Answer:
No, because each sample of 100 does not have the same chance of being selected.
Step-by-step explanation:
Simple random samples require that every possible sample of the population has an equal chance of being selected. Because of the fact that certain ages are being picked at certain amounts, not every possible sample has the same chance of being selected, so this is not an SRS.
Answer:
D.
Step-by-step explanation:
No, because each sample of 100 does not have the same chance of being selected.
A map has a scale factor of 1 in=20 miles. If the distance between Dallas and Chicago was 9 inches on the map, how many miles is it in real life?
A. 20 miles
B. 180 miles
C. 200 miles
D. 10 miles
PLS HELP ME LIKE NOW PLS!?!
Answer:
B
Step-by-step explanation:
9x20=180
y
2010
2000
1990
1980
1970
1960
1950
Х
20 30 30 45 40 40 60
Answer:
money
Step-by-step explanation:
m
What is the result when 12x3 + 20x2 + 11x + 2 is divided by 3x + 2?
Answer: 3x + 2) 12x� + 20x� + 11x + 2
Divide the first term 12x� by 3x: %2812x%5E3%29%2F%283x%29=4x%5E2
and write 4x� above the 20x�:
4x�__________
3x + 2) 12x� + 20x� + 11x + 2
Multiply the 4x� by the (3x + 2) getting 4x%5E2%283x%2B2%29=12x%5E3%2B8x%5E2 and
write it under the first two terms and draw a line underneath:
4x�__________
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
Subtract %2812x%5E3%2B20x%5E2%29-%2812x%5E3%2B8x%5E2%29=12x%5E3%2B20x%5E2-12x%5E3-8x%5E2=12x%5E2,
and write 12x� under the line under 8x�, like this:
4x�__________
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x�
Now bring down the next term + llx and write in next to the 12x�
4x�__________
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
Divide the first term on the bottom 12x� by 3x: %2812x%5E2%29%2F%283x%29=4x
and write + 4x above the 11x at the top, like this:
4x� + 4x____
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
Multiply the 4x by the (3x + 2) getting 4x%283x%2B2%29=12x%5E2%2B8x and
write it under the first two terms and draw a line underneath:
4x� + 4x____
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
Subtract %2812x%5E2%2B11x%29-%2812x%5E2%2B8x%29=12x%5E2%2B11x-12x%5E2-8x=3x,
and write 3x under the line under 8x, like this:
4x� + 4x____
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
3x
Now bring down the last term + 2 and write in next to the 3x
4x� + 4x____
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
3x + 2
Divide the first term on the bottom 3x by the 3x at the left:
%283x%29%2F%283x%29=1 and write + 1 above the + 2 at the top,
like this:
4x� + 4x + 1
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
3x + 2
Multiply the + 1 by the (3x + 2) getting 1%283x%2B2%29=3x%2B2 and
write it under the two terms at the bottom and draw a line
underneath:
4x� + 4x + 1
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
3x + 2
3x + 2
Subtract %283x%2B2%29-%283x%2B2%29=3x-3x=0,
and write 0 under the line under 2, like this:
4x� + 4x + 1
3x + 2) 12x� + 20x� + 11x + 2
12x� + 8x�
12x� + 11x
12x� + 8x
3x + 2
3x + 2
0
Now you are done and the answer is 4x%5E2%2B4x%2B1 and
since the remainder is 0 you do not have to put it over
the divisor 3x+%2B+2 and add it on like you do when
the remainder is not 0.
Step-by-step explanation:
what is -|-16|-(-16)
Answer:
Step-by-step explanation:
-|-16|-(-16)=0
1. -|-16|=-16
2. -16-(-16)= -16+16
3. -16.16=0
Solve the system of equations.
3x+4y=−23
x=3y+1
x=
y=
Answer:
i think {x,y} = {-5,-2}
Step-by-step explanation:
Quadrilateral ABCD has vertices A(–1, –2), B(–1, 3), C(4, 3) and D(4, –2). It's dilated by a factor of 2 with the center of dilation at the origin. What are the coordinates of the resulting quadrilateral A'B'C'D'?
Given:
Quadrilateral ABCD has vertices A(–1, –2), B(–1, 3), C(4, 3) and D(4, –2).
It's dilated by a factor of 2 with the center of dilation at the origin.
To find:
The coordinates of the resulting quadrilateral A'B'C'D'.
Solution:
The figure dilated by a factor of 2 with the center of dilation at the origin. So, the rule of dilation is
[tex](x,y)\to (2x,2y)[/tex]
Using the above rule, we get
[tex]A(-1,-2)\to A'(2(-1),2(-2))=A'(-2,-4)[/tex]
[tex]B(-1,3)\to B'(2(-1),2(3))=B'(-2,6)[/tex]
[tex]C(4,3)\to C'(2(4),2(3))=C'(8,6)[/tex]
[tex]D(4,-2)\to D'(2(4),2(-2))=D'(8,-4)[/tex]
Therefore, the coordinates of the resulting quadrilateral A'B'C'D' are A'(-2,-4), B'(-2,6), C'(8,6) and D'(8,-4).
