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3 years ago

Richard practiced piano each of 3 piano solos for 5/12 hour. How long did he practice in all? Please show how to figure

1 answer:

6 0

3 piano solos....each is 5/12 hr....
u can either add : 5/12 + 5/12 + 5/12 = 15/12 = 1 1/4 hrs

or u could multiply : 3 * 5/12 = 15/12 = 1 1/4 hs

either way....same answer

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Henrietta did an experiment. She started out with 700 bacteria cells. She found that the growth rate of the bacteria cells was 5

poizon [28]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have a exponential function of the form

$y=a(b^x)$

where

y ---> is the population of bacteria

x ---> the number of hours

a is the initial value or y-intercept

b is the base of the exponential function

r is the rate of change

b=(1+r)

we have

$a=700\ bacteria$

$r=5\%=5/100=0.05$

$b=1+0.05=1.05$

substitute

$y=700(1.05^x)$

For x=20 hours

substitute in the equation and solve for y

$y=700(1.05)^{20} =1,857\ bacteria$

4 0

4 years ago

Kalida runs 3 laps in 9 minuets and sonya runs 2 laps in 7 minuets who can run faster?

Vika [28.1K]

Answer:

Kalida

Step-by-step explanation:

Kalida : 9 minutes / 3 laps = 3 minutes/ lap

Sonya : 7 minutes / 2 laps = 3.5 minutes/ lap

8 0

3 years ago

Read 2 more answers

Which graph best describes this?

NemiM [27]

A, Is the answer according to my calculations.

8 0

4 years ago

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Why is the fraction 6/10 not written 0.06?

Kaylis [27]

Because 10 divided by 6 equals 6 tenths not 6 hundredths

3 0

3 years ago

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Evaluate 6x + 11 when x = 7

nlexa [21]

Answer:

Step-by-step explanation:

To evaluate 6x + 11, we must substitute the value of x.

Since we know that x = 7, it is easier to evaluate the expression;

6x + 11

6(7) + 11

Since 6 is outside the parenthesis, we must multiply everything inside the parenthesis by 6;

6(7) + 11

42 + 11

When you add the two numbers you get:

4 0

4 years ago