On a Spanish test, Elini answered 17 problems correctly and scored 68%. How many problems were on the test
Answer: there is 25 questions
Step-by-step explanation:
Multiply 17 x 100 = 1700 then divide 1700/68=25
What's X?
Please help me and explain
Answer:
60 degree
Step-by-step explanation:
E,A,D is a straight line .
Straight line=180 degree
100+20=120 -180=60
therefore X=60
Which exponential equation is equivalent to the logarithmic equation below?log 784 = aA.10a = 784B.78410 = aC.784a = 10D.a10 = 784
Given the Logarithmic Expression:
\(log784=a\)You need to remember that, by definition, a Logarithmic Expression that has this form:
\(log_bm=n\)can be rewritten in this Exponential Form:
\(b^n=m\)In this case, you can identify that the logarithm has base 10.
Then, you know that:
\(\begin{gathered} b=10 \\ m=784 \\ n=a \end{gathered}\)Therefore, you can rewrite the expression in this form:
\(10^a=784\)Hence, the answer is: Option A.
Find the equation of the line that passes through the point (3,-5) and has a slope of -1
A. y - 5 = -1 (x + 3)
B. y + 3 = -1 (x + 5)
C. y - 3 = - (x - 5)
D. y + 5 = - (x - 3)
Answer:
excfvgbhnj
Step-by-step explanation:
D. y + 5 = - (x - 5 )
Assume the distribution of IQ scores for adults can be modeled with a normal distribution with a mean score of 100 points and a standard deviation of 10 points. 30% of adults will have an IQ score higher than what value?
Step-by-step explanation:
Use z-score table to find the z-score that corresponds to .7000 ( 70%)
approx .525 s.d. above the mean
.525 * 10 = 5.25 points above 100 = 105.25
Write 15% as a fraction
(Okay so I wasn’t paying attention in class just like every kid so.. yeah.. help?)
15% = __ / 100 = __ / __
So, 15% =__
Answer:
it would be 15/100 you can simplify it to 3/20
The equations of three lines are given below.
Line 1: y=-3x-1
Line 2: 6x+2y=8
Line 3: y=3x+8
For each pair of lines, determine whether they are parallel, perpendicular, or neither
Line 1 and Line 2: O Parallel O Perpendicular
Neither
X
Line 1 and Line 3:
O Parallel O Perpendicular
Neither
Line 2 and Line 3: O Parallel O Perpendicular
Neither
Step-by-step explanation:
line 1 and 2 : parallel
as line 2 is actually
6x + 2y = 8
2y = -6x + 8
y = -3x + 4
so, they have the same slope (factor of x).
line 1 and 3 : neither
the slopes -3 and 3 are not parallel not perpendicular (90°).
line 2 and 3 : neither
as line 2 is parallel to line 1, it has the same relationship to line 3 as line 1.
Use the relationships between the angles to find the value of x.
Step-by-step explanation:
x+15=120°{corresponding angle}
x=120-15
x=105°
stay safe healthy and happy.Answer:
\(x=87\)°
Step-by-step explanation:
\(corresponding ~angles ~are~congruent\)
\(x+15=102\\-15~~~~~-15\)
\(102-15=\)
\(x=87\)°
---------------------
hope it helps....
have a great day!!
i only have 10 min :( please someone answer what type of triangle it is
Answer:
The answer would be 60 first of all.
Step-by-step explanation:
Ok, this would be an Scalene triangle.
Answer:
Looks like a scalene triangle.
Step-by-step explanation:
If angle C is 70°, angle B2 is 60° Then angle D will be 50°. So it’s a Scalene triangle.
In how many ways can ten people be seated in a row so that a certain two of them are not next to each other?
There are 3,338,496 ways the ten people can be seated in a row so that a certain two of them are not next to each other.
There are two ways to approach this problem. The first approach uses the inclusion-exclusion principle, while the second uses permutations with restrictions. We will use the first approach because it is shorter and easier to follow.
First, We will count the number of ways the ten people can be seated in a row.
This is simply 10! = 3,628,800 because there are ten choices for the first seat, nine choices for the second seat, and so on, until there are only two choices for the last seat.
There are nine choices for the two people to sit together, and then 8! ways to arrange the other eight people and the pair.
Therefore, there are 9 × 8! = 290,304 ways the ten people can be seated in a row with the two specified people sitting next to each other.
Finally, we will subtract the number of ways the ten people can be seated in a row with the two specified people sitting next to each other from the total number of ways the ten people can be seated in a row.
