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babunello [35]
3 years ago
14

Ok, I am stumped. Can I have some help please??

Mathematics
1 answer:
stepan [7]3 years ago
5 0
We start at line 128 and sample two-digit numbers.  The first number is 53, which is invalid.  The second is 53, which is also invalid.  Then we have 79 followed by 64, which are invalid.  Finally, we have 28, which is a valid number, followed by 40 and 11, which are also within our population.  Then we get 52, 74, 67, 90, 82, and 65, which are invalid.  Lastly, we have 23, a valid member of the population.

Our sample thus includes the members labeled 11, 23, 28, and 40.
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Find the domain of the function. Write your answer in interval<br> notation. f(x)=-4x² + 5x +1
nirvana33 [79]

Answer:

All real numbers

(-∞, ∞)

Step-by-step explanation:

Domain is the set of x-values that can be inputted into function f(x).

We see here that our function is a parabola. We also see that we can plug in any number <em>x </em>and we would get an output <em>y</em>. Therefore, our domain is all real numbers:

(-∞, ∞)

6 0
3 years ago
William can eat 17 hot dogs in 5 minutes. If he continues to eat at the same rate, how long will it take him to eat 68 hotdogs.
lidiya [134]

Answer:

20 Minutes

Step-by-step explanation:

First find out how many he eats per minute. 17/5 = 3.4

Then multiply 3.4 by all the answers until you get the right answer.

5 0
3 years ago
Plz help me ill give u brainlist
iren2701 [21]
Total Area = 2( 32 x 79) + (26 x 42) = 6148 m²

Number of 4 m² = 6148 ÷ 4 = 1537

Answer: The zoo can have 1537 plants.
8 0
3 years ago
Read 2 more answers
Could someone please help on this question? I’m giving 20 points and brainliest but I need it quickly so please help!
AnnZ [28]
<h3>Answer:  HF = 5</h3>

=============================================

Explanation:

Refer to the diagram below. I'm adding in points A and B, which are marked in blue. I'm also adding in variables x, y, and z.

The goal is to find HF, so let's make that equal to x. This is also equal to HB because they are radii of the same circle.

Let y be the length of segments JA and JB.

Let z be the length of segments CF and CA.

So in short we have

  • x = HF = HB
  • y = JA = JB
  • z = CF = CA

We know that

  • CH = 13
  • HJ = 19
  • CJ = 22

This must mean

  • CH = CF+HF = z+x = 13
  • HJ = HB+JB = x+y = 19
  • CJ = CA+JA = z+y = 22

Or in short,

  • z+x = 13
  • x+y = 19
  • z+y = 22

Let's solve the first equation for z to get z = -x+13. I subtracted x from both sides.

Now plug this into the third equation to get

z+y = 22

(z) + y = 22

(-x+13) + y = 22 ... replace z with -x+13

-x+13+y = 22

-x+y+13 = 22

-x+y = 22-13 .... subtract 13 from both sides

-x+y = 9

------------------------------------

So we have this reduced system of equations of two variables and two equations

  • x+y = 19 ... found earlier
  • -x+y = 9 .... what we just found above

Add the equations straight down. This is the elimination property.

Doing so leads to the x terms canceling out since x + (-x) = 0x = 0

The y terms add to y+y = 2y

The terms on the right hand side add to 19+9 = 28

We are left with 2y = 28 which solves to y = 28/2 = 14.

If y = 14, then,

x+y = 19

x+14 = 19

x = 19-14

x  = 5

In which we can then say

z = -x+13

z = -5+13

z = 8

Though we don't need to find z (unless you're curious about it).

Since x = 5, and we set HF equal to x, this means that HF = 5.

6 0
3 years ago
5)
White raven [17]
8x=6x+20 Btw I figures it out x=10
4 0
3 years ago
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