Answer: D
Step-by-step explanation:
Think about it this way, 3 squared is 3x3 correct? that equals 9. 4 squared is 16 so there you go. Sorry if this isn't answered clearly.I'm trying my best to help
Five times the sum of a number and six is equal to eight times the number, minus six. Find the number.
Answer: x=12
Step-by-step explanation:
[tex]5(x+6)=8x-6[/tex]
On the left side of the equation, open the parentheses:
[tex]5x+30=8x-6\\\\5x+30-5x=8x-6-5x\\\\30=3x-6\\\\30+6=3x-6+6\\\\36=3x[/tex]
Divide both parts of the equation by 3:
[tex]12=x[/tex]
[tex]Thus,\ x=12[/tex]
A mallard duck has 13 ducklings. Five of the ducklings are male. What
is the ratio of male to female ducklings?
Answer: 13 ducklings 5 male 7 female so the answer is 5:7
Step-by-step explanation:
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 23% of your total grade, each major test is worth 21.5%, and the final exam is worth 34%. Compute the weighted average for the following scores: 94 on the lab, 89 on the first major test, 63 on the second major test, and 73 on the final exam. Enter your answer as a whole number.
Answer: 79
Step-by-step explanation: The weighted average for the scores can be calculated as follows:
Lab score: 94 x 0.23 = 21.62
First major test: 89 x 0.215 = 19.135
Second major test: 63 x 0.215 = 13.495
Final exam: 73 x 0.34 = 24.82
Total weighted average: 21.62 + 19.135 + 13.495 + 24.82 = 78.976
Rounding to the nearest whole number, the weighted average is 79.
Anyone know how to do math work like this?? I'm
Answer: IT IS EZ IT JS 67 AND 194
Step-by-step explanation
A catapult launches a pumpkin from the base of a hill.
The height of the pumpkin is 5.7 m.
What is the height of the pumpkin?
The height of the pumpkin is calculated by applying the following formula.
y = -0.1x² + 4.9x
where;
y = 0.9x
Now, our new equation becomes;
0.9x = -0.1x² + 4.9x
re-arrange the equation, and solve for x
0.1x² = 4.9x - 0.9x
0.1x² = 4
x² = 4 / 0.1
x² = 40
x = √ ( 40 )
x = 6.32
The height of the pumpkin = 0.9x = 0.9 x 6.32 = 5.7 m
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Ramona and Malika are walking along linear routes in their county. On a map of their county, Ramona’s route passes through the coordinates (2,1)
and (0,−2)
. Malika’s route passes through the coordinates (0,3)
and (−2,0)
. Do the friends pass through a common coordinate, walk along the same route, or never cross routes?
Explain your answer
The path's of the two persons don't cross as their lines don't intersect and thus they never cross routes.
What are linear equations?Linear equations help in representing the relationship between variables such as x, y, and z, and are expressed in exponents of one degree. In these linear equations, we use algebra, starting from the basics such as the addition and subtraction of algebraic expressions.
Given here: Ramon's path passes through the co-ordinates (2,1)
and (0,−2) while Malika's passes through (0,3)
and (−2,0)
Thus using the two point of a line to construct the linear equations we get
Ramona's path is y=1.5x−2
Malika's path is y=1.5x+3
Now solving for the two equations we get
1.5x-2=1.5x+3
-2=3 which is not possible
Hence, The path's of the two persons don't cross as their lines don't intersect and thus they never cross routes.
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Peter recorded the snowfall each winter in New York for the last 4 years. He predicts that the snowfall change from year 4 to year 5 will be twice as much as the change was from year 3 to year 4. Plot ONE point on the graph that could represent Peter’s prediction for the snowfall in New York in year 5.
Plot the point on the coordinate grid below. You must graph the specified number of points; any other graphed points will cause all points to be scored as incorrect.
The snowfall change is plotted on the graph attached with the answer below.
What is coordinate geometry?A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.
Given that Peter recorded the snowfall each winter in New York for the last 4 years. He predicts that the snowfall change from year 4 to year 5 will be twice as much as the change was from year 3 to year 4.
Let the snowfall in years 3 to 4 is (2,0) so it will be in year 4 to 5 will be (4,0). Plot the two points on the graph. The graph is attached with the answer below for better understanding.
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Assume an exponential function has a starting value of 14 and a decay rate of 42%. Write an equation to model the situation.
The equation is y=
The equation to model the situation will be written as y = 14 × (0.58)ˣ.
