Mathematics High School

Isaac buys 17 anti-pollution masks for £5.25 each.
He pays with five £20 notes.
a) How much change should Isaac get?
Write your answer in £.

Answers

Answer 1

Answer:

£10.75

Step-by-step explanation:

£5.25 x 17 = 89.25

5 £20 notes is £100

£100 - £89.25 = £10.75

Answer 2

Answer: £10.75

Step-by-step explanation:

£5.25 x 17 = 89.25

5 £20 notes is £100

£100 - £89.25 = £10.75

Related Questions

Easy question, A group of 8 friends go to the movies. A bag of popcorn costs $2.99. How much will it cost to get one bag of popcorn for each friend?

Answers

Answer:

$23.92

Step-by-step explanation:

Answer:

$23.92

Step-by-step explanation:

8×2.99=23.92

Evaluate the expression when a=10, b=9, and c=4: 2a +3​

Answers

Answer:

23

Step-by-step explanation:

2(10) + 3

20 +3

23

HOPE IT HELPS YOU!

if x:y=3:5 find the ratio 3×+4y:8x +5y​

Answers

Answer:

29: 49

Step-by-step explanation:

Since x:y= 3:5,

[tex] \frac{x}{y} = \frac{3}{5}[/tex]

Cross multiply:

[tex]5x = 3y[/tex]

Divide by 5 on both sides:

[tex]x = \frac{3}{5} y[/tex]

[tex] \frac{3x + 4y}{8x + 5y} \\ = \frac{3( \frac{3}{5}y) + 4y }{8( \frac{3}{5}y) + 5y } \\ = \frac{ \frac{9}{5}y + 4y }{ \frac{24}{5}y + 5y } \\ = \frac{9y + 5(4y)}{24y + 5(5y)} \\ = \frac{9y + 20y}{24y + 25y} \\ = \frac{29y}{49y} \\ = \frac{29}{49} [/tex]

Thus, 3x+4y: 8x+5y= 29: 49.

I had to try a couple of times to get the answer. The answer is of ratio 29:49

A shop has an offer on jumpers as shown below.

Buy 4 jumpers and get 1 free!
Kara gets 6 jumpers.
After applying the offer, each one ends up costing £8.50 per jumper.
What is the regular cost of one jumper when not in this offer?


​

Answers

Answer:  

Step-by-step explanation:

1/10 + 2.5/10 = 3.5/10 of an hour to make one bracelet. Then change to 20ths so the numerator is a whole number.

Divide your time available by the time it takes to make one.                  

                                               21  

                                               4             = 420= 15 bracelets

                                               7                 28

                                              20

Answer:

10.20 regular cost

Step-by-step explanation:

8.50 x 6 = 51 total

51/5 = 10.20

Select all possible solutions for 2x + 7 < 3x - 5.

Answers

Answer:

7<x-5

12<x

x>12

Step-by-step explanation:

Given: f(1) = 3x– 7, 9(x) = 2x^2 – 3x +1, h(x) = 4x + 1, k(x) = –x^2+3
Find: (h o g) (x)

Answers

Answer:

(h o g) (x) = h(g(x))

Step-by-step explanation:

(h o g) (x) = h(g(x)) = 4(g(x))+1 = 4(2x^2 -3x + 1 ) + 1

= 4*2x^2 - 4*3x + 4*1 + 1

= 8x^2 - 12x + 4 + 1

= 8x^2 - 12x + 5

What is the sum of 3/15 + 2/5 as a fraction

Answers

3/15 + 2/5 = 3/5

hope this helps :)


Answer: 3/5

Step-by-step explanation:

(3/15)+(2/5)= (3+6)/15= 9/15= 3/5

Quadrilateral CDEF is similar to quadrilateral GHIJ. Find the measure of side HI.

Round your answer to the nearest tenth.

F

20

57-5

G

I

с

E

H

40

D

Answers

Answer:

The answer is below

Step-by-step explanation:

The question is not complete. But I would solve a similar question.

Solution:

A quadrilateral is a polygon shape with four sides and four angles.

