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blagie [28]
3 years ago
12

Marisa painted 1/2 of her bedroom in 3/4 of a hour at this rate how long will it take her to paint the entire room

Mathematics
1 answer:
sukhopar [10]3 years ago
6 0
6/4 hours add 3+3 getting 6 amd dont change the denominator
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Find the percent change from the first value to the second.<br><br> 50;36
SSSSS [86.1K]

Answer:

-28%

Step-by-step explanation:


6 0
2 years ago
50 POINTS! Show All Work!
olasank [31]

Let the number of chickens = c.

Let the number of pigs = p.

A chicken has 1 head and 2 legs.

c number of chickens have c heads and 2c legs.

A pig has 1 head and 4 legs.

p number of pigs have p heads and 4p legs.

There are 40 heads.

Equation for heads:

c + p = 40

There are 110 legs.

Equation for legs:

2c + 4p = 110

System of equations:

c + p = 40

2c + 4p = 110

Solve the first equation of the system of equations for c:

c = 40 - p

Substitute 40 - p for c in the second equation:

2c + 4p = 110

2(40 - p) + 4p = 110

80 - 2p + 4p = 110

80 + 2p = 110

2p = 30

p = 15

Now substitute p = 15 in the first equation to find c.

c + p = 40

c + 15 = 40

c = 25

There are 25 chickens and 15 pigs.

7 0
2 years ago
Read 2 more answers
The diameter of a circle pass through
Neko [114]
The diameter of a circle passes through the middle
8 0
3 years ago
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
vredina [299]

Answer:

2.35%

Step-by-step explanation:

Mean number of months (M) = 39 months

Standard deviation (S) = 10 months

According to the 68-95-99.7 rule, 95% of the data is comprised within two standard deviations of the mean (39-20 to 39+20 months), while 99.7% of the data is comprised within two standard deviations of the mean (39-30 to 39+30 months).

Therefore, the percentage of cars still in service from 59 to 69 months is:

P_{59\ to\ 69}=\frac{P_{9\ to\ 69}-P_{19\ to\ 59}}{2} \\P_{59\ to\ 69}=\frac{99.7-95}{2}\\P_{59\ to\ 69}=2.35\%

The approximate percentage of cars that remain in service between 59 and 69 months is 2.35%.

8 0
2 years ago
Robert spent half of his savings on a new phone. He earns some money back by babysitting the neighbors for $45. What was his sav
g100num [7]
The answer is 169 I’m pretty sure
8 0
2 years ago
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