One year Roger had the lowest ERA (earned-run average, mean number of runs yielded per nine
innings pitched) of any male pitcher at his school, with an ERA of 3.49. Also, Kate had the lowest ERA of any female pitcher at the school with an ERA of 3.44. For the males, the mean ERA was 3.805 and the standard deviation was 0.671. For the females, the mean ERA was 3.967 and the standard
deviation was 0.604. Find their respective z-scores. Which player had the better year relative to their
peers, Roger or Kate? (Note: In general, the lower the ERA, the better the pitcher.)

Answer:

3.70

Step-by-step explanation:

Answer:

It makes comparing magnitudes easier. It is much easier to estimating numbers easier. you can easily say that 0.0000000009 is smaller than 0.0000001 and even say but how much, and it reduces the amount of time you have to read the number, since instead of having 0s, you have the amount of 0s.

She paid 11 dollars total

Step-by-step explanation:

100% of $5 is $10

10% of $10 is $1

10 + 1 = 11

Answer:

[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

The half life is the amount of time it takes a substance to decay to half of its original amount.

Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.

So, the fraction that will be left after 1000 years is [tex]\frac{1}{2}[/tex]

Answer:

1/2

Step-by-step explanation:

so if u do the waffalineneh times by arcimate it would equivently be the answer on top

Answer:

[tex]Difference = \frac{13}{40}[/tex]

Step-by-step explanation:

Given

[tex]Thursday = \frac{3}{8}\ mile[/tex]

[tex]Tuesday = \frac{7}{10}\ mile[/tex]

Required

How much farther is she on Tuesday

To do this, we simply calculate the difference between distance covered on both days.

[tex]Difference = Tuesday-Thursday[/tex]

[tex]Difference = \frac{7}{10} - \frac{3}{8}[/tex]

Take LCM

[tex]Difference = \frac{28- 15}{40}[/tex]

[tex]Difference = \frac{13}{40}[/tex]

Hence, she ran 13/40 mile farther on Tuesday

Answer: its 1/4 per minute i took the test

Step-by-step explanation:

Answer: Dawn's score is 4

Answer: 4

brainlist pls???

Step-by-step explanation:

7-21=14

14-10=4

Answer:

[tex]B.\ TE\ congruent\ to\ EN[/tex]

Step-by-step explanation:

[tex]As\ we\ know\ that,\\A\ median\ bisects\ the\ base\ side\ of\ a\ triangle.\\Hence,\\As\ AE\ is\ the\ median\ in\ this\ case,\\it\ bisects\ TN\ into\ congruent\ sides\ TE\ and\ EN.\\Hence,\\TE\ congruent\ to\ EN\\[/tex]

Answer:

0.5 i believe

Step-by-step explanation:

Answer:

answer:

0.5

Step-by-step explanation:

hope it helps

The algebraic expression of the phrase "2 times the sum of −3 and m" is 2(-3+m)

Given,

The expression

"2 times the sum of −3 and m"

We know algebraic expression is the expression which consist of variables and constants with the algebraic operation.

Here,

2 times the sum of -3 and m

sum of -3 and m = -3+m

2 times the sum of -3 and m = 2×(-3+m)

The algebraic expression is 2(-3+m)

Hence, The algebraic expression of the phrase "2 times the sum of −3 and m" is 2(-3+m)

Learn more about algebraic expression here

brainly.com/question/953809

#SPJ1

Given:

[tex]f(x)=\begin{cases}-\dfrac{1}{2}x^2 & 0<x\leq 3 \\ x^3+2x & x>3\end{cases}[/tex]

To find:

The value of f(3).

Step-by-step explanation:

For x=3, we have

[tex]f(x)=-\dfrac{1}{2}x^2[/tex]

Putting x=3  in the above function, we get

[tex]f(3)=-\dfrac{1}{2}(3)^2[/tex]

[tex]f(3)=-\dfrac{1}{2}(9)[/tex]

[tex]f(3)=-\dfrac{9}{2}[/tex]

Therefore, the value of f(3) is [tex]-\dfrac{9}{2}[/tex].  So, the correct option is a.

Answer:

✔️The correct system of linear equations:

2x + 3y = 34

3x + 2y = 36

Cost of each roast beef sandwich: $8

Cost of each turkey sandwich: $6

Step-by-step explanation:

Cost of each roast beef sandwich = x

Cost of each turkey sandwich = y

First platter consists of:

2 roast beef sandwiches, which costs 2 × x = 2x, and,

3 turkey sandwiches, which costs 3 × y = 3y.

Total cost of first platter is $34.

Thus, an equation that represents this scenario would be:

2x + 3y = 34.

The other platter consists of:

3 roast beef sandwiches, which costs 3 × x = 3x, and,

2 turkey sandwiches, which costs 2 × y = 2y.

Total cost is $36.

Thus, an equation that represents this scenario would be:

3x + 2y = 36.

The correct system of linear equations would be:

2x + 3y = 34

3x + 2y = 36

Find the value of x and y by solving simultaneously.

Thus:

2x + 3y = 34 ----› Eqn. 1 × 2

3x + 2y = 36 ----› Eqn. 2 × 3

4x + 6y = 68

9x + 6y = 108

Subtract

-5x = - 40

Divide both sides by -5

x = 8

Cost of each roast beef sandwich = x = $8

Substitute x = 8 into eqn. 1.

2x + 3y = 34 ----› Eqn.

2(8) + 3y = 34

16 + 3y = 34

3y = 34 - 16

3y = 18

Divide both sides by 3

y = 6

Cost of each turkey sandwich = y = $6

Answer:

There isn't one!

