Answer: 60 kids, 180 adults
Step-by-step explanation:
Let x be the number of children and y be the number of adults eating.
If they have 240 people eating then x+y=240.
If they have to fundraise 1200 then 2x+6y=1200.
Solving the system of equations, we can multiply the first equation by 2 to get 2x+2y=480. Then subtract the two equations and get -4y=-720, so y=180. Substitute y=180 back in to get x=60.
Hope that helped,
-sirswagger21
I think this is the last thing I need help with, but I REALLY need this done to raise my grade!!! I'll mark brainliest!!
Answer:
Step-by-step explanation: there you go
Simplify (2y-5)(2y+5)
Answer:-10
Step-by-step explanation:
Answer: 4y^2-25
Step-by-step explanation:
SCHOOL LUNCH In 2015, Ed spent $800 buying lunches. In 2017, he spent $300 buying lunches. What was the rate of change from 2015 to
2017? Plz help asap plz
The rate of change from 2015 to 2017 is -$250 per year.
Given that,
In 2015, Ed spent $800In 2017, Ed spent $300We need to find the rate of change.According to the scenario, computation of the given data are as follows,
Total change = $300 - $800
= -$500
Total years from 2015 to 2017 = 2 years
So rate of change = -$500 \(\div\) 2
= - $250
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a new car is purchased for 18500 dollars. the value of the car depreciates at 8% per year. to the nearest tenth of a year, how long will it be until the value of the car is 9100 dollars?
Answer:
8.5 years
Step-by-step explanation:
You want to know the number of years until 18500 depreciates to 9100 at the rate of 8% per year.
ValueThe depreciation rate given as a percentage of current value tells you the depreciation is exponential. The formula will be ...
value = (initial value) × (1 - (depreciation rate))^t
where the rate is "per year" and t is in years.
Applicationvalue = 18500·(1 -0.08)^t
9100 = 18500·0.92^t . . . . fill in the value of interest
9100/18500 = 0.92^t . . . . divide by 18500
log(91/185) = t·log(0.92) . . . . take logarithms
t = log(91/185)/log(0.92) ≈ -0.3081/-0.03621 ≈ 8.509
It will be about 8.5 years until the value is $9100.
__
Additional comment
The graph shows the solution to ...
18500·0.92^t -9100 = 0
We find it fairly easy to locate an x-intercept, so we wrote the equation in the forms that makes the x-intercept the solution.
The office manager of First Tech Support borrowed $25,000 to purchase new computers for employees. The bank charges 6 percent interest for 4 years. How much interest will the company pay in all?
Given:
Amount borrowed (P)= $25000
Rate of interest (r)= 6%
Time (t)= 4 years.
To find:
The total interest the company pay in all.
Solution:
We know that,
\(A=P(1+r)^t\)
where, A is amount, P is principal, r is rate of interest and t is time period.
\(A=25000(1+\dfrac{6}{100})^4\)
\(A=25000(1.06)^4\)
\(A=25000(1.26247696)\)
\(A=31561.924 \)
Now,
\(I=A-P\)
\(I=31561.924-25000\)
\(I=6561.924\)
Therefore, the total interest is $6561.924.
Answer: $6,000
Step-by-step explanation:
Which translation will change figure ABC to figure A'B'C'?
A coordinate plane is shown. Figure ABC is composed of coordinates A, negative 4 comma negative 1, B, negative 1 comma negative 1, C, and negative 2 comma negative 3. Figure A prime, B prime, and C prime is composed of coordinates A prime, 0 comma 2, B prime, 3 comma 2, C prime, 2 comma 0.3 units right and 3 units up
4 units right and 3 units up
4 units right and 4 units up
4 units left and 3 units down
please help!!!!
Answer:
the answer is c
Step-by-step explanation:
im dumb don't listen but I know you will figure it out if you use you brain and you notes ; )
when edna's phone is fully charged, it can operate for up to 18 hours before running out of battery. it has been 6 hours since edna's phone was fully charged. let x represent how many more hours edna's phone can operate without running out of battery. which inequality describes the problem?
The required inequality describes the problem is x ≤ 12.
What is meant by inequality?A relationship that compares two numbers or other mathematical expressions in an unequal way is known as an inequality in mathematics. On the number line, it is most frequently used to compare the sizes of two numbers.
The term "inequality" in mathematics refers to a relationship between two expressions or values that is not equal to each other. Inequality originates from an imbalance, thus.
According to question:We have,
Edna's phone is fully charged, it can operate for up to 18 hours before running out of battery.
let x represent how many more hours edna's phone can operate without running out of battery.
Then
x + 6 ≤ 18
x ≤ 12
Thus,required inequality is x ≤ 12.
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Calculate Ocean Freight charges in Canadian dollar
We have a shipment of two different cargos:
2 skids of Apple, 100 cm x 100 cm x 150 cm, 400 kg each
3 boxes of Orange, 35" x 25" x 30", 100 kg each
Ocean freight rate to Mumbai: $250 USD / m3
1 USDD= 1.25 CND
1 m3=1000 kg
The ocean freight charges for the given shipment in Canadian dollars would be approximately 603.25 CAD.
