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KiRa [710]
3 years ago
5

What value of x makes the equation 66x = 6 true

Mathematics
2 answers:
podryga [215]3 years ago
5 0

Step-by-step explanation:

6x² +66x +180= =6(x²+11x+30

but that's if its the parabola has indeed two real solutions

KatRina [158]3 years ago
3 0

Answer:

66 x 1/11 = 6

or

66 x 0.09 = 6

So x = either 1/11 or 0.09

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A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. T
Oksanka [162]

Answer:

The null and alternative hypotheses are:

H_{0}:\mu=75

H_{a} : \mu>75

Under the null hypothesis, the test statistic is:

t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt{n}} }

Where:

\bar{x} =83 is the sample mean

s=9.8206 is the sample standard deviation

n=10 is the sample size

\therefore t= \frac{83-75}{\frac{9.8206}{\sqrt{10}} }

         =2.58

Now, we can find the right tailed t critical value at 0.01 significance level for df = n-1 = 10 - 1 = 9 using the t distribution table. The t critical value is given below:

t_{critical} =2.821

Since the test statistic is less than the t critical value, we therefore, fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the people do better with the new edition.

7 0
3 years ago
The check-cashing store also makes one-month add-on interest loans at 7.8 percent discount interest per week. Thus if you borrow
masya89 [10]

Answer:

APR = 416%

EAR = 5370.60%

Step-by-step explanation:

Given:

Interest rate = 7.8% per week

Now,

In an year there are total 52 weeks

thus,

The APR (Annual percentage rate) = Interest rate × Total weeks in an year

or

APR = 8% × 52

or

APR = 416%

and, EAR ( Effective Annual Rate ) = ( 1 + r )ⁿ - 1

Here,

r is the interest rate per week

n is the total weeks in an year

thus,

EAR ( Effective Annual Rate ) = ( 1 + 8% )⁵² - 1

= ( 1 + 0.08 )⁵² - 1

= 53.7060

or

53.7060 × 100% = 5370.60%

5 0
3 years ago
How do you do 4(x-3) you have to use distributive property to remove the parentheses..
Oksana_A [137]

Answer:

 4x -12

Step-by-step explanation:

Your question answers itself: you use the distributive property to remove the parentheses.

  4(x -3) = 4(x) +4(-3) = 4x -12

5 0
3 years ago
Brianna received pledge amounts of $89, $35, $22, $36,
Alex17521 [72]

Answer:mean

Step-by-step explanation: I am also not sure because I been looking for the anwser to this but I think it’s mean

5 0
3 years ago
2. What is an expression for the distance between the origin and a point P(x, y)?
Hunter-Best [27]

Step-by-step explanation:

Using distance formula: { origin is (0,0)}

√(x - 0)² + (y - 0)²

√x² + y²

6 0
3 years ago
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