Answer:
$13
Step-by-step explanation:
multiply 65 by 80 then divide by 100, you get 52, so subtract 65 from 52 you get 13
Find the measure of the (2y-1)° angle
Answer:
69 degrees
Step-by-step explanation:
1) Find x
The angles measured x degrees and (x-28) degrees have a sum of 180 degrees because straight lines always have a measure of 180 degrees. Knowing this, construct the equation:
[tex]x+x-28=180\\2x-28=180[/tex]
Add 28 to both sides
[tex]2x-28+28=180+28\\2x=208[/tex]
Divide both sides by 2
[tex]\frac{2x}{2}= \frac{208}{2} \\x= 104[/tex]
Therefore, x is equal to 104 degrees.
2) Find the measure of the (x-28) degree angle
Plug x into x-28
[tex]x-28\\= 104-28\\= 76[/tex]
Therefore, the measure of this angle is 76 degrees.
3) Find y
All the interior angles in any triangle will add up to 180 degrees. Knowing this, we can construct another equation:
[tex](2y-1)+76+y= 180[/tex]
Open up the parentheses
[tex]2y-1+76+y= 180\\3y+75= 180[/tex]
Subtract both sides by 75
[tex]3y+75-75=180-75\\3y=105[/tex]
Divide both sides by 3
[tex]\frac{3y}{3}= \frac{105}{3} \\y=35[/tex]
Therefore, y is equal to 35 degrees.
4) Find the measure of the (2y-1) degree angle
Plug y into 2y-1
[tex]2y-1\\= 2(35)=1\\= 70-1\\= 69[/tex]
Therefore, y is equal to 69 degrees.
I hope this helps!
What is y-1 =2/3(x+3) in slope intercept form?
Answer:
The slope is just 2/3 and the y intercept is (0,3)
The probability of choosing a blue marble from a bag is 5/12 and a yellow marble 1/3. What is the probability of not choosing one of these marbles?
Answer:
1/20
Step-by-step explanation:
Simple probability is found by counting all the results which fit requirements and dividing by all possible results.
To find probability of two results in a row, multiply chance of first result by chance of second result.
Since you are replacing the marble before the second draw, we don’t have to figure out the various changes in odds for the different possible first draws. It’s just that simple.
There are 5 black marbles
There are 4 red marbles
There are always 20 marbles in all
5/20*4/20=1/4*1/5=1/20
By coincidence, the same as the chance of drawing the white marble in one draw.
Fred wants to put a carpet in this room. The carpet costs $15.00 a square yard, how much would it cost for a 3 ft by 6 feet by 9ft by 12 ft
Solution :
Cost of carpeting per square yard = $ 15.00
For 3 ft by 6 ft
1 yard = 3 feet
∴ 1 feet = [tex]$\frac{1}{3}$[/tex] yard
So,
Therefore, area of 3 ft by 6 ft is = [tex]$3 \times \frac{1}{3} \times 6 \times \frac{1}{3} $[/tex]
= 1 x 2
= 2 square yard
Therefore, cost of carpeting 2 square yard = 2 x 15
= $ 30
For 9 ft by 12 ft
1 yard = 3 feet
∴ 1 feet = [tex]$\frac{1}{3}$[/tex] yard
So,
Therefore, area of 9 ft by 12 ft is = [tex]$9 \times \frac{1}{3} \times 12 \times \frac{1}{3} $[/tex]
= 3 x 4
= 12 square yard
Therefore, cost of carpeting 2 square yard = 12 x 15
= $ 180
4, Give a pair of inequalities that describes
the set of all points in the first quadrant
Answer:
x > 0
y > 0
Step-by-step explanation:
The first quadrant is the quadrant formed by the positive x-axis and the positive y-axis.
And we know that all the elements in this quadrant are larger than zero.
Then, a point (x, y) is on the first quadrant only if:
x > 0
y > 0
Note that we ignore the points with x = 0 or y = 0, this is because these points are shared between quadrants, and these points are not defined as belonging to any quadrant.
What is the decimal form of -1 and 1/12?
Answer:
Step-by-step explanation:
1/12 = 0.0833
-1 = 0.000
please help ! no links please
Which expression is equivalent to 2(3g-4) - (8g+3)?
Answer:
I think -2g+5
Step-by-step explanation:
its distributive property and adding... hope this helped
A line passes through the point (8, -7) and has a slope of
3/4
Write an equation in slope-intercept form for this line.
Answer:
y = 3/4x - 13
Step-by-step explanation:
As we already know the slope, we just need to find the y-intercept.
y = 3/4x +b
-7 = 3/4(8) + b
-7 = 6 + b
-13 = b
y = 3/4x - 13
Find the quotient. Write your answer in scientific notation, (3.6 x 10 to the power of 7) divided by (7.2 times 10 to the 7)
Given:
The given expression is:
[tex]\dfrac{3.6\times 10^7}{7.2\times 10^7}[/tex]
To find:
The value of the quotient.
