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
myrzilka [38]
3 years ago
6

When adding two rational numbers what will the sign be if both numbers are positive?

Mathematics
1 answer:
NikAS [45]3 years ago
4 0

Answer:

Step-by-step explanation:

Adding two rational numbers results in a positive sum.

You might be interested in
Please help me with this
Gnoma [55]

Answer:

3. glad to help

Step-by-step explanation:

5 0
3 years ago
Circle 1 has a diameter of 18 and circle 2 has a diameter of 20.
borishaifa [10]

Answer:

D. 59.66

Step-by-step explanation:

The formula is <em>A = \pi r^{2}[/tex\ Also the radius is half of the diameter. and [tex]\pi = 3.14</em>

so we need to find the area's

9 x 9 = 81

81 x 3.14 = 254.34

Next circle.

10 x 10 = 100

100 x 3.14 = 314

Now to find the difference.

314 - 254.34 = 59.66

59.66

Hope this helped! Please mark as brainliest! Thanks!

5 0
3 years ago
Evaluate 5c+cd when c=1/5 and d=15
oee [108]
5*1/5+1/5*15=4
    1  +  3   =4

This should equal 4 if I did this correctly.
4 0
3 years ago
Two professors in the mathematics building have offices that are consecutive odd numbers with a sum of 14,600. What are the offi
Serggg [28]

Answer: 7299, 7301

Step-by-step explanation:

x + x + 2= 14,600

2x = 14,598

x = 7,299

Therefore, the office numbers are 7299 and 7301

6 0
3 years ago
A company manufactures light bulbs. The lifetime for these bulbs is 4,000 hours with a standard deviation of 200 hrs. What lifet
Gnom [1K]

Answer:

<u>The company should promote a lifetime of </u><u>3589 hours</u><u> for these bulbs, so that only 2% of them burnout before the claimed lifetime.</u>

Step-by-step explanation:

Consider the lifetime of light bulbs is normally distributed. Then, μ = 4000 hours and σ = 200 hours.

Let X be the lifetime of bulbs. We need to find the lifetime before which only 2% (0.02) of the bulbs burn out. Suppose the value of this lifetime is y. then, we need to find out P(X<y) = 0.02.

We will use the z-score formula:

<u>z = (x-μ)/σ</u>

P(X<y) = 0.02

P((X-μ)/σ < (y-μ)/σ) = 0.02

P(z < (y-4000)/200) = 0.02

We can find the value of z at which the probability is 0.02 from the normal distribution (areas under the normal curve) table.

From the table we can see that 0.02 lies between z values -2.05 and -2.06. So,

z = [-2.05 + (-2.06)]/2

  = -4.11/2

z = -2.055

So,

(y-4000)/200 = -2.055

y-4000 = -411

y = 4000 - 411

y = 3589 hours

<u></u>

<u>The company should promote a lifetime of </u><u>3589 hours</u><u> for these bulbs, so that only 2% of them burnout before the claimed lifetime.</u>

3 0
3 years ago
Other questions:
  • Does this have any symmetry lines
    7·2 answers
  • My Friend John loves Epcot. It is his favorite park. He wanted to know if people who live in Florida like Epcot better than The
    8·1 answer
  • How do I work this problem out
    8·2 answers
  • A= (5/2) b= (-1/7)<br> Work out 2a + b as a column vector.
    7·1 answer
  • Hello wonderful children! ヽ(o^▽^o)ノ
    14·1 answer
  • The sales tax in Sandra's town is 6.5%. If she buys 2 shirts for $23.99 each and a pair of shoes for $41.99, how much sales tax
    15·1 answer
  • Pls help if you can Thx!
    11·2 answers
  • The Jones family is building a circular swimming pool. If the radius of the pool is 14 feet, what is its circumference? Use π =
    9·1 answer
  • HELP ASAP PLSSSSSSsssssss
    9·1 answer
  • What is the mean of 28 32 65 159 22 20 and 33 rounded to the nearest thousand ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!