What is an exponent?Let a be the initial value and x be the power of the exponent function and b be the increasing factor.
The exponent is given as
y = a(b)ˣ
y = a (1 ± r)ˣ
Assume an exponential function has a starting value of 14 and a decay rate of 42%. Then the equation is given as,
y = 14 × (1 - 0.42)ˣ
y = 14 × (0.58)ˣ
The equation to model the situation will be written as y = 14 × (0.58)ˣ.
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what's 5 plus 5 guys I'm so tired
Answer: it think 10
Step-by-step explanation:
and Get some sleep bro
Answer: 10
Step-by-step explanation:
5+5=10
How many degrees is the peripheral angle above the circular arc that represents 4/9 of the circle
The peripheral angle above the arc would be:
160 / 2 = 80 degrees.
Solution
The peripheral angle above a circular arc is equal to the central angle subtended by the arc divided by 2.
The central angle of a circle is 360 degrees, so if the arc represents 4/9 of the circle, the central angle subtended by the arc would be:
360 * (4/9) = 160 degrees
The peripheral angle above the arc would be:
160 / 2 = 80 degrees.
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Which of the following numbers is probably an irrational number? 0 1.6490221... 3/4 -5
The number that probably is an irrational number is 1.6490221...
How to determine the irrational numberAn irrational number is a number that cannot be expressed as a finite decimal or a fraction.
The number 0 is not irrational.
The number 1.6490221... is an example of a decimal that goes on forever, which is the characteristic of an irrational number.
The number 3/4 can be expressed as a fraction and is therefore not irrational.
The number -5 is not irrational.
Therefore, the answer is 1.6490221..., which is probably an irrational number.
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The graph of a parent function is shown. Which function belongs to the same function family as the graphed function?
Answer:
I doubt I'm wrong but it's D
Ms. Pesko pulled 5 candy bars out of a bag. She pulled the following candies: Twix, Kit-Kat, Milky Way, Twix, Twix. What is the experimental probablity of getting a Twix?
Answer:
Step-by-step explanation:
The experimental probability of getting a Twix is 3/5 or 60%.
Write 23.224 as a rational number
Answer:
Step-by-step explanation:
0.10267857142000002
Please helppp I've been stuck on this for sooo long
The relation between a and c can be written as:
a = c + 24
Which is the relationship between a and c?First we know two equations:
a = b + 12
b = c + 12
So we have relations between a and b, and between b and c, and we want a relation between a and c.
If we replace the b of the first equation with the second equation, then we will get:
a = (c + 12) + 12
a = c + 24
That is the relation between a and c.
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Mei Mei signed up for a streaming music service that costs $6 per month. The service allows Mei Mei to listen to unlimited music, but if she wants to download songs for offline listening, the service charges $0.50 per song. How much total money would Mei Mei have to pay in a month in which she downloaded 35 songs? How much would she have to pay if she downloaded
�
s songs?
Answer:
She would have to pay $17.50 for 35 songs.
Step-by-step explanation:
We have the amount it costs per song (0.50), and we have the amount of songs that she wants to buy (35). If we multiply 35 the amount of songs by 0.50 the price per song, we will have a grand total of $17.50.
35 * 0.50 = 17.50
-Hope this helped
After a 75% reduction, you purchase a new dvd player on sale for $150. What was the original price of the dvd player ?
Step-by-step explanation:
The original price was 150 / (1 - 0.75) = $600.
The scale on a 1:50 000 ordnance survey map indicates that 2cm on the map = 1km on the ground. How many centimetres would 1km be represented by on a 1:25 000 scale map
1km would be represented by 4cm on a 1 : 25000 scale map.
What is a scale factor?The scale factor defines a variable in a ratio of two different measurements.
Sometimes drawings of large models are represented in a scale factor of a smaller unit.
Given, The scale on a 1 : 50000 ordnance survey map indicates that 2cm on the map = 1km on the ground.
We know 1 km = 1×100000 = 100000 cm.
So, If 2 cm represents 100000 cm it has a scale factor of 100000/2 = 50000.
Now, Again 1 km = 100000 cm,
So, 1km will be represented by 100000/25000 = 4 cm.
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If a fair die is rolled 5 times what is the probability of rolling 3 sixes to the nearest thousandth
The probability of rolling 3 sixes to the nearest thousandth is 0.556.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
We have,
Using binomial distribution.
