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Troyanec [42]
3 years ago
5

Peter practices violin for a total of 55 minutes over the weekend he practices for 25 minutes on Saturday how many minutes does

he practice on Sunday
Mathematics
2 answers:
xxTIMURxx [149]3 years ago
4 0
It’s simple all you do is subtract 55-25=30 you’re welcome have a good night
Bess [88]3 years ago
3 0

Answer:

30 minutes.

Step-by-step explanation:

55 - 25 = 30

Hope this helped, have a great day/night!

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A chord in a circle is 18 cm long and is 5 cm from the center of the circle. How long is the radius of the circle
Veseljchak [2.6K]

2, just use pemdas.

5 0
3 years ago
Explain how you know...?
Anestetic [448]

Answer:

60

Step-by-step explanation:

Because 7.7^2 equals 60,

8 0
3 years ago
Given the functions below, find (f - g) (2).<br> f(x)<br> x2 + 3<br> g(x) = 4x – 3<br> =
kakasveta [241]

Answer:

(f - g)(2) = 2

Step-by-step explanation:

Given the functions below, find (f - g) (2).

f(x) = x² + 3

g(x) = 4x – 3

(f - g)(x) = (x²+3)-(4x-3)

(f - g)(x) = x²+3-4x+3

(f - g)(x) = x²-4x+6

(f - g)(2) = (2)²-4(2)+6

(f - g)(2) = 4-8+6

(f - g)(2) = 2

5 0
3 years ago
The doubling period of a bacterial population is 20 20 minutes. At time t = 100 t=100 minutes, the bacterial population was 9000
Nuetrik [128]

Answer:

The initial population was 2810

The bacterial population after 5 hours will be 92335548

Step-by-step explanation:

The bacterial population growth formula is:

P = P_0 \times e^{rt}

where P is the population after time t, P_0 is the starting population, i.e. when t = 0, r is the rate of growth in % and t is time in hours

Data: The doubling period of a bacterial population is 20 minutes (1/3 hour). Replacing this information in the formula we get:

2 P_0 = P_0 \times e^{r 1/3}

2 = e^{r \; 1/3}

ln 2 = r \; 1/3

ln 2 \times 3 = r

2.08 \% = r

Data: At time t = 100 minutes (5/3 hours), the bacterial population was 90000. Replacing this information in the formula we get:

90000 = P_0 \times e^{2.08 \; 5/3}

\frac{9000}{e^{2.08 \; 5/3}} = P_0

2810 = P_0

Data: the initial population got above and t = 5 hours. Replacing this information in the formula we get:

P = 2810 \times e^{2.08 \; 5}

P = 92335548

3 0
3 years ago
joan weighs 3 kg more than her sister amy and their total weight is 92 kg what is the weight of each girl.Answer Asap plsss I ne
Ahat [919]
Joan- 47.5kg sister-44.5kg
5 0
3 years ago
Read 2 more answers
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