Original grade: 80
New grade: 100
Find the percent of increase.
107
Step-by-step explanation:
Based on the given conditions,
Formulate:(100-80)÷80
Calculate the sum or difference:20/80
Cross out the common factor:1/4
Multiply a number to both the numerator and the denominator:1/4×25/25
Write as a single fraction :25/4×25
Calculate the product or quotient :25/100
Rewrite a fraction with denominator equals 100 to a percentage:25%
Answer : 25%
PLEASE HELP quick
………
Answer:
50
Step-by-step explanation:
1/2 x base x height
In this problem: (It's times 2 because I split it up into 2 triangles.)
1/2 x 10 x 5 x 2 =
50
hope this helps
have a good day
Silver Springs Moving and Storage Inc. is studying the relationship between the number of rooms in a move and the number of labor
hours required for the move. Compute a correlation coefficient.
Rooms
Labor hours
Labor hours
Rooms
2.5
1
3
17
1
15
3
18
ed
1.5
35
1.5
28
2
19
33
9
40
ok
5
int
ences
8
16
17
2
15
2.5
16
2.5
24
3
3.5
4
4.5
5
The correlation coefficient of the dataset on the table is 0.8271
How to compute a correlation coefficient?See attachment for the proper table that represents the relationship
Next, we compute a correlation coefficient using a graphing calculator.
The graphing calculator has the following calculation summary:
X Values
∑ = 39.5Mean = 2.633∑(X - Mx)² = SSx = 20.733Y Values
∑ = 304Mean = 20.267∑(Y - My)² = SSy = 1410.933X and Y Combined
N = 15∑(X - Mx)(Y - My) = 141.467The correlation coefficient is calculated using:
[tex]r = \frac{\sum((X - \bar y)(Y - \bar x)) }{ \sqrt{(SSx)(SSy)}}[/tex]
So, we have:
[tex]r = \frac{141.467}{\sqrt{(20.733) * (1410.933)}}[/tex]
Evaluate
r = 0.8271
Hence, the correlation coefficient is 0.8271
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Which measure of spread is best for the data in the table?
City
Population
(thousands)
1
340
2
480
3
385
4
450
5
600
6
325
O A. range
OB. quartile
O C.
O D. interquartile range
mean absolute deviation
Answer:
the answer is C mean absolute deviation
help will mark Brainliest
Answer:
A.
Step-by-step explanation:
16 multiplied by 2 is not 30
Hope this helps! ;-)
Answer:
a/top left
Step-by-step explanation:
16 x 2 is 32 not 30
Which is the graph of -2x + y < 5?
Answer:
Graph D
Step-by-step explanation:
Graph D is the graph of -2x + y < 5
A box is filled with 5red crayons, 9blue crayons, and 6yellow crayons.
A crayon is chosen at random from the box. Find the probability that it is a red or a blue crayon.
Write your answer as a fraction in the simplest form.
Answer:
[tex]\frac{7}{10}[/tex]
Step-by-step explanation:
P(R or B)=[tex]\frac{5}{20}+\frac{9}{20}[/tex]
=[tex]\frac{7}{10}[/tex]
pls help, urgently!!!
Answer:
Yes, no is correct
Step-by-step explanation:
This is because you only add up the outside sides of the polygon to find the perimeter. None of the inside sides. Hope this makes sense and hope it helps.
Answer:
No, because the friend counted a length that is inside of the polygon, which you don't need for finding the perimeter, since the perimeter is the sum of the outside lengths of the polygon.
answer these questions:
Q- What score represents the mean?
Q-What percent of the scores were between 81 and 87?
Will give brainliest!!
Solve (x+7)^2=49 algebra
Answer: x = 0
Step-by-step explanation:
Given:
(x + 7)² = 49
Distribute:
x² + 7² = 49
Square:
x² + 49 = 49
Subtract 49 from both sides of the equation:
x² = 0
x = 0
The only solution to this equation is 0.
-> We can also see this with graphing. See attached.
answer:
x=0
Step-by-step explanation:
(x+7)^2=49
take the square root of both sides
√(x+7)^2=√49
x+7=7
x=0
1. Roll a standard die. Amanda wins if the result is prime or 1. Beto wins
if the result is composite
Answer:
What is the question?
Step-by-step explanation:
prime: 1, 2, 3, 5
composite: 4, 6
Beto has 2/6 = 1/3 chance of winning
Amanda has 4/6 = 2/3 chance of winning
Need help! Need Urgent
The amount of paper that Lemon needs for the actual poster will be 8 square feet.
What is a rectangle?It is a polygon with four sides. The total interior angle is 360 degrees. A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.
The dimension of the poster is 10 cm by 20 cm.
And the scale factor will be 5 cm is equal to 1 ft.
Then the dimension of the poster will be 2 ft by 4 ft.
Then the amount of the paper that Lemon needs for the actual poster will be
Area = 2 × 4
Area = 8 ft²
More about the rectangle link is given below.
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Help me please I need it right now like now now
Answer:
$0.84
Step-by-step explanation:
Pam bought a pair of shoes on sale for $22.40. If this was 20%. Off the original price, find the original price of the shoes
Answer:
26.88
Step-by-step explanation:
20%*22.40=4.48
22.40+4.48=26.88
Please help me I’m confused
cant delete this answer. my bad
Read the following stock quote. What is the current price of this stock?
