Chris wrote a equation and the first step of his solution process, as shown. what math operation did Chris apply in his first step

Answer:

3

Step-by-step explanation:

cross multiply

Answer:

They have the same end results

Step-by-step explanation:

Given

The missing equations are:

[tex]7 / \frac{1}{4} =[/tex]

[tex]7 * 4 =[/tex]

Required

Make a generalization about the equations

First, we solve both equations.

(1)

[tex]7 / \frac{1}{4} =[/tex]

[tex]7 / \frac{1}{4} = 7 * 4[/tex]

[tex]7 / \frac{1}{4} = 28[/tex]

(2)

[tex]7 * 4 =[/tex]

[tex]7 * 4 = 28[/tex]

From the solutions to the above equations, we can see that both equations have the same end result;

i.e.

[tex]7 / \frac{1}{4} = 7 * 4 = 28[/tex]

Hence;

A generalization can be: "they have the same end results"

Answer:

mark R as a 6

Step-by-step explanation:

Answer:

i

Step-by-step explanation:

Answer:

16.2

Step-by-step explanation:

Answer

16....... my bad it's 16.2 I miscalculated

Step-by-step explanation:

To round a number to the nearest tenth , look at the next place value to the right If it's 4 or less, just remove all the digits to the right. If it's 5 or greater, add 1 to the digit in the tenths place, and then remove all the digits to the right.

Answer:

Density = 9 dolphins / mi^2 This is the result.

Step-by-step explanation:

Number of dolphins = 175

Radius = 2.5 mi

1. - Calculate the area

Area = pi* r^2

Area = 3.14*2.5^2

Area = 3.14*6.25

Area = 19.625 mi^2

2. - Calculate the density

density = dolphins/mi^2

- Substitution

density = 175 / 19.625

Result

density = 8.9 dolphins/mi^2

Rounding to the nearest whole number

Density = 9 dolphins / mi^2

Answer:

Area of half circle = 1/2 x π x r^2

= 1/2 x 3.14 x 2.5^2

= 9.8125 miles²

For the density divide the number of dolphins by the area:

Density =population/area= 175/9.8125 = 17.83 dolphins/mile²

the population density of the dolphins is 18dolphin/miles²

Answer:

t2-t1= 3-5 = -2

answer= -2

Answer:

D

Step-by-step explanation:

Answer: A

              D

              E

Step-by-step explanation:just got it right

Answer:

1/2

Step-by-step explanation:

3/8 + 1/8=

4/8=

1/2

Answer:

sorry guys real sorry i dont know it zoom it more

Step-by-step explanation:

[tex]a=2.2[\frac{m}{s^2}]\\v_0=22[\frac{m}{s}]\\t=19[s]\\\\a = \frac{\Delta v}{t}\\\Delta v=at=41.8[\frac{m}{s}]\\v = v_0+\Delta v=63.8[\frac{m}{s}][/tex]

Answer: The velocity will be 63.8 m/s.

Answer:

1100

Step-by-step explanation:

179+892 is 1071. However we will round up since 1071 is closer to 1100 compared to 1000. Hope this helps!

Answer:

60 m

Step-by-step explanation:

Trapezoid area formula:

[tex]A=\frac{a+b}{2} h\\\\A=\frac{18+12}{2} 4\\\\\frac{30}{2} *4\\\\15*4\\60[/tex]

Answer:

Trust me

Step-by-step explanation:

Answer:

ikr they put this cuttly.com /... thing in it right

Step-by-step explanation:

Answer:

x=12

Step-by-step explanation:

ab=dc so 15=x+3 you subtract 3 from both sides... x=12

Answer:

d.   $8,623.40

Step-by-step explanation:

EDGE 2021

Step-by-step explanation:

1. GFE = right angle = 90°

x + 20 = 90

x = 90 - 20

= 70

2. x + 36 = 90

x = 90-36

= 54

Answer:

The total fraction shaded is 1/2

Step-by-step explanation:

Here, we want to know the fraction shaded

As we can see, the box is originally divided into 4

So each of the 4 parts are 1/4

for the first part, we have 4 divisions;

This means each of the divisions with respect to the whole fraction will be 1/4/4 = 1/16

Now, two of these are shaded, making 1/16 and 1/16

Secondly, we have half of the 1/4 : So with respect to the whole, we have 1/4/2 = 1/8

for the third part, the whole 1/4 is shaded

and lastly, we have an unshaded 1/4

so, the total fraction shaded will be ;

1/16 + 1/16 + 1/4 + 1/8

= (1 + 1 + 4 + 2)/16 = 8/16 = 1/2

Answer:

2x-42=64

Step-by-step explanation:

Answer:

The answer is 17

Step-by-step explanation:

First, add 9 to 8

17 = u

Answer:

u=17

Step-by-step explanation:

8=-9+u

-u=-9-8

-u=-17

u=-17

Your answer: 3^3 + 3(4 + 1/3) = 40

Answer: 130

Step-by-step explanation: I first did 4+1/3 which is 4 1/3 and then I did 3^3 which is 27 then I added 3 to 27 and I multiplied 27 and 4 1/3 and got 130.

Answer:

x=42

Step-by-step explanation:

2*(

1

2

x)=(2)*(21)

Answer:

8c2 - 4c - 12

Step-by-step explanation:

Answer:

8c^2-4c-12

Step-by-step explanation

So you have to multiply 4c into 2c and -3 first and then 4 into 2c and -3.

(4c+4)(2c-3)

4c X 2c is 8c^2

(4c+4)(2c-3)

4c X -3 is -12c

So for the 4c multiplying in you would get 8c^2 and -12c, but we still have to multiply in the 4

4 X 2c is 8c

(4c+4)(2c-3)

4 X -3 is -12

So then we would get 8c^2-12c+8c-12, however we can still combine the -12c and the 8c.  Combining those would get -4c.  So the final answer is 8c^2-4c-12

Answer:

2 hours

Suzy would earn $40

Bill will earn $40

they will both earn $80

Step-by-step explanation:

The total amount suzy earns is a function of the total hours worked. Let t represent time

total income of suzy = $20t eqn 1

Bill's income = starting bonus + variable pay

= $20 + $10t

We are looking for when they would earn the same amount :

20t = $20 + $10t  eqn 2

collect like terms and solve for t

10t = $20

t = 2 hours

Substitute for t in either eqn 1 or 2

20(2) = $40

Suzy would earn $40

Bill will earn $40

they will both earn $80

Answer:

24 Girls

Step-by-step explanation:

3/4 = 18/x

3*x = 18*4

3x=72

3x/3=72/3

x=24

Answer:

When a vertical line is placed across the plot of this relation, it intersects the graph more than once for some values of x. If a graph shows two or more intersections with a vertical line, then an input (x-coordinate) can have more than one output (y-coordinate), and y is not a function of x.

Step-by-step explanation:

Answer:

Ben franklin

Step-by-step explanation:

Answer:

Ben Franklin

Step-by-step explanation: