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3 years ago

Select the true statement

Mathematics

2 answers:

KIM [24]3 years ago

6 0

Answer:

2.5 pounds of blueberries cost $11.25

Step-by-step explanation:

The answer cant be 2.25 pounds of blueberries cost $0.50 because x becomes before y and x is how many pounds of blueberries there are and y is the cost.

marta [7]3 years ago

3 0

2.5 pounds of blueberries costs $11.25 is true

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A leprechaun places a magic penny under a girls pillow. The next night there are 2 magic pennies under her pillow. The following

kiruha [24]

Answer:

After 47 days she will have more than 90 trillion pennies.

Step-by-step explanation:

At the beginning there was 1 penny. At the second day the amount of pennies under the pillow became 2.

The amount of pennies doubled each day. So the series is,

$1,2,4,8,16,32,.....$

This series is in geometric progression.

As the pennies from each of the previous days are not being stored away until more pennies magically appear so the sum of series will be,

$S_n=\dfrac{a(r^n-1)}{r-1}$

where,

a = initial term = 1,

r = common ratio = 2,

As we have find the number of days that would elapse before she has a total of more than 90 trillion, so

$\Rightarrow 90\times 10^{12}\le \dfrac{1(2^n-1)}{2-1}$

$\Rightarrow 90\times 10^{12}\le \dfrac{2^n-1}{1}$

$\Rightarrow 90\times 10^{12}\le 2^n-1$

$\Rightarrow 2^n\ge 90\times 10^{12}+1$

$\Rightarrow \log 2^n\ge \log (90\times 10^{12}+1)$

$\Rightarrow n\times \log 2\ge \log (90\times 10^{12}+1)$

$\Rightarrow n \ge \dfrac{\log (90\times 10^{12}+1)}{\log 2}$

$\Rightarrow n \ge 46.4$

$\Rightarrow n\approx 47$

8 0

3 years ago

| 17. You have saved $95 and can

jok3333 [9.3K]

Answer:

Step-by-step explanation:

400=15x+95

305=15x

20 1/3=x

7 0

3 years ago

Read 2 more answers

PLEASE HELP ME I AM FAILING. I WILL GIVE BRAINLIEST. PLEASE!!!!!! I NEED THE ANSWERS!!!

GenaCL600 [577]

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I think that’s it hope that helps

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2 years ago

Read 2 more answers

Owen received $100 for his birthday. He wants to spend 2/10 of his money on a video game. He wants to spend 55/100 of his money

Dafna11 [192]

Answer:

No, Owen wants to spend 105/100 of his money.

Step-by-step explanation:

HE wants to spend 2/10, 3/10, and 55/100 or 5.5/10, but if we add up all of the numbers we would get 10.5/10 meaning he would he 5 dollars short.

7 0

3 years ago

Help someone out pls!

likoan [24]

Answer: the answer is D

Step-by-step explanation:V = pi (d/2)^2 * h

V = pi (d^2 / 4) * h

h = 4V / ( pi * d^2) (meters)

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2 years ago