Answers
Answer:
A
Step-by-step explanation:
100/25 = 4
but we have 5 students absent so 25-5=20
100/20 = 5
so A
Related Questions
A direct variation includes the points (3,72) and ( – 2,n). Find n.
Answers
Answer:
n = -48
Step-by-step explanation:
Use the attachment for a full explanation.
Separate 79 into two parts such that 4 times the smaller exceeds the larger by 6.
1. Assign the variables.
2. Write the equations.
3. Solve the system.
4. Answer the question.
Answers
39 is separated into two parts 9 and 30
Step-by-step explanation:
The given is:
Separate 39 into two parts
4 times the smaller part exceeds the larger part by 6
Assume that the smaller part is x and the larger part is y
∵ 39 is separate into two parts x and y
∴ x + y = 39 ⇒ (1)
∵ x is the smaller part
∵ y is the larger part
∵ 4 times the smaller part exceeds the larger part by 6
- Multiply x by 4 and subtract y from it to get 6
∴ 4x - y = 6 ⇒ (2)
Now we have a system of equations to solve it
Add equations (1) and (2) to eliminate y
∵ (x + 4x) + (y - y) = (39 + 6)
∴ 5x = 45
- Divide both sides by 5
∴ x = 9
Substitute the value of x in equation (1) to find y
∴ 9 + y = 39
- Subtract 9 from both sides
∴ y = 30
∴ The smaller part is 9 and the larger part is 30
39 is separated into two parts 9 and 30
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Solve for the rational equation 1/x = x/x+1
Answers
Answer:
the answer is x=1/2
Step-by-step explanation:
hope this helps if not let me know have a blessed day
2x²+3x-20=0 Using the quadratic steps, Please show the Steps
THANK YOUU
Answers
Answer:
-4 and 2.5
Step-by-step explanation:
-3+-√9+160/4
-3+-13/4
-3-13/4 = -4
-3+13/4 = 2.5
please solve for me please be correct
Answers
Answer:
70
Step-by-step explanation:
Substitute 4 in for x since x = 4:
5(2(4) + 6)
5(8 + 6)
5(14)
= 70
hope this helps!
Scientists are conducting trials on a new disinfectant for use in hospitals and doctor’s offices. After conducting several trials, they found that it decreases the presence of bacteria by 35% each second that it is applied to a surface. The next trial will apply it on a desk surface with approximately 20,000 cells of bacteria on it.
Which logarithmic function models the time, , in seconds, it will take the number of cells to decrease to a value of n?
A.
B.
C.
D.
Answers
Answer:
Log 0.65(n/20,000)
Step-by-step explanation:
Trust me gang I’m onna online too
UH SORRY I NEED HELP WItH MORE QUeSTIONs !!:)
which coordinate plains contains points 1 1/2 4 -2, -2 1/2
PLEASE ANSWer
Answers
Answer:
D
Step-by-step explanation:
The coordinate plane in option D contains both the points (1 1/2, 4) and (-2, -2 1/2).
The diameter of a circle measures 18ft what is the circumference of the circle? Use 3.14 for π and do not round
Answers
=======================================================
Work Shown:
d = diameter = 18 ft
pi = 3.14 approximately
C = circumference
C = pi*d
C = 3.14*18
C = 56.52
The distance around the circle's edge (aka perimeter) is about 56.52 feet
The result is approximate since pi = 3.14 is approximate.
NEED HELP! ILL GIVE YOU BRAINLIEST I PROMISE
Use rhombus CUAT to find each value.
If m<TCU = 100, how to find m<CUT
Please dont put a link as an answer⚠︎
Answers
Answer:
(2)m<cut = 40
Step-by-step explanation
m<TCU + m<CUA=180°; M<TCU=100°
Then m<CUA=180°-100°=80°
m<CUT = 1/2 M<CUA = 1/2 80°=40°
sorry if it doesnt make any sense
Select ALL the sets that are the three side lengths of right triangles.
Answers
Answer:
c and d, b
Step-by-step explanation:
a - 49+64 = 113 so not a rt triangle
b - 16+100 = 116 again not rt triangle but 84+16 = 100 which is a rt triangle
c - 8+121 = 129 rt triangle
d - 1+3 = 4 rt triangle
Answer:
C and D
Step-by-step explanation:
Wil says that he can draw a quadrilateral that is both a rhombus and a trapezoid. Shane says that is not possible. Explain who is correct.
