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Otrada [13]
3 years ago
7

Estimate the difference using front-end estimation. 987.12 - 342.5

Mathematics
1 answer:
lukranit [14]3 years ago
7 0
987-343= 644

Not rounded is 644.62
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Dennis walks from (–5, –2) to (–5, 5) on the map. Which expression represents the distance that he walked? |-2| + |5| |-5 + 5| |
maks197457 [2]

Answer:

|-2| + |5|

Step-by-step explanation:

Dennis walks from (–5, –2) to (–5, 5) on the map.

Point on the format (x,y). On the x-coordinate, he stayed at the same position, x = -5, so it does not enter the distance calculation.

On the y-coordinate, he went from -2 to 5, so the distance is of:

d = 5 - (-2) = 5 + 2 = |5| + |2| = |5| + |-2| = 7

So the correct option is |-2| + |5|

7 0
3 years ago
What number is 32% of 75?
const2013 [10]

Answer:

What is 32 percent of 75? = 24.

Step-by-step explanation:

5 0
3 years ago
The perimeter of a rectangular swimming pool is 446 centimeters. The width of the pool is 7 centimeters less than the length of
Akimi4 [234]

Answer:

length = 115 cm

width = 108 cm

Step-by-step explanation:

The perimeter of a rectangular swimming pool is 446 centimeters

LEt L be the length of the pool

The width of the pool is 7 centimeters less than the length of the pool.

width = length - 7

W= L-7

Given perimeter = 446

Perimeter of rectangle = 2(length)+2(width)

446 = 2(L) + 2(W)                    we know W = L-7

446 = 2(L) + 2(L-7)    

446 = 2L + 2L - 14

Add 14 on both sides

460 = 4L

divide by 4 on both sides

L= 115

Length L= 115

Width W = L - 7 = 115 - 7= 108



5 0
3 years ago
Evaluate the expression when x = 4.
gulaghasi [49]
We have 3*4+2, or 14, by substituting in for x.
4 0
3 years ago
Find the value of :x^2+2xy+y^2-3x-3y-1<br> have: x^2-y=y^2-x (x<img src="https://tex.z-dn.net/?f=%5Cneq" id="TexFormula1" title=
lidiya [134]

Answer: The answer is x^2+2xy+2y^2–3x–3y–1

Step-by-step explanation: Move 2 to the left of y^2.

7 0
2 years ago
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