Is relationship between 7's in 7,742 and the 7's in 7,785 different in any way

1 answer:

4 0

It may not look like it, but there is. There are only two 7's in both numbers, but in 7,742, 42 can be divided by 7, and 7,742 can be divided by 7 as well, that gives it 4 relations to the number 7. In the number 7,785, 7 can not be divided into 85 or 7,785. I hope this made sense, I tried to explain it as well as I could

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jarptica [38.1K]

Answer:

1. 21 cm

2. 75 in

3. 11.25 yds

4. 9 mm

Step-by-step explanation:

3 0

3 years ago

Please give a step by step explanation if you can since I don't understand this.

alisha [4.7K]

Answer:

Red grapefruit costs more per pound.

Step-by-step explanation:

Red grapefruit

y =2x

This is in the form y= mx+b where m is the slope and b is the y intercept

The cost per pound is the slope, which is 2

The cost per pound is $2

Pink grapefruit

We need to find the slope

We have 2 points (0,0) and (4,4)

m = (y2-y1)/(x2-x1)

= (4-0)/(4-0)

=4/4

= 1

The slope is 1

The cost per pound is $1

5 0

3 years ago

Read 2 more answers

Find the equation of the tangent of x^2- xy + y^2 =7 at (-1, 2)

Citrus2011 [14]

Answer:

It is 3y = 4x + 10

Step-by-step explanation:

Let's first get the slope of the curve.

[ slope is the derivative of the equation ]

${x}^{2} - xy + {y}^{2} = 7$

introduce dy/dx :

$\frac{d}{dx} ( {x}^{2} - xy + {y}^{2} ) = \frac{d}{dx} (7) \\ \\ 2x - (y + \frac{dy}{dx} ) + 2y \frac{dy}{dx} = 0$

make dy/dx the subject:

$2x - y - \frac{dy}{dx} + 2y \frac{dy}{dx} = 0 \\ \\ 2y \frac{dy}{dx} - \frac{dy}{dx} = y - 2x \\ \\ \frac{dy}{dx} (2y - 1) = y - 2x \\ \\ \frac{dy}{dx} = \frac{y - 2x}{2y - 1}$