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sergey [27]
2 years ago
11

This is quadratic equations Help asap!!

Mathematics
1 answer:
lord [1]2 years ago
3 0

Answer:

x = - 3 ± \sqrt{2}

Step-by-step explanation:

x² + 6x + 7 = 0 ( subtract 7 from both sides )

x² + 6x = - 7

using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(3)x + 9 = - 7 + 9

(x + 3)² = 2 ( take square root of both sides )

x + 3 = ± \sqrt{2} ( subtract 3 from both sides )

x = - 3 ± \sqrt{2}

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Which statement is true regarding the diagram of circle P?
masya89 [10]

Answer:

The difference of z and y must be 2x

Step-by-step explanation:

6 0
3 years ago
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Factor 8c + 10c?.<br> ✅p
Rashid [163]

Answer: 18 c

Step-by-step explanation: since they have the same variables you can easily just add them together

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4 years ago
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⚠️please help done today⚠️
Yuri [45]

Answer:

It would be the first answer choice, 18+54

Step-by-step explanation:

6(3+9

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5 0
3 years ago
Farmers often sell fruits and vegetables at farmers’ markets during the summer. Each tomato stand at the Bentonville farmers’ ma
olga nikolaevna [1]

Answer:

the probability that all tomatoes are sold is  0.919 (91.9%)

Step-by-step explanation:

since the random variable X= number of tomatoes that are demanded,  is normally distributed we can make the standard random variable Z such that:

Z=(X-μ)/σ = (83 - 125)/30 = -1.4

where μ= expected value of X= mean of X (since X is normally distributed)  , σ=standard deviation of X

then all tomatoes are sold if the demand surpasses 83 tomatos , therefore

P(X>83) = P(Z>-1.4) = 1- P(Z≤-1.4)

from tables of standard normal distribution →P(Z≤-1.4)=0.081 , therefore

P(X>83) = 1- P(Z≤-1.4)  = 1 - 0.081 = 0.919 (91.9%)

thus the probability that all tomatoes are sold is  0.919 (91.9%)

6 0
3 years ago
HELPPP ME ASAPP !!!!
Mrac [35]

Answer:

60 degrees

Step-by-step explanation:

the triangle is an equilateral triangle

sum of angle in a triangle is 180

therefore,

x + x + x = 180

3x = 180

divide both sides by 3

x = 60 degrees

6 0
4 years ago
Read 2 more answers
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