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3 years ago

Part D The narrator in the video said that sometimes our observations are unreliable. What was he referring to?

Mathematics

2 answers:

atroni [7]3 years ago

6 0

Answer:

The fireball was speeding up as it moves upwards, but a measurement of motion shows that isn't true, so our observations can be unreliable.

Step-by-step explanation:

Edmentum answer just wrote in my own way a little! Hope this helps you! Have a great day!

Sati [7]3 years ago

6 0

Answer: After the launch, the fireball seems to be speeding up as it’s moving upward. But a measurement of motion shows that this isn’t true, so our observations are sometimes unreliable.

Step-by-step explanation: Exact answer from plato

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A baker has 2 1/4 cups of blueberries to make three batches of muffins. How many cups of blueberries should the baker put into e

Marat540 [252]

Answer:

0.75

Step-by-step explanation:

To answer this question you need to divide 2 1/4 by 3. To make it easier turn 2 1/4 to 2.25 because .25 = 1/4.

4 0

3 years ago

SEE QUESTION IN IMAGE

Pavel [41]

Answer:

5, 6, 7

(5 + 6 + 7)/3 = 6

<u>Standard deviation:</u>

σ = $\sqrt{((5 - 6)^2+(6-6)^2+(7-6)^2)/3} = \sqrt{2/3}$

Correct choice is d

-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

(-5 -4 - 3 - 2 - 1 + 0 + 1 + 2 + 3 + 4 + 5)/11 = 0

<u>Standard deviation:</u>

σ = $\sqrt{((-5)^2+(-4)^2+(-3)^2+(-2)^2+(-1)^2+0^2+1^2+2^2+3^2+4^2+5^2)/11} = \sqrt{10}$

Correct choice is d

3, 4, 5, 6, 7

<u>Standard deviation:</u>

σ = $\sqrt{((3-5)^2+(4-5)^2+(5-5)^2+(6-5)^2+(7-5)^2)/5} = \sqrt{2}$ ≈ 1.4

Correct choice is d

5 0

3 years ago

Evaluate the expression <br> 33(4a), if a = 2.

Alexandra [31]

Answer:

33(4a) =264

Step-by-step explanation:

Parentheses

Exponents

Multipication

Division

Addition

Subtraction

so, if we do parentheses first 4 times 2 will equal 8 then 33 x 8=264

you're welcome :D

6 0

3 years ago

Determine the intercepts of the line.

spayn [35]

ANSWER:
y intercept = (0,-6/5)
x intercept = (-3,0)

EXPLANATION:
To find the y intercept you have to substitute the x with zero because the y intercept always lies on the y axis which means that they will always have the coordinates (0,y)
The same goes for the x intercept. To find the x intercept you have to substitute the y with zero because the x intercept always lies on the x axis which means that they will always have the coordinates (x,0)

WORKING OUT:
Given=2x+5x= -6

The y intercept)
x=0
2(0)+5y= -6
5y= -6
y = -6/5 (divide each side of the equation by t to get the y alone)
y intercept = (0,-6/5)

The x intercept)
y=0
2x+5(0)= -6
2x= -6
x = -3 (divide each side of the equation by t to get the x alone)
x intercept = (-3,0)

6 0

3 years ago

3(x - 2) – 2x + 3 = -12

Inga [223]

Answer:

hii

Step-by-step explanation:

3(x-2)-2x+3=-12

3 times x = 3x

3 times -2 = -6

3x-6-2x+3=-12

3x + 2x = 5x

-6 + 3 =-3

i don't know the rest I'm sorry

6 0

3 years ago