7e−4=31 solve for e.

Answers

Answer 1
Answer: solve your equation step-by-step.

7x−4=31

Add 4 to both sides.

7x−4+4=31+4

7x=35

Divide both sides by 7.

7x/7 = 35/7

x=5

Answer 2
Answer: 7e-4=31 add 4 to both sides = 7e=35 then divide 7 on both sides then you get the answer of e=5

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Part A: Write an algebraic expression for 6 more than 7 times a numberPart B: Write a verbal expression for 3(n + 8).
This equation shows how the total number of necklaces Lisa owns is related to the amount of money she spends on additional necklaces.n = dThe variable d represents the amount of money she spends on additional necklaces, and the variable n represents the total number of necklaces she owns. How much money does Lisa need to spend on new necklaces in order to own a total of 16 necklaces?
Solve for x −4.5 (x−8.9) =12.6

What is the answer for : -2 ÷ 2491937 .

Answers

Well, once you divide those, your answer would end up to be -8.02588508e-7.
I hope I helped! =D

The Windows on the first floor of a building are 3 1/2 yards wide. The Windows on the second floor of the building are 1 7/9 yards wide. How much wider are the Windows on the first floor than the second floor

Answers

the answer, is 2 1/9. subtract  1 7/7 from 3 1/2, and you'll get 2 1/2

(hope this helps)

Lila collected the honey from 3 of her beehives.from the first hive she collected 2/3 gallon of honey.the last two hives yielded 1/4 gallon each.A.how many gallons of honey did lila collect in all?

Answers

Lila collected 7/6 gallons of honey, which is 1 1/6 gallons of honey.
Here is how to do it:
 to add fractions you need the denominators to be the same, so you multiply the values in the fractions to get a denominator of 6.--> 4/6+3/6. 
Then we add the numerators.--> 7/6. 
Then we simplify 7/6, which is 1 1/6.

5y +6z2 - y3 ; y=4 z=5(I can't input exponents; the 2 in 6z2 is an exponent, and the 3 in y3 is, too.)

Answers

5(4)+6(5)^2-(4)^3
20+150-64
170-64=106

What number is in the hundredths place in 3.86

Answers

The 6 is in th hundredths place
it goes like this

hundreds tens ones . tens hundredths thousandths

A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn.B)What is the probability of selecting two white marbles?

C) Is there a greater chance of selecting two white marbles in a row or two purple marbles in a row? Plz show your work THANKS!!

Answers

b.) there is a 22.2% chance you will pick two white marbles

c.) there is a better change of selecting two purple in a row because there is a 77.7% chance that you will pick purple