MATHEMATICS MIDDLE SCHOOL

Select all the answers that are true for the equation:4x^2-20=0
The equation has two solutions.
One of the answers is -√20.
One of the answers is √5.

Answers

Answer 1

Answer: One of the answer is 5

Answer 2

Answer:

Answer:

Step-by-step explanation:

Related Questions

What is a even number between 2 and 10
Find the value of x60 150 3x 90
A population of 100 mice increases by 50% how many miles would there be after the population growth?
You randomly choose letter from a with the letters A through J. Without replacing the a choose letter. Find the first letter, you a second probability of the events. 6. Choosing a consonant and then an E or I . Choosing a vowel and then an F. Choosing a vowel and then a consonant. You have 3 clasp bracelets, 4 watches, and 5 stretch bracelets. You randomly choose two from your jewelry box. What is the probability that you will choose 2 watches?
Nick spent 1 3/4 hours doing homework. Of that time, 2/3 was spent on a social studies project. How many hours did Nick spend working on the project?

If xy = 144, x + y = 30, and x > y, what is the value of x – y ?F. 4
G. 6
H. 18
J. 22
K. 24

Answers

$xy=144\nx+y=30\to x=30-y\n\nsubstitute:\n\n(30-y)y=144\n-y^2+30y-144=0\n\n\Delta=30^2-4\cdot(-1)\cdot(-144)=900-576=324;\ \sqrt\Delta=√(324)=18\n\ny_1=(-30-18)/(2\cdot(-1))=(-48)/(-2)=24;\ y_2=(-30+18)/(2\cdot(-1))=(-12)/(-2)=6\n\nx_1=30-24=6;\ x_2=30-6=24\n\nx > y\ to x=24\ and\ y=6\n\nx-y=24-6=18\n\nAnswer:H.$

When counting up by ten, what number comes after 10

Answers

Answer:

10 11

Step-by-step explanation:

Answer:

Step-by-step explanation:

you add ten each time. 10,20,30,40,etc.

What is the value of the function when x = 2? A set of points are plotted on a coordinate grid. The points include point 1, 2... point negative 1, 4... point negative 2, 2... point 3, 4... point 2, 6... point negative 3, 6... and point negative 4, 3.

Answers

when x= 2 the corresponding y value is 6, according to the point 2,6

Answer:

when x= 2 the corresponding y value is 6, according to the point 2,6

Step-by-step explanation:

A boat travels for 4 hours at a constant speed of 30 km/h.How far does the boat travel?

30 km

120 km

160 km

80 km

Answers

Answer:the boat travel of a constant speed of 120km

Step-by-step explanation:

4x30=120

A babysitter charges 25% more than her normal hourly rate on Saturday night. Her normal hourly rate is $12.50.Which expression represents how much the babysitter charges on Saturday night?

A.$12.50*5/4

B.$12.50*7/4

C.$12.50*1/4

D.$12.50*3/4