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3 years ago

What are all the prime and composite factors of 45

Mathematics

1 answer:

Helen [10]3 years ago

3 0

I may not know many but here it goes...
1,3,5,9,45

Hope this helped you!

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Robert is writing a paper for language arts class he can write one third of the page in 1/4 of an hour at what rate is Robert wr

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He's writing one paper every 3/4 of an hour

1/3: 15 minutes
2/3: 30 min
3/3: 45 minutes

Or, one paper every 45 minutes/ 3/4 of an hour

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3 years ago

Betty bought two bags full of books at an annual library book sale. If she

almond37 [142]

Answer:

12.90= .90+ 2x

12=2x

6=x

Each bag of books cost was $6

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3 years ago

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The rectangles garden is 25ft by 15ft what is the area of the garden ?

steposvetlana [31]

I hope this helps you

Area=25x15

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3 years ago

At a cookout the cook prepares 25 hot dogs and 16 hamburgers. If the ratio is 25 to 16, the rate can be expressed as 25 hot dogs

victus00 [196]

25 hot dogs per 16 hamburgers.

7 0

3 years ago

Situation:

Gala2k [10]

Answer:

5.5 days (nearest tenth)

Step-by-step explanation:

Given formula:

$\sf N=N_0e^{-kt}$

$\sf N_0$ = initial mass (at time t=0)
N = mass (at time t)
k = a positive constant
t = time (in days)

Given values:

$\sf N_0$ = 11 g
k = 0.125

Half-life: The time required for a quantity to reduce to half of its initial value.

To find the time it takes (in days) for the substance to reduce to half of its initial value, substitute the given values into the formula and set N to half of the initial mass, then solve for t:

$\begin{aligned}\sf N & = \sf N_0e^{-kt}\\\\\implies \sf \dfrac{11}{2} & = \sf 11e^{-0.125t}\\\\\sf \dfrac{1}{2} & = \sf e^{-0.125t}\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf \ln e^{-0.125t\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf -0.125t \ln e\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf -0.125t(1)\\\sf t & = \sf \dfrac{\ln \left(\dfrac{1}{2}\right)}{-0.125}\\\\\sf t & = \sf 5.545177444...\\\\\sf t & = \sf 5.5\:\:days\:\:(nearest\:tenth)\end{aligned}$

Therefore, the substance's half-life is 5.5 days (nearest tenth).

Learn more about solving exponential equations here:

brainly.com/question/28016999

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2 years ago

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