Solution:
We have,
[tex]\dfrac{3.6\times 10^7}{7.2\times 10^7}[/tex]
It can written as:
[tex]=\dfrac{3.6}{7.2}\times \dfrac{10^7}{10^7}[/tex]
[tex]=\dfrac{1}{2}\times 1[/tex]
[tex]=0.5[/tex]
It can be rewritten as:
[tex]=5\times \dfrac{1}{10}[/tex]
[tex]=5\times 10^{-1}[/tex]
Therefore, the value of the quotient is [tex]5\times 10^{-1}[/tex].
Let a1, a2 and a3 be as in (a). Let a4 = 1 4 −5 . Without doing any further calculations, find all values of t for which there will be a unique solutions to a1y1 + a2y2 + a3y3 + a4y4 = c for every vector c in R 3 . Explain your answer
Answer:
Hello your question is incomplete attached below is the complete question
a) attached below
b ) Vectors a1 and a2 are linearly independent and this is because they are a scalar multiple of each other
c) There are 3 equations and 4 unknown hence for any t value there will be a solution
Step-by-step explanation:
A) attached below
b) Vectors a1 and a2 are linearly independent and this is because they are a scalar multiple of each other
C) there are 3 equations and 4 unknown hence for any t value there will be a solution
What is a simpler form of (3x+1)(x+4) ?
Answer:
That is the simplest form.
Step-by-step explanation:
[tex]3x^2+13x+4[/tex] = (3x+1)(x+4)
Answer:
The equation is already simplified!
Step-by-step explanation:
credits to the user jlinnartz for pointing out my mistake! kudos to the explanation above!!! :)
Shawn wants to make a beaded necklace 16- inches long.
If each bead is in, wide, how many beads does he need?
Answer:
I think it would be 98
Step-by-step explanation:
Just either add or divide.
21 m
15 m
Which is closest to the length of XY?
Answer:
18.0 i think
Step-by-step explanation:
if U=π (r+h),find the value of "r" when U=16 whole 1 upon 2 and h=2
Answer:
r = 3 1/4
Step-by-step explanation:
Here, we want to find the value of r given the values
Firstly, we will write r as the subject of the formula
U = π ( r + h)
U/π = r + h
r = U/π - h
Now substitute;
U = 16 1/2 = 33/2
h = 2
π= 22/7
r = 33/2/22/7 - 2
r = (33/2 * 7/22) - 2
r = 21/4 - 2
r = (21-8)/4
r = 13/4 = 3 1/4
The function f(x) = -5x² + 20x + 55 models the height of a ball x seconds after it is thrown into the air. What is the total time that the ball is in the air?
Answer:
The ball is in the air for about 5.873 seconds.
Step-by-step explanation:
The function:
[tex]f(x)=-5x^2+20x+55[/tex]
Models the height of a ball x seconds after it is thrown in the air.
And we want to find the total time the ball is in the air.
So, we can simply find the time x at which the ball lands. If it lands, its height f above the ground will be 0. Thus:
[tex]0=-5x^2+20x+55[/tex]
We will solve for x. Dividing both sides by -5 yields:
[tex]0=x^2-4x-11[/tex]
The equation is unfactorable, so we can use the quadratic formula:
[tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
In this case, a = 1, b = -4, and c = -11. So:
[tex]\displaystyle x=\frac{-(-4)\pm\sqrt{(-4)^2-4(1)(-11)}}{2(1)}[/tex]
Evaluate:
[tex]\displaystyle\begin{aligned} x&=\frac{4\pm\sqrt{16+44}}{2}\\&=\frac{4\pm\sqrt{60}}{2}\\&=\frac{4\pm2\sqrt{15}}{2}\\&=2\pm\sqrt{15}\end{aligned}[/tex]
Approximate:
[tex]x_1=2+\sqrt{15}\approx5.873\text{ or } x_2=2-\sqrt{15}\approx-1.873[/tex]
Since time cannot be negative, our only solution is the first choice.
So, the ball is in the air for about 5.873 seconds.
Can someone please help me with math.
Answer:
Number 19 is A
Number 18 is C
Number 17 is D
Step-by-step explanation:
HELP ME PLEASEEEEEEEEEEEE
Should be D. if I'm correct. This pair of angles doesn't seem to be in the right position to form a 90 degree or a 180 degree angle, ruling out supplementary and complementary angles, and they definitely aren't vertical angles, leaving only choice D: None of the above.
visitors spend 1/3 of their time waiting in line for rides. Of the santos family spends 53/4 hours at the park how long do they wait in line
Answer: 1 11/12 hours
Step-by-step explanation:
Since visitors spend 1/3 of their time waiting in line for rides and the Santos family spends 5¾hours at the park.
