3 years ago

-p - 8p - 10 - 8p simply

Mathematics

1 answer:

Naya [18.7K]3 years ago

4 0

Answer:

Step-by-step explanation:783

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Which of these is a simplified form of the expression –b – 2(2b + 5)?

monitta

Answer:

Step-by-step explanation:

-b -4b - 10

-5b - 10

hence c is the answer

3 0

2 years ago

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Given $a \equiv 1 \pmod{7}$, $b \equiv 2 \pmod{7}$, and $c \equiv 6 \pmod{7}$, what is the remainder when $a^{81} b^{91} c^{27}$

Blizzard [7]

$\begin{cases}a\equiv1\pmod7\\b\equiv2\pmod7\\c\equiv6\pmod7\end{cases}$

$a^{81}\equiv1^{81}\equiv1\pmod7$

$b^{91}\equiv2^{91}\pmod7$

$2^{91}\equiv(2^3)^{30}\times2^1\equiv8^{30}\times2\pmod7$
$8\equiv1\pmod7$
$2\equiv2\pmod7$
$\implies2^{91}\equiv1^{30}\times2\equiv2\pmod7$

$c^{27}\equiv6^{27}\pmod7$

$6^{27}\equiv(-1)^{27}\equiv-1\equiv6\pmod7$

$\implies a^{81}b^{91}c^{27}\equiv1\times2\times6\equiv12\equiv5\pmod7$

6 0

3 years ago

Malik deposited 1050 in a savings account and it earned 241.50 in simple interest after four years. Find the interest after four

kap26 [50]

Answer:

if it's true simple interest then each year's interest is the same so interest for one year is a quarter of 241.50 which give you the rate but if each year's interest in left in the account the result will be different , it is a really poorly worded question

7 0

3 years ago

HELPP MEE PLEASEEEEEE

Rudiy27

Answer:

wouldn't it be 5m....??

7 0

3 years ago

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HELPP PLEASEEEEEEEEEEEEEEEEEEEEEE<br><br> The sum of 6 and 12 divided by 9.

allsm [11]

6 + 12 = 18
18/9 = 2

The answer is 2

Hope this helps