Answers
Answer:
it's correct
Step-by-step explanation:
a quadrilateral can be either a rhombus or a
trapezoid only if you draw the two to together
it will be a rhombus and a trapezoid
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Translate
area of a circle is 41.73m².
the length of the diameter
ded to 1 DR.
Share...
Answers
Answer:
3.64m
Step-by-step explanation:
the square root of 41.73m/3.14
Liam had 5 7/8 of cups of flour he used 2 3/8 cups of flour to make bread he used 1 5/5 eighths cups of flour to make muffins how much
Answers
Polly has 7 cucumbers to sell at the market. She has 3 times more carrots than cucumbers. She sells 6 carrots at the market. How many carrots does Polly have left
Answers
Answer:
15
Step-by-step explanation:
7x3=21
21-6=15
the word times means to multiply a number the said amount of times for example
cat has 5 sticks. Roger has 2 times as many sticks as cat. the equation is 5 × 2 that would equal 10. :)
which of the following choices are equivalent to the expression below? check all that apply
x^3 /5
Answers
The choices are equivalent to the expression correct choices are A, C, and D.
The given expression is
x^3 /5
What is the expression?
The expression consists of numbers and arithmetic operators. It does not contain equality or inequality symbols.
What is the power rule?
[tex]a^{\frac{m}{n} =\sqrt[n]{a^m}[/tex]
Therefore the above power rule implies that,
[tex]x^{(\frac{3}{5}) }=\sqrt[5]{x^3}[/tex]
Also, we have the power rule
[tex](a^m)}^n=a^{mn}[/tex]
[tex]x^{\frac{3}5} =(x^3)^{\frac{1}{5}[/tex]
or it can be written as
[tex]x^{\frac{3}{5} =(\sqrt[5]{x})^3[/tex]
The correct choices are A, C, D.
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Find the interquartile range (IQR) of the data in the dot plot below.
1,2,3,3,4,4,4,6
Answers
The value of interquartile range (IQR) of the data set which is plotted in the dot plot 1,2,3,3,4,4,4,6 is 1.5.
What is the interquartile range (IQR) of the data?The interquartile range (IQR) of the data is the middle half of the data, which contains 2nd and 3rd quartiles.
Interquartile range is the difference of third quartile and first quartile.
IQR=Q₃-Q₁
In the dot plot below, the data is given as,
1,2,3,3,4,4,4,6
The first quartile is the medium of the lower half, while the third quartile is the medium of the upper half. For the above data,
Q_1=2.5
Q_3=4
Thus, Interquartile range is,
IQR=Q₃-Q₁
IQR=4-2.5
IQR=1.5
Hence, the value of interquartile range (IQR) of the data set which is plotted in the dot plot 1,2,3,3,4,4,4,6 is 1.5.
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What is b and c in a quadratic equation if the equation is y=x2
Answers
A quadratic equation graph is a graph depicting the values of all the roots of the quadratic equation.
The value of b and c is zero.
What is the quadratic equation?A quadratic equation is said to be any polynomial equation of degree 2 or an equation that is in the form;
[tex]\rm ax^ 2 + bx + c = 0[/tex]
A quadratic equation graph is a graph depicting the values of all the roots of the quadratic equation.
Let us have a quadratic equation which is;
[tex]\rm x^2+5x+6[/tex]
On comparing with the standard equation of quadratic formula;
a = 1, b = 5, and c = 6
The equation is;
[tex]\rm y=x^2\\\\[/tex]
In this case the value of a = 1, b = 0, and c =0.
Hence, the value of b and c is zero.
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The difference between two numbers is 10 and their sum is 24. Find the numbers.
Answers
Answer: y is 7 and x is 17
Step-by-step explanation:
x is the bigger numbr
y is the smol numbr
x + y = 24
x - y = 10
x = 17
y = 7
A box contains 5 red marbles, 7 green marbles, and 6 yellow marbles. In how many ways can 6 marbles be chosen if there should be 2 marbles of each color?
25,200
92
3,150
46
Answers
Answer:92
Step-by-step explanation: I hope it is correct
What is the y-intercept of the line given by the equation y=4.2x - 6.3
Answers
Answer:
-6.3
Step-by-step explanation:
4.2x, if x = 0, then y = -6.3
Read the picture please
Answers
Answer:
1100
Step-by-step explanation:
After rounding,
3200 - 2100 = 1100
alex has 5 t-shirts in the drawer. 2 are white, and the rest are black. He will pick a t-shirt from the drawer without looking, and then without replacing it, will pick a second t-shirt without looking. What is the probability that he will pick a white t-shirt on his first pick and a black t-shirt on his second pick?
