MATHEMATICS COLLEGE

40% of the girls are fair and the reminder is brown. Half of the girl are beautiful and half are moderate. If 10% of the girls are fair and beautiful, and 40 girls are brown and moderate, how many girls are fair and moderate?

Answers

Answer 1
Answer: So-called two-way tables method.
60 girls. 

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What is the first step to solve this equation:11 - 3x = 44
Which situation is best represented by the following equation? 45w + 123.95 = 753.95 A. Erica paid $753.95 for dance classes. She paid a $123.95 registration fee and $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? B. Erica paid $753.95 for dance classes. She paid a $45 registration fee and $123.95 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? C. Erica and her sister paid $753.95 for dance classes. Erica paid $123.95 for each week she was enrolled in the classes, and her sister paid $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica and her sister were enrolled in dance classes? D. Erica paid $753.95 for dance classes. She paid $123.95 for each week she was enrolled in the classes after using a coupon that gave her $45 off the price per week. What is w, the number of weeks Erica was enrolled in dance classes?

Fator the following problem x^2+12x+36​

Answers

Answer:

(x+6)2

Step-by-step explanation:1

What two numbers sum up to the middle term (6), and have a product of the last term (36)?

After some trial and error, we arrive at 6 and 6, which means we can factor this as

(x+6)(x+6) or (x+6)2

Another way we could have approached this is that we see that the leading term and the last term are both perfect squares.

With this in mind, we could rewrite the expression as

(x)2+12x+(6)2

Now, it becomes a little more clearer that we can factor this as

(x+6)2

Answer:

(x-6)^2

Step-by-step explanation:

Hope this helped

A trapezoid has an area of 975 square meters. The height of the trapezoid is 50 ​meters, and the length of the longer base is twice that of the shorter base. Find the length of each base of the trapezoid.

Answers

Area of trapezoid(A) =(1/2) (b1 + b2)*h

b1= x   - shorter base
b2=2x  - longer base
A=975 m²
h=50 m

975 =(1/2) (x + 2x)*50
975 = 25*3x
975 = 75x
x=975/75 = 13 m

x= b1 = 13 m
b2=13*2=26 m

b1=13 m,
b2 = 26 m, 

35 minus 3 multiply by 8

Answers

Answer:

3*8=24 --------- 35-24=11

Answer:

11

Step-by-step explanation:

The equation is 35 - 3 • 8

To solve it, we can use the order of operations: PEMDAS. (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)

Simplify:

35 - 24

11

hope this helps! have a great day!

90 percent confidence interval for the proportion difference p1−p2 was calculated to be (0.247,0.325). Which of the following conclusions is supported by the interval?A. There is evidence to conclude that p1>p2 because 0.325 is greater than 0.247.
B. There is evidence to conclude that p1C.There is evidence to conclude that p1>p2 because all values in the interval are positive.
D. There is evidence to conclude that p1E. There is evidence to conclude that p2>p1 because 0.247 and 0.325 are both greater than 0.05.

Answers

You can use the fact that the 90% confidence interval given is all positive value for the test statistic being the difference of p_1 and p_2.

The conclusion that is supported by the given confidence interval is given by:

Option C: There is evidence to conclude that p_1 > p_2 because all values in the interval are positive.

How can we conclude that there is evidence that  p_1 > p_2?

Since it is given that the difference is measured by p_1 - p_2,

and  since the given confidence interval at 90% confidence for that difference is obtained to be (0.247,0.325), thus we can say that 90% difference value of   p_1 - p_2, will be lying in that given interval.

Since the interval is all positive, thus we can say that 90% of the times, the difference  p_1 - p_2 will be positive which indicates that p_1 > p_2

Thus, the conclusion that is supported by the interval is given by:

Option C: There is evidence to conclude that p_1 > p_2 because all values in the interval are positive.

Learn more about confidence interval here:

brainly.com/question/14562078

Answer:

C

Step-by-step explanation:

Statistics!!

When we have a confidence interval for the difference in proportions or means, our null hypothesis is always that there's no difference. (H0 = p1-p2 = 0.)

If the difference is positive, that means we have sufficient evidence p1>p2.

If it's negative, then we have sufficient evidence p2>p1.

Why not A: incorrect interpretation of the interval

Why not B: doesn't look like a complete answer

Why not D: also doesn't look like a complete answer

Why not E: this confuses the definition of alpha-level and p-value with confidence interval values. If those were p-values and greater or less than an alpha-level, we would reject or fail to reject the null hypothesis. That isn't the case here.

Solve the following problem:

Answers

Answer:

n^(8)

Step-by-step explanation:

Given the Quotient Rule of Exponents:(a^(m))/(a^(n)) = a^((m-n)), you must subtract the exponents of each exponential expression (in fractions) before applying the Product Rule of Exponents (I will explain in a while what it means).

First, subtract the exponents of the first fraction, (n^(5))/(n^(3)) = n^((5 - 3)) = n^(2)

Next, subtract the exponents of the second fraction:  (n^(9))/(n^(3)) = n^((9 - 3)) = n^(6)

At this point, we have the following exponential expressions: n^(2) and n^(6).

Since the required operation is multiplication, then you can apply the Product Rule of Exponents: a^(m) a^(n) = a^((m+n))

n^(2)*n^(6) = n^((2+6)) = n^(8)

Therefore, the correct answer is n^(8).

Please mark my answers as the Brainliest, if you find this helpful :)

Which of these tables represents a function

Answers

Answer: choice D

Step-by-step explanation:

In order for something to be a function for every x input there must be exactly 1 y output. This means that if x is a number then y must always be 1 number and that 1 number only.
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NEED HELP ASAP!!!!The steps below show the work of a student used to calculate the number of yards in 6,436 meters.(1 mile = 1,609 meters)(1 mile = 1,760 yards)Step 1: 6,436 meters multiplied by conversion factor 1 mile over 1,609 meters equals 4 milesStep 2: conversion factor of 1,760 yards over 1 mile divided by 4 miles equals 440 yardsStep 3: 440 yards(1 mile = 1,609 meters)(1 mile = 1,760 yards)How can the error in the student's work be corrected? (1 point)aThe 6,436 meters and the 1,609 meters in Step 1 should be switched.bThe 1 mile and the 1,609 meters in Step 1 should be switched.cThe conversion factor should be multiplied in Step 2 instead of being divided.dThe conversion factor should be added in Step 2 instead of being divided.
Please help ASAP. Worth 50 points