Two polygons are said to be similar if they have the same shape and the ratio of their corresponding sides are equal to each other (that is their corresponding sides are in the same proportion).

Given that Quadrilateral ABCD is similar to quadrilateral GHIJ, hence their corresponding sides are similar.

[tex]\frac{AB}{GH} = \frac{AD}{GJ} \\\\\frac{x}{24} = \frac{4}{12} \\\\x=\frac{4*24}{12}\\\\x=8[/tex]

Answer: 21.9

Step-by-step explanation: Ayye if you on delta math just trust me I got it wrong and here’s the the answers trust me

Anybody who is good with word problems and (who has done these before) plz help thx!!! :DD

WILL MARK BRAINLIEST WHOEVER ANSWERS BOTH CORRECLTY :3!!!!

Answers

1. [tex] \frac{x}{15} = 3[/tex]

2. 8x = 216

Answer:

1. 45

2. 27

(please correct me if im wrong :D)

A rental car company charges $31 per day to rent a car and $0.13 for every mile

driven. Jocelyn wants to rent a car, knowing that:

She plans to drive 500 miles.

• She has at most $220 to spend.

.

Write and solve an inequality which can be used to determine d, the number of days

Jocelyn can afford to rent while staying within her budget.

Answers

Answer:

The number of days is at most 5 days

= d ≤ 5 days

Step-by-step explanation:

A rental car company charges $31 per day to rent a car and $0.13 for every mile driven. Jocelyn wants to rent a car, knowing that:

She plans to drive 500 miles.

• She has at most $220 to spend.

At most means Less than or equal to $220

The inequality for expressing this = ≤

Hence, the inequality which can be used to determine d, the number of days Jocelyn can afford to rent while staying within her budget.

$31 × d + $0.13 × 500 miles ≤ $200

The inequality is given as:

31d + 65 ≤ 220

Solving further

31d ≤ 220 -65

31d ≤ 155

d ≤ 155/31

d ≤ 5

Therefore, the number of days is at most 5 days

HELP PLEASE THIS IS HARD-!

Answers

Answer:

12

Step-by-step explanation:

[tex]\frac{2(2)}{2} +2(2)+\frac{2(6)}{2} =2+4+6\\ =12[/tex]

-2y - 7y + 8y + y - 7y

Answers

Answer:

-7y

Step-by-step explanation:

-2y-7y=

-9y+8y=

-y+y=

0-7y=

-7y

Combine like terms
-2y -7y + 8y +y - 7y
Solution : -7y

A car travels 55 miles per hour

1. The unit rate speed for this car is ___ miles per hour


2. if the car has driven 1/2 (0.5) hours, it traveled ___ miles

3. if the car has driven 1 1/2 (1.5) hours, it has traveled ___ miles

4 If the car has traveled 110 miles, it will take ___ hours

!! No explanation needed please! :) correct answer gets brainlesst !!

Answers

Answer:

1: 55

2: 27.5

3: 82.5

4: 6,050

Step-by-step explanation:

You are making lemonade. The recipe calls for 1 cup of lemon juice for 3 cups of water. Fill in the blanks to correctly complete the lemon juice to cups of water ratio to make the lemonade.​

Answers

Answer:

3 cups of lemon= 9 cups of water

5 cups of lemon= 15 cups of water

8 cups of lemon = 24 cups of water

Step-by-step explanation:

all you have to do is multiply the cups of water by the cups of lemon.

Factor out the monomial expression
f(x)=36x^4-49x^2

Answers

Answer:

f (x) = x(2exponent) (6x+7) (6x-7

Step-by-step explanation:

Help!!!! Question below.
Please.

