11. John is building a wall. When he uses 750 bricks, the wall is 6 metres long and 1.25m high.
John wants the finished wall to be 10 metres long and 1.25 metres high.
How many more bricks does John need to finish the wall?
(Total 3 marks)

11. John Is Building A Wall. When He Uses 750 Bricks, The Wall Is 6 Metres Long And 1.25m High.John Wants

Answers

Answer 1

Answer:

750 blocks = 6m long

x blocks = 10m long

750×10 = 6x

7500 = 6x

divide both sides by 6

7500/6 = 6x/6

1250 = x

x = 1250

.

. . 1250 blocks are needed to finish the wall of 10m long


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Which equation represents a line that is perpendicular to the y-axis?
SEE PIC

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Answer: c

Step-by-step explanation:

y = -8

f X ∼ B (10, 0.5 ) ( X is Binomial with n=10, p=0.5)

P(X = 9) =

(3 decimals)

X ∼ B (3, 0.5 )

P(X=1)=

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X ∼ B (4, 0.5) ,

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Step-by-step explanation:

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What is the inverse of the function f(x) = 2x + 1?
Oh(x) =
1
2
Ex-
o hx) = x + 2
1
h(x) = x-2
2
Oh(x) =
2
1x+2

Answers

Answer:

(1/2)x-1/2 hope this is the answer if it's not then srr

The inverse of the function is h ( x ) = (1/2)x - 1/2

What is a function rule?

The function rule is the relationship between the input or domain and the output or range. A relation is a function if and only if there exists one value in the range for every domain value.

A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.

Given data ,

Let the function be represented as f ( x )

Now , the value of f ( x ) is

f ( x ) = 2x + 1

The inverse of the function is calculated by taking the x coordinate and replacing it with y

So , the function now becomes

x = 2y + 1

On simplifying , we get

Subtracting 1 on both sides , we get

2y = x - 1

Divide by 2 on both sides , we get

y = ( x - 1 ) / 2

Now , replacing y with x , we get

h ( x ) = ( x - 1 ) / 2

h ( x ) = ( 1/2 )x - ( 1/2 )

Hence , the inverse of the function is h ( x ) = ( x - 1 ) / 2

To learn more about function rule click :

https://brainly.com/question/3760195

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Sierra used 4 pears and 12 apples to make a fruit salad. What is the
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the fruit salad?

Answers

Answer: 1:3

Step-by-step explanation: for every pear she uses 3 apples

Which expression does the model represent? Choose all the correct answers.
Pls help me

Answers

1/3 divided by 5 and 1/3 x 1/5 are both correct

What is the solution of each equation 4z=20: z=5 z=2 z=7 z=6

Answers

Answer:

43/6=z

Step-by-step explanation:

Can you plz help me plz

Answers

It’s C because 55 x 3 = 165 not 160 as stated in that answer.

What is the relationship between the two triangles at right? Create a flowchart to justify your conclusion. ​

Answers

Answer:

[tex]3^{2}+4^{2}=JH^{2} \\\\9+16=25=JH^{2} \\\\JH=\sqrt{25} =5\\\\[/tex]

[tex]AB^{2} +6^{2} =10^{2} =100\\\\AB^{2} =100-36=64\\\\AB=\sqrt{64}=8\\[/tex]

all three pairs of appropriate sides of a triangle are proportional, the ratio is the same.

10/5=8/4=6/3=2 so the triangles are similar

hope it helps

Is -6 greater than -5​

Answers

Answer:

-5 is greater than -6

Step-by-step explanation:

here is a drawing.

Some other person's sales tax is $1.61. How much was their subtotal?

Answers

i tried helping but failed ☹️ your guess is as good as mine

Answer: $17

Step-by-step explanation: so 9.5% is 0.095 as a decimal and 0.095 * 17 = 1.615 so we round the 1.615 into 1.61 :)

Round to the nearest 10,000: 634,727

Answers

Answer:

630,000

Step-by-step explanation:

not thing y ultimately

634727

Step-by-step explanation:

2 is in the 10,000 place so the number would stay the same


(Need help)
If there are 150 people born in the world every minute; how
many are born every Hour? Day? Year?

