I have no Idea of what to write, my teacher never taught me this. Please help

Answer:

30

Step-by-step explanation:

I hope this helps!

Answer:

area of the floor = 540*840.

=453600 cm sq.

area of the marbal piece = 1/2 * 40* 30 = 600 cm sq.

now,

no. of marble piece reqd. = 453600 / 600 = 756 marbal piece.

hope it helps u.

Answer:

a.  -0.01 < x - 8 < 0.01

b.  7.99 < x < 8.01

c.  see attachment

d. Bolt has to be greater than 7.99 mm and less than 8.01 mm to be within the margin of error of 0.01 mm.

Step-by-step explanation:

-0.01 < x - 8 < 0.01

-0.01 < x - 8   and   x - 8 < 0.01

7.99 < x                     x < 8.01

Write this as:   7.99 < x < 8.01

On graph the 7.99 and 8.01 are very near to each other and represented via open red circle.

Answer:

b. is 7.99 < x < 8.01

Step-by-step explanation:

Sorry, I don't know the other parts.

Answer:

3.375 or [tex]\frac{27}{8}[/tex] (they're the same)

I hope this helps!

Answer:

120 Kg : 72 Kg

Step-by-step explanation:

Sum the parts of the ratio, 5 + 3 = 8 parts

Divide the quantity by 8 to find the value of one part of the ratio.

192 Kg ÷ 8 = 24 Kg , thus

5 parts = 5 × 24 Kg = 120 Kg

3 parts = 3 × 24 Kg = 72 Kg

192 Kg = 120Kg : 72 Kg in the ratio 5 : 3

Answer:

120

Step-by-step explanation:

Okay you take the 24 students in each class

Then you take the 5 art classes in the school

Then you take the 5 and 24 and multiply them

And the sum of that is 120 and there

Answer:

70+95

70=2*5*7

95=5*19

70+95=(5*2*7)+(5*19)=(5*14)+(5*19)=5*(14+19)=5*(33)

5*33=165 and 70+95=165 also

Answer:

70+95

70=2*5*7

95=5*19

70+95=(5*2*7)+(5*19)=(5*14)+(5*19)=5*(14+19)=5*(33)

5*33=165 and 70+95=165

Step-by-step explanation:

Answer:

The equation is: 20 + 4.5h = 11 + 5.75h

The total cost of the services will be equal at 7.83 or 8 hours.

Step-by-step explanation:

This equation is correct because it shows that these two scenarios equal the same amount of money when there is a certain amount of hours, or "h."

Here is how we solve the equation;

20 + 4.5h = 11 + 5.75h <-----Here is the original equation.

Service A                                                        Service B

1. 20 - 20 + 4.5h                         =               11 - 20 + 5.75h

2.4.5h - 5.75h =  -1.15h                             -9 + 5.75h/5.75 =

3. -1.15h/-1.15 = h                                              9/-1.15 = 7.83

                  h = 7.83 or 8 hours when rounded to the nearest hour

Hope this helps! :)

Answer: 68 correct

Step-by-step explanation: 20% of 85 is the same thing as 85 times 0.2. that equals to 17. She got 17 wrong, so 85-17 equals to 68. She got 68 problems correct and 17 wrong.

The answer to this question is 68.

85 x  20%= 17

85 - 17 = 68

Answer:

$21.70

Step-by-step explanation:

I hope this helps!

Answer:

12718001

Step-by-step explanation:

ur code:)

Answer:

What is the cost of 1 hotdog?

Answer: $4.50

How many hotdogs can you buy for $18?

Answer: 4

Step-by-step explanation:

If $27 can buy you 6 hot dogs, to find the cost of one, we just divide.

27 divided by 6 = 4.5 ($4.50)

So 1 hotdog costs $4.50

If 1 hotdog is $4.50, and we want to know how much we can buy for $18, then we divide again.

18 divided by 4.5 = 4

So for $18, we can buy 4 hotdogs

Answer:

Rs 120

Step-by-step explanation:

Let MP = m

Discount = 25% of MP = m/4

SP = MP - Discount

= m - m/4 = 3m/4

If profit is 20%, CP = 3m/4 x 100/120 = 5m/8

=> Profit = 3m/4 - 5m/8 = m/8

Given Profit - Discount = Rs 15

=> |m/8 - m/4| = 15

m/8 = 15

m = Rs 120

Answer:

-2

Step-by-step explanation:

y/x=constant

3/24=y/(-16)

y=-2

Step-by-step explanation:

Imagining living a life for five hundred years in the future, can have two perspectives considering the reality of today's society.

