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lara [203]
3 years ago
10

Justify each step of the equation solved below using mathematical properties.

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
8 0

Answer:

Please check the explanation!

Step-by-step explanation:

1. -3(x+2)+4=94

Apply distributive law a(b+c)=ab+ac and combine like terms for the second and third steps

2. -3x-2=94

3. -3x-2=94

Add 2 to both sides.

4. -3x=96

Divide both sides by -3.

5. X=-32

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Sophie can type 128 words in 3 minutes. How many minutes will it take her to type 576 words?​
Andrej [43]
Let’s first find the rate that she types at in wok.
128/3 = 42+2/3 words per minute.
Now divide 576 by the rate.
576/42.666= 13.5 minutes
7 0
3 years ago
6. Find the perimeter of the figure below
liraira [26]

Answer:

26 in.

Step-by-step explanation:

» <u>Concepts</u>

The perimeter for a shape is the total distance around it measured in units. The formula to find the perimeter of a trapezoid is a + b + c + d, where a & b are the bases, and c & d are the lengths of the other sides.

» <u>Solution</u>

Adding up all the sides, we get:

  • 11+7+4+4
  • 18+4+4
  • 22+4
  • 26

26 inches

3 0
3 years ago
Write the verbal sentence as an equation:
-Dominant- [34]

Answer:

2n-12=7n-15

Step-by-step explanation:

I hope i did it right im sorry if i didnt! in the first sentence it tells you "twelve less than" therefore its telling you that you are going to be subtracting which automatically means that its not going to be the first thing you write down. You then continue reading and it tells you "2 times a number (n)" which is written as 2n because to things side by side like that signifies that you are multiplying. Then you have your equal sign which is self explanatory. and basically you follow the same reasoning as you did the first part and you end up with 7n-15 and the other half of your equation. I hope that helped!

4 0
4 years ago
The sum of two consecutive integers is 85. What are those two<br> integers?
chubhunter [2.5K]

Answer:

41 and 42

Step-by-step explanation:

Let the integers be x and x + 1

=> x + x + 1 = 85

=> 2x + 1 = 85

=> 2x = 84

=> x = 84/2

=> x = 41

Integers are :

41 and 42

7 0
2 years ago
Lisa needs 250 yards of yarn to knit a hat. She has 185 yards of yarn and needs to buy the rest. How many yards of yarn does she
Alecsey [184]

Answer:

it's answer is y + 185 = 250; y = 65

hope it helps you

6 0
3 years ago
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