Consider this equation.


7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)



Mia solved the equation and determined that m = 2. Is she correct?

She is incorrect because when substituting 2 for m the result was a true statement.

She is incorrect because when substituting 2 for m the result was a false statement.

She is correct because when substituting 2 for m the result was a true statement.

She is correct because when substituting 2 for m the result was a false statement.

Can someone please help me?

Answer:

I would say A. 56

Step-by-step explanation:

Answer:

2y + ( x- 20)= 500

y= 520-x/2

Step-by-step explanation:

Let the weight of George be x and the weight of the suspect be y .

The swing can hold a maximum of 500 pounds .

Twice the weight of suspect added with 20 pounds less than the weight of George equals 500.

2y + ( x- 20)= 500

or

2y+x- 20 = 500

adding 20 to both sides

2y+x -20 +20= 500+ 20

or

2y +x = 520

Subtracting x from both sides

2y+ x-x = 520-x

or

2y = 520-x

Dividing by 2 on both sides

y= 520-x/2

The suspect's weight is y= 520-x/2

Answer:

s = 260 - g/2

Step-by-step explanation:

Given the following :

Maximum weight swing can hold = 500 pounds

Let suspect's weight = s

George's weight = g

To reach maximum weight :

Double weight of suspect + (George's weight - 20)

Hence, equation:

2s + (g - 20) = 500

2s + g - 20 = 500

2s + g = 500 + 20

2s + g = 520

2s = 520 - g

Divide through by 2

s = 260 - g/2

Answer:

between 12 and 13

Step-by-step explanation:

answer is 12.4

Answer:

Step-by-step explanation:

12²=144

√144=12

13²=169

√169=13

√154 lies between 12 and 13.

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

<c & <f would be alternate interior angles because they're a pair of angles on the inner side of each of those two parallel lines but on opposite sides of the transversal.

Answer:

  3 5/11

Step-by-step explanation:

Tap A's rate is (10/11) bottle/min.

Tap B's rate is 3 4/5 = 19/5 times that of tap A. Then tap B's rate is ...

  (19/5)(10/11) bottles/min = 38/11 bottles/minute

Tap B fills 3 5/11 bottles in a minute.

Answer:

-27

Step-by-step explanation:

(-3)^3

This is the value inside the parentheses multiplied by itself 3 times

-3 * -3*-3

-27

Answer:

i think the answer is A

Step-by-step explanation:

Answer: m+1

Step-by-step explanation:

Answer:

Step-by-step explanation:

Just

Emliminate it by 3x’s

Answer:

HOPE THIS HELPED YOU

PLEASE MARK AS THE BRAINLIEST (ㆁωㆁ)

Answer:

answers below

Step-by-step explanation:

hi! you can plug in the x values given into the equation and solve for y to get your table values.

y=-1(0)+2

y=2

y=-1(1)+2

y=1

y=-1(3)+2

y=-1

y=-3/2 (-2) -1

y=2

y=-3/2 (0) -1

y=-1

y=-3/2 (2) -1

y=-4

hope this helps!

Answer:

40%

Step-by-step explanation:

240/600 = 0.40 * 100% = 40%

Answer:

the answer is -2 because positive divided by a negative is equals to a negative so positive 12 divided by -6 it will be equal to -2

Answer:

-2/45

Step-by-step explanation:

Hoped it helped!

Answer:

x = 159°

Step-by-step explanation:

x + 29° = 180° (Because they form a linear pair)

=> x = 180° - 29°

=> x = 159°

If my answer helped, kindly mark me as the brainliest!!

Thanks!!

Answer:

x will be 159 degrees

Step-by-step explanation:

x+29 = 180 I'm working on the same thing x=180 degrees -29 degrees that comes to 159 degrees

Answer:

y=1.20x+2.00

Step-by-step explanation:

Answer:

y=6/5x+2

Step-by-step explanation:

change in y/change in x =slope

8-2/5-0=6/5

y=mx+b

2=6/5(0)+b

2=b

Answer:

1/4 books per hour

Step-by-step explanation: Pls mark brainliest!

Answer:

it is 1\4 bro you working apix quiz don't be cheating

Step-by-step explanation:

Answer:

31/20 = 1.55

1.6

The mean of on road accidents reported to the police for the days in December is 6.7

In a group of numbers, the mean is the average or most common value. It is a measure of central tendency of a probability distribution along the median and mode in statistics.

It is given in the question about the  information on road accidents reported to the police for the days in December.

Mid point of (0-5) = 2.5

Mid point of (6-10) =8

Mid point of (11-15)=13

Mid point of (16-20) = 18

Mean = (∑Midpoint * frequency )/ (∑ frequency)

[tex]\rm Mean = \dfrac{2.5\times18+8 \times4+13\times6+18\times3}{18+4+6+3}\\\\\\\rm Mean = \dfrac{209}{31}\\[/tex]

Mean = 6.74

Mean = 6.7

To know more about Mean

https://brainly.com/question/13451489

#SPJ2

Answer:

z=77

Step-by-step explanation:

z/7−9=2

Step 1: Simplify both sides of the equation.

z−9+9=2+9

1/7z=11

z=77

(✿◠‿◠)

Answer: Change is 1 and the y-intercept is 1/2

Let me know if I’m wrong

Step-by-step explanation:

Answer:

33°

Step-by-step explanation:

In triangle ABC,

<ABC +<BAC+<ACB =180°[Sum of three angles of a triangle]

2x+15+2x+x=180

5x=180 - 15

x=165/5

x=33°

Hope this helps!!

Answer: No the deveiation of chicagos tempratures is actually higher than londons standard tempratures so its false

Step-by-step explanation:

Answer:

3,814,697,265,625

Step-by-step explanation:

Simplify the expression.

Answer:

Just do 812-78 that equals 734.

Answer:

734 pennies

Step-by-step explanation:

10 +68 =78 pennies that she gave to her sister and her brother

812 - 78 =734 pennies has

Answer:

7+3/8+4 x =-6

C. 7/8 + 3/4x = -6

D. 7/8x - 3/4 = 6

Step-by-step explanation:

Measure of an angle = x

Measure of another angle = x - 143.4

Each angle is the supplement of the other angle .

Which means :-

[tex]x + x - 143.4= 180[/tex]

[tex]2x - 143.4 = 180[/tex]

[tex]2x = 180 + 143.4[/tex]

[tex]2x = 323.4[/tex]

[tex]x = \frac{323.4}{2} [/tex]

[tex]\color{hotpink}x = 161.7[/tex]

Measure of the first angle :-

[tex]\color{hotpink} = 161.7°[/tex]

Measure of the second angle :-

[tex] = x - 143.4[/tex]

[tex] = 16.7 - 143.4[/tex]

[tex]\color{hotpink} = 18.3°[/tex]

As the sum of the measure of each angle adds up to 180° (161.7+18.3=180) , we can conclude that we have found out the correct value of each of the angles .

Therefore , the measure of the first angle is = 161.7° and the measure of it's supplementary angle is = 18.3° .

Answer:

Step-by-step explanation:

a-As he had earned $45.00 for cutting lawns and had earned $35.75 for yard work during the week and had not earned more than that, in order to find the total amount of money he earned during the week, we have to add $45.00 and $35.75 together which will be $80.75. So we can say that he had earned $80.75 during the week.

b- Since he had spent $25.23 on food and $22.12 on gas, we have to add them to get the total amount of money spend during the week. So after adding the amount of moneys spent, we will get $47.35.

c- Finally, to find out how many money he was left with, we have to subtract the amount of moneys spent from the total amount of earnings for the week. So, after subtracting $47.35 from $80.75 he is left with $33.4.