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sineoko [7]
3 years ago
13

Simplify the the problem 2x^2-4x-390=0 ​

Mathematics
1 answer:
Sergio039 [100]3 years ago
7 0

Answer:

The answer is <em>-195</em>

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How do you write 3.25 in simplest form
dedylja [7]
3.25 would be 3 1/4 because,

Step 1: You would rewrite the decimal number as a fraction with 1 in the denominator. So, 3.25 = 3.24/1

Step 2: Multiply it by 1 to eliminate 2 decimals places, so multiply the top and bottom by 10^2 = 100
3.25/1 x 100/100 = 325/100
Step 3: Now you find the greatest common factor, also known as GCF, of 325 and 100 if it exits then you reduce the fraction by dividing both numerator and denominator by it. GCF = 25
3.25/100 divided by 25/25 = 13/4
Now you would simplify it to make a proper fraction getting your answer
3 1/4
Does that make sense?
7 0
3 years ago
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Value of 3x^2 +4y^2 if x=2, y=1, and z= -3
Dennis_Churaev [7]

3x^2+4y^2\\\\\text{Put the values of x=2, y=1 and z=-3 to the expression:}\\\\3(2^2)+4(1^2)=3(4)+4(1)=12+4=16

4 0
3 years ago
Question 27 <br> twice a number x added to another number y gives 35 <br><br> how ??
kenny6666 [7]

Answer:

y+2x=35

so how to get that answer if you divided 35/2= 17.5  so 17 *2= 34 +y= 35

y =1

round it down one number so y can equal 1 then you get 35

5 0
2 years ago
A 100 inch strip of sheet metal starting out 16 inches wide is to be made into a small open trough (open top and ends) by turnin
daser333 [38]

Answer:

4 inches should be turned up on both sides.

Step-by-step explanation:

In order to find this, create a situation in which we give the amount turned up on each side as x. Then give the amount that isn't turned up as 16 - 2x (since 2x is the amount turned up). Now we can find the area by multiplying the 3 measurements.

100 * x * (16 - 2x) = MAX

100 * (16x - 2x^2) = MAX

-200x^2 + 1600x = MAX

Now that we have a quadratic function, we can find the maximum value of x by using the vertex formula for x values (-b/2a).

x = -b/2a

x = -1600/2(-200)

x = -1600/-400

x = 4

8 0
3 years ago
HELP PLEASE WIll GIVE A GOOD VOTE
Luba_88 [7]

Answer:

d) √2/2

Step-by-step explanation:

cos∠E= 5/5√2= 1/√2=√2/2

Correct option is d)√2/2

3 0
3 years ago
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