1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NikAS [45]
3 years ago
10

Explain why the square root of -4 is not a real number, but cube root of -8 is

Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0
Because -2 times -2 is 4 and 2 x 2 is 4 as well. So you cant have -4. 
But if you have cube root of -8, you can do -2 as -2 x -2 gives you 4, if you x this by -2 you get -8
You might be interested in
The grade of a road is the ratio of its rise to its run and is usually given as a decimal or percent. Find the angle that this r
Andru [333]

Answer:

the angle would be 1/2 i did this problem before and got it correct

Step-by-step explanation:

3 0
3 years ago
Jack is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing
Sveta_85 [38]

Answer:

$57

9w+6d

Step-by-step explanation:

Given that:

Earnings per hour for washing cars = $9

Earnings per hour for walking dogs = $6

Number of hours for which car washing is done = w

Number of hours taken for walking dogs = d

Earnings for w hours for washing cars = Per hour earnings multiplied by number of hours = $9w

Earnings for d hours for walking dogs = Per hour earnings multiplied by number of hours = $6d

Total earnings by both = $(9w+6d)

Now, given that

Number of hours spent washing cars = 5 hours

Number of hours spent walking dogs = 2 hours

Therefore, total earnings by both = 9 \times 5 + 6 \times 2 = <em>$57</em>

5 0
3 years ago
Keri is making a doll clothes for a holiday craft show. The wholesale cost of the materials for one outfit is $9.38. If she sell
irinina [24]

Answer:

60%

Step-by-step explanation:

If I get you right, you're asking for the percentage gain to the nearest percentage, right?

Now to do this, we need to get the amount of profit she made. That's quite easy, we only need to subtract the cost price from the selling price. And that equals $15 - $9.38 that equals $5.62.

Now, we divide this value by the cost price and multiply by 100% to get the percentage gain.

I.e 5.62/9.38 × 100%.

That gives 59.9% , which equals 60% when approximated to the nearest percentage.

5 0
3 years ago
Select all of the situations below that can be modeled by the expression 4 + 3x.
Hatshy [7]

Answer:

1 2 3

Step-by-step explanation:

3 0
3 years ago
Location Selection Math Quiz
Eddi Din [679]
Take 4,000 times 12 to get 48,000. that’s how much A costs.

B is a little harder. you have to take (2,300+300)x12+(4*250). this equals $32,100

the correct answer would be B.
8 0
3 years ago
Other questions:
  • Simplify 7t · s · 3rt
    11·2 answers
  • El señor Sandro tiene paquetes con varias bolsas de 35 lunetas cada uno Mientras que el señor Lauro tiene paquetes con bolsas de
    14·1 answer
  • Can i please get help with this question?
    5·1 answer
  • Liability insurance covers any damage you might do to the apartment building. Contents insurance covers all your belongings. You
    10·1 answer
  • Can someone give me a step by step answer on how they figured this out so I understand it PLEASE???
    7·1 answer
  • Does someone know the answer to 6(x-5) &gt; 3(x-1) ??
    13·1 answer
  • The height of a statue is 276 inches. What is the hieght of the statue in meters? Round your answer to the nearest hundredth.
    9·2 answers
  • Find the slope of thelline that goes through the two points: 1)<br> (1 Point)<br> (2,5) and (-2,3)
    9·1 answer
  • The diagram shown can be used to prove the Pythagorean theorem. Which statement is TRUE about the diagram?
    11·1 answer
  • PLEASE HELP MEEEEEEE
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!