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Zanzabum
3 years ago
9

-Ready

Mathematics
1 answer:
AleksandrR [38]3 years ago
5 0

Answer:

80%

Step-by-step explanation:

Please consider the complete question:

Micah is preparing for a piano recital. He practices for 50 minutes on Monday and  90 minutes on Wednesday. By how much did she increase the time she practiced each day?

We will use percent change formula to solve our given problem.

\text{Percent change}=\frac{\text{Final value}-\text{Initial value}}{\text{Initial value}}\times 100\%

Upon substituting our given values, we will get:

\text{Percent change}=\frac{90-50}{50}\times 100\%

\text{Percent change}=\frac{40}{1}\times 2\%

\text{Percent change}=80\%

Therefore, Micah had increased the time by 80%.

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A train left isiolo on Friday at 11:45 pm.it took 8 hrs 55 mins to reach Nairobi. When did the train reach Nairobi? A . Saturday
valentina_108 [34]

Answer:

D.Saturday 8:40am

Step-by-step explanation:

11+8=19 (7)

45+55=100

one hour(100) makes 60 minutes

100-60=40

Therefore the answer is Saturday 8:40am

7 0
3 years ago
Determine between which consecutive integers the real zeros of y(x) = x2 - 4x – 2 are located.
Sholpan [36]

Answer:

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

Step-by-step explanation:

We have the function:

y(x) = x2 - 4x-2

As this is a quadratic function, we can calculate the zeros of the function with the quadratic equation:

x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4\cdot 1\cdot(-2)}}{2\cdot 1}\\\\\\x=\dfrac{4\pm\sqrt{16+8}}{2}\\\\\\x=\dfrac{4\pm\sqrt{24}}{2}\\\\\\x=\dfrac{4\pm4.9}{2}=2\pm2.45\\\\\\x_1=2+2.45=4.45\\\\x_2=2-2.45=-0.45

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

7 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST!!
Luda [366]

Answer:

Step-by-step explanation:

The union of two sets is a new set that contains all of the elements that are in at least one of the two sets. The union is written as A∪B or “A or B”. The intersection of two sets is a new set that contains all of the elements that are in both sets. The intersection is written as A∩B or “A and B”.

Hope this helps ^^

3 0
3 years ago
Read 2 more answers
A local coffee shop serves 2/9 as many customers as a shop run by a national coffee chain. The shop run by the chain serves 502
aleksklad [387]

Answer:

116

Step-by-step explanation:

502/9*2

About 57.8*2

115.6

Round up to 116

The local shop serves about 116 customers a day.

8 0
3 years ago
I WILL GIVE BRAINLIST, DUE IN 15 MIN
Burka [1]

Answer:

$34.50

Step-by-step explanation:

At 3.45 for 3/4 pounds that = to 4.60 for 1 pound.

4.60 *7.5 pounds= $34.50

7 0
3 years ago
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