Math final help.........
math final help......... - 1

Answers

Answer 1
Answer:

Answer:

oof final failed

Step-by-step explanation:


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Amy raises $58.75 to participate in a walk-a-thon. Jeremy raises $23.25 more than Amy. Oscar raises 3 times as much as Jeremy. How much does Oscar raise? Please show work and equation and this is 5th grade math.1. 246.00
2. 245.00
3. 246.08

Answers

Answer:

246.000

Step-by-step explanation:

Well If you take it and Line it up like this,

(A)Amy; 58.75

(J)Jeremy; A+23.25

(O)Oscar; A+23.25= ?x3

This is an easy way to find out what it is you need to do, So A+23.25 is 58.75+23.2 which should give you the value of 82, which brings you to the next step of A+23.25= ?x3 which in this you only wanna focus on the ?x3, we now know ?= 82 so this brings it to 82 times 3 which gives you a value of 246. Thus giving you your answer.

  Hope this helps.

Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hit the ball so far. Designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than 230 yards on average. A random sample of 177 golfers show that their mean driving distance is 230.7 yards, with a standard deviation of 41.8.1. Set up the null and alternative hypotheses to test for the designers belief.
a. H0 : µ ≥ 230 versus Ha : µ < 230
b. H0 : µ = 230.7 versus Ha : µ ≠ 230.7
c. H0 : µ ≥ 230.7 versus Ha : µ < 230.7
d. H0 : µ ≤ 230.7 versus Ha : µ > 230.7
e. H0 : µ ≤ 230 versus Ha : µ > 230
2. Find the value of the standardized test statistic.
a. 0.125
b. -0.125
c. 0.223
d. -0.7
e. 0.7
3. Find the P-value for the above mentioned test.
a. 0.8237
b. 0.0228
c. 0.5871
d. 0.4118
e. 0.0871

Answers

Answer:

a) e) H0 : µ ≤ 230 versus Ha : µ > 230

b) t=(230.7-230)/((41.8)/(√(177)))=0.223    

c. 0.223

c) p_v =P(t_((176))>0.223)=0.4118  

d. 0.4118

Step-by-step explanation:

Information given  

\bar X=230.7 represent the sample mean

s=41.8 represent the sample standard deviation

n=177 sample size  

\mu_o =230 represent the value to verify

t would represent the statistic  

p_v represent the p value

Part a

We want to verify if the true mean is higher than 230 yards, the system of hypothesis would be:  

Null hypothesis:\mu \leq 230  

Alternative hypothesis:\mu > 230  

The best option would be:

H0 : µ ≤ 230 versus Ha : µ > 230

Part b

The statistic is given by:

t=(\bar X-\mu_o)/((s)/(√(n)))  (1)  

Replacing the info given we got:

t=(230.7-230)/((41.8)/(√(177)))=0.223    

Part c

The degrees of freedom are:

df=n-1=177-1=176  

The p value would be given by:

p_v =P(t_((176))>0.223)=0.4118  

d. 0.4118

APEX. I’ll make you the brainliest . I need this ASAP :(Part 2: Use the formula you selected in part 1 to find the area of a circle with diameter 8 feet. Show your work and round your answer to the nearest hundredth. (2 points)
————————————
Part 3: Use the formula you selected in Part 1 to find the area of a circle with diameter 10 feet. Show your work and round your answer to the nearest hundredth. (2 points)
———————————-
Part 4: Find the difference of your answers from part 2 and 3 to find the difference in the areas. Show your work and round your answer to the nearest hundredth. (1 point)

Answers

Answer:

Part 1= Pi * R Squared

Part 2: 50.27

Part 3: 78.54

Part 4: 28.27

Step-by-step explanation:

Part 1: Memorize the formula

Part 2: 8 feet diameter = Pi * 4 squared. 8 feet is the diameter so the radius is 4. 4 squared is 16. 16 * pi = approximately 50.27, but is 50.24 if 3.14 is used as pi.

Part 3: Pi * 5 squared since 10 is diameter. 25 * pi which is close to 78.54, but is 78.5 is 3.14 is used for pi.

Part 4: I subtracted Part 3 from Part 2.

Letter b on number 11 is all I need help with. Thank you

Answers

distance = 500 feet

Since Δ VWX and Δ YZX are similar then the ratios of corresponding sides are equal, that is

(VW)/(YZ) = (VX)/(YX) = (WX)/(ZX)

completing the required values gives

(100)/(l) = (60)/(30) ( cross- multiply )

60l = 30 × 100 = 3000 ( divide both sides by 60 )

l = 500

distance across the swamp is 500 feet



What is the angle (relative to the horizontal) of a 4 in 4 roof? Is it possible to have a 7 in 4 foot? Explain.

Answers

If "y in x" means the rise is y for a run of x (both in the same units), then the tangent of the angle is y/x.

... angle for 4 in 4 roof: arctan(4/4) = 45°

Yes, it is possible to have a 7 in 4 roof.

... angle for 7 in 4 roof: arctan(7/4) = 60.3°

_____

As long as the run is non-zero, the rise can be anything you like.

A cryptarithm is a math puzzle in which the digits in a simple equation are replaced with letters. Each digit is represented by only one letter, and each letter represents a different digit. So, for example, we might represent 51+50 = 101 as AB + AC = BCB. In the cryptarithm SEND + MORE = MONEY, what digit does the letter Y represent?

Answers

Answer:

\large \boxed{\sf \begin{aligned}9567&\n+1085&\n----&-\n10652&\n\end{aligned}}

Step-by-step explanation:

Hello, let's do it step by step and see what we can find.

\begin{aligned}\text{ SEND}&\n+\text{ MORE}&\n-----&-\n\text{ MONEY}&\n\end{aligned}

We assume that M is different from 0, otherwise we could find several different solutions I would think.

It means that S + M is greater than 10, otherwise the number of digit of the result would have been 4 and not 5.

The only possible number for M is then 1. M = 1

\begin{aligned}\text{ SEND}&\n+\text{ \boxed{1}ORE}&\n-----&-\n\text{ \boxed{1}ONEY}&\n\end{aligned}

But then, S can only by 9, otherwise S + 1 < 10. S = 9

S + 1 = 10 + O if there is no carry over, so S = 9 + O

1 + S + 1 = 10 + O if there is a carry, so S = 8 + O

So O = 0 or O = 1. Wait !? M is already equal to 1 so O must be 0

E cannot be equal to N so 1 + E = N, meaning that there must be a carry over from column second from the right.

and E < 9 as we know that there is no carry over from column 3 from the right.

N + R = 10 + E => 1 + E + R = 10 + E => R = 9, impossible, as S=9

or 1 + N + R = 10 + E => 1 + 1 + E + R = 10 + E => R = 8

And there is a carry over from the column 1 from the right, so:

Y cannot be 0 or 1, as already used so D + E > 11

8 and 9 are already taken so we could have 7 + 5 = 12, 7 + 6 = 13 and that's it.

It means that E is 7 or D is 7.

If E is 7 then E+1=9=N, impossible, so D = 7

Then, E is 5 or 6

if E = 6 E + 1 = N = 7, impossible, so E = 5 and N = 6.

And 7 + 5 = 12 so Y = 2.

Hope this helps.

Do not hesitate if you need further explanation.

Thank you