more than £300
​

Answers

Answer 1

Answer:

Because he has to send one more parcel than the estimation.

Step-by-step explanation:

Related Questions


I NEED HELP ASAP!!!!!!!!

Answers

84!
All the sides are 18,24, and 30. Then the two triangles are 12.

Look at this equation. 3(x + 1) = 3x + Which number can be placed in the box that would create an equation that has an infinite number of solutions? OA) O OB) 1 C) 2 OD 3​

Answers

[tex]52 - x = 52[/tex]

[tex]x = 52 - 52[/tex]

[tex]x = 0[/tex]

A town's population went from 40,000 to 50,000. What was the percent of change in the population?

Answers

It would be a 0.8% change

Clear selection
Using the following sequence, identify the 10th term: 2,-4, 8, -16

Answers

-1024 should be right

Which characteristics best describe the undefined concept?
has length, but no width
Point
Line
Plane
2-dimensional
1-dimensional
O dimensions
location
flat surface
Intro
Done

Answers

Line. A line would have a length but has no width

I don’t understand what it means by find the mid points someone pls help I’m so behind

Answers

Most likely they’re asking you to find the point in the middle of the lines? If yes, use the formula ((x1+x2)/2,(y1+y2)/2). Hope this helps!

PLEASE HELP! :) IMAGE IS BELOW!! QUESTION: Describe a series of transformations that will transform ∆ABC to ∆A'B'C'.

Answers

Answer:

Dilation and translation.

Hope that helps!

Step-by-step explanation:

who uses y=mx+b in School

Answers

Everybody uses it in algebra.
people that are in algebra use it the most , they use it for finding slope and y intercept

Determine whether the following sequences are arithmetic. If so, identify the common
difference.
9, 15, 21, 27, ...

Answers

Answer:

Yes the sequence is arithmetic

The common difference is 6

Step-by-step explanation:

Determine whether the following sequences are arithmetic. If so, identify the common difference.

9, 15, 21, 27, ...

The sequence given in the above question is arithmetic because it follows the formula

Un = a + (n -1)d

Where

a= First term

n = Number of terms

d = Common difference

The common difference is calculated as the

Second term - First term

15 - 9

= 6

or the Third term - Second term

21 - 15

= 6

or the Fourth term - Third term

= 27 - 21

= 6

Therefore, the Common difference = 6

Avante walked 1 and 1/2 miles in 22.5 minutes. Avante walked at a constant rate. How long did it take him to walk 1 mile?

Answers

1 1/2 miles is the same as walking 1/2 a mile 3 times, so we can divide 22.5 minutes by 3 to find how long it takes to walk half a mile
22.5/3=7.5
We can then multiply 7.5 by 2 to get how long it takes to walk 1 mile
7.5 x 2 = 15 minutes
It takes Avante 15 minutes to walk 1 mile

Select all of the ordered pairs that are solutions to the system

Answers

Answer:

ALL of them

Step-by-step explanation:

They are all inside or on the border of the graphing solution

Find the GCF. Show work

Answers

Answer:The greatest common factors

Step-by-step explanation:

GCF of 18 : 27 , 9            

GCF of 36 : 36                                                                                                        GCF of 27 : 9

GCF of 54 : 18

GCF of 12 : 3

GCF of 24 : 3

GCF of 40 : 40

For the equation X equals 5T -3 what does X equal when T equals 12

Answers

Answer:x=57

Step-by-step explanation:

Mary Lost 30 pounds. Before her diet she weigh 180 pounds. What is the percent of change 

Answers

Answer:16.7%

Step-by-step explanation:

150         x

_____=______

180          100

150(100)=180(x)

15000=180x

__________

180         180

x=83.3 repeated

100-83.3=16.7

Solve the following quadratic equation using the quadratic formula.

Write the solutions in the following form, where r, s, and t are integers, and the fractions are in simplest form.

Answers

Answer:

x = (8-6i)/10

x = (8+6i)/10

Step-by-step explanation:

PLEASE HELP ME NOW!!!! DUE VERY SOON! PLEASE I BEG YOU!
Decorative glass balls are being stored in a box. Each ball has a radius of 2 1/3 cm.

How many balls will fit in each layer of a box that is 20 cm by 15 cm?


7 balls

12 balls

48 balls

Answers

Step-by-step explanation:

I'm trying to solve this problem but there's something wrong

What's the radius of one ball?

