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VikaD [51]
3 years ago
9

Alejandro solved the equation 5(7x^2-2)-8=3. He wrote 5(7x^2-2)=11 as his first step. Which property justifies his first step?

Mathematics
2 answers:
zheka24 [161]3 years ago
8 0

His first step justifies The Addition Property of Equality. Hope this helps.

Scorpion4ik [409]3 years ago
3 0
The addition property of equality. It says that if you add the same number to each side of the equation, the two sides of the equation will be equal. In this case, the number 8 was added to each side.

Hope this helps :)
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I am greater than 30 and less than 40. The sum of my digits is less than 5
Zielflug [23.3K]
The answer will be 31.
5 0
3 years ago
Read 2 more answers
Need help with math problem if do get 5 star
777dan777 [17]

Answer:

d) 63 square units

Step-by-step explanation:

x = 3 units (base - b)

y = 6 units (width - w)

h = 7 units (length and height - l and h)

  • Area of a rectangle: l*w
  • Area of a triangle: 1/2*b*h

For the triangles:

Area of a triangle: 1/2*b*h

A = 1/2 * 3 * 7

A = 1/2 * 21

A = 10.5

*Since there are two triangles, it would be 10.5 * 2 = 21

For the rectangle:

Area of a rectangle: l*w

A = 7 * 6

A = 42

Now, we add them together:

A = 42 + 21

A = 63 square units

Therefore, the area of the parallelogram is 63 square units

Hope this helps!

6 0
2 years ago
How do you solve these problems without numbers
insens350 [35]

i dont know if you want me to answer them or not, but you have to COMBINE LIKE TERMS if you dont then your problems would be messed up example if you have a+a it would be 2a make sense? so you want everything combined then you have to solve. theres no possible way of solving these without numbers number would have to be added although youll probably end up getting rid of the numbers in the end. after you combine like terms do the rest of solving


hope that helps if you need more help pm me, :)

7 0
3 years ago
Plzzzz help !!!! I need this done
STatiana [176]

Answer:

A) x + 2 ≤ 3

Step-by-step explanation:

To solve for this, you subtract 2 from both sides leaving you with:

x ≤ 1

which is what the graph is showing.

3 0
3 years ago
What do you divide -81 to get +81?
Sliva [168]
Divide it by -1 to get positive 81
6 0
3 years ago
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