Answers

Step-by-step explanation:

150 x 60 = 9,000 every hour

9000 x 24 = 216,000 every day

216000x 365 = 78,840,000 every year

Answer:

Hour: 9,000 people

Day: 216,000 people

Year: 78,840,000 people

Step-by-step explanation:

In order to solve this, you need to identify how many minutes there are in an hour, a day, and a year:

Hour: 60 minutes

Day: 60 minutes × 24 hours = 1,440 minutes

Year: 60 minutes × 24 hours × 365 days = 525,600 minutes

Now, you need to multiply each of these numbers by 150 to find how many people are born every hour, day, and year:

Hour: 60 minutes × 150 people = 9,000 people

Day: 1,440 minutes × 150 people = 216,000 people

Year: 525,600 minutes × 150 people = 78,840,000 people

Find the median and mean of the data. Which reflects the best measure of the center? 23, 27, 60, 154, 17, 15, 28​

Answers

Answer:

Mean=16.75

Median=15.5

Mode=13

Range=16

Step-by-step explanation:

I need help with this right now pls

Answers

Answer:C

Step-by-step explanation:

One shirt is represented as “y”

He ordered four shirts totaling $44

y+y+y+y =$44

Answer:

1. x = 462.30m

2. c

Step-by-step explanation:

1. Let "x" represent how much Samantha earns, and "m" represent how many months she has worked.

Because she makes $462.30 per month, if we multiply that by "m" then we will get x.

2. Kyle spend $44 on four sweaters total, which would make the total cost be evenly distributed into 4 sections.  

How do I go about solving this?

Answers

Answer:

you want to bring down the numbers.. so try 3 for the second one

Step-by-step explanation:

HELP!!!!! What is the length plz help me besties

Answers

Answer: 30 inches

Step-by-step explanation:

20/8 = x/12

20(12) = 8x

240 = 8x = 30

what are ratios and what do they do and what is their purpose

Answers

Step-by-step explanation:

Ratios measure the relationship between two or more components of financial statements. They are used most effectively when results over several periods are compared. This allows you to follow your company’s performance over time and uncover signs of trouble.

A salesman earns 3% commission for everything he sells. Yesterday, he sold a large screen television for $2,400 and a video game system for $500. How much money did the salesperson make on commission?

Answers

2400 x 0.03 = $72
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Total commission = $87

What is the total surface area?​

Answers

Answer:

4352 i think

Step-by-step explanation:


1. The sum of two numbers is 140 and their difference is 20. What are the two numbers?

Answers

Answer:

Step-by-step explanation:

bret designs a page in a newspaper the page has a length of 36cm. an advert will take of the 1/3 length of the page. what is the length of the advert.​

Answers

Answer:

12 cm

Step-by-step explanation:

36 x 1/3 = 12 cm

Tyler is designing a banner that will welcome people to a festival. The design for the banner has an
area of 1.5 square feet. The actual banner will be a dilation of the design by a factor of 5. What will
the area of the actual banner be?

Answers

Answer:

7.5 sq ft

Step-by-step explanation:

1.5*5=7.5

The design is 1/5 of the actual size, so you just multiply by 5 to get the real size.

What would the measurement at the top be?

Answers

Hopes this helps please correct me if I am wrong:

Answer: 6cm
6cm, the reason for that is because of the invisible line that says 6cm if that line is the same length as the top; which it is, it would also be 6cm

So in conclusion the answer would be 6cm.

Hope this helps! Have a good one!❤️

merhaba arkadaşlar ben Avustralya geldi o ben türkçe bane yerdam edip ​

Answers

Answer:

Step-by-step explanation:

1 saat = 60 dakika

30 dakika = yarım saat

60 dakika = 1 saat

240 dakika = 240 / 60 = 4 saat

80 dakika = 60 + 20 = 1 saat 20 dakika

3(12+x)=90 what does x equal

Answers

Answer:

36+x=90

90-36=x

x=54

Step-by-step explanation:

Answer:

3(12+x)=90

12+x=60

x=48

Let me know if this helps!

