32 divided by a number c

What is 69,000 rounded to the nearest hundred

Yuliya22 [10]

The answer would still be 69,000

Hope this Helps

4 0

3 years ago

It has been hypothesized that the standard deviation of the germination time of radish seeds is 8 days. The standard deviation o

Yanka [14]

Answer:

$\chi^2 =\frac{60-1}{64} 36 =33.19$

The degrees of freedom are:

$df= n-1= 60-1= 59$

And the p value would be given by:

$p_v =2*P(\chi^2 >33.19)=0.0053$

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true deviation is different from 8 days.

Step-by-step explanation:

Data given

$n=60$ represent the sample size

$\alpha=0.01$ represent the confidence level

$s^2 =6^2 =36$ represent the sample variance obtained

$\sigma^2_0 =8^=64$ represent the value that we want to test

Hypothesis to test

We want to verify if the true deviation is equal to 8 days o not, so the system of hypothesis would be:

Null Hypothesis: $\sigma^2 = 64$

Alternative hypothesis: $\sigma^2 \neq 64$

The statistic is given by:

$\chi^2 =\frac{n-1}{\sigma^2_0} s^2$

Replacing we got:

$\chi^2 =\frac{60-1}{64} 36 =33.19$

The degrees of freedom are:

$df= n-1= 60-1= 59$

And the p value would be given by:

$p_v =2*P(\chi^2 >33.19)=0.0053$

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true deviation is different from 8 days.

6 0

3 years ago

-1/2+ 7/8- 1/10 Hint: rational numbers

ki77a [65]

After solving $-\frac{1}{2}+\frac{7}{8}-\frac{1}{10}\\$ we get $\frac{11}{40}$

Step-by-step explanation:

We need to solve the following expression:

$-\frac{1}{2}+\frac{7}{8}-\frac{1}{10}\\$

Solving the above expression we need to find the LCM of denominators: 2,8,10

The LCM of 2,8,10 is 40

$-\frac{1}{2}+\frac{7}{8}-\frac{1}{10}\\=\frac{-1*20+7*5-1*4}{40}\\=\frac{-20+35-4}{40}\\=\frac{11}{40}$

So, after solving $-\frac{1}{2}+\frac{7}{8}-\frac{1}{10}\\$ we get $\frac{11}{40}$

Keywords: Rational Numbers

Learn more about Rational Numbers at:

#learnwithBrainly

3 0

3 years ago

A line has a slope of 1 and passes through the point (10, 13). What is its equation in slope-intercept form?

icang [17]

y-y1=m(x-x1)

y-13=1(x-10)

y-13=x-10

y=x-10+13

y=x+3

Hope this helps!

~Just a joyful teen

#HaveAnAmazingDay

$GraceRosalia :)$

6 0

3 years ago

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The slope of the line is..? A. -2 B. -1 C. 1 D. 2

Nezavi [6.7K]

Answer:

B, -1

Step-by-step explanation:

on a graph with 2 points (or more) listed, you can count the points from each coordinate to determine slope (which is rise/run also known as y/x)

going from left to right, we start at (1,4) and count down from (1,4) to (3,2), we go down 2 units

going from left toright again, we start from (1,2) (our point we counted down to from (1,4) and count to the left 2 units

we are now at (3,2)

it took us 2 points down (negative) and 2 to the right (positive) to get from (1,4) to (3,2)

using rise/run we have the following:

-2/2 < we can simplify this further by dividing -2 by 2 and getting 1

the answer is B, -1

ANOTHER WAY

another way we can calculate the slope is by the following formula

y2 - y1/ x2- x1

(1,4) is our x1 and y1, while (3,2) is our x2, y2. we plug this into the formula and we get:

y2 - y1 = 2 - 4 = -2

x2 - x1 = 3 - 1 = 2

-2 / 2 = -1

we still have the same answer, and this formula is useful when you dont have a graph to count down from

4 0

4 years ago

Read 2 more answers