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3 years ago

5 and 2/5 + 2 and 3/5

1 answer:

8 0

Hello there!

Lets add:

1. 5 + 2 = 7

2. 2/5 + 3/5 = 1

3. 7 + 1 = 8

You're answer is going to be - 8

Hope this helps you!

~Galexie

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Mr. Anderson wrote (7x9) 103 on the board. What is the value of that expression

RUDIKE [14]

Answer:

6,489

Step-by-step explanation:

first you would multiply 7 and 9, which would be 63

7 x 9 = 63

then you would multiply 63 by 103 since they are being multiplied

63 x 103 = 6,489

8 0

3 years ago

A Simple random sample of 100 8th graders at a large suburban middle school indicated that 84% of them are involved with some ty

Setler [38]

Answer: a) (0.755, 0.925)

Step-by-step explanation:

Let p be the population proportion of 8th graders are involved with some type of after school activity.

As per given , we have

n= 100

sample proportion: $\hat{p}=0.84$

Significance level : $\alpha= 1-0.98=0.02$

Critical z-value : $z_{\alpha/2}=2.33$ (using z-value table)

Then, the 98% confidence interval that estimates the proportion of them that are involved in an after school activity will be :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

i.e. $0.84\pm (2.33)\sqrt{\dfrac{0.84(1-0.84)}{100}}$

i.e. $\approx0.84\pm 0.085$

i.e. $(0.84- 0.085,\ 0.84+ 0.085)=(0.755,\ 0.925)$

Hence, the 98% confidence interval that estimates the proportion of them that are involved in an after school activity : a) (0.755, 0.925)

3 0

4 years ago

How would you draw this using a diagram?

ki77a [65]

Where is the diagram?

7 0

3 years ago

If (x+2),3x and (4x+1)are in AP find the value of x

Gala2k [10]

Answer:

x is 3

Step-by-step explanation:

${ \bf{U _{2} - U _{1} = U _{3} -U _{2} }}$

${ \tt{3x - (x + 2) = (4x + 1) - 3x}} \\ { \tt{2x - 2 = x + 1}} \\ { \tt{x = 3}}$

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3 years ago

Megan wants to change her Internet Service Provider.

Lera25 [3.4K]

Good for Megan............

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3 years ago