Suppose one of your friends was absent from school on the day your math class learned about graphing rational numbers on the number line. Using complete sentences, explain to your friend how to graph the opposite of 6.2 on the number line.

Answers

Answer:

So i would ask this friend to draw a number line and label 6.2 on the number line. Then i would ask her if she knew what the opposite number of 6.2 is.

Yes- The number line will always continue, its indefinite. This means it can go forward or backwards. Make sure that your friend wrote 0. You always need a starting point. Then tell her to draw the tally marks forward the same way she did backwards. Locate the 6.2 and make all of the numbers negative.

The complete sentences to explain to your friend how to graph the opposite of 6.2 on the number line as shown below.

What is Number line?

Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.

Given that;

Suppose one of your friends was absent from school on the day your math class learned about graphing rational numbers on the number line.

Hence, The complete sentences to explain to your friend how to graph the opposite of 6.2 on the number line as;

Firstly I would ask this friend to draw a number line and label 6.2 on the number line. Then I would ask her if she knew what the opposite number of 6.2 is.

Then, Make sure that your friend wrote 0. You always need a starting point. Then tell her to draw the tally marks forward the same way she did backwards. Locate the 6.2 and make all of the numbers negative.

Learn more about the number line visit:

brainly.com/question/28223520

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Jamal has 30 ounces of a 20% saline solution. This means 20% of the solution is salt. He combines this solution with 25 ounces of a 30% saline solution.
What is the total amount, in ounces, of salt in the combined mixture? Please help and please provide an explanation?

Answers

Answer:

12.5 or 12 1/2 (may be wrong)

Step-by-step explanation:

First I set up a formula to solve how many ounces of salt there were out of 30,      

x/30=20/100, I crossed multiplied and got 5/30, next, I set up the same formula for how many ounces of salt there were out of 25, x/25=30/100, I got 7.5, the last thing I did was add them both together leading me to the answer 12.5 or 12 1/2. Hope this helps! Please say if I am wrong.

Find the length ,of a rectangular prism if the volume is 70 m,the width is 2 m , and the height is 7 m.

Answers

Answer:

A rectangular prism is the same as a cuboid.

Volume of a cuboid =LxWxH

70=Lx2x7

70=14L

L=70/14

L=5m

Nicholas is buying shirts for his baseball team. He will pay $9.50 for each shirt plus a
one-time fee of $22.50 for the design. Which equation can be used to find y, the total cost to buy x shirts?

A. y = 9.5x + 22.5

B. y = 22.5x + 9.5

C. y = 9.5x - 22.5

D. y = 22.5x - 9.5

Answers

Answer:

A

Step-by-step explanation:

cause x shirts times 9.5(the price of shirt)+ one time fee

Need help ASAP please--about estimate. which answer is correct. Please give me an opinion. Three students were asked to use estimation strategies to find a reasonable solution to this question: Ricky had 26 stickers before buying 7 from the store. Then he gave 8 to his sister. Estimate how many stickers he has left. From the choices below, select the student with the most reasonable solution.
a) Student A: Ricky has around 45 stickers left. Round 26 stickers to 40, 7 bought to 10, and 8 given to 5. Add 40 + 10 to get 50. Then subtract 50 − 5 to get the estimated answer of 45.
b) Student B: Ricky has around 30 stickers left. Estimate the sum of 6 from the 26 stickers plus 7 bought to be about 20. Add the 20 to the leftover 20 to get 40. Round 8 given to 10. Then subtract 40 − 10 to get the estimated answer of 30.
c) Student C: Ricky has around 10 stickers left. Estimate the sum of 6 from the 26 stickers plus 7 bought to be about 10. Add the 10 to the leftover 10 to get 20. Round 8 given to 10. Then subtract 20 − 10 to get the estimated answer of 10.

Answers

B, if I’m wrong then it’s C.
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