MATHEMATICS COLLEGE

Help ! please :D
i only have about 15 min >
help ! please :D i only have about 15 min - 1

Answers

Answer 1
Answer:

Answer:

  1. First option
  2. Third option
  3. Last option

I hope this helps!

Related Questions

Find the number of distinct triangles with a=11, b=17, and A=23°A. 0B. 1C. 2D. cannot be determined
ou write a short story, but you want to make sure your work is protected before you post it online. What should you do to help protect your copyright? (Site 1)
Scura makes sun block and their annual revenues depend on how much they sell. Let x be the quantity of 5 oz. bottles of sun block that they make and sell each year measured in 1000 's of bottles. Thus if x=10 then they make and sell 10000 bottles of sun block each year. If x=25 then they make and sell 25000 bottles of sun block each year.a. If x=50 how many bottles of sun block does Scura make and sell?b. What is x equal to if Scura produces and sells 45000 bottles of sunblock?
8/3+7/5aSimplify your answer as much as possible.
Carol drew an isosceles triangle that has an angle that measures 62°. Which could be the measures of the other two angles in Carol’s triangle?A. 62° and 62°B. 56° and 56°C. 28° and 90°D. 56° and 62°

Is 55.33 equal to 55.033

Answers

It’s is a thing called looking up the an

Writing on the SAT Exam It has been found that scores on the Writing portion of the SAT (Scholastic Aptitude Test) exam are normally distributed with mean 484 and standard deviation 115. Use the normal distribution to answer the following questions. Required:
a. What is the estimated percentile for a student who scores 425 on Writing?
b. What is the approximate score for a student who is at the 87th percentile for Writing?

Answers

Answer:

a) The estimated percentile for a student who scores 425 on Writing is the 30.5th percentile.

b) The approximate score for a student who is at the 87th percentile for Writing is 613.5.

Step-by-step explanation:

Problems of normally distributed distributions are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = (X - \mu)/(\sigma)

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 484, \sigma = 115

a. What is the estimated percentile for a student who scores 425 on Writing?

This is the pvalue of Z when X = 425. So

Z = (X - \mu)/(\sigma)

Z = (425 - 484)/(115)

Z = -0.51

Z = -0.51 has a pvalue of 0.3050.

The estimated percentile for a student who scores 425 on Writing is the 30.5th percentile.

b. What is the approximate score for a student who is at the 87th percentile for Writing?

We have to find X when Z has a pvalue of 0.87. So X for Z = 1.126.

Z = (X - \mu)/(\sigma)

1.126 = (X - 484)/(115)

X - 484 = 1.126*115

X = 613.5

The approximate score for a student who is at the 87th percentile for Writing is 613.5.

Given DA = 14, A F = 21, KE = x, and EF = 15. What must the value of x be in order to prove AE || KD?

Answers

Using cross multiplication you can determine that the ANSWER is 10.

Answer:

x=10  

Step-by-step explanation:      

We have been given an image of a triangle. We are asked to find the value of x.    

We can see that triangle AFE is similar to triangle DFK. We know that corresponding sides of similar triangle are proportional, so we can set an equation to solve for x as:

(21)/(14)=(15)/(x)  

Upon cross multiplying our given equation, we will get,

21x=15*14

(21x)/(21)=(15*14)/(21)

x=(15*2)/(3)

x=5*2  

x=10

Therefore, the value of x is 10.

After losing 3 baseball cards, Peter gave half of his remaining cards to Bobby. If Peter gave Bobby 9 baseball cards, how many cards did Peter start with?Linear equation:
1
2
(x - 3) = 9

Answers

Peter started with 21 cards
( also your bottom formula is wrong it should be 1/2(x-3)=9)

5 years ago, Cheryl was d years old, Brandon is 2 years older than Cheryl.a. how old is Cheryl

b. how old is Brandon

c. what was the difference in their ages 5 years ago?

d. what is the sum of their ages now?

e. what will the sum of their ages be two years from now?

f. what will the difference of their ages be two years from now

will mark the brainliest.

Answers

Answer: See explanation

Step-by-step explanation:

a. how old is Cheryl?

Cheryl's age = d + 5

b. how old is Brandon?

d + 5 + 2

= d + 7

c. what was the difference in their ages 5 years ago?

Cheryl age five years ago = d

Brandon's age five years ago = d + 2

Difference = d + 2 - d = 2 years

d. what is the sum of their ages now?

Cheryl's age = d + 5

Brandon age = d + 7

Sum = d + 5 + d + 7

= 2d + 12

e. what will the sum of their ages be two years from now?

Two years from now,

Cheryl's age = d + 5 + 2 = d + 7

Brandon age = d + 7 + 2 = d + 9

Sum = d + 7 + d + 9

= 2d + 16

f. what will the difference of their ages be two years from now

Two years from now,

Cheryl's age = d + 5 + 2 = d + 7

Brandon age = d + 7 + 2 = d + 9

Difference = Brandon age - Cheryl age

= (d + 9) - (d + 7)

= 2 years.

Reflect the point (0, -2) across the line y= 6

Answers

Answer:

0, 14

Step-by-step explanation:

-2, is 8 away from 6, so you add 8 to 6 to reflect it and get 14
Other Questions
What is the slope of the line that passes through the points E(5, 1) and F(2, 7)? A) 8/3B) 3/8C) -3/8D) -8/3
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree 4; zeros: 1, multiplicity 2; 2i
Find three consecutive numbers whose sum is 612
Jose can eat 5/8 of a pizza in 1/4 hours. How many hours will it take him to eat the whole pizza?