This gives us:
= 10! − 9 × 8!
= 3,628,800 − 290,304
= 3,338,496
Therefore, there are 3,338,496 ways the ten people can be seated in a row so that a certain two of them are not next to each other.
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A restaurant at the food court in a mall is offering a lunch special. The table shows the relationship between the number of side dishes and the total cost of the special.
Restaurant
Number of Side Dishes Total Cost
2 $6.75
4 $8.25
5 $9.00
8 $11.25
Which of the following graphs shows the relationship given in the table?
graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 6 and 75 hundredths through the point 3 comma 9
graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 5 and 25 hundredths through the point 5 comma 9
graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 6 and 75 hundredths through the point 1 comma 8 and 25 hundredths
graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 5 and 75 hundredths through the point 1 comma 7 and 25 hundredths
The correct answer is graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 6 and 75 hundredths through the point 3 comma 9.
What is axis?Axis refers to the number of dimensions in a graph, chart, or plot. It is an imaginary line that is used to measure and plot values in a graph. In a line graph, the x-axis is the horizontal line and the y-axis is the vertical line.
The first graph shows a relationship between the number of side dishes and the total cost of the special that does not match the data given in the table.
The second graph does not reflect the data given in the table, as the total cost of the special increases from $5.25 to $9.00 when the number of side dishes increases from 0 to 5.
The third graph also does not reflect the data given in the table, as the total cost of the special increases from $6.75 to $8.25 when the number of side dishes increases from 0 to 4.
The fourth graph also does not reflect the data given in the table, as the total cost of the special increases from $5.75 to $7.25 when the number of side dishes increases from 0 to 1.
Therefore, the correct answer is mentioned above. This graph accurately reflects the relationship between the number of side dishes and the total cost of the special.
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The correct answer is "graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0,6 and 75 hundredths through the point 3,9".
What is axis?Axis refers to the number of dimensions in a graph, chart, or plot. It is an imaginary line that is used to measure and plot values in a graph.
This graph correctly illustrates the relationship between the number of side dishes and the total cost of the special as shown in the table.
The line starts at 0 side dishes and $6.75
and ends at 4 side dishes and $8.25, both of which are in the table.
The graph accurately reflects this by having a line that starts at 2 side dishes and $6.75 and ends at 5 side dishes and $9.00.
This shows that as the number of side dishes increases, the cost also increases.
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the faucet can fill the tub in 15 minutes. the drain can empty the tub in 20 minutes. how long will it take to fill the tub with drain open?
Using Tap working problem solving,
when faucet and drain working together, the time to fill up the tub is 60 minutes.
We have the following information about question,
The time taken by faucet to fill up the tub
= 15 minutes
The time taken by drain to empty the tub
= 20 minutes
we have to calculate the time in which the tub is fully fill the tube with drain open.
Rate of fill up the tub by faucet = 1/15 i.e 1/15 th of tub in one minute .
Rate of empty the tub by drain = 1/20 i.e 1/20 th of tub in one minute.
In one minute both are working together and will fill the tub = 1/15 - 1/20 = 1/60 i.e 1/60 th of tub
Since, it takes one minute to fill 1/60th of the tub and it will take 60 minutes to fill the tub.
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how solve these problem plssssss
Answer:
for the second question , all you have to do is substitute , the first point plotted is x and the second point is b , ploy those points in the equation and remember that to find x we make y= 0 and to find y we make x =0
Solve for x.ܐܐܢ2x + 20 2x - 4+x == [?]
ANSWER
x = 41
EXPLANATION
The given angles are supplementary, so their measures add up to 180°,
\((2x+20)+(2x-4)=180\)Now we have an equation for x. First, add like terms,
\(\begin{gathered} (2x+2x)+(20-4)=180 \\ 4x+16=180 \end{gathered}\)Then subtract 16 from both sides of the equation,
\(\begin{gathered} 4x+16-16=180-16 \\ 4x=164 \end{gathered}\)And finally, divide both sides by 4,
\(\begin{gathered} \frac{4x}{4}=\frac{164}{4} \\ x=41 \end{gathered}\)Hence, x = 41.
The net of a cuboid is shown below.
Work out the surface area of the cuboid.
5 cm
2 cm
2 cm
4 cm
Not drawn accurately
The surface area of the cuboid is 76 cm²
What is surface area of cuboid?The surface area of a three-dimensional object is the sum of the area of all the outer surfaces, it is also measured in square units.
