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
Kipish [7]
3 years ago
5

Please help

Mathematics
2 answers:
babymother [125]3 years ago
5 0
It is a valid sample because the first eight people were selected to participate? (the first one)
Vsevolod [243]3 years ago
5 0

Answer:

the answer is b

Step-by-step explanation:

You might be interested in
Does anyone know how to factor y^2+49?
Delvig [45]

Answer:

(y + 7i)(y - 7i)

Step-by-step explanation:

It cannot be factored using real numbers, but consider

7i × - 7i

= -49i² and i² = - 1

= 49

The factoring as a difference of squares to obtain

y² + 49 = (y + 7i)(y - 7i)

5 0
3 years ago
Read 2 more answers
The perimeter of the scalene triangle is 54.6 cm.
valina [46]
Are you sure it’s a scalene triangle because if you only know one side and all the other sides are different lengths then it’s impossible to computer unless we know angle measures. It would have to be isoceles or we would need angle measures
5 0
3 years ago
In 1963, the United States Postal Service started using ZIP (Zone Improvement Plan) codes. Each ZIP code is a sequence of five d
bija089 [108]
Here is how you find the number of possible U.S Zip codes. 
<span>Take note of this: There are 10 1 digit numbers: 0,1,2,3,4,5,6,7,8,9.
</span>And we have 5 slots. So in each slot, there can be 10 possible numbers. 
So let's put 10 in each blank slot. 
10, 10, 10, 10, 10.
Therefore, the final answer would be 100,000. There are 100,000 possibilities of different U.S zip codes. Hope this answer helps.
5 0
2 years ago
Amir stands on a balcony and throws a ball to his dog, who is at ground level.
Bumek [7]

Answer:

16 meters

Step-by-step explanation:

The height function is given by:

h(x)=-(x+1)(x-7)\\h(x)=-(x^2+x-7x-7)\\h(x)=-x^2+6x+7

The value of x, in seconds, for which the derivate of the height function is zero, is the time at which the maximum height occurs:

\frac{dh(x)}{dx}= h'(x)=-2x+6=0\\x=3

For x = 3 seconds, the height is:

h(3)=-(3^2)+6*3+7\\h(3)=16\ m

The maximum height that the ball will reach is 16 meters.

6 0
3 years ago
Read 2 more answers
1.2 as a fraction with a denominator of 8
Aleks04 [339]
The answer is 1 whole and 1 /18. Hope this helps!
3 0
3 years ago
Other questions:
  • a rope is 24 feet long. it is cut into two pieces such that one piece is half the length of the other. find the lengths of the t
    15·2 answers
  • Why is 16 a even number
    11·2 answers
  • Use the Factor Theorem to find ALL zeros of f(x) = x^3 - x^2 - 11x + 15, given that 3 is a zero. Show all work and express zeros
    12·1 answer
  • What is the slope of 7x+3y&lt;-26
    10·1 answer
  • You answer 24 questions on a 100 point test correctly and earn 96%.
    14·1 answer
  • Pls help asap<br>AABC ~ ADEF B. Х 8 А 'C E 3 6. D ' x = [?] Enter​
    9·1 answer
  • Find the slope. y - x = -5
    11·1 answer
  • The cost of 12 pounds of apples costs $35.50. What is equation for the cost in dollars, d, for the cost of a pound, p of apples
    10·2 answers
  • Pls help
    15·1 answer
  • Solve using quadratic formula for 2x^(2)-10x+5=0
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!