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Alika [10]
3 years ago
13

7x2+2y-x2+18x+5-3y Simplify

Mathematics
2 answers:
KonstantinChe [14]3 years ago
8 0
Answer
30x-y+5

If you need to show work I have no problem with putting it in the comments:)
scoray [572]3 years ago
7 0

Answer:

6x^2-1y+5+18x

Step-by-step explanation:

7x^2+2y-x^2+18x+5-3y

6x^2-1y+5+18x

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How many 1/3 inch cubes does it take to fill a box with the with with 2 and 2/3 in blanks 3 1/3 in in height to 1/3
sveticcg [70]

Answer:

224

Step-by-step explanation:

To make this easier, multiply all the measurements by 3, so you have 1 inch cubes with a box of 8 in. width, 4 in. length, and 7 in. height. This makes it a lot easier to understand as it is finding the volume of the cube, which is width x length x height. This is 8 * 4 * 7 which is 224. - Madison P.

7 0
3 years ago
Which situation is respresented by the inequality below
mihalych1998 [28]
X = greater than or equal to six

Because you divide the 6 from each side

6x > 36
-----------
6. 6

Which equals x = greater than or equal to six


It has to be greater than or equal to because it had the line under it which means equal to and has the open mouth of the comparison sign facing the left which is greater than. Combine them together
4 0
3 years ago
150 is 40% of what number
AysviL [449]

Step-by-step explanation:

hope it helps youu.........

5 0
3 years ago
1/2x + 4=9<br> What does x equal?
Ludmilka [50]

Answer:

x=10

Step-by-step explanation:

1/2x+4=9

subtract 4 from both sides

1/2x=5

multiply both sides by 2 to get x by itself

x=10

5 0
3 years ago
Read 2 more answers
ms Callahan is building a new dog pen for her dog. she has 24feet of fencing. the pen needs to be a rectangle. what is the lengt
NeX [460]
If Ms. Callahan has 24 feet of fencing, and she is building a pen, the PERIMETER of the pen must be 24 feet.  The perimeter is basically the distance around a figure.  The perimeter of a rectangle is equal to length plus width plus length plus width, AKA l+w+l+w, or P=2l+2w.  In a rectangle, two pairs of sides are of equal length--so the two lengths and the two widths must be equal.

So, the formula is P=2l+2w.  P, the perimeter, is 24, so 24=2l+2w.  Let's try some values for l and see what we get for w.  If the length is 1, l=1.  24=(2*1)+2w.  24=2+2w.  22=2w.  w=11.  So if length is 1 foot, width is 11 feet.

What if l=2?  24=(2*2)+2w.  24=4+2w.  2w=20.  w=10.  If l=2, w=10.  And l=3?  24=(2*3)+2w.  24=6+2w.  18=2w.  w=9.  If l=3, w=9.  Do you see a pattern?  Every time we add 1 to l, we subtract 1 from w.  So if l=4, w=8.  If l=5, w=7.  If l=6, w=6.  Here, we start getting similar answers: if l=7, w=5.  If l=8, w=4.  Since we already know these values work, it doesn't matter whether we call it length or width.  So, our answers are below.

Answer: Ms Callahan can make a pen with a length of 1 foot and a width of 11 feet, a length of 2 feet and a width of 10 feet, a length of 3 feet and a width of 9 feet, a length of 4 feet and a width of 8 feet, a length of 5 feet and a width of 7 feet, or a length of 6 feet and a width of 6 feet.
6 0
3 years ago
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