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3 years ago

13

Jeffrey purchase and download 12 songs on Monday he purchase an additional 3 songs on Tuesday the cost to download each song is

$2 write a numeral expression to represent the situation

1 answer:

bonufazy [111]3 years ago

4 0

(12x3)+(3x2) Because on Monday he bought 12 songs for $3 each and on Tuesday he bought 2 songs for $3 each.

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Which polynomial function could be represented by the graph below? Help please

AfilCa [17]

Answer:

$f(x)=2x^2+2x-4$

Step-by-step explanation:

8 0

3 years ago

Julie spend 5.62 dollars at the store. Micah spends 5 times as much as Julie. Jermy spends 6.72 more than micah. How much money

Arturiano [62]

Julie : 5.62

Micah : 5.62 x 5 = 28.1

Jermy : 5.62 + 6.72 = 12.34

7 0

4 years ago

Read 2 more answers

What is the volume of the plastic rocket???

Marina86 [1]

Answer:

151 in^3

Step-by-step explanation:

The rocket consists of two shapes - a cone and a cylinder

the volume of the plastic = volume of cone + volume of cylinder

volume of a cylinder = nr^2h

Volume of a cone 1/3(nr^2h)

n = 22/7

r = radius

the diameter is the straight line that passes through the center of a circle and touches the two edges of the circle.

A radius is half of the diameter

Radius = 5/2 = 2.5

Height of cone = 11 - 6 = 5

Volume of plastic = (22/7) x (2/5^2) x 6 + (1/3) x (22/7) x (2/5^2) x 5 = 117.9 + 32.7 = 150.6 in^3 = 151

5 0

3 years ago

40 points, please help with all of them

Kitty [74]

Answer:

$\large\boxed{Q1.\ \text{2 times greater}}\\\\\boxed{Q2.\ J. 3}\\\\\boxed{Q3.\ B. -\dfrac{4}{5}}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Q1.

We have the equation of a line <em>p </em>in the standard form

$4x-3y=7$

Convert to the slope-intercept form:

$4x-3y=7$ <em>subtract 3x from both sides</em>

$-3y=-4x+7$ <em>divide both sides by (-3)</em>

$y=\dfrac{4}{3}x-\dfrac{7}{3}$

The slope $m_1=\dfrac{4}{3}$

From the table we have the points (4, 3) and (7, 5). Calculate the slope of line <em>q</em>:

$m_2=\dfrac{5-3}{7-4}=\dfrac{2}{3}$

Divide the slope of <em>p</em> by the slope of <em>q</em>:

$\dfrac{4}{3}:\dfrac{2}{3}=\dfrac{4}{3}\cdot\dfrac{3}{2}=2$

Q2.

Parallel line have the same slope. Therefore, if we have the equation of the line in the slope-intercept form, then we have the slope:

$y=3x+2\to m=3$

Q3.

Parallel line have the same slope.

Calculate the slope from given points (-11, 5) and (-6, 1):

$y=\dfrac{1-5}{-6-(-11)}=\dfrac{-4}{-6+11}=\dfrac{-4}{5}=-\dfrac{4}{5}$

6 0

3 years ago

Find a − b when a = −7 and b = 11.

Mariana [72]

Answer:

-18

Explanation:

a - b

a = -7

b = 11

Insert -7 for 'a' and 11 for 'b'

-7 - 11

= -18

3 0

3 years ago