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Anton [14]
4 years ago
11

Yannick’s class measured the width of one leaf several times. The values that the class recorded included 10 mm, 8 mm, 15 mm, 5

mm, and 13 mm. What is lacking from the measurements that the class made?
A.calibration
B.precision
C.repetition
D.validation
Mathematics
2 answers:
Lelechka [254]4 years ago
7 0

Answer:

The answer is b i just took the test

Step-by-step explanation:

MariettaO [177]4 years ago
4 0
"Precision" is the one among the following choices given in the question that is <span>lacking from the measurements that the class made. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has come to your desired help.</span>
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For what value of x is the rational expression below equal to zero x-4/(x+5)(x-1)
Tanzania [10]
We have that

<span>(x-4)/(x+5)(x-1)
</span> the rational expression is equal to zero <span>whenever its numerator is zero
</span>x-4=0---------> x=4

the answer is x=4
4 0
4 years ago
How to solve quadratic inequalities.
Digiron [165]

Find all the zeros of the polynomial, and arrange the zeros in increasing order. ...

Plot those numbers on the number line as open or closed points based upon the original inequality symbol.

Choose a test value in each interval to see if the interval satisfies the inequality or not.

6 0
2 years ago
Can somebody help me, please?
Lubov Fominskaja [6]

Answer:  x = 9.6

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

Explanation:

We have two smaller right triangles that are glued together so to speak.

The base of the smaller triangle on the left is 5 while the height is h.

Let's use the tangent rule to find the value of h

tan(angle) = opposite/adjacent

tan(55) = h/5

5*tan(55) = h

h = 5*tan(55)

h = 7.14074003371058

Make sure your calculator is in degree mode. That value of h above is approximate.

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

Now focus on the smaller triangle on the right

It has the same height value h. This side is the adjacent side while x is the hypotenuse.

We'll use the cosine ratio

cos(angle) = adjacent/hypotenuse

cos(42) = h/x

cos(42) = 7.14074003371058/x

x*cos(42) = 7.14074003371058

x = 7.14074003371058/cos(42)

x = 9.6088135029715

x = 9.6

4 0
3 years ago
Do the ratios 8/ 5 and 11 /6 form a proportion?
nordsb [41]

Answer:

no they don't

hope this helps

have a good day :)

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP ASAP!!!!
musickatia [10]
Let us model this problem with a polynomial function.

Let x =  day number (1,2,3,4, ...)
Let y = number of creatures colled on day x.

Because we have 5 data points, we shall use a 4th order polynomial of the form
y = a₁x⁴ + a₂x³ + a₃x² + a₄x + a₅

Substitute x=1,2, ..., 5 into y(x) to obtain the matrix equation
|   1     1    1    1    1  |  | a₁ |      | 42 |
| 2⁴  2³  2²  2¹  2⁰  |  | a₂ |      | 26 |
| 3⁴  3³  3²  3¹  3⁰   |  | a₃ |  =  | 61 |
| 4⁴  4³  4²  4¹  4⁰   |  | a₄ |      | 65 |
| 5⁴  5³  5²  5¹  5⁰  |  | a₅ |      | 56 |

When this matrix equation is solved in the calculator, we obtain
a₁ =      4.1667
a₂ =  -55.3333
a₃ =  253.3333
a₄ =  -451.1667
a₅ =   291.0000

Test the solution.
y(1) = 42  
y(2) = 26
y(3) = 61
y(4) = 65
y(5) = 56

The average for 5 days is (42+26+61+65+56)/5 = 50.
If Kathy collected 53 creatures instead of 56 on day 5, the average becomes
(42+26+61+65+53)/5 = 49.4.

Now predict values for days 5,7,8.
y(6) = 152
y(7) = 571
y(8) = 1631


3 0
3 years ago
Read 2 more answers
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