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3 years ago

10

Payton collected data to show the relationship between the number of hours he practices and the number of errors he makes when p

laying a new piece of music. The table shows his data.

2 answers:

NeTakaya3 years ago

8 0

Answer:

b

Step-by-step explanation:

storchak [24]3 years ago

6 0

Answer:the answer is B

Step-by-step explanation:

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Which equation can be used to solve for x in the following diagram?

masha68 [24]

Answer:

B

Step-by-step explanation:

Angle is 180

combine like terms

180/9=20

X=20

4x+5x=180

4(20)+5(20)=180

hope this helps

7 0

3 years ago

Read 2 more answers

Solving multistep linear equations and inequalities<br>help me please

butalik [34]

Answer:

Step-by-step explanation:

Part A:

C = 10t + s

Part B:

10(3) + 8

30 + 8 = $38

5 0

3 years ago

In 2001, gold was priced at (0.5x + 300) dollars per ounce. Its price tripled in 2008 and then doubled in 2011. In 2016, its pri

zloy xaker [14]

Given:

Price of gold in 2001 = (0.5x+300)

Its price tripled in 2008 and then doubled in 2011. In 2016, its price dropped to $\dfrac{2}{3}$ of the price in 2011.

To find:

An expression for the price of gold per ounce in 2016.

Solution:

We have,

Price of gold in 2001 $= (0.5x+300)$

Its price tripled in 2008.

Price of gold in 2008 $= 3(0.5x+300)$

Then doubled in 2011.

Price of gold in 2011 $= 2\times 3(0.5x+300)$

In 2016, its price dropped to $\dfrac{2}{3}$ of the price in 2011.

Price of gold in 2016 $=\dfrac{2}{3}\times 2\times 3(0.5x+300)$

$=2\times 2(0.5x+300)$

$=4(0.5x+300)$

$=4(0.5x)+4(300)$

$=2x+1200$

Therefore, the required expression for the price of gold per ounce is (2x+1200).

8 0

3 years ago

1/2x+4=9 solve for x

Tju [1.3M]

Answer: x=10

Step-by-step explanation: Hope this help :D

5 0

3 years ago

Read 2 more answers

The roots of 2x^{2} + 3x = 4 are α and β. Find the simplest quadratic equation which has roots <img src="https://tex.z-dn.net/?f

elena-s [515]

$2x^2+3x=4\implies2x^2+3x-4=0\implies x=\dfrac{-3\pm\sqrt{41}}4$

Let $\alpha$ be the root with the positive square root and $\beta$ the root with the negative square root. Then

$\dfrac1\alpha=\dfrac4{-3+\sqrt{41}}\quad\text{and}\quad\dfrac1\beta=\dfrac4{-3-\sqrt{41}}$

The simplest quadratic with these roots can be written as

$\left(x-\dfrac1\alpha\right)\left(x-\dfrac1\beta\right)=x^2-\left(\dfrac1\alpha+\dfrac1\beta\right)x+\dfrac1{\alpha\beta}=x^2-\dfrac34x-\dfrac12$

4 0

3 years ago