The tune spent waiting in line will be calculated by multiplying ⅓ by 5¾. This will be:
= ⅓ × 5¾
= ⅓ × 23/4
= 23/12
= 1 11/12 hours
Therefore, they'll wait in the park for 1 11/12 hours
Solve for B
a^2+b^2=c^2
b r a i n l i s t to the first person to answer
A rectangle has an area of 1,280.64 square miles and a base of 36.8 miles. What is the height?
Answer:
34.8 miles
Step-by-step explanation:
First, we know that Area = Length * Width. Let's plug in those values.
1,280.64 = x * 36.8 (I put the variable "x" there since we don't know what it is)
Now, solve for x (we want to have x by itself, so divide both sides by 36.8)
34.8 = x
Now that we know that the width of it is 34.8 miles, let's check our work.
34.8 * 36.8 = 1,260.64
This equation IS true, so:
The width of the rectangle is 34.8 miles. Hope this helps!
choosing from a comedy horror or action movie each shown in four different theaters
Sally paid $1.50 for pounds of apples at the Grocery Mart. Fred paid $1.95 for 3 pounds of apples at the Corner Fruit Stand. How much did Sally pay per pound of apples? (enter in the format of money, do not use the $ sign) Answer value'
Part A: Sally paid less money per pound than Fred did
Part B: John paid $3.58 for 5.5 pounds of apples at the Grocery Mart
Part C: y = 0.65x
Step-by-step explanation:
Part A:
Sally: 1.5/2.5 = x/1
cross multiply: 2.5x = 1.5*1
simplify: 2.5x = 1.5
divide both sides by 2.5: x = 0.6
Fred: 1.95/3 = x/1
cross multiply: 3x = 1.95*1
simplify: 3x = 1.95
divide both sides by 3: x = 0.65
Fred paid 65¢/pound while Sally paid 60¢/pound
Part B:
price/pound*amount John bought: 0.65/1 = x/5.5
cross multiply: 1x = 0.65*5.5
simplify: x = 3.575
Part C:
y = 0.65x
help me this is urgent!!!!!!!
Answer:
t = 7
I hope it's helps you
Question 4 of 10
Suppose that many large samples are taken from a population, and the
sample proportions center around 0.58. Which of the following is most likely
to be the population parameter?
O A. 0.68
OB. 0.58
O C. 0.78
O D. 0.48
Answer:
A- 0.68
Step-by-step explanation:
0.58 is most likely to be the population parameter, since the sample proportions center around this value.
Option B is the correct answer.
We have,
When many large samples are taken from a population, the sample proportions should converge to the population proportion.
If the sample proportions center around a certain value, that value is likely to be a good estimate of the population proportion.
In this case,
Since the sample proportions center around 0.58, it is likely that the population proportion is also around 0.58.
Therefore,
0.58 is the most likely population parameter.
Learn more about population parameters here:
https://brainly.com/question/30689789
#SPJ7
what is the measure of angel R ? pls i need help
Answer:
40
Step-by-step explanation:
(120 - 40)/2 = 80/2 = 40
please help me with this math problem, the question is on the picture that i attached, ill mark brainliest if the answer is correct. NO links!
Answer:
cos 29 = x / 11
11 * cos 29 = x
x = 11 * 0.87462
x = 9.62082
Step-by-step explanation:
What is the area of the figure below?
5 in
13 in
12 in
Mrs. Huffman is buying a dog for her daughter, Anna. The dog can be male or female. It can be a Goldendoodle, Collie, or Retriever. The dog can be small, medium, or large. What is the probability that Anna randomly chooses a male Goldendoodle of any size?
Answer:
1/2
Step-by-step explanation:
there ARE ONLY TWO GENDERS
THE dog can be male or female =
sum genders = 2
probability of been a male = 1/2
The Wilsons have triplets and another child who is 14 years old. The sum of the ages of their children is 38. How old are the triplets? Please give me the equation!! Correct answer will get brainliest
Answer:
Each age of the triplets should be 8 years old.
Step-by-step explanation:
38-14=24
24 divided by 3 = 8
Answer:
Triplets are 8 not sure on the equation but I think its y = 8x + 38.
Step-by-step explanation:
I'm assuming that all their ages together equal 38 therefore I would take,
38 - 14 = 24; this means that the triplets ages added together equal 24. Since triplets means 3 I will take,
24 dived 3 = 8.
I check my work by doing 14 + 8 + 8 + 8 = 38.
you asked for an equation I'm sure what you mean but I can try; I'm putting it into slope intercept form.
y = 8x + 38