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3 years ago

What is equivalent to 7/8+9/15

Mathematics

1 answer:

Xelga [282]3 years ago

6 0

Answer:

Depends where the parenthesis are. But if you solve it using PEMDANS it's 1.475.

Step-by-step explanation:

When solving something like this, you use PEMDAS, sometimes known as GEMDAS and solve it in this order.

P/G=Parenthesis

E= Exponents

M= Multiplication

D= Division

A= Addition

S= Subtraction.

So skip P, E, M, and S because there are no parenthesis, exponents, multiplication, or subtraction signs.

So 7/8=0.875. 9/15=0.6, and if you add those you get 1.475

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Your last five customer interactions lasted 2, 3, 6, 8, and 4 minutes.

Usimov [2.4K]

Answer:

p=11

Step-by-step explanation:

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3 years ago

If 3,000 bacteria, with a growth constant (k) of 2.8 per hour, are present at the beginning of an experiment, in how many hours

Ivenika [448]

Given:

Initial number of bacteria = 3000

With a growth constant (k) of 2.8 per hour.

To find:

The number of hours it will take to be 15,000 bacteria.

Solution:

Let P(t) be the number of bacteria after t number of hours.

The exponential growth model (continuously) is:

$P(t)=P_0e^{kt}$

Where, $P_0$ is the initial value, k is the growth constant and t is the number of years.

Putting $P(t)=15000,P_0=3000, k=2.8$ in the above formula, we get

$15000=3000e^{2.8t}$

$\dfrac{15000}{3000}=e^{2.8t}$

$5=e^{2.8t}$

Taking ln on both sides, we get

$\ln 5=\ln e^{2.8t}$

$1.609438=2.8t$ $[\because \ln e^x=x]$

$\dfrac{1.609438}{2.8}=t$

$0.574799=t$

$t\approx 0.575$

Therefore, the number of bacteria will be 15,000 after 0.575 hours.

4 0

3 years ago

If ABCD is dilated by a factor of 2, the

IrinaVladis [17]

Answer:

I believe its (- 2, 2 )

Step-by-step explanation:

Assuming the dilatation is centred at the origin, then multiply the coordinates of B by the scale factor 2, that is

B(- 1, 1 ) → B'(2(- 1), 2(1) ) → B'(- 2, 2 )

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3 years ago

If you work for 16 hours and it says $8.68/hr how much you make

weeeeeb [17]

8.68x when x=the amount of hours you have worked

So do 8.68*16

Which equals $138.88

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4 years ago

$3.00. Boxes of SHABLAM! cereal originally cost The store has reduced the price by 25%. You have a coupon for an additional 20%

Alex777 [14]

The answer is 1.80 because

0.25 times 3.00 is 0.75
minus 0.75 to 3.00 and it will be 2.25
0.20 times 2.25 will be 0.45
minus 0.45 to 2.25
and u will get 1.80

6 0

3 years ago

Read 2 more answers