Let us suppose that we currently overcome all challenges related to preserving the environment, sustainable consumption, violence, and racial discrimination. Well, considering that point of view, a typical day five hundred years from now would be a lot of fun, I imagine that we would have great biodiversity preservation centers, people would be more cordial with others, everyone would have access to education and essential rights, and we would use more bicycles as a means of transport, because even if they had already managed to invent teleportation, the bicycle would still be a good option for the practice of physical exercises.

Answer:

?

Step-by-step explanation:

Answer:

your doing the same thing i just did but the answer is slope is 2x and intercept is 3

Answer:

B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

It's answer B because the amount that is added if equal to that that isn't.

Answer:

 ___

= 80

I hope this helps you, and i hope you have a nice day.

Answer:

[tex]2 \sqrt{6} [/tex] (second option)

Step-by-step explanation:

[tex] \sqrt{24} [/tex]

[tex] \sqrt{ {2}^{2} \times 6 } [/tex]

[tex] \sqrt{ {2}^{2} } \sqrt{6} [/tex]

[tex] \sqrt{ {2}^{2} } = |2| = 2[/tex]

[tex] = 2 \sqrt{6} [/tex]

Answer:

2√6

Step-by-step explanation:

Because 2 multiplied by itself is 4

4 times 6 is 24

You multiply 2 by itself is because of the square root

Square roots are the opposite of exponents

Just like how addition is the opposite of subtraction

2^2 is 4

√4=2

Since 24 has a 4 in its multiple you can simplify it into 2 and put it on the outside

Hope this helps!

Answer:

$135

Step-by-step explanation:

10% of 150 = 15

150 - 15 = 135

Increased by 10%.

So, 150 x 0.10 = 15

The necklace was increased by £15.

The price before the increase is £150 - £15.

This amount is £135.

Answer:

63 is the least common multiple of 7 and 9

Step-by-step explanation:

There is no number smaller than 63 that could be used as the the least common multiple so multiply 7 and 9. My friend daffy duck told me, math is mystery.

Answer:

Yes

Step-by-step explanation:

When you substitute

y: 11

x: -2

Substitute:

y=x+13

11=-2+13

11=11

This is always true.

Answer:

The height of the tree is 14.85[tex]\bar 3[/tex] m

Step-by-step explanation:

The length of the shadow cast by the tree = 25 m

The length of the shadow cast by the signpost = 6 m

The height of the signpost = 3.5 m

Therefore, by similar triangles, we have;

Let θ, represent the angle formed by the line extending a line from the tip of the shadow, to the tip of the object and let x represent the height of the tree, we have

Tan(θ) = Opposite/Adjacent = Height of the object/(The length of the shadow)

∴ Tan(θ) = 3.5/6 = x/25

x = 25 × 3.5/6 = 14.58[tex]\bar 3[/tex]

The height of the tree = x = 14.85[tex]\bar 3[/tex] m

Answer:

The world speed record on water was set on October 8, 1978 by Ken Warby of Blowering Dam, Australia. If Ken drove his motorboat a distance of 1000 m in 7.045 s,

Step-by-step explanation:

i think this is it

Answer:

$332.55

Step-by-step explanation:

In order to figure our Cliff Alsworth's average monthly spendings on utilities, we need to add the amount he's spent each month, and divide it by the amount of months he bought utilities.

369.75 + 330.90 + 287.00 = 997.65

997.65 / 3 = 332.55

Therefore, the average Cliff's average payment for utilities is $332.55 per month. Hope you ace your test! :)

Answer:

The y intercept it 0 hours and 44

In this model y intercept represnts the lowest possible score obtainable due to lowest study.

The slope shows there is a direct correlation as x increases so does the value of y so it has a positive slope. All it represents is the more they studied the higher they score

Step-by-step explanation:

To find these out you have to use the strategy of P (parenthesis) E (exponents) M (multiplication) D (division) A (addition) S (subtraction)

3 - 4 x 2 The first thing you need to do is do the multiplication part first, since subtraction is the last thing you need to do. You multiply 4 and 2 and get the answer of 8, then subtract 3 which is 5

5 x 3 - 4 The first thing you need to do is multiplication 5 x 3 which equals 15 and then do 15 - 4 = 11

15 ÷ (3 x 5) x 2 The first thing you do is you do the P (parenthesis) which is (3x5) which equals 15. Then you multiply 15 with 2 which is 30 and then divide 30 with 15 which is 2

5 + 3 x 2 ÷ 6 First you need to do the Multiplication which is 3 x 2 which equals 6, and then you do the division, which is 6 ÷ 6 which is 1. Then add 5 to the 1 which is 6.

Your welcome and please give brainly :)