IMAX Corporation (Nasdaq:IMAX)
16.04 0.49 (3.15%) 11:51am ET
$3.15
3.15 percent
$.49
$16.04
Answer:
$16.04
(see the answer for explanation)
Given: segment AB || segment DE, C is the midpoint of segment DB. Prove LABC = AEDE Fill in the missing statement for the proof.
Answer: B
Step-by-step explanation:
PLEASE HELP ME I NEED HELP
Answer:
5x + 7y = 37
Step-by-step explanation:
I hope it is the answer
Hello, can I please get some help :))
Answer:
add the seven to one and divide by three then subtract two
The diameter of a circle is 2 miles. What is the circle's area?
d=2 mi
square miles
Use 3.14 for л.
Answer:
A= 3.14
Step-by-step explanation:
The formula for finding the area of a circle is A=π r²
The radius = half of the diameter so that makes the radius 1 in this case.
When you plug in the values for the equation you get A= 3.14*1²
Answer:
3.14
Step-by-step explanation:
The Formula for area of a circle is л times r^2. R(radius) is half of D(diameter )in which this case is 1. So 1^2 = 1 times л which is 3.14. 3.14 times 1 = 3.14 as answer.
Kevin invest $2,000 at 4.6% compounded continuously. How long will it take him to have $3,700
Answer:
t=In(37/20)/0.046
Step-by-step explanation:
p=2000
r=0.046
A=3700
t=?
3700=2000e^0.046t
switch sides
2000e^0.046t=3700
Divide both sides by 2000
$2000e^0.046t/2000=$3700/2000
Simplify
e^0.046=37/20
Apply exponent rules
0.046=37/20
Solve 0.046t = ln(37/20)
t=In(37/20)/0.046
0.0% Complete
Your last doctor's visit cost $105. Health insurance through your employer paid $84, and
you paid the remaining $21. What percentage of the cost did you pay?
7
A. 20%
B. 21%
C. 25%
D. 80%
E. 84%
A Report Content Errors
Support
o
i
NA
Type here to search
Find the missing length.
✓ [?]
?
C=
C
2
11
Pythagorean Theorem: a2 + b2 = c2
Enter
Answer:
11.18 is the missing length
5b8c3
The degree of the monomial is?
Answer:
8
Step-by-step explanation:
The given monomial is :
5b⁸c³The degree of the monomial is the highest power to which a variable is raised to in the monomial. The greatest power in this case belongs to b⁸, which has a power of 8.
Hence, the degree of the monomial is 8
Type in your answer:
X = ?
Angle KPN =?
Angle NPO =?
Answer:
x=31
KPN =62
NPO=28
Step-by-step explanation:
KPO = 90(right angle) =2x + (x-3)
3X=90+3
X= 31
NPO = 31-3
NPO=28
KPN = 2*31
KPN =62
Need help on telling which ones are similar and not similar please and thank you!
A and B are Similar
B and C are not Similar
A and C are not Similar
--
Square A and B use numbers in the tens whilst square C used 72 not tens and because A and B you add 20 to both sides and then they are equal.
A group of friends are dining at a
pizza parlor. They have 1 1/2 pizzas. If
each friend eats 1/4 of a pizza, how
many friends can have an equal
share?
Answer:
6 friends
Step-by-step explanation:
because 1/4 goes 4 times into a whole 1 and then 2 times into a half, equalling six
Respond
1. Describe a real-life situation that can be modeled by a function (a relation in which every input
value corresponds to only one output value). The situation must be different from the examples
provided in the reading and in the homework. Identify the input value and the output value of the function, and provide justification that your
relation does, in fact, represent a function.
2. Create a function in the form y = f(x) that models the relation described. You may choose variables in place of y or x that better represent the relation, as seen in the provided example.
3. Identify the domain and range of your function, using proper mathematical notation.
4. Cite any sources you may have used in
formulating your response.
A real-life situation that can be modeled by a function is that Bob has 20 pens and buys extra 5 pens weekly.
What is a function?It should be noted that a function simply means an expression that shows the relationship between the variables.
In this case, a real-life situation that can be modeled by a function is that Bob has 20 pens and buys extra 5 pens weekly.
The function will be:
= 20 + 5w
where w represents the number of weeks.
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How to simplify question below ?
Answer:
[tex]3x^2y[/tex]
Step-by-step explanation:
The cube root of 27 is 3.
With indices, cube rooting them is the equivalent of multiplying by 1/3 so:
[tex]x^2y[/tex].
Put these 2 things together and you get:
[tex]3x^2y[/tex]
In the whole number 70,819 the place value of the digit 1 is
Step-by-step explanation:
a number is a sequence of digits with every position being multiplied by increasing powers of 10.
and the whole number is then the sum of of these little multiplications.
the first position left of the decimal point is for 10⁰ (1). the second position is 10¹ (10). the third position for 10² (100). and so on.
the given number is therefore just the short version of
7×10⁴ + 0×10³ + 8×10² + 1×10¹ + 9×10⁰
and therefore, the digit 1 in this number has the value 1×10¹ = 10, which is also the place value, 10¹ = 10.
