MATHEMATICS HIGH SCHOOL

How would u solve 7c + 12 = -4c + 78

Answers

Answer 1
Answer:

The solution of expression 4m + 9 + 5m - 12 = 42 by combining like terms is,

⇒ c = 6

Given that,

A mathematical expression is,

⇒ 7c + 12 = -4c + 78

Now, simplify the expression by combining like terms and solve for m as,

⇒ 7c + 12 = -4c + 78

Combine like terms by adding 4c and subtracting 12 on both sides,

⇒ 7c + 4c = 78 - 12

⇒ 11c = 66

Divide by 11 on both sides,

⇒ c = 66/11

⇒ c = 6

So, the solution is,

⇒ c = 6

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Answer 2
Answer: 7c + 12 = -4c + 78+4c. +4c11c + 12 = 78-12. -1211c = 6611/11. 66/11C = 6Plug in the answer to check .7 * 6 + 12 = 54-4 * 6 + 78 = 5454 = 54

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5(x + 3) +2 (3x+4) I need help on how to work on this

Answers

Distribute 5 to (x+3)
5x+15

Then distribute 2 to (3x+4)
6x+8

You are left with 5x+15+6x+8

Combine like terms

Answer: 11x+23

After a party there were 2 2/3 pepperoni pizzas and 1 5/6 cheese pizza left. How much pizza was there left?

Answers

Answer: 4  (1)/(2)  pizzas

Step-by-step explanation:

    We can add the leftover pizzas together to find the total pizza leftover.

         2 + 1 = 3

         \displaystyle (2)/(3) +(5)/(6) = (4)/(6) +(5)/(6)=(9)/(6) =(3)/(2) =1\;(1)/(2)

         3 + 1 (1)/(2) = 4  (1)/(2)

Answer:

Step-by-step explanation:

I would convert 2 2/3 into something with a denominator of /6 to make it easy

2 4/6 = 16/6

16/6 + 5/6 = 21/6

(simplify)

7/2

or

3.5 pizzas

Tiffany pays $40 for 160 minutes of talk time on her cell phone. How many minutes of talk time does she get per dollar?

Answers

If she pays 40 dollars then you have to divide that into how many minute she gets for that amount so you would have to divide 160 by 40 to get the minutes per dollar.
do 40 dovided by 160 & 160 divided by 40 and see which one makes more sense

Janet used the following steps to solve43 + 3(-5 + 2). Which step has an error written in it?

Step 0: 43 + 3(-5 + 2)

Step 1: 43 + 3(-3)

Step 2: 12 + 3(-3)

Step 3: 12 + (-9)

Step 4: 3

Answers

Answer:

Step 2

Step-by-step explanation:

Janet replaced 43 from 12 out of nowhere, and there is nothing in the problem indicating that 43 should be changed into 12.

Lcm of 120,5200 and 40​

Answers

Ok because what does this even mean

Shana wants to use all 62 feet of the fencing she has to make a rectangular run for her dog. She decides to make the length of the run 20 feet. She writes and solves the equation 2 l plus 2 w equals 62 to find the width of the run.Which statements are true of the solution? Check all that apply.

The value of w is 10 feet.
The value of w can be zero.
The value of w cannot be a negative number.
Substitution is used to replace the variable l with a value of 20.
The subtraction property of equality is used to isolate the term with the variable w.

Answers

Answer:

The value of w cannot be a negative number.

Substitution is used to replace the variable l with a value of 20.

The subtraction property of equality is used to isolate the term with the variable w.

Step-by-step explanation:

Answer:

C,D,E

Step-by-step explanation:
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