1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VikaD [51]
4 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]4 years ago
8 0

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

Scorpion4ik [409]4 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 :)
You might be interested in
What is the rate of decay for the function f(x) =2(0.95)^x ( x is on top of the parentheses)
SIZIF [17.4K]

Answer:

The decay rate is 5%.

Step-by-step explanation:

Let a substance is decaying at the rate of r% per hour from the initial value of P for t hours, then the final value of the substance is given by the function  

f(t) = P(1 - \frac{r}{100})^{t} ........... (1)

Comparing this equation with the original equation given as

f(x) = 2(0.95)^{x} ............ (2) we get,

(1 - \frac{r}{100}) = 0.95

⇒ \frac{r}{100} = 0.05

⇒ r = 5%.

Therefore, the decay rate is 5%. (Answer)

7 0
3 years ago
Anyone please, thanks
Mashcka [7]

Step-by-step explanation:

(2y - 3) = 45 \\ 2y = 48 \\ y = 24

5 0
3 years ago
Read 2 more answers
Someone help me with this one​
frosja888 [35]

Answer:

2/3

Step-by-step explanation:

20% = 12

48

1/6 = 8

left = 40

40/60 = 4/6

4/6 = 2/3

3 0
4 years ago
Read 2 more answers
Adam bought a new flat screen tv with an area of 21 ft the screen is 3 feet wide how tall is it​
Tema [17]

Answer:

7 ft bRo

Step-by-step explanation:

wow i took 21 and divided it by three and i got SEVEN

how old are you like four

5 0
3 years ago
Find the area of the circle with the given diameter.<br> d = 28 inches
alexdok [17]

Answer: 196pi in.^2

Step-by-step explanation:

Divide the diameter by two.

You would get 14, then square it, you would get 196.

4 0
3 years ago
Other questions:
  • a.Karim is ordering video games. Each game costs $39.99, and there is a $4.85 shipping charge per order. How much will it cost h
    8·2 answers
  • PLEASE HELP!
    12·1 answer
  • What is the slope of this line?<br> A) 3<br> B) -3<br> C) 1/3<br> D) -1/3
    12·2 answers
  • John had $20. He earned $5, spent $10, earned $5 again, and then spent $3. After this series of earnings and expenses, how much
    9·2 answers
  • Find the value of x in The parallelogram.
    15·2 answers
  • What is the value of the missing angle (x+15)
    6·1 answer
  • What value of x makes this equation true 10x-6=3(x+½)​
    12·1 answer
  • A local hamburger shop sold a combined total of 575 hamburgers and cheeseburgers on Saturday. There were 75 fewer cheeseburgers
    11·1 answer
  • A tree is 14 meters tall. What is its height in feet? Use the following conversion: 1 meter is 3.3 feet
    8·1 answer
  • The height of a house is 52 ft. A tree beside the house is 7.5 ft more than twice as tall. What is the height, in feet, of the t
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!