Answers

Answer:

((4 x 16) ÷ 2) - 8

Step-by-step explanation:

There are many ways to solve this equation, but an easy one would be ((4 x 16) ÷ 2) - 8

4 times 16 = 64

64 ÷ 2 = 32

32 - 8 = 24

Hope this helps :)

For x=4 simplify 2x+(6-3)2
I need help

Answers

Answer:

Step-by-step explanation:

which line is parallel to one whose equation is y=5x+7

Answers

anything with y=5x

it can be any number as long as it has that slope :)

ex. y=5x-24
Answer: Whichever's line starts with y=5x

Explanation: Parallel is like being close to something, it's two lines that are going the exact same way but with different y-intercepts, the part of the equation that controls if the line is straight, slanted, etc. is the slope so to be parallel you need the same slope, so the answer is any equation that starts with y=5x.

please help me on this will give you brainliest!!

Answers

Answer:

9+(c*2)

im pretty sure this is correct, sorry for misreading it at first <3

In order to solve the equation below, what would be a valid first step?

4(x+8) =34−2x
A. Simply x + 8 to 8x.
B. Distribute the 4.
C. Subtract x from both sides.
D. Subtract 8 from both sides.

Answers

B. Distribute the 4
4x+32=34-2x
4x+2x=34-32
6x=2
X=2/6
X=1/3

3. State if each of the labeled points is a local min, max or
neither.
Is the function even or odd? Explain.

Please explain right I’m giving 100 points in this that means the 2 people Who answers this will get 50 each

Answers

Answer:

(5, 7) is a local maximumFunction is odd

Step-by-step explanation:

As we see on the graph:

point (1,2) on the falling section,point (3,3) on the rising section,point (5,7) on the top section,

... of the local intervals. therefore only point (5, 7) is a local maximum.

Absolute minimum is  - oo, absolute maximum is  + oo

A function is even if its graph is symmetric with respect to the y-axis. A function is odd if its graph is symmetric with respect to the origin.

The given function is odd as per above definition

mr. john says that a new automobile decreases 37 1/2 of its value the first year. At this rate, how much will the first value of a $4568 car drop in the first year?

Answers

Answer:

it will drop to 2855 I believe

PLEASE HELP
Special Right Triangles and Pythagorean Theorem
1. Find the length of the missing side.Leave your answer in the simplest radical form.
please show work

Answers

Answer:

x = 14

Step-by-step explanation:

15² = x² + 6²

225 = x² + 36

189 = x²

√189 = x

x = 13.7

x = 14

Cheyenne bought 60 tickets for rides at an amusement park. Each ride costs 4 tickets, and Cheyenne has been on x rides so far. Write an expression is equivalent to the number of tickets that Cheyenne has left?​

Answers

Answer:

x=number of rides taken

y=number of tickets left

60=4(x)+y

A ladder is 12 metres long . It leans against a wall with one end on the ground 7 metres from the wall. The other end just reaches a windowsill. Calculate the height of the windowsill above the ground.

i need an explanation please...

Answers

Answer:

window sill height =9.75 meters

Step-by-step explanation:

Ladder^2=height^2+length^2

12^2=height^2+7^2

144=height^2+49

height^2=144-49=95

height=9.75

What is the distance between (-4,1) and (1, -3)?

Answers

Answer:

[tex]\sqrt{41}[/tex]

Step-by-step explanation:


Travis reads 21/4 pages of his history assignment in 7 1/2
minutes. Which TWO statements are correct?
A)
The unit rate is 7 pages per minute.
B)
7
The unit rate is
10
page per minute.
0)
The unit rate is 51 pages per minute.
D)
At the same rate, Travis reads 40 pages in 28 minutes.
E)
At the same rate, Travis reads 60 pages in 28 minutes.

Answers

Answer:

its B and E i just did the question and got it right

Answer:

B and D

Step-by-step explanation:

Find the value of x.

I need to show my work.

Thank you~~~~~~~~

Answers

Answer:

180-72-72=36

90-36=54

180-54-54=72

72=7x-12

84=7x

x=12

Step-by-step explanation:

In the old British money system, 5
shillings was equal in value to 1
crown. Emily had 45 shillings. What
was the value in crowns?

Answers

I think the answer will be 9 crowns because 45/5=9

What is the slope of y= -4x-3​

Answers

m=-4 hope this helps!!
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