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
Cloud [144]
3 years ago
5

What number times itself three times equals -2

Mathematics
1 answer:
Gennadij [26K]3 years ago
6 0
-1.3 cubed equals approxiamately -2

You might be interested in
For what value of r is the parallelogram a rhombus
Gre4nikov [31]

Answer:

9

Step-by-step explanation:

7r+18=r²

r²-7r-18=0

factorizing

r²+2r-9r-18=0

r(r+2)-9(r+2=0

(r-9)(r+2)=0

r-9=0

r=9

check

(r²)=(9*9)=81

7r+18=7(9) + 8=81

5 0
3 years ago
Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standa
inessss [21]

Answer:

a) 0.4164

Step-by-step explanation:

Mean lifespan (μ) = 18.8 days

Standard deviation (σ) = 2 days

For any given lifespan 'X', the z-score is:

z=\frac{X- \mu}{\sigma} \\z=\frac{X- 18.8}{2}

For X=12.04 days:

z=\frac{12.04 - 18.8}{2} \\z=-3.38

A z-score of -3.38 falls in the 0.036-th percentile of a normal distribution.

For X=18.38 days:

z=\frac{18.38 - 18.8}{2} \\z=-0.21

A z-score of -3.38 falls in the 41.68th percentile of a normal distribution.

The probability that a butterfly lives between 12.04 and 18.38 days is

P=41.68-0.036\\P=41.64\%\ or\ 0.4164

6 0
3 years ago
Complete the page for 15 points.
sergey [27]

Answer:

1. 15, 16, 17

2. 21, 23, 25

3. 44, 46, 48

4. -4, -3, -2

Step-by-step explanation:

1)

Step 1. Writing an equation

Let's set x as the second number in the equation.

This means that the first number is x-1, and the third number is x+1.

We know that the sum of the three numbers is 48, so:

(x-1)+x+(x+1)=48

Step 2. Solving the equation

x-1+x+x+1=48

x+x+x-1+1=48

3x=48

x=16

<em>So the answer is 15, 16, 17</em>

2)

Again, let's set x as the middle number.

Odd numbers are 2 numbers apart, so the first number is x-2, and the third is x+2.

This means that the equation must be:

(x-2)+x+(x+2)=69

x+x+x=69

3x=69

x=23

<em>The numbers are 21, 23, and 25</em>

3)

x will be the middle number

Even numbers are 2 numbers apart, so the first number is x-2, and the third is x+2.

This means that:

x-2+x+x+2=138

x+x+x=138

3x=138

x=46

<em>The numbers are 44, 46, and 48.</em>

4)

x will be the middle number.

x-1=first number, x+1=third number

x-1+x+x+1=-9

3x=-9

x=-3

<em>The numbers are -4, -3, and -2.</em>

3 0
3 years ago
2 times the difference between 49.5 and 37.5
Xelga [282]
I belive the answer would be....
49.5-37.5=12
2•12=24
6 0
2 years ago
Read 2 more answers
There are 12 singers standing. there are 7 less standing than is sitting. how many are sitting?
damaskus [11]

There are 19 singer sitting

7 0
3 years ago
Other questions:
  • Find the first term of the following geometric sequence:<br><br> , 15, 45, 135, 405,
    8·1 answer
  • A science teacher needs to choose 4 students from a class of 20 to go to the library to do some research. How many different gro
    12·1 answer
  • The area of a rectangle is 14 yd2 , and the length of the rectangle is 3 yd less than twice the width. find the dimensions of th
    15·1 answer
  • What is m&lt;A to the nearest tenth?​
    9·1 answer
  • Which graphs below represent an exponential function? Select all that apply.
    9·2 answers
  • PLZZ PLZZ HELP FASTTT will give brainliest answer and thanks
    8·1 answer
  • Find the central angle of a sector of a circle of the area of the sector and the area of the circle are in the proportion of 3:5
    11·1 answer
  • Name two linear expression whose difference is 5x-4
    5·1 answer
  • A coin is tossed four times. What is the probability of getting tails four times in a row?
    6·1 answer
  • you are given a fraction in simplest form. the numerator is not zero.when you write the fraction as a decimal,it is a repeating
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!