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Maksim231197 [3]
4 years ago
12

SOLVING QUADRATIC EQUATIONS BY SQUARE ROOT 4m^2-1=-23

Mathematics
2 answers:
liraira [26]4 years ago
7 0
4m^2 -1 = -23 Add 1 to both sides 4m^2 = -22 then divide both sides by 4. m^2 = -11/2. Square root both sides. m = ((square root of 22)/2) times i
PtichkaEL [24]4 years ago
6 0
<span>4m^2-1=-23
</span>⇒ 4m^2= -23+1
⇒ 4m^2= -22
⇒ m^2= -22/4
⇒ m^2= -11/2
⇒ m is undefined for all m∈R (for m^2 is always ≥0 for all m∈R)
<span>
Final answer: </span>m is undefined for all m∈R~
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Solve the equation for x: 2x + 22 = 4(x+3)
Elina [12.6K]
2x + 22 = 4(x + 3)...distribute thru the parenthesis
2x + 22 = 4x + 12...subtract 2x from both sides, subtract 12 from both sides
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8 0
4 years ago
Given: KLMN is a trapezoid m∠K = 90°, m∠N = 45° LK = LM = 10 Find: KN, Area of KLMN
Ilya [14]
Let KLMN be a trapezoid (see added picture). From the point M put down the trapezoid height MP, then quadrilateral KLMP is square and KP=MP=10.
A triangle MPN is right and <span>isosceles, because
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The ttapezoid side KN consists of two parts KP and PN, each of them is equal to 10, then KN=20 units.
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5 0
3 years ago
The inhabitants of the island of jumble use the standard kobish alphabet ($20$ letters, a through t). each word in their languag
rjkz [21]
We know that

<span>1. The number of all 4-letter words written using the alphabet of 20 symbols (from A to T) is 
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</span><span>
 2. The number of all 4-letter words written using the alphabet of 19 symbols (from B to T) is 
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</span><span>
 3. The difference represents exactly the number of all words of the inhabitants of the island of Jumble
difference=</span>(160,000-130,321)= 29679.

the answer is
29679
7 0
3 years ago
How in the world do I answer this problem??​
galben [10]

Answer:

22

Step-by-step explanation:

ST is y and SU is 2y-4.

Note that SU = ST + TU = y + 18

So we have 2y - 4 = y + 18

2y - 4 = y + 18

2y      = y + 22

y        = 22

So ST is 22.

:)

4 0
3 years ago
Help fast please !!!!!
Butoxors [25]

Answer:

Step-by-step explanation: reduce mean divide so 400 divided by 4 =28

8 0
3 years ago
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