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3 years ago

7

Please help!!!!!!!!!!! ASAPPPPPPPPP

1 answer:

Zanzabum3 years ago

7 0

When you match the pattern of (x+y)⁴ to (a+b)ⁿ, you see that a=x, n=4. Then the first term aⁿ can be found by substituting these values for "a" and "n":

... x⁴

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Joey has $27. He wants to a cake for $25 before tax. Sales tax is 8%. Does Joey have enough to buy the cake? How much is the cak

viktelen [127]

Answer:

yes

Step-by-step explanation:

$25*8%

25*0.08=2

25+2=27

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3 years ago

Read 2 more answers

Find the surface area of a sphere with a volume of 36π in3.

swat32

First use known volume to solve for radius:
$V=\frac{4}{3}\pi r^{3}$
$r=\sqrt[3]{\frac{3V}{4\pi}}$
$r=\sqrt[3]{\frac{3(36\pi)}{4\pi}}$
$r=\sqrt[3]{27}$
$r=3$

Then use the radius to get the surface area:
$A_{surf}=4 \pi r^{2}$
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3 years ago

A bakery bakes 728 trays of cookies in a day. How many trays of cookies can the bakery make in 43 days?

musickatia [10]

Answer:

There will be 31,304 trays of cookies in 43 days.

Step-by-step explanation:

728 = 1 day

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3 years ago

Ms. Edwards is redecorating her office. She has a choice of 6 colors of paint, 3 kinds of curtains, and 4 colors of carpet. How

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4 years ago

Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv 1\pmod

goblinko [34]

$(2+3)^{-1}\equiv5^{-1}\pmod7$ is the number <em>L</em> such that

$5L\equiv1\pmod7$

Consider the first 7 multiples of 5:

5, 10, 15, 20, 25, 30, 35

Taken mod 7, these are equivalent to

5, 3, 1, 6, 4, 2, 0

This tells us that 3 is the inverse of 5 mod 7, so <em>L</em> = 3.

Similarly, compute the inverses modulo 7 of 2 and 3:

$2a\equiv1\pmod7\implies a\equiv4\pmod7$

since 2*4 = 8, whose residue is 1 mod 7;

$3b\equiv1\pmod7\implies b\equiv5\pmod7$

which we got for free by finding the inverse of 5 earlier. So

$2^{-1}+3^{-1}\equiv4+5\equiv9\equiv2\pmod7$

and so <em>R</em> = 2.

Then <em>L</em> - <em>R</em> = 1.

6 0

3 years ago