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Elanso [62]
4 years ago
5

Please help ASAP Payton collected data to show the relationship between the number of hours he practices and the number of error

s he makes when playing a new piece of music. The table shows his data. Which is the approximate slope of the line of best fit for the data? –5.5 –4.5 –2.0 –1.0

Mathematics
1 answer:
azamat4 years ago
5 0

Answer:

Option B.

Step-by-step explanation:

The general equation of best fit line is

y=ax+b

where, a is the slope of best fit line and b is y-intercept.

Using graphing calculator a=-4.54762 and b=43.7143. So equation of best fit line is

y=-4.54762x+43.7143

Here,

Slope=-4.54762

Slope\approx -4.5

Note: In alternate method, you can use the below formula to find slope.

m=\dfrac{\overline{x}\cdot \overline{y}-\overline{xy}}{(\overline{x})^2-\overline{x^2}}

Therefore, the correct option is B.

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Answer:

g 78 degress

Step-by-step explanation:

6 0
3 years ago
Allowing 20 % discount on the marked price of an article and levying 15 % VAT. a buyer has to pay Rs 9.200 for the article. Find
nata0808 [166]

Answer:

here I'm confused that whether the selling price is Rs.9,200 or Rs.9.200

any ways you can take the help of below procedure

Step-by-step explanation:

here,

let marked price be X

discount(d)=20%

VAT=15%

SP with VAT= 9200

now,

SP without VAT= SP - VAT of SP

= 9200-15/100 ×9200

= 9200- 1380

=Rs. 1380

again,

SP= MP - D of MP

or,7820= x- 20/100 × x

or, 7820× 100 = 100x- 20x

or,782000=80x

or, 782000/80=X

or, X= 9775.

hence MP is Rs 9775

8 0
3 years ago
List the prime factorization of 2,800
alisha [4.7K]

Answer:

2800

/ \

2 1400

/ \

2 700

/ \

2 350

/ \

2 175

/ \

5 35

/ \

5 7

/ \

7 1

3 0
4 years ago
Choose the correct simplification of the expression 16 over n to the negative third power. n to the third power over 16 16 over
jarptica [38.1K]

Answer:

{16n}^{3}

Step-by-step explanation:

We want to simplify:

\frac{16}{ {n}^{ - 3} }

To simplify this, we need to write the negative index as positive.

So we use the property,

\frac{1}{ {a}^{ - n} }  =  {a}^{n}

When we apply this property, we get:

\frac{16}{ {n}^{ - 3} }  = \: 16 \times \frac{1}{ {n}^{ - 3} }  =16 {n}^{3}

Therefore the fourth option is correct.

8 0
4 years ago
Solve the following equation for L<br> P=2L+2W
Maslowich
P=2L+2W
P-2W=2L
P/2-W=L
L=P/2-W
3 0
3 years ago
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