A cuboid is a solid shape or a three-dimensional shape.
The surface area of a cuboid is expressed as;
SA = 2(lb + bh + lh)
here,
l = 5cm
b = 4cm
h = 2cm
SA = 2( 5×2 + 5×4 + 4×2)
SA = 2( 10 +20 +8)
SA = 2( 38)
SA = 76 cm²
Therefore the surface area of the cuboid is 76 cm².
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3 tractor drivers working on aprivate form together ploughed 12.4 hectors of a land in a shift,the first driver ploughed half of the second and the second ploughed 2.4 hector more than the third find the amount of hector ploughed by the second driver?
On the social and economic structure of the United States, the agricultural tractor had a significant influence.
What role does mathematics have in farming?The daily operations of a farm involve the use of scientific and mathematical knowledge. For instance, farmers utilise their mathematical prowess to calculate how much seed they will need, how much it will cost to plant their crop based on the amount of arable land they have, how much equipment or tools they would need to buy, and how much they will need to pay for various purchases.On the social and economic structure of the United States, the agricultural tractor had a significant influence. Millions of farm owners, unpaid family labourers, and farm hands were made available as a result of mechanization's increased productivity of agricultural labour.To learn more about mathematics refer to:
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The third driver ploughed 2.3 hectors of land, the second driver ploughed 2.3 + 2.4 = 4.7 hectors of land, and the first driver ploughed (4.7)/2 = 2.35 hectors of land.
How to find the amount of hector ploughed by the second driver?Let's call the amount of land ploughed by the third driver "x".
The second driver ploughed 2.4 more than the third driver, so they ploughed x + 2.4.
The first driver ploughed half of what the second driver ploughed, so they ploughed (x + 2.4)/2.
In total, the three drivers ploughed x + (x + 2.4) + (x + 2.4)/2 = 3.5x + 4.2 hectors of land.
We know that the total amount of land ploughed is 12.4 hectors, so we can set up an equation:
3.5x + 4.2 = 12.4
Solving for x:
3.5x = 8.2
x = 2.3
So the third driver ploughed 2.3 hectors of land, the second driver ploughed 2.3 + 2.4 = 4.7 hectors of land, and the first driver ploughed (4.7)/2 = 2.35 hectors of land.
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Maddi needs to rent a car.the rental costs$13 per hour Plus a processing fee of 100$. Which is the independent variable costs or time.
Answer:
The independent variable is time.
Step-by-step explanation:
(Y=mx+b format)
Maddi's rental for the car costs $13 per hour so the x variable would be the hours (x=hour). This would be a Y= mx + b equation and in this case, Y=13x + 100. Independent means (mathmatically) a variable that does not depend on any other variable for its value. The costs is always changing being dependent on the time portion. The time isn't dependent on anything. Thus, the independent variable is time.
(If you need a starting point which is b, it would be the $100 as the processing fee.)
please help me it is due today
Answer:
B
Step-by-step explanation:
A give me 2'zero
b give me 9'zero
c give 8'zero
d gives 5 zero
e give me 4'zero
for example it give me two zero it 100
or if five 5 zero it 100000
hope this helps
solve for c
c + 5 is less than or equal to -12 or c + 3 > 5
Review the four points shown on the polar coordinate system. Which point Represents (3,-5π/3)
a. Point A
b. Point B
c. Point C
d. Point D
Answer:
its is a
Step-by-step explanation:
EDGE 2021
Point A Represents (3,-5π/3). Option A is correct.
What is a polar coordinate?A pair of coordinates that identify a point's location in a plane; the first is the distance (r) from the point to the origin and the second is the angle (Θ) that this line makes with a fixed-line.
Point A Represents (3,-5π/3).
The radius of all the points from the center of the circle is 3 units.
The angle in the polar coordinate in the clockwise direction is taken as negative and the anticlockwise direction is positive.
The given angle is;
-5π/3
In order to get the position of the angle from the x-axis the angle should be added by 2π as;
Θ = 2π-5π/3
Θ = π/3
The angle is calculated clockwise. From the digrame point, A represents the angle π/3.
Point A Represents (3,-5π/3).
Hence, option A is correct.
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The current population of a small town is 5914 people. It is believed that town's population is tripling every 11 years. Approximate the population of the town 2 years from now. residents (round to nearest whole number)
The approximate population of the town 2 years from now, based on the assumption that the population is tripling every 11 years, is 17742 residents (rounded to the nearest whole number).
To calculate the population 2 years from now, we need to determine the number of 11-year periods that have passed in those 2 years.
