3 years ago

Select the correct product. (j + 7)(k - 5)

Mathematics

2 answers:

steposvetlana [31]3 years ago

8 0

Your answer is jk-5j-7k-35

Pavel [41]3 years ago

7 0

Answer:

jk - 5 j + 7 k - 35

Step-by-step explanation:

this is the answer

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What should be added to a²-2ab+b² to get a²-ab-2b²

dybincka [34]

SOLUTION:

what should be added to a²-2ab+b² to get a²-ab-2b²

let the added no is P

$\pmb{P+(a^2-2ab+b^2)=(a^2-ab-2b^2) }$

$\pmb{P=(a^2-ab-2b^2)-(a^2-2ab+b^2) }$

$\pmb{P=a^2-ab-2b^2-a^2+2ab-b^2 }$

$\pmb{P=ab-3b^2 }$

$\therefore{\pmb{ab-3b^2 }}$ should be added to a²-2ab+b² to get a²-ab-2b²

5 0

2 years ago

Inverse function of adding 12

muminat

Answer:

-12

Step-by-step explanation:

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3 years ago

Pamela is 12 years younger than Jiri. The sum of their ages is 80. What is Jiri's age? years old

vfiekz [6]

80/2= 40
46-34= 12
So Pamela is 34 & Jiri is 46

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3 years ago

I need this answer ?

FromTheMoon [43]

Are you sure you need help with that easy problem read it slowly then ask

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3 years ago

Given the function f(x) = 3x, find the value of f−1(81).

Shalnov [3]

Given the function f (x) = 3x, find the value of f-1 (81).
For this case, the first thing you should do is rewrite the function.
We have then:
y = 3 ^ x
From here, we clear the value of x:
log3 (y) = log3 (3 ^ x)
log3 (y) = x
Then, we rewrite the function again:
f (x) ^ - 1 = log3 (x)
Now, we evaluate the inverse function for x = 81:
f (81) ^ - 1 = log3 (81)
f (x) ^ - 1 = 4
Answer:
the value of f-1 (81) is:
f (x) ^ - 1 = 4

4 0

3 years ago