Answers
Answer:
24%
Step-by-step explanation:
Lets consider it.
2 are white, and 3 are black.
2/5 chance of him getting white, and 3/5 chance of him getting black
So he successfully gets white on his first try.
2/5
Then he successfully gets black on his second try
2/5 * 3/5, or 6/25, or 24% of him getting white, then black.
This is all just middle school math, and I hope it helps :)
Jeremiah just got hired for a new job and will make $35,000 in his first year. Jeremiah was told that he can expect to get raises of $3,500 every year going forward. How much money in salary would Jeremiah make in his 9th year working at this job?
Answers
Answer:
Jeremiah make $66,500 in his 9th year
Step-by-step explanation:
3,500*9=31,500
35,000+31,500=66,500
Answer:
63000
Step-by-step explanation
Mai needs 3 pounds of birdseed to fill all birdeeders in her yard. the store sells birdseed by the ounce 1 pound= 16 ounce how many birdseed does mai need to fill the birdseed
Answers
Answer:
3*16= 48 ounce to fill birdseed
The volume of a right cone is 3525\piπ units^3
3
. If its diameter measures 30 units, find its height.
Answers
The height of the right cone given its volume and its diameter is 47 units.
What is the height?A cone is a three-dimensional object that has a circular base and a vertex.
Height of the cone = Volume of a cone ÷ 1/3(πr²)
Where:
π = 22/7r = radius = diameter / 2 = 30 / 2 = 15 unitsh = height3525π÷ (1/3 x π x 15²) = 47 units
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Enter the value of n so the expression (-6y+1)+(4.7y-3.1) is equivalent to (ny-2.1)
Answers
If im correct, n= -1.3
Find the surface area of the prism. 16cm 12cm 10cm 20cm
Answers
Answer:
710.48Step-by-step explanation:
I hope it's helpful for you9
Triangle UVW, with vertices U(3,-6),
V(9,-8), and W(7,-2), is drawn inside a
rectangle, as shown below.
y
2
1
-2
-1
1
2
3
4
5
6
7
8
9
10
-1
W
-2
-3
-4
-5
-6
U
-7
-8
V
-9
-10
What is the area, in square units, of
triangle UVW?
Answers
The Area of Triangle UVW be 16 squared units.
What is Area of Triangle?The area of a triangle is equal to half the product of its base and height, i.e., A = 1/2 × b × h.
Area of triangle I = [tex]\frac{1}{2} *b*h[/tex]
= 0.5 x 4 x 4
= 8 units
Area of triangle II= [tex]\frac{1}{2} *b*h[/tex]
= 0.5 x 2 x 6
= 6 units
Area of triangle III = [tex]\frac{1}{2} *b*h[/tex]
= 0.5 x 2 x 6
= 6 units
Area of rectangle = length x breadth
= 6 x 6
= 36units
Area of triangle UVW = Area of rectangle -(Area triangle I + Area of
triangle II +Area of triangle III)
= 36 - ( 8 + 6 + 6)
= 36 - 20
= 16 square units
Hence the Area of Triangle UVW = 16 square units.
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List a specific example with a set and a subset.
Your example needs to be unique and in your own words.
Answers
Some examples:
The set of all animals in the world. A subset could be the group of all dogs. The set of all people in a country. A subset would be the group of people in a small town of that same country.Everything in a person's house (set), vs items located inside the person's kitchen only (subset).The set of parallelograms. A subset is the set of all squares.The set of rational numbers, in which the collection of integers is a subset.With each example, any item or person in the subset is also found in the original set (but not vice versa). For example, any dog is an animal but not the other way around.
If you were to draw a venn diagram, then the larger circle is the set of all animals, while the subset of all dogs is a smaller circle drawn completely inside the larger one.
Those examples listed above is of course not the complete list of set & subset combos. Feel free to get creative and think of others.
if the radius is 17inches what is the diameter
l
Answers
Answer:
34
Step-by-step explanation:
Because to find the diameter simply multiply the radius by 2
17 x 2 = 34
Hope this helps!