Since each 11-year period results in the population tripling, we divide the 2-year time frame by 11 to find the number of periods.
2 years / 11 years = 0.1818
This calculation tells us that approximately 0.1818 of an 11-year period has passed in the 2-year time frame.
Since we cannot have a fraction of a population, we round this value to the nearest whole number, which is 0.
Therefore, the population remains the same after 2 years. Hence, the approximate population of the town 2 years from now is the same as the current population, which is 5914 residents.
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What is the length of the diagonal from P to Q?
Answer:
The length of the diagonal from P to Q is
\( \sqrt{ {9}^{2} + {12}^{2} + {8}^{2} } = \sqrt{289} = 17\)
TAREA
Considere un sistema coordenado que contiene el punto A(2 ; -4). Encuentre el punto B si los puntos A y
B se encuentran a la misma distancia con respecto a:
a. Eje Y
b. Eje X
c. Origen
Answer:
Don't know
Step-by-step explanation:
Translate it into English
H= 51.34
Please work out the volume of this.
The volume of the prism is
70 cm³How to find the volume of the prismThe volume of the prism is solved by the formula
= area of triangle * depth
Area of the triangle
= 1/2 base * height
base = p = cos 51.34 * √41 = 4
height = q = sin 51.34 * √41 = 5
= 1/2 * 4 * 5
= 10
volume of the prism
= area of triangle * depth
= 10 * 7
= 70 cm³
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Noise in a quiet room is 500 times as intense as the threshold of sound. What is the decibel measurement for the quiet room? 20 decibels 28 decibels 200 decibels 280 decibels.
The intensity and the threshold of the noise are illustrations of rates
The decibel measurement of a quiet room is 28
How to determine the decibel measurementFrom the graph that completes the question, we have the following point
(Decibel, Intense) = (28,500)
This means that, the decibel measurement is 28
Hence, the decibel measurement of a quiet room is 28
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Answer:
B or 28
Step-by-step explanation:
edge 22
Bearing a to b is 280 what is bearing b to A
Answer:
please see photo attached for detailed analysis.
The perimeter of a 30-60 degree right triangle is 70. 98 inches. If the length of the hypotenuse is 30 inches, what is the length of the longest side?
The length of the shorter side is approximately 23.66 inches, and the length of the longer side is twice as long, or approximately 47.32 inches.
To find the length of the longest side, which is the hypotenuse, we're also given that it's 30 inches long.
Now, let's use what we know about the relationships between the sides of a 30-60 degree right triangle to find the length of the other two sides.
First, we know that the side opposite the 60 degree angle is always twice as long as the side opposite the 30 degree angle. So let's call the length of the shorter side (opposite the 30 degree angle) "x". Then the length of the longer side (opposite the 60 degree angle) is 2x.
Next, we can use the Pythagorean theorem to relate the lengths of the sides. In a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides. So we have:
30² = x² + (2x)²
Simplifying this equation, we get:
900 = 5x²
Dividing both sides by 5, we get:
x² = 180
Taking the square root of both sides, we get:
x = √180
Now, we know that the perimeter of the triangle is the sum of the lengths of all three sides. So we have:
70.98 = x + 2x + 30
Simplifying this equation, we get:
100.98 = 3x + 30
Subtracting 30 from both sides, we get:
70.98 = 3x
Dividing both sides by 3, we get:
x = 23.66
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• we have two concentric circles. a chord of the larger circle is tangent to the smaller circle and has length 8. what’s the area of the annulus–the region between the two circles?
The Area of annulus - the region between the two circle is 50.26cm²
According to the question,
The length of chord of the large circle which is tangent to the small circle : AB = 8cm
Le the radius of large circle "R" and radius of smaller circle "r"
AB is a tangent to the smaller circle
AM = 8/2
=> AM = 4cm
In ΔOAM,
Using Pythagoras theorem ,
OA² = OM² + AM²
=> R² = r² + (4)²
=> R² - r² = 16
So, the area of annulus = π(R² - r²)
=> 16π (putting π = 3.14)
=> 50.26cm² is required area
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is -5.5645 repeating irrational
Answer:
This number is neither repeating or irrational.
Step-by-step explanation:
An irrational number is a number with a never-ending decimal that does NOT repeat. This number would be considered rational.
Which number is equivalent to 3^4}{3^{2
Answer:
i get 81 correct me if im wrong
Step-by-step explanation:
3^4 / 3^2
=3^4-2
=3^2
=9