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
Fantom [35]
2 years ago
8

a student says that if 5x^2 = 20, then x must be equal to 2. do u agre or disagree with the student? justify your answer.​

Mathematics
1 answer:
inna [77]2 years ago
7 0

Answer:

The student is correct.

Step-by-step explanation:

Given that 5x² = 20:

It is true that the value of x = 2 because 2² = 4, and when you multiply 4 with 5, you'll get a product of 20:

5x² = 20

5(2)² = 20

5(4) = 20

20 = 20

Therefore, the student is correct that x = 2.

You might be interested in
A cereal box says that now it contains 20% more. Originally, it came with 20 ounces of cereal. How much cereal does the box come
Novosadov [1.4K]

Answer:24ounces

Step-by-step explanation:

Multiply 20 ounces by .20 (The percent) then add your answer to the 20 ounces.

6 0
3 years ago
In the following figure, triangle ABC and triangle DEF are similar. What is the value of x ? Triangle ABC and triangle DEF are s
Shtirlitz [24]
X = 25.5 mm.

Using the similarity statement given, that ΔABC ~ ΔDEF, we set up a proportion:

8.5/x = 4/12

Cross multiply:
4*x = 8.5*12
4x = 102

Divide both sides by 4:
4x/4 = 102/4
x = 25.5
7 0
3 years ago
The total number of students in the seventh grade is 9 more than 4 times as many students as are in the art class. If there are
mariarad [96]

Answer:

I think there are 23 students in the art class.

Step-by-step explanation:

You first subtract 9 from 101. Then, you divide by four to get 23.

4 0
3 years ago
6 more than twice a number is greater than negative sixteen
Alexxandr [17]

Writing the problem as an equation you have:

2x+6 > -16

Solve for x:


2x+6 > -16

Subtract 6 from each side:

2x > -22

Divide both sides by 2:

x > -11


The answer is: x > -11


3 0
3 years ago
bone-shaped treats are five for 3:50 at Shelly store in Sarah wants to buy 12 she set up and solve this proportion to find how m
Valentin [98]

Answer:

8.4 dollars

Step-by-step explanation:

The error is in the resolution of the proportion. In fact, the initial proportion is correct:

\frac{5}{3.5}=\frac{12}{x}

where x is the total cost. However, the following step of the resolution is wrong. In fact, the correct resolution is the following:

- Multiplying by x on both sides:

\frac{5x}{3.5}=12

- Multiplying by 3.5 no both sides:

5 x = 12 \cdot 3.5 \\5x = 42

And now we can find x:

x=\frac{42}{5}=8.4

So, the total cost is 8.4 dollars.

3 0
4 years ago
Read 2 more answers
Other questions:
  • Does y=x^5 represent y as a function of x?
    8·1 answer
  • When Amber does her math homework, she finishes 10 problems every 7 minutes. How long will it take for her to complete 35 proble
    9·2 answers
  • A movie complex is showing the same movie and three theaters in theater and a 60 of the 80 seats are taken and theater B 42 seat
    8·2 answers
  • Solve for variable: 5z/8 – 1/3 = 2/5
    7·1 answer
  • Please help me (picture)
    5·1 answer
  • Given the vectors w = <-5, 3> and z = <1, 4>, find the results of the vector subtractions. -w − z =
    10·1 answer
  • Will give brainliest
    9·1 answer
  • Which of these changes in a pond environment is observable
    6·1 answer
  • Luke's pencil case measure 1.5 inches by 4 inches by 6 inches. How many pencils can he fit in his pencil case if each pencil has
    7·2 answers
  • Jamarie owns a tomato farm. Each season, she collects about 3,500 tomatoes. This can vary by as many as 425. What is the maximum
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!