Can somebody please help me??
12 roses costs $45.60, so in order to find the cost of one rose you have to divide the cost of 12 roses by 12, which gives $3.80.
Now that you know the cost of one rose, you can write an equation that gives you the cost in terms of the total number of roses by multiplying the cost of one rose by the total number of roses (x). This equation should be C = 3.8x
To find how much 18 roses would cost, you plug 18 into the previous equation for x, which gives you $68.40
Answer/Step-by-step explanation:
1. Well, we know that a dozen roses costs $45.60. We also know that a dozen is the same as 12. To know how much 1 rose costs, we need to divide $45.60 by 12.
45.60 ÷ 12 = $3.80. Therefore 1 rose costs $3.80.
2. y = yx
This is because the total amount of roses equal the cost of each rose multiplied by the amount of roses.
3. To find out how much 18 roses costs, we need to multiply the amount of one rose by 18. So, 3.80 x 18 = $68.4
Hope the helps! :D
helpppppppppppppppp this is due tonight!!!!!!!!!!
Answer:
7 and 8
Step-by-step explanation:
plss help
math work
bleh
Answer:
All 4 are solutions to the inequality.
Step-by-step explanation:
What we know:
The inequality requires that 48/f is less than or equal to 46.
Plug in each of the choices to see if that will work
48/12 ≤ 46
4 ≤ 46, so f = 12 will work.
48/-12 ≤ 46
-4 ≤ 46, so f = -12 will also work.
48/-3 ≤ 46
-16 ≤ 46, so f = -3 will work as well.
48/8 ≤ 46
6 ≤ 46, so f = 8 will work as well.
Since all 4 work, that means you should check all 4 choices on the question.
What is the weekly profit ??
Answer:
901$
Step-by-step explanation:
if the measure of angle 6 is 28⁰ then the measure of angle 3 is
Answer: 62
Step-by-step explanation:
Every triangle’s angles add up to 180. since it’s a right triangle one of the angles is 90 degrees and the other is 28 degrees. so then you have to find the other angle which would made it add up to 180. which is 62.
28+90=118
180-118=62
The length between the bases on a baseball field is 90 feet. A scale drawing shows the distance between the bases as 2 inches. One inch on this drawing
equals how many feet?
Enter your response here:
Answer:
1 inch of drawing = 45 feet
Step-by-step explanation:
Given that:
Length between the bases on a baseball field = 90 feet
As per the scale drawing, the distance between the bases is equal to 2 inches.
To find:
Length of one inch on the drawing is equal to actual length of how many feet?
Solution:
First of all, let us learn about the scale drawings.
Scale drawings are a way to represent the big real world measurements on a paper.
Therefore, small measurements are used to represent the bigger real world measurements.
Here, it is given that:
2 inches on scale is equal to 90 feet of actual length.
Therefore,
1 inch on scale is equal to [tex]\frac{90}{2}[/tex] = 45 feet of actual length.
Therefore, 1 inch of drawing = 45 feet
The perimeter of a rectangle is 53 inches. The combined length of the two shorter sides is 18 inches. What is the length of each of the longer sides? Complete the sentences to write an equation to model this problem.
Answer:
17.5 in
Step-by-step explanation:
Step one:
given
The perimeter of a rectangle is 53 inches
let the two shorter sides be the width w
so w+w= 18in
the two longer sides is L
L+L=2l
Step two:
but the expression for the perimeter of a rectangle is
P=2W+2L
53= 18+2L
53-18=2L
35=2L
divide both sides by 1
L=35/2
L=17.5
4/7 Divided by 15 in a improper fraction
Answer:
4/7 divided by 15 is 4/105. so no its not an improper fraction
Step-by-step explanation:
8^1/6 multiply 2^x = 32^1/2 Work out the exact value of x. WILL GIVE BRAINLIEST FOR CORRECT ANSWER!!!
Answer:
x=2
Step-by-step explanation:
8^1/6 x 2^x = 32^1/2
Divide by 8^1/6
2^x= 32^42/8^y6
2^x=4
but 4= 2^2
2^x= 2^2
x=2
I hope helps you and if you consider and want you can give me a Brainly crown
Answer:
[tex]\huge\boxed{x=2}}[/tex]
Step-by-step explanation:
[tex]8^\frac{1}{6}\cdot2^x=32^\frac{1}{2}\\\\(2^3)^\frac{1}{6}\cdot2^x=(2^5)^\frac{1}{2}\qquad|\text{use}\ (a^n)^m=a^{nm}\\\\2^{3\cdot\frac{1}{6}}\cdot2^x=2^{5\cdot\frac{1}{2}}\\\\2^{\frac{1}{2}}\cdot2^x=2^\frac{5}{2}\qquad|\text{use}\ a^n\cdot a^m=a^{n+m}\\\\2^{\frac{1}{2}+x}=2^\frac{5}{2}\iff\dfrac{1}{2}+x=\dfrac{5}{2}\qquad|\text{subtract}\ \dfrac{1}{2}\ \text{from both sides}\\\\x=\dfrac{4}{2}\\\\x=2[/tex]
If p (x)is equals to x cube minus x square + X + 1 find value of P (- 1)+ p(1) / 2
p(x) = x³ - x² + x + 1
i ) p(-1) = (-1)³ - ( -1 )² + ( -1 ) + 1
= -1 - 1 - 1 + 1
= -2
ii ) p( 1 ) = 1³ - 1² + 1 + 1
= 1 - 1 + 1 + 1
= 2
Now ,
[ p(-1) + p(1) ]/2
= [ -2 + 2 ]/2
= 0
https://brainly.in/question/7358377
What is the measure of angle x? (1 point)
1) 35 degrees
O2) 40 degrees
3) 45 degrees
4) 50 degrees
John raised 70 goats, then entered into a series of business transactions. He traded all the goats for
sheep at an exchange rate of 5 goats for 7 sheep. Next, he exchanged all the sheep for hogs at a rate of
4 sheep for 2 hogs. How many hogs did he get?
