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3 years ago

Write the espression 40w - 16, as a product with a whole number greater then one.

Mathematics

1 answer:

Blizzard [7]3 years ago

3 0

$40w-16=8(5w-2)$

P.S. Hello from Russia

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If y = 9 inches, z = 14 inches, h = 5 inches, and w = 4 inches, what is the area of the object?

vekshin1

Answer:

126

Step-by-step explanation:

7 0

2 years ago

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

A bag contains 12 pieces of candy. In how many weighs can 4 pieces be selected

igomit [66]

Answer:

495

Step-by-step explanation:

From 12, choose 4:

₁₂C₄ = 12! / (4! (12−4)!)

₁₂C₄ = 12! / (4! 8!)

₁₂C₄ = 495

3 0

3 years ago

Solve for r please 80=10r.

OLEGan [10]

R = 8 since 8 times 10 = 80

4 0

3 years ago

Read 2 more answers

111111111111111111111111111111111111111111111111111

Illusion [34]

Answer:

x = 4

Step-by-step explanation:

Step 1: Subtract 4 from both sides.

5x+4−4=24−4

5x=20

Step 2: Divide both sides by 5.

x=4

you welcome love

6 0

3 years ago

Read 2 more answers