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3 years ago

PLEASE HELP (another question at the bottom)

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

8 0

Boo... boo? Boo! Tell me it’s not what I think it is xd

vfiekz [6]3 years ago

7 0

Answer:

How have u been?

Step-by-step explanation:

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What is the standard form that has a center (1,3) and a radius of 9

klasskru [66]

$\huge\boxed{(x-1)^2+(y-3)^2=9^2}$

Start with the standard form of a circle, where $(h,k)$ is the center of the circle and $r$ is the radius.

$(x-h)^2+(y-k)^2=r^2$

Plug in the known values.

$\boxed{(x-1)^2+(y-3)^2=9^2}$

This is the circle's equation in standard form.

4 0

3 years ago

Find the number of real number solutions for the equation.

vampirchik [111]

Answer:

x = ±1

Step-by-step explanation:

x² + 0x -1 = 0

x²- 1 = 0

x² = 1

x = ±1

--------------

check

1² + 0x - 1 = 0

1 - 1 = 0

5 0

2 years ago

A polynomial that has 8 turning points is multiplied by another polynomial that has 7 zeros. What is the minimum degree of the n

Nata [24]

If there are 8 turning points in a polynomial graph, then the degree of the polynomial is n+1 or 9. On the other hand, this also applies to the number of zeros present in the function. If there are 7 zeros, then the degree is 8. Adding both degrees results to the resulting polynomial's degree is 16.

6 0

3 years ago

In the following exercises, multiply the binomials. Use any method. 255. (a + b)(2a + 3b)

Alex_Xolod [135]

Answer:

Hence the expression $(a+b)(2a+3b)=2a^2+5ab+3b^2$

Step-by-step explanation:

Explanation

The given expression is (a + b)(2a+3 b).
We have to multiply the given expression.
Multiply the (a + b) by 3b, multiply the (a + b) by 2a then add like terms.

$\begin{matrix}{} & {} & {} & {} & a & + & b \\ \times & {} & {} & {} & 2a & + & 3b \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & {} & {} & 3ab & + & 3{{b}^2} \\ {} & {} & 2{{a}^2} & + & 2ab & {} & {} \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & 2{{a}^2} & + & 5ab & + & 3{{b}^2} \\ \end{matrix}$

7 0

2 years ago

Washington (CNN) About three-quarters of Americans (77%) approve of President Donald Trump's decision to meet with North Korean

snow_tiger [21]

Answer:

b. The margin of error would decrease.

Step-by-step explanation:

Margin of error of a confidence interval:

The margin of error of a confidence interval has the following format:

$M = z\frac{\sigma}{\sqrt{n}}$

In which z is related to the confidence level, $\sigma$ is the standard deviation of the population and n is the size of the sample.

This means that the margin of error is inversely proportional to the size of the sample, which means that if the sample size increases, the margin of error decreases.

In this question, the sample size is increased, leading to a smaller margin of error. So the correct answer is given by option b.

8 0

3 years ago