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BabaBlast [244]

3 years ago

10

Ms. Riders asked 15 piano students how many hours of practice they put in each week. The list shows the data she recorded.

1 answer:

Gekata [30.6K]3 years ago

7 0

See the attached image below for the dot plot. The center is at 8 with dots on either side of 8 being a mirror copy of one another. For example, there are 2 dots over 6 and 2 dots over 10

<h3>Answer: B. The data is symmetrical</h3>

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Which shows all the values of x that make the rational expression undefined? x = 6 x = 7 x = –6 or x = 6 x = –7 or x = 7

n200080 [17]

<h2>Explanation:</h2>

The rational expression is given by:

$E=\frac{2x^2-72}{5x^2-245} \\ \\ Factor \ out: \\ \\ E=\frac{2(x^2-36)}{5(x^2-49)} \\ \\ E=\frac{2(x-6)(x+36)}{5(x-7)(x+7)} : \ \ \ \ a^2-b^2=(a-b)(a+b)$

The denominator can't be zero, therefore:

$(x-7)(x+7)\neq 0 \\ \\ \\ Thus: \\ \\ \boxed{x\neq 7 \ and x \neq -7}$

Finally,<em> the values of x that make the rational expression undefined are </em>

<em></em>

<em>x = 7 and x = -7</em>

4 0

3 years ago

Johans age is given by the polynomial x^2-3x+7. Bret is younger and his age given by the polynomial x^2-x+1. What is the differe

yuradex [85]

(x^2-3x+7)-(x^2-x+1) = -2x+6

5 0

3 years ago

Which equation has the same slope as y = -5x - 4?

Sholpan [36]

Answer: Any equation that has a -5 before the x will have the same slope. Some examples could be:

y= -5x

y = -5x + 100

y = -5x - 3

6 0

3 years ago

Read 2 more answers

What is the value of x to the nearest tenth? A 14. B 14.4. C 13.5. D 13.2

Ivan

Answer:

x=13.5

Step-by-step explanation:

sin 48 = opposite/ hypotenuse

sin 48 = 10/x

multiply by x on each side

x sin 48 =10

divide by sin 48

x = 10/sin 48

x = 13.456

round to the nearest tenth

13.5

3 0

3 years ago

Read 2 more answers

The length of a rectangle is 4 centimeters more than its width. if the ratio of the length to width is seven to five, find the d

Marina86 [1]

L = 4 + w
l/w = 7/5
l = 7w/5

7w/5 = 5 + w
7w = 25 + 5w
2w = 25
w = 12.5

l = 4 + 12.5
l = 16.5

the dimensions are 16.5 x 12.5 cm

6 0

3 years ago