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Nata [24]
4 years ago
14

Lucia tried to solve the system below. What error did she make?

Mathematics
2 answers:
OlgaM077 [116]4 years ago
8 0
The original system is much more of a candidate for linear combination rather than the substitution method which was what was attempted.. Having said that, the mistake I see appears in the very first step of the process when Lucy tries to solve the equation x - 2y = -2 for 'x' in terms of 'y'. Here result should have been x = 2y - 2 or x = -2 + 2y
AysviL [449]4 years ago
3 0
Lucia made a mistake when she rewrote the formula
x - 2y = - 2

To rewrite the formula to x is a function of y. we have to add 2y to both sides of the formula. Instead of adding 2y, Lucia subtracted 2y from the right side.

Instead of what she did, x should be written the following way
x = 2y - 2
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Alexia's bathroom has a tub in the shape of a rectangular prism with a length of 1.5 meters, a width of 0.5 meter, and a height
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5 0
4 years ago
HELP PLEASE WRITE AWAY
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6 0
3 years ago
the area of a rectangle garden is 38 1/4 square meters.The width of the garden is 4 1/2 meters.Find the length of the garden.
never [62]
Area = 38 1/4 = 153/4

Width = 4 1/2 = 9/2

Area = Length x Width

Length = Area/Width

So divide both of them:
\sf{ \frac{153}{4} \div \frac{9}{2} =\sf{ \frac{153}{4} \times \frac{2}{9} = \frac{9 \times 17}{2\times 2}\times \frac{2}{9} = \frac{17}{2}

So the length is equal to \boxed{\sf{\frac{17}{2}}}

4 0
3 years ago
How could I write the fractions 8/100 3/5 and 7/10 from least to greatest?
iVinArrow [24]
Get them to have a common denominator. 100 is the common denominator, so change 7/10 and 3/5 to have a denominator of 100. 7/10=70/100 and 3/5=60/100. So from least to greatest it will go 8/100, 3/5, 7/10.
5 0
4 years ago
Read 2 more answers
2,826 rounded to the nearest tenth
jasenka [17]

Answer:

2,826

Step-by-step explanation:

A tenth is the first place value after the decimal point

In this case, 2,826.<u>0</u>0

To round a number to the tenths place, we look at the hundredths place

If the number is 5 or more, we add 1 to the tenths place, and leave the numbers to the right 0's

If the number is 4 or less, we keep the number as it is in the tenths place, and leave the numbers to the right 0's

In this case, the hundredths place is a 0, which is less than 4, so we keep the 0 in the tenths place, and leave the to the right 0's.

Thus, our final answer is 2,826.

8 0
2 years ago
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