1. i’ll give you brainliest if u get it right

Answer:

i think they are simplified and i don't know what a restriction is

First, we take the first given information: 200 pieces = £76. Since the other unknowns are expressed in pence "p", we convert this amount to "p" = 76 x 100 = 7600p.

The information on "x" and "y" gives us 2 equations:

first:

x pieces + y pieces = 200 pieces (or x + y = 200)

placing "x" in terms of "y" gives us x = 200 - y

in terms of "y": y = 200 - x

50p(x) + 20p(y) = 7600p (or 50x + 20y = 7600)

solving for "x" gives:

x = (7600 - 20y) / 50

substituting y from our first equation gives:

x = (7600 - 20(200 - x)) / 50

x = (7600 - 4000 + 20x) / 50 (distribute - remember to distribute the negative sign)

x = (3600 + 20x) / 50 (simplify)

x = 360/5 + (2/5)x (subtract (2/5)x from both sides)

(3/5)x = 360/5

3x = 360

x = 120 (rulers bought)

substituting into our first equation:

y = 80 (pens bought)

check our solution using the second equation:

50x + 20y = 7600

50(120) + 20(80) = 7600

6000 + 1600 = 7600 (correct)

therefore:

x = 120 rulers Barry bought

y = 80 pens Barry bought

The number of rulers is 120 and the number of pens are 80 in number, bought by Barry.

The four fundamental operations of arithmetic are addition, subtract, multiply, and division of two or more numbers. Included in them is the study of integers, especially the order of operations, which is important for all other aspects of mathematics, notably algebra, information management, and geometry.

x + y = 200 pieces

x = 200 - y  (i)

y = 200 - x  (ii)

50(x) + 20(y) = 7600p

Solve the equation for x,

x = (7600 - 20y) / 50

Substitute y from the equation,

x = (7600 - 20 (200 - x)) / 50

x = (7600 - 4000 + 20x) / 50

x = (3600 + 20x) / 50

x = 360/5 + (2/5)x

(3/5)x = 360/5

3x = 360

x = 120 is the number of scales.

Substitute the value of x in the first equation,

y = 80 is the number of pens.

To know more about arithmetic operation:

https://brainly.com/question/13585407

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Answer:

NQ = 9cm

Step-by-step explanation:

If you divide 24 with 6, you get 4. So I divide 36 with 4, which gave me 9.

9514 1404 393

Answer:

Step-by-step explanation:

The first attachment shows the sort of geometry involved. The line of sight from the top of the lighthouse makes a tangent with the earth's surface at the horizon (neglecting optical effects due to the atmosphere).

The hypotenuse of the relevant triangle is (r+h), and the angle is adjacent to the radius, r. Then the cosine relation applies:

  Cos = Adjacent/Hypotenuse

  cos(α) = r/(r+h)

We note that the radius is in km, and the length h is given in meters, so we need to do a conversion to put the numbers in this formula. We don't care so much about the angle itself, but we need its value to find the length of the arc along the earth's surface. That is ...

  s = r·α

so, the distance of interest is found from ...

  cos(α) = 6367/(6367 +0.025)

  r·α = 6367·arccos(6367/6367.025) ≈ 17.84 . . . km

The horizon is about 17.8 km from the observer.

__

The second problem requires we find the height value that makes the distance 32 km.

  32 = r·α = 6367·arccos(6367/(6367 +h))

Dividing by the earth's radius and taking the cosine, we have ...

  cos(32/6367) = 6367/(6367 +h)

  h = 6367 -6367/cos(32/6367) ≈ 6367.0804 -6367 = 0.0804 . . . km

The cliffs must be about 80.4 meters high for it to be possible to see that distance.

Answer:

$15

Step-by-step explanation:

Answer:

15 cm

Step-by-step explanation:

Given that :

Reading at one end, initial reading = 3.5 cm

Reading at the other end, final reading = 18.5 cm

Length of needle :

Final Reading - Initial reading

18.5cm - 3.5cm

= 15cm

Answer:

78.53

Step-by-step explanation:

[tex]\pi[/tex] x [tex]5^{2}[/tex]

Answer:

78.5

Step-by-step explanation:

The formula for the area of a circle is A=πr^2.  The radius, (r) is half of the diameter.  The diameter of this circle is 10 in, so the radius is 5 in.  Plug 5 into the formula A=πr^2 to get A=π5^2.  Square 5 to get 25 and plug it back in the formula to have A=25π.  Multiply pi (π, 3.14) by 25 to get 78.5.  

