4 less than a number is it the same as a number decreased by 4?

Mathematics

1 answer:

beks73 [17]3 years ago

3 0

Yes it is the same thing ! :)

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In an old story, a man puts 2 grains of rice on the first space of a chess board. He puts 4 grains on the second space, 8 grains

denis23 [38]

We know that
a1----------> grains of rice in the first square
a1=2
n------------> space ubication
the expressions is
an=a1^n----------> an=2^n

for the the tenth space n=10
an=2^10---------> an=1024 grains of rice

the answer is
1024 grains of rice

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Steven, a tailor, got an order to make a blazer. The customer specifically asked him to save 5⁄6 of a foot of the given cloth to

xz_007 [3.2K]

To answer this question, we just need to subtract the saved cloth from the requested cloth:

$\frac{5}{6} - \frac{5}{12}$

Since the fractions don't have the same denominator, we have to find the least common denominator. Luckily, since 6 goes into 12 twice, we can convert $\frac{5}{6}$ into $\frac{10}{12}$ :

$\frac{5}{6}( \frac{2}{2}) - \frac{5}{12} = \frac{10}{12} - \frac{5}{12}$

Now that the fractions have a common denominator, we can subtract them:

$\frac{10}{12} - \frac{5}{12} = \frac{5}{12}$

The difference between the requested cloth and the saved cloth is 5/12 of a foot, or 0.4166'.

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3 years ago

What is the square of 0.81?

uysha [10]

Answer:

0.6561

Step-by-step explanation:

i think i could be wrong if am right brainliest

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natulia [17]

You can use the sum of angles identities, then rearrange to put the result in the form of tangents.

$\displaystyle\frac{\sin{(x+y)}}{\sin{(x-y)}}=\frac{\sin{(x)}\cos{(y)}+\cos{(x)}\sin{(y)}}{\sin{(x)}\cos{(y)}-\cos{(x)}\sin{(y)}}\\\\=\frac{\left(\frac{\sin{(x)}\cos{(y)}+\cos{(x)}\sin{(y)}}{\cos{(x)}\cos{(y)}}\right)}{\left(\frac{\sin{(x)}\cos{(y)}-\cos{(x)}\sin{(y)}}{\cos{(x)}\cos{(y)}}\right)}\\\\=\frac{\tan{(x)}+\tan{(y)}}{\tan{(x)}-\tan{(y)}}$

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3 years ago

Please help. I’ll mark you as brainliest if correct

Alona [7]

Answer:

32 20 17 -57 13

-24 15 -31 31 -28

27 10 -7 18 22

Step-by-step explanation:

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3 years ago