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harkovskaia [24]
3 years ago
14

What is "k" ? 20k+4+33k-9

Mathematics
1 answer:
kifflom [539]3 years ago
7 0
I think it is -45
Hope this helps
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The expression (3x^7)^4 is equivalent to c^n what is the value of c
Nimfa-mama [501]

Answer:

n= 21

c= 3x

Step-by-step explanation:

The expression is given as;

(3x⁷)⁴

Apply the brackets law of indices which states that :

If a term with a power is itself raised to a power then the powers are multiplied together

(xᵃ)ᵇ = xᵃˣᵇ

Applying the same;

(3x⁷)⁴ = 3x²¹

If 3x²¹ = c^n

Then n = 21

and

c= 3x

7 0
3 years ago
Kara did a survey to determine to study the types of pets that students in her school had. She surveyed 300 students and found t
julsineya [31]

Answer:

(C)81

Step-by-step explanation:

Total Number of Students =300

Percentage who had cats, n(C) = 40%

Percentage who had both cats and dogs , n(C \cap D) = 12%

Percentage who had neither cats nor dogs, n(C \cup D)' =45%

Now:

Universal Set, U = n(C)+n(D)-n(C \cap D)+n(C \cup D)'

100 = 40 + n(D)-12+45\\n(D)=100-73\\$Percentage of those who own dogs =27\%

Therefore:

Number of Students who had dogs

=27% of 300

=81

3 0
3 years ago
Write an equation of a line that contains the point (-2,3) with a slope of 0.
Aleksandr [31]

Answer:

y =3

Step-by-step explanation:

Slope of zero means it is a horizontal line

Horizontal lines are of the form

y =

The y coordinate is 3 so

y =3

4 0
3 years ago
You buy a book for $12 and a CD for $6. You hand a sales cleck a $20. How much change should you get back?
GuDViN [60]

Answer:

20-12-6=2

Step-by-step explanation:

why is this in college math bruh

5 0
3 years ago
Read 2 more answers
A motorcycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was being driven at 45 mph and th
UNO [17]

Answer:26 mile

Step-by-step explanation:

5 0
3 years ago
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