[tex]^nC_r P^cQ^{n - r}[/tex]
Now,
Probability of getting a six = 1/6
P = 1/6
Probability of not getting a six = 5/6
Q = 5/6
Now,
n = 5 and r = 3
So,
[tex]^nC_r P^rQ^{n - r}[/tex]
= [tex]^5C_3(1/2)^3(5/6)^2[/tex]
= (5 x 4)/2 x (1/2) x (1/2) x (1/2) x (5/6) x (5/6)
= 10 x 1/8 x 25/36
= 5/9
= 0.556
Thus,
The probability of rolling 3 sixes is 0.556.
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will give brainliest to correct answer
The sequence that represents the arithmetic sequence will be {-6, 1, 8, 15, 22,...}. Then the correct option is A.
What is an arithmetic sequence?Arithmetic succession or arithmetic sequential is a numerical series in which the difference between subsequent terms is uniform.
Let's check all the options, then we have
A. {-6, 1, 8, 15, 22,...}, then the common difference is given as,
d = 1 - (-6) = 8 - 1 =
d = 7 = 7
B. {64, 32, 16, 8, 4,...}, then the common difference is given as,
d = 32 - 64 = 16 - 32
d = -32 ≠ - 16
C. {1, 2, 4, 8, 16,...}, then the common difference is given as,
d = 1 - 2 = 2 - 4
d = - 1 ≠ - 2
D. {1, 3, 6, 10, 15,...}, then the common difference is given as,
d = 1 - 3 = 3 - 6
d = - 2 ≠ - 3
The sequence that represents the arithmetic sequence will be {-6, 1, 8, 15, 22,...}. Then the correct option is A.
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Which of the following shows independent events?
Select the correct answer below:
drawing a jack and then drawing a 7 without replacement from a standard deck of cards
drawing a 10 and then drawing a 9 without replacement from a standard deck of cards
rolling two 4's from two rolls of a standard die
rolling a sum less than 3 from two rolls of a standard die and rolling a 1 for the second throw
Answer:
Step-by-step explanation:
calculate the measure of x
The measure of x use Pythagorean Theorem
1. x= 15
x= 26x= 7.6About Pythagorean TheoremTh Pythagorean theorem only applies to right triangles. This is the same as explained in the Pythagorean Theorem Module which states that for each right triangle, the area of the square on the hypotenuse is equal to the sum of the areas of the squares on the other side or the sides of the right angle.
Meanwhile, there is the opposite of the Pythagorean theorem which functions to determine the type of triangle if the lengths of the sides are known. The types of triangles include:
A right triangle is a triangle in which one of the angles is a right angle or equal to 90 degrees. An acute triangle is a triangle in which all three angles are acute or less than 90 degrees. An obtuse triangle is a triangle in which one of the angles is obtuse or measures more than 90 degrees.Learn more about Pythagorean theorem at
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hello teacher can u help me with this
Please help me thank you so much!
Answer:
It's the second one because -3x3-5 equals -14
Question in image, PLEASE HELP
The value of ST = 10 for the given rectangle.
What is a rectangle?A quadrilateral with parallel sides that are equal to one another and four equal vertices is known as a rectangle. It is also known as an equiangular quadrilateral for this reason.
Rectangles can also be referred to as parallelograms because their opposite sides are equal and parallel.
In the given triangle PQRS, the diagonals bisect each other, that is they divide each other in equal halves.
Thus. PT = TR
Since, PT = 10 we have TR = 10,
The diagonals of the rectangle are equal, hence we also have:
TR = ST
Since, the value of TR = 10, then the value of ST = 10.
Hence, the value of ST = 10 for the given rectangle.
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The area of the circular base of a cone is 16π cm², and the slant height of the cone is 4 times the radius of the cone.
What is the approximate lateral area of the cone?
The approximate lateral area of the cone is equal to 200.96 cm².
How to calculate the lateral area of the cone?Mathematically, the lateral area of a cone can be calculated by using this mathematical expression:
Lateral surface area of a cone, LSA = πrl or πr√(r^2 + h^2)
Where
l represents the slant height of the cone.r represents the radius of the cone.h represents the height of the cone.How to calculate the area of a circle?Mathematically, the area of a circle can be calculated by using this formula:
Area of a circular base = πr²
16π = πr²
Radius, r = √16
Radius, r = 4 cm.
