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4 years ago

What are the steps for solving 12r+5+3r-5 ?

Mathematics

2 answers:

mr Goodwill [35]4 years ago

5 0

Add like terms and that should be the simplified versions for the answer:
15r.

victus00 [196]4 years ago

4 0

Add the common terms as over here it is 12r+3r =15r and +5 and -5 cancels out

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23. A population of mice grows according to the formula A(t) = 300e0.087t where

dem82 [27]

Option B

The amount of mice when t = 0 is 300

<h3><u>Solution:</u></h3>

Given that population of mice grows according to the formula:

$A(t) = 300e^{0.087t}$

where t is measured in months

<em><u>To find: amount of mice when t = 0</u></em>

So we have to substitute t = 0 in given formula and find value of A(t)

$A(t) = 300e^{0.087t}$

Substitute t = 0

$A(t) = 300e^{0.087 \times 0}\\\\A(t) = 300e^{0}$

$\text{ We know that } e^0 = 1$

So we get,

$A(t) = 300 \times 1 = 300$

Thus the amount of mice when t = 0 is 300

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4 years ago

Cans of frozen orange juice are weighed to ensure they are not underfilled. Cans are independent, and the probability that a can

olga2289 [7]

Answer: 0.999986176

Step-by-step explanation:

To solve this, the probability distribution formula for selection will be used

Where P(x=r) = nCr * p^r * q^n-r

To get the probability that all 3cans are not overfilled, since the probability of success given in the question is that of a can being overfilled, then we will first derive the probability of having exactly 3cans being overfilled and subtract this gotten answer from 1

n= 3, r=3, p=0.024, q=1-0.024=0.976

When, 3 cans are overfilled, P(x=3) becomes:

P(x=3) = 3C3 * 0.024^3 * 0.976^0

P(x=3) = 1 * 0.000013824 * 1

P(x=3) = 0.000013824.

Then, probability that all three cans are not overfilled becomes :

1 - 0.000013824. = 0.999986176,

7 0

3 years ago

A cellular phone company charges a $49.99 monthly fee for 600 free minutes . Each additional minute costs $.35. This mouth you u

zmey [24]

$102.49 or if you round $49.99 to $50.00 your answer would be $102.50

4 0

3 years ago

Please help me ASAP please

Maksim231197 [3]

Answer:

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3 years ago

A box of 15 cookies costs $9.<br> MY<br> What is the cost for 1 cookie?

Nitella [24]

Answer: $0.6

Step-by-step explanation:

15cookies= $9

1 cookie = x

Cross multiply

15x= 9

Divide both sides by 15

x= 9/15= 3/5= $0.6

4 0

3 years ago

Read 2 more answers