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Alina [70]
2 years ago
12

Erica, James, Stella, and Kim all did an experiment involving an electrically charged object. Who did repeated trials of his or

her experiment? (2 points)
Group of answer choices

Erica

Description Observation
Negatively Charged Balloon + Uncharged Paper The balloon attracts the paper.

Kim

Description Observation
Negatively Charged Balloon + Positively Charged Paper The balloon attracts the paper.

James

Description Observation
Positively Charged PVC Tube + Uncharged Paper The PVC tube attracts the paper.

Stella

Description Observation
Negatively Charged Balloon + Positively Charged PVC Tube The balloon attracts the PVC tube. The balloon attracts the PVC tube. The balloon attracts the PVC tube.
Mathematics
1 answer:
abruzzese [7]2 years ago
6 0

Answer:

D stella I think

Step-by-step explanation:

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Same test, similar question! please help!
soldier1979 [14.2K]

Answer:

Idg

Step-by-step explanation:

Please Explain in the comments

7 0
3 years ago
Read 2 more answers
How many buttons are found on a simple calculator? It is measured in the _____.
____ [38]

Answer: The minimum is 16, probably arranged in 4 rows of 4 buttons.


Step-by-step explanation: just grab a calculator lol



8 0
3 years ago
Read 2 more answers
I NEED THE ANSWER RIGHT NOW PLEASE!!!
strojnjashka [21]

Answer:

Second : 1/6 x + 47

Third : 1 2/3 x + 35 - 1 1/2 x + 12

Fourth : 5 (1/3x) + (5) (7) - (3) (1/2x) + (3) (4)

Step-by-step explanation:

I would start by expanding the expression, showing each step. Then, simplify by collecting like terms.

To expand, you multiply the term outside of the brackets by each term inside the brackets.

5(1/3x + 7) - 3(1/2x - 4)

= 5(1/3x) + (5)(7) - (3)(1/2x) + (3)(4)       Showing how to expand

= 5/3x + 35 - 3/2x + 12           Simplified above step by multiplying

= 5/3x - 3/2x + 47            Collected like terms (35 + 12 = 47)

= 10/6x - 9/6x + 47          Change fractions to the common denominator 6

= \frac{10-9}{6}x + 47   Combine fractions with common denominator

= 1/6x + 47              Fully expanded

See which options match the steps I took to expand the original expression.

The second step is the same as option 4.

The last step is the same as option 2.

I bolded those steps that are the same.

Some options use mixed fractions (whole numbers and fractions).

From the third step, I will convert the improper fractions to mixed fractions.

5/3x + 35 - 3/2x + 12

= 1 2/3x + 35 - 1 1/2x + 12

This is the same as option 3.

\frac{5}{3}x = 1\frac{2}{3}x    On the left side, 5 goes into 3 ONE time. The ONE becomes the whole number. After 5 goes into 3, there is 2 left, which becomes the numerator.

\frac{3}{2}x = 1\frac{1}{2}x   On the left side, 3 goes into 2 ONE time. The ONE becomes the whole number. The remainder is 1, which becomes the numerator.

6 0
3 years ago
Read 2 more answers
Doreen is flipping two fair coins. What is the probability that both coins land on heads?
andrezito [222]

Answer:

There are four different possible outcomes: both coins are heads, the red coin is heads and the blue coin is tails, the red coin is tails and the blue coin is heads, or both coins are tails. Each outcome has equal probability. So the probability of both being heads is 1/4.

Step-by-step explanation:


6 0
2 years ago
The equation c = start fraction: numerator: 5 denominator: 9: end fraction (f – 32) is used to convert temperature from degrees
krek1111 [17]
It will increase by 5/9 of a degree.

If you convert the given equation into slope intercept form, you will have:

c = (5/9)f + 160/9

In this form, it is easier to see the slope. The line would be increase by a rate of 5/9.
3 0
3 years ago
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