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2 years ago

Elena and Noah used different methods to compute 0.23 x 1.5. Both calculations were correct. Analyze the 2 methods.

Mathematics

1 answer:

mafiozo [28]2 years ago

5 0

Answer:

i have this same question. im sorry but i don't get it either. sorry..

Step-by-step explanation:

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What positive integer is closest to the value of √230 ?

xeze [42]

Answer:

Step-by-step explanation:

sqrt230=15.165...

9 0

3 years ago

Read 2 more answers

Add and Subtract Rational Expressions with a Common Denominator

Sladkaya [172]

Answer:

$\displaystyle \frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}=\frac{q^2+9}{q^2+6q+5}$

Step-by-step explanation:

<u>Simplifying Rational Expressions</u>

If two or more rational expressions have the same denominator, the add and subtract operations are done only with the numerator. The final denominator will be the common of both.

The expression is:

$\displaystyle \frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}$

Operating on the numerators:

$\displaystyle \frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}=\frac{4q^2-q+3-(3q^2-q-6)}{q^2+6q+5}$

Removing parentheses:

$\displaystyle \frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}=\frac{4q^2-q+3-3q^2+q+6}{q^2+6q+5}$

Simplifying:

$\boxed{\displaystyle \frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}=\frac{q^2+9}{q^2+6q+5}}$

The expression cannot be further simplified.

7 0

2 years ago

Water stations are placed every 600 meters of a fifteen kilometer race. How many water stations will be needed?

timurjin [86]

25 water stations, 15000/600 = 25

3 0

3 years ago

Read 2 more answers

Miguel and Maria are washing the windows in their home. Together, they can complete the task in 1 hours. If Maria can wash windo

Orlov [11]

For this case, the first thing we must do is define variables.
x: amount of time Miguel uses to complete the task.
y: amount of time Maria uses to complete the task.
We write the system of equations:
x + y = 60
y = (1/2) x
Solving the system we have:
x = 40 minutes
y = 20 minutes
Answer:
it take her to wash them by herself about:
y = 20 minutes

5 0

3 years ago

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12.09 rounded to the first decimal place

bulgar [2K]

12.0 is the answer I think

4 0

3 years ago