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seraphim [82]
3 years ago
9

Allegra practices piano each day after school. Last week she practiced 3 3/10 hours. This week she practiced only 2 1/6 hours. H

ow much longer did she practice last week than this week?
Mathematics
1 answer:
hodyreva [135]3 years ago
4 0
Subtract both fractions. Convert both fractions into improper fractions. So do 3x10+9 and see what ur answer is and put it over ten. Then do 2x16+1 and put the answer u get over 6. Then find the common denominator which is 30. Then subract both fractions and u should get ur answer
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How to solve y = 8x - 9
Alex Ar [27]

Answer:

-72

Step-by-step explanation:

The answer is -72 because 8 * -9 = -72, I can't explain it to you any other way ;-;

6 0
3 years ago
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a line is perpendicular to y - 5 = -1/4(x + 8) and goes through the point (-1,2). What is the lines y-intercept?
lisabon 2012 [21]

Answer:

y = 4x + 6

Step-by-step explanation:

Turn the equation we are given into slope-intercept form.

y - 5 = -1/4(x + 8)

y - 5 = -1/4x - 2

y = -1/4x + 3

The slope of a perpendicular line is the opposite reciprocal of the original line.

-1/4 -> 4/1 -> 4

Find the new y-intercept using the point given.

y = 4x + b

2 = 4(-1) + b

2 = -4 + b

6 = b

Fill in everything we solved for.

y = 4x + 6

Best of Luck!

8 0
3 years ago
111 is 25\%25%25, percent of what number?
vodka [1.7K]

Answer:

444

Step-by-step explanation:

111x4=444

25 percent is equal to 1/4

8 0
3 years ago
ANSWER ASAP PLS 20 POINTS! Which graph represents the piecewise defined function? y= {3 if x<-2 0 if x=1 -1 if x>1
Otrada [13]

Answer:

It is the third option. (the one which has a black point at X=1, Y=1)

Step-by-step explanation:

For simplicity what you should do is, you should satisfy the second condition that is, y=0 if x=1.

Here only the third option is satisfying this condition.

Whenever there is is a white circle or a white point it means that the point does not satisfy the condition and the the function is not defined at that point. And the black point means that the circle is defined at that point and satisfies the condition.

Henceforth, the correct answer is the third option.

4 0
3 years ago
Solve the following quadratic equation by factoring.
tekilochka [14]

Answer:

x = 7, -2

Step-by-step explanation:

<h2><em><u>Factor and set each factor equal to 0</u></em></h2>
6 0
3 years ago
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