Answer: $3.60

Step-by-step explanation:

If you need 4.8 kilograms of potatoes and each kilograms costs $0.75, then we should multiply 0.75 by 4.8 to find the cost of 4.8 kilograms of potatoes.

4.8 x 0.75 = 3.6.

Therefore, the cost of 4.8 kilograms is $3.60 dollars. I hope this helps, and good luck!

Answer:

there was a difference between the 40 and 120 which was 80 so if there are 500 peach trees he would need to plant 580 because you add the difference to the total. The answer is 580 apple trees

Step-by-step explanation:

plz mark brainliest

Answer:

system of equations

Answer:

System Of Equations

Step-by-step explanation:

Answer:

sorry

Step-by-step explanation:

Answer:

5.123 × 10-3

m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

I hope this helps.. :D

Answer:

-3

-12

-5

Step-by-step explanation:

A negative number with another negative symbol put onto it is positive because both negative symbols cancel each other out

So -(-3) = 3

-(-12) = 12

-(-5) = 5

Answer:

x=3, y=2

Step-by-step explanation:

Answer:

c. 23 packages

Answer:

Ali could use 6 tables. There would be 3 adults

and 1 child seated at each table.

Step-by-step explanation:

GCF to find the number of tables:

18: 1, 2, 3, 6 , 9, 18;

6: 1, 2, 3, 6 .

Answer: Einstein primarily emigrated to the United States because he had a Jewish background, and Adolf Hitler, who became Germany's chancellor in 1932, was about to adopt Anti-Semitic policies.

Hope this helps!!

Sorry if it's incorrect!!

Have a nice day!!

c on edge

wanted to avoid being a victim of anti-semitism

Expert Checked

Me too there's no math problem...

Things you could try to fix this:

Try asking your teacher what is the work?

Try searching or contacting main educator on your work files.

Figure out what your teacher told you

Try calling the school or teacher.

Etc.

Answer:

64 yd

Step-by-step explanation:

[tex]\frac{x}{40} =\frac{32}{20} \\x=\frac{32}{20} \times 40=64 yd[/tex]

Answer:

i'm pretty sure that it's y=-2x+1

Step-by-step explanation:

first we solve for the slope of the line:

we have the points (-1,3) and (3,-5). So we write an equation like so:

3 - -5      

-1 - 3    

3/-1 - -5/3. solving that, you get 8/-4, and 8 divided by -4 is -2, so thats our slope.

now all we've got to do is get the y intercept. the way i found it was i graphed the line, put a dot on the points that we have ( (-1,3) and (3,-5) ) and you should

get 1 as the point on the y axis. again, i myself am not a pro or anything so if its not the correct answer i am so sorry. <3

Answer:

84 and 140

Step-by-step explanation:

Jack chooses two numbers between 50 and 150

The two numbers have a Lowest Common Multiple (LCM) of 420

Factors of 420 between 50 to 150

= 60, 70, 84, 105, 140

We are also told that:

They have a Highest Common Factor (HCF) of 28

Hence, we find out of the factors above, which numbers can be divided by 28 without having any remainder.

60/28 = 2.1428571429

70/28 = 2.5

84/28 = 3

105/28 = 3.75

140/28 = 5

Therefore, the two numbers are

84 and 140

Answer:

50(x+5)

Step-by-step explanation:

Answer: 50(x+5)

Step-by-step explanation:

To factor this expression, simply find the GCF of 50 and 250, 50.  Then divide both terms by the GCF(50) to get: 50(x+5)

Hope it helps <3 :D

Answer:

(1,-5)

Step-by-step explanation:

Answer:

Y = 30x + 100

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Answer:

3.08

Step-by-step explanation:

1/2(6.2-0.04)

1/2(6.16)

6.16/2

3.08

What is the correct answer for the mathematics equation 9 + 10 = is that to simple or too hard to answer

9 + 10 would = 19

I hope this helps~