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3 years ago

A(7x+3)=b+14x what is the value of a and b

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

3 0

Answer:

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The roots of x^2-6x-16=0 <br> {-16,6}

LenaWriter [7]

Answer:

-2 and 8 is the answer.

6 0

3 years ago

On Monday Katie spent 2 1/6 hours studying. On Tuesday she spent another 4 7/9 hours studying. What is the combined length of ti

iren [92.7K]

Answer:6 17/18 hours

Step-by-step explanation:

We are informed that on Monday Katie spent 2 1/6 hours studying while onn Tuesday she spent another 4 7/9 hours studying.

The combined length of time she spent studying will be the addition of the numbers of hours spent studying on Monday and Tuesday. This will be:

= 2 1/6 + 4 7/9

= 2 3/18 + 4 14/18

= 6 17/18

She used a total of 6 17/18 hours studying

8 0

3 years ago

Find the given term 11, -33,99 9th term

kvv77 [185]

Assuming the sequence goes on like this 11,-33,99,-297,891,...,
its general formula is $a_n=-11\cdot(-1)^n\cdot3^{n-1}$

So, the 9th term is
$a_9=-11\cdot(-1)^9\cdot3^{9-1}=-11\cdot(-1)\cdot6561=72171$

5 0

3 years ago

What is 2/3 ^4 as a fraction simplified? pls, I need it fast.

Katyanochek1 [597]

Answer: 16/81

Step-by-step explanation:

2/3 × 2/3 × 2/3 × 2/3

= 16/81

3 0

3 years ago

In 2011, The New York Yankees won 97 out of 162 of their baseball games. Is there sufficient evidence that the proportion of win

Cloud [144]

Answer: It is sufficient evidence that it will reject the null hypothesis.

Step-by-step explanation:

Since we have given that

Number of players of baseball games = 162

Number of games won = 97

So, $\hat{p}=\dfrac{97}{162}=0.5988$

Hypothesis:

$H_0:p\leq 0.5\\\\H_a:p>0.5$

So, test statistic would be

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.5988-0.5}{\sqrt\dfrac{0.5\times 0.5}{162}}}\\\\z=2.514$

And the p-value = 0.006 at z=2.514.

Since p-value < α = 0.10 significance level.

Hence, it is sufficient evidence that it will reject the null hypothesis.

7 0

3 years ago