Substituting the given parameters into the lateral area of a cone formula, we have the following;
Lateral surface area of a cone, LSA = πrl = πr4(r)
Lateral surface area of a cone, LSA = 3.14 × 4 × 16
Lateral surface area of a cone, LSA = 200.96 cm².
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Answer:
201 beause you are rounding to the nearest whole number
Step-by-step explanation:
Sam is moving bags of soil from a loading dock into a storeroom. The topsoil
weighs 40 pounds per bag, and the mulch weighs 20 pounds per bag. The
cart Sam uses to move the bags can only carry up to 480 pounds.
Which graph represents the number of topsoil bags and mulch bags that Sam
can move in a single trip? Graphed
The inequality that can be used to represent the number of topsoil and mulch Sam can carry is, 40x + 20y ≤ 480
And, The graph which represents the number of topsoil bags and mulch bags that Sam can move in a single trip is shown in figure.
What is Inequality?A relation by which we can compare two or more mathematical expression is called an inequality.
Given that:
Weight of top soil = 40 pounds
Weight of mulch = 20 pounds
Total weight Sam can carry = 480 pounds
Now, Let number of bags of top but soil = x
And, The number of weight of mulch = y
Hence, The inequality is,
⇒ 40x + 20y ≤ 480
Therefore, the inequality that can be used to represent the number of topsoil and mulch Sam can carry is 40x + 20y ≤ 480
And, The graph which represents the number of topsoil bags and mulch bags that Sam can move in a single trip is shown in figure.
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A teacher is placing a border around the classroom bulletin board which measures 28 7/8 inches long by 22 one fourths inches wide what is the length of the border
On solving the provided question we cans ay that area of bulletin board would be 22*10 = 220 cm sq.
What is area?The size of an area on a surface can be expressed as an area. The area of an open surface or the boundary of a three-dimensional object is referred to as the surface area, whereas the area of a planar region or planar region refers to the area of a form or planar layer. The total amount of space filled by a planar (2-D) surface or shape of an object is known as its area. Draw a square on a piece of paper using a pencil. a character with two dimensions. The area of a shape on paper is the space it takes up. Imagine that the square is composed of more compact unit squares.
This question depends on how thick you would want the border to be.
One simple way to find this is finding the perimeter of the bulletin board. You can do this by using the formula: 2(L) + 2(W)
(L) Represents Length
(W) Represents Width
In this situation, it would be 2(4) + 2(6)
that would turn into 8 + 12
which turns into 20 feet.
area of bulletin board would be 22*10 = 220 cm sq.
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I'll give you brainliest and extra points if it's right! :)
Answer:
see explanation
Step-by-step explanation:
given the ratio of 2 similar figures is [tex]\frac{a}{b}[/tex]
then the ratio of perimeters is also [tex]\frac{a}{b}[/tex]
and the ratio of areas is ( [tex]\frac{a}{b}[/tex] )² = [tex]\frac{a^2}{b^2}[/tex]
the ratio of side lengths, yellow to green is
[tex]\frac{36}{60}[/tex] = [tex]\frac{3}{5}[/tex] ( cancelling 36 and 60 by 12 )
the ratio of perimeters is equal to ratio of sides, that is [tex]\frac{3}{5}[/tex]
the ratio of areas = [tex]\frac{3^2}{5^2}[/tex] = [tex]\frac{9}{25}[/tex]
let x be the area of the green figure, then by proportion
[tex]\frac{45}{x}[/tex] = [tex]\frac{9}{25}[/tex] ( cross- multiply )
9x = 1125 ( divide both sides by 9 )
x = 125
that is the area of the green figure is 125 units²
x=√40-3x can someone help solve
The solution of the given equation is x= 5 and x = -8.
What is quadratic equation?An algebraic equation of the second degree in x is a quadratic equation. First, there must be a term other than zero in the coefficient of x^2 for an equation to be a quadratic equation. The x^2 term is written first when constructing a quadratic equation in standard form, then the x term, and finally the constant term.
The given equation is x = √40 - 3x.
Square on both sides of the equation:
x^2 = (√40 - 3x)²
x² = 40 - 3x
Regroup to one side of the equation:
x² + 3x - 40 = 0
x² + 8x - 5x - 40 = 0
x(x + 8) - 5 (x+8) = 0
(x - 5)(x + 8) = 0
Equate each term to 0:
x - 5 = 0
x= 5
x+ 8 = 0
x = -8
Hence, the solution of the given equation is x= 5 and x = -8.
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