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kozerog [31]
3 years ago
14

What is 4k-14+3k=21​

Mathematics
2 answers:
BARSIC [14]3 years ago
5 0

So here. I don't know how to explain so-

djyliett [7]3 years ago
4 0

Answer:

Step-by-step explanation:

Add combine like terms which are 4k and 3k which =7k-14=21 then add 14 on both sides to its self and to the 21 which = 7k=35 then divide the 7 on both sides which then equals k=5

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HELP ME PLEASE!!! I NEED HELP PLEASE!!!
Vanyuwa [196]
All of them.
This is what they will turn out to be
A will end up being 2xy
B will end up being 9x^2
C will end up being 3y
D will end up being 9x^2y^4
8 0
2 years ago
PLEEASSEEEE Answer ASAP. Due in 5 Minutes. 25 points!!!!!!!!!
jonny [76]

Answer:

Here we will use the relationships:

a^n*a^m = a^{n + m}

(a^n)^m = a^{n*m}

\frac{a^n}{a^m} = a^{n - m}

And a number:

a^n

is between 0 and 1 if a is positive and larger than 1, and n is negative.

if a is positive and 0 < a < 1, then we need to have n positive such that:

0 < a^n < 1

A) 5^3*5^{-4} = 5^{3 + (-4)} = 5^{-1}

This is between zero and 1,

B) \frac{3^5}{3^{-6}} = 3^{5 - (-6)} = 3^{11}

This is greater than 1, because the exponent is positive.

C) (\frac{1}{4})^3*( \frac{1}{4})^2 = (\frac{1}{4})^{2 + 3} = (\frac{1}{4})^5

Because a is smaller than 1, and the exponent is positive, then the expression is between 0 and 1.

D) \frac{(-7)^5}{(-7)^7} = (-7)^{5 - 7} = -7^{-2}

The exponent is negative (and pair) then the expression is between 0 and 1.

Remember that when the exponent is pair, we always have that:

(-N)^m = (N)^m

So (-7)^-2 = 7^-2

4 0
3 years ago
I never really understood what this was could u help
ycow [4]

Answer:

1. f(4) or f(n)= 28

2. f(-2) or f(n)= -2

(please consider marking brainliest <3 )

Step-by-step explanation:

n=4                           n=-2

f(n)= 5(n)+8              f(n)= 5(n)+8

f(n)= 5(4)+8              f(n)= 5(-2)+8

(n)= 20+8                 f(n)= -10+8

f(n)=28                      f(n)=-2

5 0
3 years ago
Read 2 more answers
I need help!!!!!!!!!!!!!
never [62]

Answer:

The perimeter is 38 but it gets rounded to 40

Step-by-step explanation:

7 0
2 years ago
6 qts equals ? pints 8 qts equals ? gallons and 48 fl oz equals ? cups
nikdorinn [45]
6 quarts equals 12 pints
8 quarts equals 2 gallons
48 fl oz equals 6 cups
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3 years ago
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