The value of x for the system is 1. What is the value of y?*
1 point
3x + y = 9
y = -4x + 10
1. Substitute the value of y in the first equation:
2. Combine like terms:
3. Apply the subtraction property of equality:
4. Apply the division property of equality:
3x + (-4x + 10) = 9
-x+ 10 = 9
-X = -1
x = 1
O y = 14
O y = 12
O y = 6
O y=3
When loesolved
system lisin
bstitution bet7
TA

Answers

The answer should be y=6

Car survey in a survey of 1200 people who owned a certain type of car,600 said they would buy that type of car again.What percent of people surveyed were satisfied with the car?

Answers

Answer:

50 percent

Step-by-step explanation:

Total number of people in this car survey = 1200

Total number of people who they would still buy same car type = 600 (these are the satisfied people)

The percentage = 600/1200 x 100

= 0.5 x 100

= 50 percent

So the percentage of satisfied people who would buy this type of car again is 50%

what is the surface area of a rectangular prism that has a height of 47 a length of 19 and a width of 6 IF U AREN'T SYDNEETEAL I WILL REPORT U

Answers

answer:

2578

step-by-step explanation:

A=2(wl+hl+hw)=2·(47·19+6·19+6·47)=2578

good luck

hopefully this helps

have a nice day :)

Write an equation in slope-intercept form (y = mx + b) , that perpendicular to y = 2x - 4 that passes through the point (3, - 3) .

Answers

Answer:

Step-by-step explanation:

perp. -1/2

y + 3 = -1/2(x - 3)

y + 6/2 = -1/2x + 3/2

y = -1/2x - 3/2

is it a function? and explain briefly why

Answers

Answer:

No

Step-by-step explanation:

Each output can only have one input

Quick answer please!

Answers

12 is the answer to this equation
x (3+2) = 36 + 24

x = 12

Solve for x- round to the nearest tenth- Trigonometry

Answers

Answer:

sin26=11/X

0.438371146789×x=11

X. = 11/0.438371146789

X=25.09289235975

What is the Mean of the data below 2,4,5,6,8,2,5, 6​

Answers

the answer is 4.75

Step-by-step explanation:

The mean of a set of numbers, sometimes simply called the average , is the sum of the data divided by the total number of data. Example 1 : ... There are 8 numbers in the set. Add them all, and then divide by 8 . so just add all you numbers and divide it by 8. simple

What is the least common denominator of
1/7 and 2/3

Answers

Answer:

Step-by-step explanation:

The LCD here is the smallest integer evenly divisible by both 7 and 3.  That number would be 21.  Then:

1/7 and 2/3 become 3/21 and 14/21.

is 0.24 greater than 0.42?

Answers

nope .42 is greater, .4 is closer to 1 then .2 have a great day and hope this helps

Answer:

yes it is greater

Step-by-step explanation:

Find the surface area of the prism.
3 cm
9 cm
6 cm
The surface area is
square centimeters.
7
need asap

Answers

Answer:

198

Step-by-step explanation:

rectangular side (9,3)

9x3=27

27x2= 54 (because there's rectangular sides)

Square end(6,3)

6x3=18

18x2=36(two square sides)

top&bottom sides

6x9=54

54xsquared2=108(two sides)

add all together

54+36+108=198cm(squared)

198


This is the answer

Do not factor by grouping. Solve 2(x-2)^1/3=x+2

Answers

Step-by-step explanation:

2(x-2)⅓=x+2

so we first cube each side,such that...

(2(x-2))⅓•³=(x+2)³

we get...

2(x-2)=(x+2)³

expanding...

2x-4=x³+6x²+12x+8

grouping....

x³+6x²+12x+8-2x+4=0

solving...

x³+6x²+10x+12=0

now you can use you calculator to solve for the possible values of x

I hope this will help

I need help on 12 please 14 points

Answers

Step-by-step explanation:

P = 6+6+5x-3 + 5x -3 = 10x+6

A = 6(5x-3) = 30x -18

Answer:

30x-18 is the area

the perimeter is 10x+6

Step-by-step explanation:

not enough info to solve for x, but we can still have a variable

6(5x-3)

distribute

6(5x)-6(3)

30x-18 is the area

the perimeter is 10x+6

Find the arc length of the partial circle.

Answers

Answer:

12.42 units

Step by step explanation:

Given,

length of the radius = 2 units

Therefore, arc length of the complete circle = 2 × 3.14 × 2 units = 12.56 units

Therefore, arc length of the partial circle = 3/4 × 12.56 units

= 12.42 units

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