The bag contained only red marbles and white marbles. If the ratio of red marbles to white marbles was 5 to 4, what fraction of the marbles were white? *Complete the statement by providing the correct response in number form, using / as the fraction symbol.
The fraction of white marbles is
Answer:
The fraction of white marbles is 4/9
Step-by-step explanation:
The fraction of white marbles is 4/9. This is because the ratio provided states that for every 5 red marbles in the bag there are 4 white marbles. Therefore, in a set of 9 total marbles (5+4) we can assume that exactly 4 of those marbles will be white since that is the ratio that has been provided. If there are a total of 18 marbles we can assume that exactly 8 will be white marbles, and so on. Each of which represent the fraction of white marbles in the bag as 4/9
The measure of an angle is 47°. What is the measure of its complementary angle?
Answer: 90
Step-by-step explanation:
90 degrees. x=90-47=43 degrees.
Step-by-step explanation: We can find the measure of its complement
by taking 90 minus the measure of the original angle.
So we have 90 - 47 which is 43.
So the measure of its complement is 43°.
For every boy in an advanced math course there are 3 girls who are taking the course.
If 32 students are enrolled in the course, how many students are girls?
A:24
B:26
C:28
D:21
Answer:
If 32 students are enrolled in the course, there would be 24 girls.
Step-by-step explanation:
Given that For every boy in an advanced math course there are 3 girls who are taking the course.
It means if there are four students in the class. There would be 3 girls and 1 boy. Thus, 75% of the students are girls.
Given that there are 32 students enrolled in the course.
so
75% of 32 = 75/100 × 32
= 24
Thus, if 32 students are enrolled in the course, there would be 24 girls.
QUICKLY I DON'T HAVE ENOUGH TIME!!
When multiplying 3 or more numbers, you can ignore the signs and multiply.
To determine the sign, _______ the negatives.
If there is an odd number of negatives, the answer will be ___________.
If there is and even number of negatives, the answer wil be ____________.
Answer:
first line: count
second line: negative
third line: positive
Step-by-step explanation:
HELP!!!! WILL MARK BRAINLIEST!!!!
Answer:
the vaulue is denominator
Step-by-step explanation:
it's it's the denominator
Answer:
The denominator
Step-by-step explanation:
Does anybody know how to do that
Answer:
how to do what? there is no question attached
Step-by-step explanation:
3|x + y|^2 - (xy)^2. if x = 3 and y = -5
Answer:
-213
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
3|x + y|² - (xy)²
x = 3
y = -5
Step 2: Evaluate
Substitute: 3|3 - 5|² - (3(-5))²Multiply: 3|-2|² - (-15)²Exponents: 3|-2|² - 225Absolute Value: 3(2)² - 225Exponents: 3(4) - 225Multiply: 12 - 225Subtract: -213Find the value of x in this figure. Explain your reasoning.
x=[tex]3[/tex]
[tex]3^{2} +x^{2} =[/tex][tex]18[/tex]
⇒[tex]x^{2} =18-3^{2}[/tex]
⇒[tex]x^{2}[/tex]=[tex]18-9[/tex]
⇒[tex]x^{2}[/tex]=[tex]9[/tex]
⇒[tex]x[/tex]=√[tex]9[/tex]
⇒[tex]x=3[/tex]
Max had $22. His mother gave him $15 more. How much does Max have
now? Click on the number line that shows the right answer.
Answer:
D (The one on the very bottom)
Step-by-step explanation:
If he started with 22 and went fifteen up, the arrow should be pointing to the right to show an increase in the amount of money Max has.
22+15=37
Answer:
4.
Step-by-step explanation:
22 + 15 = 37
hope it helps
8y +9 > 41 please help im on a staar test.
Answer:
y>4
Step-by-step explanation:
8y+9>41
subtract 9
8y>32
divide by 8
y>4
Answer:
y>4
Step-by-step explanation:
8y+9>41
subtract 9 from both sides
8y>32
divide 8 on both sides
y>4
Pls help me ill give me brainliest
Do all 3 for brainliest pls
I’m new and I need help with this question.
Answer:
First answer (question 7) -18 (question 8) -13 (question 9) -3 (question 10) -2
Step-by-step explanation: