Mathematics High School

A contractor needs to buy nails to build a house. The nails come in small boxes and large boxes. Each small box has 100 nails and each large box has 350 nails. The contractor bought a total of 9 boxes that have 2400 nails altogether. Write a system of equations that could be used to determine the number of small boxes purchased and the number of large boxes purchased. Define the variables that you use to write the system.

Answers

Answer 1

Answer:The system 150x+400y=1950 and x = y+2 could be used to determine the number of small boxes and large boxes ordered where x represents the number of small boxes and y represent the number of large boxes.

Step-by-step explanation:

Answer 2

Answer:

Let s = the number of small boxes purchased

Let l = the number of large boxes purchased

100s + 350l= 2400

s+l= 9

Related Questions

Find the surface area

Answers

Answer:

352 m

Step-by-step explanation:

The area of a trapeze is (the biggest base + the smallest base) × height / 2

The area from rectangles are side a × side b

Trapeze: (6+12)×4/2 = 36

Rectangles: 5 × 10 = 50

6 × 10 = 60

12 × 10 = 120

There are two trapeze andtwo rectangles with the samesize, so you double their area:

2×36 + 2 × 50 + 60 + 120 = 352 m

The cost of 2 pounds
of coffee is $0.
True or False

Answers

Answer:

false

Step-by-step explanation:

the graph shows that 2 pounds of coffee would be about $4

Answer:

false.

Step-by-step explanation:

because if you look 1 pounds is 2 dollars

Darius is studying the relationship between mathematics and art. He asks friends to each draw a "typical” rectangle. He measures the length and width in centimeters of each rectangle and plots the points on a graph, where x represents the width and y represents the length. The points representing the rectangles are (6.1, 12.0), (5.0, 8.1), (9.1, 15.2), (6.5, 10.2), (7.4, 11.3), and (10.9, 17.5). Which equation could Darius use to determine the length, in centimeters, of a "typical” rectangle for a given width in centimeters?

y = 0.605x + 0.004
y = 0.959x + 0.041
y = 1.518x + 0.995
y = 1.967x + 0.984

Answers

Answer:

its the 4th one

Step-by-step explanation:

Answer:

the answer is C y=1.518x+0.995

Step-by-step explanation:

What is the value of x^2/y^1 when x=10 and y=5?

Answers

The value is 20. 10^2 = 100 and 5^1 = 5. 100/5=20

Fill in the blanks below in order to justify whether or not the mapping shown represents a function

Answers

Answer:

not a function because -3 maps to two different values 5 and 6

Step-by-step explanation:

The product of x and 8 is not less than 16

Answers

Answer:

x ≥ 2

Step-by-step explanation:

The inequality would be: x * 8 ≥ 16

8x ≥ 16

x ≥ 16/8

x ≥ 2

Hope this helps!

Answer:

x*8 > 16

Step-by-step explanation:

product  means multiplaction and x and 8 are being multiplied so x*8 and the answer is not less than or at least 16

There are 4.5 litres of milk in a pot. The chef stirs in 2.5 g of salt and 1.2 litres of water. How much liquid is in the pot?

Answers

Answer:

5.7 litres

Step-by-step explanation:

The salt is not a liquid so you do not need to add it in.

4.5 litres + 1.2 litres = 5.7 litres

PLSS HELP ME ITS WORTH 20 POINTS!!

Answers

Answer:

suplementary

Step-by-step explanation:

Supplementary because the other one said

By the distributive law 3 ✖ 2 + 3 ✖ 4 =

1. 9 + 8
2. 9 ✖ 8
3. 3 + 8
4. 3 ✖ 6
Need this quick as hell 25 points

Answers

i think it would be 2, 9 x 8

(1.9)2 standard form

Answers

Answer:

-4

Step-by-step explanation:

hope this helps

have a great day/night :)

Find the area of a parallelogram if a base and corresponding altitude have the indicated lengths.
Base 3 1/2 feet, altitude 3/4 feet.

Answers

Answer:

below

Step-by-step explanation:

base * height = area of a parallelogram

7/2 × 3/4

=21/8 feets

MATH HELP PLEASE ANSWER AND SHOW WORK ITS DUE SOON THANKS

Answers

Answer:

the area of the circle is the number of boxes in the box minus no .of boxes in circle....

hay claudia do u remember me

y = one-third (x + 2)

Answers

Answer:

Step-by-step explanation:

according to the question equation is

y=1/3*(x+2)

y=x+2/3

Solve the equation to find where the treste ground levelEnter your answers from least to greatest and round to the nearest The meets the ground at and

Answers

Answer:

The trestle meets ground level at 0.875 units and 9.125 units

Step-by-step explanation:

Poorly formatted question.

The given equation is:

[tex]y = -x^2 + 10x - 8[/tex]

Required

The point where the trestle gets to the ground level

To do this, we set [tex]y = 0[/tex]

So, we have:

[tex]-x^2 + 10x - 8 = 0[/tex]

Multiply through by -1

[tex]x^2 -10x + 8 = 0[/tex]

Solve using quadratic formula:

[tex]x= \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]

Where:

[tex]a = 1; b =-10; c = 8[/tex]

So, we have:

[tex]x= \frac{-(-10) \± \sqrt{(-10)^2 - 4*1*8}}{2*1}[/tex]

[tex]x= \frac{-(-10) \± \sqrt{68}}{2*1}[/tex]

[tex]x= \frac{-(-10) \± 8.25}{2}[/tex]

[tex]x= \frac{10 \± 8.25}{2}[/tex]

Solve the fraction

[tex]x= 5 \± 4.125[/tex]

Split

[tex]x= 5 + 4.125\ or\ x= 5 - 4.125[/tex]

[tex]x= 9.125\ or\ x= 0.875[/tex]

What is the range of the function in this table?
х y
1 2
2 4
3 3
4 2

a. (1,2), (2,4), (3,3), (4,2)
b. (1,2)
c. {1,2,3,4}
d. {2,3,4}




Answers

Answer:

4 is the range of the function

please help calculate

Answers

Step-by-step explanation:

the answer is in the above image

Help plsss!

find the area of the shaded region

Answers

I think it’s about 134.13 ft

to find the circle the formula is pi times the radius squared so:
12.5 x 12.5 = 156.25
156.25 x pi ≈ 490.8738 ft squared

to find the square it’s base x height so:
25 x 25 = 625

then to find the shaded part you just find the difference:
625 - 490.87 = 134.13 ft

In the diagram below,

Answers

Answer:

<H = 40

Step-by-step explanation:

Complementary angles add to 90 degrees

2x+10 + x+20 = 90

Combine like terms

3x+30 = 90

Subtract 30

3x+30 -30 = 90-30

3x = 60

Divide by 3

3x/3 = 60/3

x = 20

<H = x+20 = 20+20 = 40

help very easy 5th grade math im in rush please help im very tired

Answers

Answer:

D

Hope that this helps!

starts at +8 and move -3 . starts at -8 and move-3 . start at 0 and -3. starts at +4 and move -4.​

Answers

Answer:

end -8 and move -3 . start at -8 and move -3

PLEASEE HELP I NEED ASAP TY SM

Answers

Answer:

51

Step-by-step explanation:

166-13=153

153/3=51

51

sorry if that didn't make sense, that is just how i solved it

3. Sam has a total of 22 quarters and nickels. The coins total value is $2.90. How many quarters and nickels does he have?​

Answers

Answer:

22?

Step-by-step explanation:

2.90=q(.25)+n(.05)
whats q?
q=22-n
2.90=(22-n)(.25)+n(.05)
solve for n...
n=13
so we have 13 nickels
q=22-13=9



Matt is saving to buy a new motorcycle. If he deposits $70 at the end of each month in an account that pays an annual interest rate of 3.5%, how much will he have in
60 months? Assume that the compounding is being done monthly

Answers

Answer:

bro I don't know. I just need the points so I can keep getting answers. good luck tho I guess.

4 bottles of water cost 10 dollars at a music festival.

Based on the ratio, how much does 3 bottles of water cost?

Answers

Answer:

7 dollars and 50 cents, price per bottle is 2 dollars (you can get this answer by dividing 10/4) and 50 cents multiply that by 3 and you get the answer, 7 dollars and 50 cents.

Step-by-step explanation:

I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.

HELPP!!!! 30 POINTS!!! Points A and B are on the different sides on line l, the distance between point A and the line l is 10 in, the distance between point B and line l is 4in. What is the distance between the midpoint O of the segment AB and the line l?

Answers

OC = 3 in

Refer to the attachment for complete explaination

Is this a function? Or is it not a function ? I’ll give brainlist.

Answers

Answer:

its a function something to remember is if anything on the y line (up and down) touches its not a function otherwise it is

Step-by-step explanation:

someone help plsplspls

Answers

Answer/Step-by-step explanation:

Volume of a cone = ⅓*π*r²h

Where,

Radius (r) = 7 mm

Height (h) = 8 mm

Plug in the value into the equation

V = ⅓*3.14*7²*8

V = ⅓*3.14*49*8

V = 410.293333

V ≈ 410.3 mm³ (nearest tenth)

What is the same as writing that “Angles 5 and 6 are supplementary adjacent angles”?


Angles 5 and 6 are not next to each other and sum up to 180°.

Angles 5 and 6 are not next to each other and sum up to 90°.

Angles 5 and 6 are next to each other and sum up to 180°.

Angles 5 and 6 are next to each other and sum up to 90°.

Answers

Answer:

Angles 5 and 6 are next to each other and sum up to 180°.

Step-by-step explanation:

supplement means adding up to 180

Angles 5 and 6 are next to each other and sum up to 180°.

Step-by-step explanation:

supplement means adding up to 180

Can someone simplify? I'm confused-

Answers

(64/56)^2 x (1/343) x 7^-9

=9.44x10^-11

Find the center and the radius of the circle given this equation:
2
x + 4x + y ² -10y +20=0

Answers

Answer:

vertex: (5/6,5)

focus: (- 2/3, 5)

axis of symmetry: y = 5

directrix: x = 7/3

Step-by-step explanation:

use the vertex form to determine the values of a.h. and k and use these values to find the direction the parabola opnes, vertex, foucs, axis of symmetry, and directrix

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