Can someone help me. im extremely bad at math

Which of the following is a solution of x2 + 4x = −8?

Vladimir [108]

$x^{2}+4x = -8
\\\\
x^{2}+4x+8 = 0
\\\\
\Delta = b^{2}-4ac
\\\\
\Delta = (4)^{2}-4 \cdot (1) \cdot (8)
\\\\
\Delta = 16-32
\\\\
\Delta = -16$

There's no solution in the set of real numbers.

$\boxed{S = \{ \ \ \}}$

6 0

2 years ago

What is the equation for the line in slope-intercept form? Enter your answer in the box.

Maslowich

Answer:

im sorry i dont know but this is for a challenge sorry

Step-by-step explanation:

6 0

1 year ago

Read 2 more answers

Based on the Nielsen ratings, the local CBS affiliate claims its 11:00 PM newscast reaches 41% of the viewing audience in the ar

Studentka2010 [4]

Answer:

Alternative Hypothesis:H₁: μ ≠ 0.41

Step-by-step explanation:

Step(i):-

Given that the newscast reaches 41% of the viewing audience in the area

The mean of the Population = 0.41

Given that In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station

Given that the mean of the sample = 0.36

Step(ii):-

Null hypothesis: The sample statistic does not differ significantly from the hypothetical parameter value.

Given data

Null hypothesis: H₀ : μ = 0.41

Alternative Hypothesis: Any hypothesis which is complementary to the Null hypothesis

Alternative Hypothesis:H₁: μ ≠ 0.41

7 0

2 years ago

The number of hours in a day is measured in the tens A. True B. False

Svetradugi [14.3K]

Answer:

flase

Step-by-step explanation:

The hours do not get measured in tens.

7 0

3 years ago

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A standard deck of cards contains 52 cards. One card is selected from the deck. (a) Compute the probability of randomly selecti

den301095 [7]

Answer:

a) 0.5

b) 0.75

c) 0.307

Step-by-step explanation:

We are given the following information in the question:

Number of cards in a deck = 52

Formula:

$\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}$

a) P(Heart or Diamond)

Total number of hearts and diamonds in a deck = 13 + 13 = 26

P( Heart or Diamond) =

$\displaystyle\frac{26}{52} = \displaystyle\frac{1}{2} = 0.5$

b) P(Heart or Diamond or Spade)

Total number of hearts, diamonds and spades in a deck = 13 + 13 + 13 = 39

P( Heart or Diamond or Spades) =

$\displaystyle\frac{39}{52} = \displaystyle\frac{3}{4} = 0.75$

c) P(10 or Spades)

Total number of spades in a deck = 13

Number of 10 in a deck = 4

P( 10 or Spades) =

$\displaystyle\frac{13 + 4 -1}{52} = \displaystyle\frac{16}{52} = \displaystyle\frac{4}{13} = 0.307$

3 0

2 years ago