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damaskus [11]
3 years ago
8

What is -5 5/8+3 1/2 A. -3 1/8 b. -2 1/2 c. -2 1/8 d. -7/8

Mathematics
1 answer:
pshichka [43]3 years ago
6 0

Answer:

a is the answer.

Step-by-step explanation:

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If all possible samples of size n are drawn from an infinite population with a mean of 20 and a standard deviation of 5, then th
Ugo [173]

Answer:

25

Step-by-step explanation:

We know that the standard error of the sampling distribution of sample means is

Standard error=standard deviation/√n

√n=standard deviation/Standard error

n=(standard deviation/Standard error)²

We are given that standard deviation=5 and standard error=1. So,

n=(5/1)²

n=5²

n=25.

Thus, the required sample size is 25.

3 0
3 years ago
Choose the problem modeled by the picture.
tekilochka [14]

Answer:

  B) 1/4 × 3/6 = 3/24

Step-by-step explanation:

1/4 of the rectangles are colored blue(ish).

3/6 of the rectangles are colored yellow(ish).

The colors overlap in 3/24 of the rectangles.

The problem statement with these numbers in it is that of choice B.

3 0
3 years ago
Hey guys can u pls help me.​
nadya68 [22]

Answer:

It's b

it's kinda hard to explain but it ends up showing .7x.5 on the example, so your answer is B

4 0
2 years ago
Read 2 more answers
A farmer sells 6.3 kg of apples and pears at the farmers .2/5 of this weight is apples and the rest is pears. How many kg of pea
Studentka2010 [4]

Answer:

4.8/5

Step-by-step explanation:

8 0
3 years ago
Is y= -9/5x + 1/5 perpendicular to y= 5/9x + 2/9
Lana71 [14]

The given lines are perpendicular to each other.

Further explanation:

Given lines are:

Line 1: y= -9/5x + 1/5

Line 2:  y= 5/9x + 2/9

As the lines are in slope=intercept form, the co-efficient of x are their slopes

Let m1 be the slope of line 1 and m2 be the slope of line 2

Then

m_1=-\frac{9}{5}\\m_2=\frac{5}{9}\\m_1.m_2=-\frac{9}{5}*\frac{5}{9}\\m_1.m_2=-1

As we can see that the product of slopes of both lines is -1. The product of slopes of perpendicular lines is -1.

The given lines are perpendicular to each other.

Keywords: Slope, slope-intercept form

Learn more about equation of lines at:

  • brainly.com/question/4703807
  • brainly.com/question/4710621

#LearnwithBrainly

7 0
2 years ago
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