Step-by-step explanation:

Integers are numbers with no fractional or decimal part. There is no non-fractional or decimal number between two consecutive integers, so the answer is there isn't one!

Two equal expressions combine to make an equation. Jake made a mistake in step 2 and the value of x is 24. The right answer is A.

When two equal expressions are added together with the aid of the equal sign "=," an equation is created.

You may find the solution to the given equation 1/3x + 7 = 15 as shown below.

1/3x + 7 = 15

Subtract 7 from both sides of the given equation

=> 1/3x + 7 - 7

=15 - 7.

1/3x = 8

Multiply both sides of the given equation by 3,

3 x 1/3x = 3 X 8.

x = 24

Hence, X has a value of 24. Jake also erred on the second step.

To learn more about Equation solving, visit:

brainly.com/question/14916678

#SPJ9

Answer:

my boi jake made a mistake at step 2

Step-by-step explanation:

Answer:

32

Step-by-step explanation:

2 * (5 + 8 + 3) = 2 * 16 = 32

The complete factor is (2x+1)/(2x+1)^2

(2x+1)^-2/3+(2x+1)^1/3

X= 1/(2x+1)^2/3+(2x+1)^1/3

(3)^-2=1/3^2

The complete factor form is

x/(2x+1)^2/3+(2x+1)^1/3

=1 x+(2x+1)^2/3×(2x+1)^1/3/

(2x+1)^2/3

x+(2x+1)^2/3+1/3 =3/3=1

/

(2x+1)^2/3

X+(2x+1)/(2x+1)/(2x+1)^2/3

3x+1/(2x+1)^2/3 (Ans)

To know more complete factor click

https://brainly.com/question/25829061

#SPJ9

Answer:

0.09375

Step-by-step explanation:

brainest plz

Answer:

9 dollars per dog

Step-by-step explanation:

45/5=9

you divide to find the unit rate per 1 dog walked.

Answer:

  (d)

Step-by-step explanation:

You want the inverse function of the given one-to-one function.

A function given as ordered pairs is one-to-one if no x-values are repeated and no y-values are repeated.

As the directions tell you, the inverse function is found by changing the order of the values in each ordered pair.

  function  ⇒  inverse function

  (-1, 4)  ⇒  (4, -1) . . . . for example

See the attachment for the complete list.

Answer:

A

Step-by-step explanation:

Answer:

C. 10 = 3x + 6

Step-by-step explanation:

10 = 3/2 (2x + 4)

becomes

10 = 3x + 6

Answer:

z

Step-by-step explanation:

z . z = z² and √z² = z

Answer: 7

Step-by-step explanation:

if Martha jarred 6 liters of jam in 2 days,

she will jarred 3 litters of jam in one day

for 21 litters she will need 7 days

21/3=7

Answer:

Brainly does not have the correct answer listed as a choice - it should be [tex]2187y^{14}[/tex]

Step-by-step explanation:

The answer is C: (-3,-1)

To test if points satisfy an equation, all you need to do is test the numbers in both of the equations it provides you

Here is proof the answer is C :

y > x - 2

(lets plug in point C)

-1 > -3 - 2

solve

-1 > -5 ?

Yes this statement is true- onto the next inequalitity!

y > 2x + 2

-1 > 2(-3) + 2

solve

-1 > -6 + 2

-1 > -4 ?

Yes, this inequality is true too!

Know we know answer c (-3,-1) is the right answer!

The point (x,y) satisfies the given system of inequalities is C. (-3,-1).

If the equation or inequality contains variable terms, then there might be some values of those variables for which that equation or inequality might be true. Such values are called solution to that equation or inequality.

Given that The graph below represents the following system of inequalities.

y> - 2

y > 21 + 2

So, y > x - 2

Lets plug in point C;

-1 > -3 - 2

solve;

-1 > -5 ?

Yes this statement is true- onto the next inequalitity.

y > 2x + 2

-1 > 2(-3) + 2

solve;

-1 > -6 + 2

-1 > -4 ?

Yes, this inequality is true too!

Therefore, the point (x,y) satisfies the given system of inequalities is C. (-3,-1).

Learn more about inequalities here:

https://brainly.com/question/27425770

#SPJ6

Answer:

5

Step-by-step explanation:

Answer:

I think it's c

Step-by-step explanation:

but I might be

=====================================================

Explanation:

When two letters are placed together without any space between them, this implies multiplication.

gf = g times f

So we'll be multiplying the functions g and f.

There are two ways to approach this problem.

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

Method 1

First we need to find f(4) and g(4)

f(x) = 2x+3

f(4) = 2*4+3

f(4) = 8+3

f(4) = 11

g(x) = 2x^2-1

g(4) = 2(4)^2-1

g(4) = 2(16)-1

g(4) = 32-1

g(4) = 31

Now we multiply the results

gf(4) = g(4)*f(4)

gf(4) = 11*31

gf(4) = 341

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

Method 2

We'll multiply g(x) with f(x) like so

gf(x) = g(x)*f(x)

gf(x) = (2x^2-1)*(2x+3)

gf(x) = 2x^2*(2x+3) - 1(2x+3) .... distribute

gf(x) = 4x^3+6x^2-2x-3 .... distribute again

Now plug in x = 4

gf(x) = 4x^3+6x^2-2x-3

gf(4) = 4(4)^3+6(4)^2-2(4)-3

gf(4) = 4(64)+6(16)-2(4)-3

gf(4) = 256+96-8-3

gf(4) = 341

We get the same result. Method 1 may be the better method, but it will depend on your preference.