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Burka [1]
3 years ago
8

Which choice correctly shows the solution(s) of the equation x2 = 400?

Mathematics
1 answer:
Arada [10]3 years ago
5 0

x2=400

x=√400

=20

20^2=400

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The sum of two numbers is 25 one number is five less than the other number find the larger number
prohojiy [21]

*NOT MY WORK ITS FROM SOMEONE ELSE WHO ASKED THE SAME PROBLEM*

Answer: x=15, y= 10

Step-by-step explanation:

Answer: x=15, y=10

*Note: x and y are only variables used to solve this problem, but know that the two numbers are 15 and 10.

Step-by-step explanation:

For this problem, we can use system of equations. Let's use x for one number and y for the other.

First Equation:

x+y=25

We get this equation because it states that the sum of the two numbers is 25.

Second Equation:

y=x-5

We get this equation because it says one number (y) is 5 less than the other (x).

Since we have two equations, we can use substitution method to solve.

                                 [distribute 1 to (x-5)]

                                    [combine like terms]

                                        [add both sides by 5]

                                               [divide both sides by 2]

Now that we have x, we can plug it into any of the equations to find y.

                                         [plug in x=15]

                                        [subtract both sides by 15]

Finally, we have our answer, x=15 and y=10.

4 0
3 years ago
Read 2 more answers
It is greater than 37493 it is less than 37503 it is an even number the value of the mystery number rounded to the nearest ten i
dalvyx [7]
The mystery number is 37502
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A circular cloud of poison gas from a factory explosion is expanding so that t hours after the explosion the radius of the cloud
diamong [38]

Answer:

6000π m²/h

Step-by-step explanation:

Area of the circular cloud =πr²----------------------------------------- (1)

Radius as a function of time = R(t)=50+20t------------------------ (2)

dA/dt = (dA/dr) x (dr/dt)-----------------------------------------------------(3)

dA/dr  =  2πr

dr/dt   = 20

After 5 hours, the radius of the cloud will be :

R(5)=50+20(5)

     =   150 meters

Substituting into (3)

dA/dt =   2π(150)  x 20

         =   6000π m²/h

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A giraffes hunger level depends on the size of its last meal. What is the independent and dependent variable
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The independent will be the the size of the meal and the dependent will be the hunger level.
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If it is a geometric sequence, then ur answer would be d. 
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