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Aleonysh [2.5K]
3 years ago
10

Rolf spent 15 hours last week practicing his saxophone. If 3/10 of the time was spent practicing warm-up routines, how much time

did he spend practicing warm-up routines?
Mathematics
1 answer:
rusak2 [61]3 years ago
5 0

Answer:

(3/10)*15= 9/2= 4.5 hours practicing warm up routines

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mary went to her local Zoo where 55% of it's exhibit feature reptiles if the zoo features 20 exhibits in total how many of the z
IceJOKER [234]
Hello!

To find this you have to find what 55% of 20 is

You can do this by doing 20 * 0.55

0.55 is 55% as a decimal

This gives us the answer of 11

Hope this helps!
8 0
3 years ago
Read 2 more answers
What is the factor tree of 99 and 165 and what is the GCF?
Shtirlitz [24]
99
/ \
11 9
/ \
3 3

165
/ \
33 5
/ \
3 11

GCF=3
5 0
3 years ago
Anybody know the answer to this
Phoenix [80]

Answer:

x = 2

Step-by-step explanation:

The blue line represent the full line length.

We can add the parted black segments together and set it equal to the line.

11 + 6x - 2 = 6x + 9

10x + 1 = 6x + 9

10x = 6x + 8

4x = 8

x = 2

4 0
2 years ago
Solve x≤0 and x≥−4 and write the solution in interval notation. If there is no solution, type ∅.
xxTIMURxx [149]

The answer is (-∞.∞).

Draw out a number line. Plot 0 and -4 on the number line.

Shade to the left of x = 0, and have a filled in circle at the endpoint. This is the graph of x≤0

Then graph x ≥−4 by plotting a filled in circle at -4, and shading to the right.

Note how the two graphs overlap to cover the entire real number line

So if we have x≤0  or  x≥−4 then we're basically saying x is any real number. To write this in interval notation, we write (−∞,∞)

This is the interval from negative infinity to positive infinity (or just infinity). We exclude each endpoint because we can't actually reach infinity itself. Infinity is not a number. Infinity is a concept

Side note: if you change the "or" to "and", then the solution to x≤0  and  x≥−4 would be [-4, 0][−4,0] to indicate the interval from x = -4 to x = 0, including both endpoints. This is the region where the two graphs overlap.

To know more about graphs

visit-:brainly.com/question/10712002

SPJ9

5 0
2 years ago
NEED ANSWER ASAP:
andriy [413]

Answer:

14/27 feet

Step-by-step explanation:

2 1/3 feet : 4 1/2 feet

= 7/3 : 9/2

= 7/3 ÷ 9/2

= 7/3 × 2/9

= (7*2)/(3*9)

= 14/27 feet

2 1/3 feet : 4 1/2 feet = 14/27 feet

8 0
3 years ago
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