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
Jet001 [13]
2 years ago
8

Please help!!,, with explanation

Mathematics
1 answer:
noname [10]2 years ago
7 0

Answer:

c and d

Step-by-step explanation:

3 x 3 = 1

25/25 = 1

any value multiplied by 1 remains itself

You might be interested in
Toss a coin 7 times. what is the number of sequences of heads or tails?
dezoksy [38]
2 to 7 or 2/7 or 2:7
5 0
2 years ago
I need help, what do I do?
AnnZ [28]
I'm sorry sorry don't no understand brother
6 0
3 years ago
Eight more than twice a number is eight. Find the number.
spin [16.1K]

Answer:

0

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
4. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. In a
borishaifa [10]

675 people will have score between 85 and 120

Step-by-step explanation:

Given

Mean = 100

SD = 15

If we have to find percentage of score between two values we have to find the z-score for both values and then area under the curve for both values

z-score is given by:

for a value x:

z-score = \frac{x-mean}{SD}

So,

For 85:

z-score = z_1 = \frac{85-mean}{SD}\\ = \frac{85-100}{15}\\=\frac{-15}{15}\\=-1

z-score = z_2 = \frac{120-mean}{SD}\\ = \frac{120-100}{15}\\=\frac{20}{15}\\=1.3333

Now we have to find the area under the curve for both values of z-score. z-score tables are used for this purpose.

So,

For z1 : 0.1587

For z2: 0.9082

The area between z11 and z2:

z_2-z_1 = 0.9082-0.1587=0.7495

So the probability of score between 85 and 120 is 0.7495

As the sample is of 900 people, the people with scores between 85 and 120 will be:

900*0.7495 = 674.55 people

Rounding off to nearest whole number

675 people will have score between 85 and 120

Keywords: Probability, SD

Learn more about probability at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026

#LearnwithBrainly

4 0
3 years ago
What number is 7 units to the left of -1?
g100num [7]

Answer:

the answer to your question is -8

8 0
3 years ago
Other questions:
  • What is area of a park that is 100 yards square
    9·1 answer
  • What one is the biggest 7/11, 9/11, 20/11, 8/11, 2/11
    5·1 answer
  • Estimate the area of a circle. use 22/7 for pi
    11·2 answers
  • Write an equation in slope-intercept form of the line that passes through the point (3,-2) with slope -2.
    5·1 answer
  • Joshua is five years older than David. Simon is four years older than Joshua and nine years older than David. Simon’s and David’
    8·1 answer
  • Which expression is equal to 6(−3m)4?
    7·1 answer
  • Simplify<br> -3/4(5p-12)+2(8-1/4p)
    14·1 answer
  • A man bought 5 laptops and a desktop for taka 229600. If a laptop costs taka 32750 find the cost of the desktop
    11·2 answers
  • PLEASE HELP!!!! ILL GIVE BRAINLIEST!!!!!!!
    15·1 answer
  • Write an equation that represents the line
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!