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3 years ago

To have a batting averages over .500,how many hits in 45 times at bat would Rail and Karen need?

1 answer:

5 0

A batting average is simply the ratio of hits/at-bats. So if Karen were up to bat 1,000 times and she got a hit 444 times, that makes her batting average 444/1,000=.444 or another way to solve this problem is to multiply 0.500(0.5)to 45 and you would get 22.5. Hope I helped!

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There are two conditions under which we can assume that the sample means follow a normal distribution. What are they

Naddik [55]

Two conditions under which we can assume that the sample means follow a normal distribution are as follows:

1). If the sample size is large enough, n greater than or equals 30, the sampling distribution is approximately normal regardless of the shape of the population.

2). In order to be considered a normal distribution, a data set (when graphed) must follow a bell-shaped symmetrical curve centered around the mean.

To learn more about Normal Distributions visit:

brainly.com/question/4079902

#SPJ4

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2 years ago

Based on the net shown below, what is the surface area of the pyramid to the nearest square inch. please show work

-BARSIC- [3]

Pyramid Surface Area = (½ * Perimeter of Base * Slant Height) + Base Area

Perimeter of Base = 6 * 4 = 24
Base Area = 6 * 6 = 36

Pyramid Surface Area = (½ * Perimeter of Base * Slant Height) + Base Area
Pyramid Surface Area = (½ * 24 * 6) + 36
Pyramid Surface Area = 72 + 36
Pyramid Surface Area = 108 square inches

3 0

3 years ago

8x+5y=24 y=-4x Solve for y and x

Cloud [144]

Answer:

x= -2 and y= 8

Step-by-step explanation:

8x+5y=24-------A

y=-4x---------B

Putting the value of y from B in A

8x+5(-4x)=24

8x +(-20x)= 24

8x-20x=24

-12x=24

x= -24/12

x=-2--------C y =-4(-2)=8

8 0

3 years ago

(6+3)4 I don't understand what it means I really need some help

Over [174]

Answer:

Step-by-step explanation:

Hullo :D

If you're having trouble understanding, you might not understand the Order of Operations.

P - Parenthesis. Solve what's inside the Parenthesis first

E - Exponents. Solve for Exponents second.

M - Multiply. Multiply numbers third. (left - to - right with division, too)

D - Divide. Divide fourth. It is interchangeable with multiplication, as well.

A - Addition. Add fifth.

S - Subtract sixth. It is interchangeable with Addition, as well.

With that in mind, all we need to do is identify these types in the equation:

(6+3)4

We see parenthesis. We will solve them first according to the Order of Operations:

6 + 3 = 9.

(9)4

We see multiplication. We solve them next according to the Order of Operations:

9 × 4 = 36.

Thus, the final answer is $\boxed{36}$ .

Hope this helps!

4 0

3 years ago

What is f(-1)=x^2-8x-12

Shtirlitz [24]

Answer:

-3

Step-by-step explanation:

f(x)=x²-8x-12

f(-1)=(-1)²-8(-1)-12

=1+8-12

=-3

7 0

3 years ago

Read 2 more answers