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2 years ago

If using the method of completing the square to solve the quadratic equation

Mathematics

1 answer:

SashulF [63]2 years ago

8 0

Answer:

(5/2) ² or 25 /4

Step-by-step explanation:

x² - 5x - 18 = 0

x² -5x = 18

x² -5x + (5/2)²= 18 + (5/2)²

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For every $20 that Danika saves, her grandmother gives her $30. If Danika saves $150, how much money will her grandmother give h

Colt1911 [192]

The answer is 225 dollars because you divide 150/20=7.5 then multiply 7.5(30) and you get 225

7 0

2 years ago

Read 2 more answers

-3x=6x + 2 solve for x

AnnyKZ [126]

Answer:

Step-by-step explanation:

6x+3x= -2

9x= -2

x= -2/9

8 0

2 years ago

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For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of

makkiz [27]

95% have a systolic blood pressure between 109 and 141

Empirical rule states that for a normal distribution, 68% are within one standard deviation from the mean, 95% are within two standard deviation from the mean and 99.7% are within three standard deviation from the mean.

Given that mean (μ) = 125, standard deviation (σ) = 8.

68% are within one standard deviation = μ ± σ = 125 ± 8 = (117, 133)

95% are within two standard deviation = μ ± 2σ = 125 ± 2*8 = (109, 141)

95% have a systolic blood pressure between 109 and 141

Find out more on empirical rule at: brainly.com/question/10093236

5 0

2 years ago

Which values of a and b make the following equation true?<br> (5x7y²)(-4x¹y5) --20xyb

Marizza181 [45]

Answer:

this will be your answer

4 0

1 year ago

Prior to hosting an international soccer match, the local soccer club needs to replace the artificial turf on their field with g

r-ruslan [8.4K]

Answer:

$44,313.75

Step-by-step explanation:

First, we need to turn the km into meters. There are 1000 meters in a km meaning we need to multiply each of these values by 1000.

0.101 km * 1000= 101 meters

0.065 km * 1000 = 65 meters

Now we need to multiply these values together to find the area of the field

101m * 65m = 6,565 $m^{2}$

Finally, we need to multiply this area by the cost per square meter

6,565 $m^{2}$ / 6.75 = $44,313.75

The total repair will cost $44,313.75

3 0

2 years ago