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Marina86 [1]
3 years ago
6

Rewrite 3^-4 without negative exponents a. 81 b. -81 c. 1/81 d. -1/81

Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0
<h3>Answer</h3>

1/81(C)

<h3>Step-by-step solution</h3>

(3)^4=81

if 3^-1=1/3

so, 3^-4=1/81(C)

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River C is 400 miles longer than River D. If the sum of their lengths is 5 comma 520 ​miles, what is the length of each​ river?
Viefleur [7K]
If the sum of their lengths is 5,520 miles then River D is 2360 and River C is 3160
4 0
3 years ago
Jaun's age, x, is 4 times his age 15 years ago
KIM [24]

The expression of the mathematical statement given as "Jaun's age, x, is 4 times his age 15 years ago" is x = 4 * (x - 15)

<h3>How to rewrite the statement as an expression?</h3>

The mathematical statement is given as

Jaun's age, x, is 4 times his age 15 years ago

From the statement, we have:

x represent Juan's current age

This means that his age 15 years ago is

15 years ago = x - 15

4 times his age 15 years ago is

4 * 15 years ago = 4 * (x - 15)

The above equation is equivalent to his current age

So, we have

x = 4 * (x - 15)

Hence, the expression of the mathematical statement given as "Jaun's age, x, is 4 times his age 15 years ago" is x = 4 * (x - 15)

Read more about expressions at

brainly.com/question/2972832

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7 0
1 year ago
There are 75 milligrams of cholesterol in a 3.5 ounce serving of lobster. How much cholesterol is in 6ounces of lobster
Maru [420]

Hence, the amount of cholesterol in 6 ounces of lobster will be 128.58 milligrams

Step-by-step explanation:

Given

Cholesterol in 3.5 ounces = 75 mg

Cholesterol in 6 ounces =x= ?

This can be worked out by using proportions

It can be written as:

\frac{75}{3.5}=\frac{x}{6}\\21.43=\frac{x}{6}\\Multiplying\ both\ sides\ by\ 6\\21.43*6=x\\x=128.58\ mg

Hence, the amount of cholesterol in 6 ounces of lobster will be 128.58 milligrams

Keywords: Proportions, Conversion

Learn more about proportions at:

  • brainly.com/question/4163549
  • brainly.com/question/4168505

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8 0
3 years ago
in 2002, a 30 second commercial during super bowl cost an average of 1,900,000. At this rate, how much would a 45 second commerc
kotegsom [21]
This is a unit multiplier of sorts

1,900,000 x 45/30

Simplify

1,900,000 x 3/2 

2,850,000
3 0
3 years ago
Read 2 more answers
Use right triangle DCB to find the trig values for angle D.
n200080 [17]
Sin D= opp./hyp. = 35/37
cos D= adj./hyp. = 12/37
tan D= opp./ adj. = 35/12
3 0
3 years ago
Read 2 more answers
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