To calculate the ocean freight charges in Canadian dollars for the given shipment, we need to follow these steps:
Step 1: Calculate the volume and weight of each cargo item:
For the skids of Apple:
Volume = 100 cm x 100 cm x 150 cm
= 1,500,000 cm³
= 1.5 m³
Weight = 400 kg each x 2
= 800 kg
For the boxes of Orange:
Volume = 35" x 25" x 30"
= 26,250 cubic inches
= 0.4292 m³
Weight = 100 kg each x 3
= 300 kg
Step 2: Calculate the total volume and weight of the shipment:
Total Volume = Volume of Apples + Volume of Oranges
= 1.5 m³ + 0.4292 m³
= 1.9292 m³
Total Weight = Weight of Apples + Weight of Oranges
= 800 kg + 300 kg
= 1,100 kg
Step 3: Convert the ocean freight rate to Canadian dollars:
Ocean freight rate to Mumbai = $250 USD / m³
Conversion rate: 1 USD = 1.25 CAD (Canadian dollars)
Freight rate in CAD = $250 USD/m³ x 1.25 CAD/USD
= 312.5 CAD/m³
Step 4: Calculate the freight charges for the shipment:
Freight charges = Total Volume x Freight rate in CAD
Freight charges = 1.9292 m³ x 312.5 CAD/m³
= 603.25 CAD
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write the following expression without negative exponents and without parentheses (-9x)^-2
The value of the expression is 1/(9x)^2
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
(-9x)^-2
We can write the expression without negative exponents by using a fraction with a positive exponent:
(-9x)^-2 = 1/(-9x)^2
And without parentheses, this expression becomes:
1/(9x)^2
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Suppose that sin(θ)=1/8. What cos(θ)=_________
Given that sin(θ) = 1/8, we can determine cos(θ) using the Pythagorean identity and trigonometric ratios. It is found that cos(θ) = √(1 - sin²(θ)) = √(1 - (1/8)²) = √(1 - 1/64) = √(63/64) = √63/8.
To find cos(θ) given sin(θ) = 1/8, we can utilize the Pythagorean identity, which states that sin²(θ) + cos²(θ) = 1.
Rearranging this equation, we have cos²(θ) = 1 - sin²(θ).
Substituting sin(θ) = 1/8, we get cos²(θ) = 1 - (1/8)² = 1 - 1/64 = 63/64.
Taking the square root of both sides, we have cos(θ) = √(63/64).
Simplifying the expression further, we can rewrite the square root of 63/64 as √(63)/√(64).
The square root of 64 is 8, so the final result is √63/8.
Therefore, cos(θ) = √63/8 when sin(θ) = 1/8.
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How many choices are in the sample space of drawing a club out of a deck of 52 cards?
A. 13 choices
B. 52 choices
C. 26 choices
D. 12 choices
Answer:
A. 13
Step-by-step explanation:
Help me on this please I’d appreciate it
Answer:
y=3/10x
Hope that helped
Give brainiest answer as a thanks! :)
\(y = \frac{3}{10} x\)
um multiplication sign means of so 3/10 * means 3/10 of so yeah
once you have done the calculations above, answer the following questions: points 1. in several sentences, explain the right triangle drawings you need to model the shadow scenarios. make sure it answers the following: a. what does each side length signify? in particular explain what does the hypotenuse in your drawing signify in the real world? b. explain why the angle you choose is the angle of elevation of the sun. / 8 / 4 2. from your measurements, when was your shadow the longest? what was the angle of elevation of the sun at this time? / 4 3. from your measurements, when was your shadow the shortest? what was the angle of elevation of the sun at this time? / 4 4. during what time of day do you think the shadow will be longest? explain why using your knowledge of trigonometric ratios. make sure you mention the angle of elevation, your height and a trigonometric ratio that will help explain why the shadow is the longest at this time of day. / 10 5. during what time of day do you think the shadow you cast will be shortest? explain why using your knowledge of trigonometric ratios and hint in question
By following the above procedure and having done the calculations the following questions can be answered:
According to ground level, each triangle represents the elevation of the sun. The height, for instance, corresponds to my height. The length also depicts my shadow. The line of sight is represented by the other angle. The angle of elevation between the sun and the surface is the same as the angle of elevation between my shadow and my height.My longest measurement was at 9:10 am, when my shadow measured 3.77m and the angle of elevation was 26º.My shortest measurement was at 12:10 pm, when my shadow measured 1.86m and the angle of elevation was 44ºBetween 6 and 7 o'clock in the evening, when the sun is sinking, is the ideal time to measure a lengthy shadow. The sun is hitting you from a horizontal angle at this time, allowing your shadow to cast a longer shadow.When the sun is at its highest point in the sky, around 11 a.m., is the perfect moment to measure a short shadow. The light is shining on you directly now, shortening your shadow, making this the ideal time.Learn more about Shadow cast :
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The graph shows percentages of sales made by various divisions of a company in one year. What are the angles formed by the segments for each division? What are the missing percentages? Explain how you were able to determine each percentage.
Answer:
Division C = 9%
Division E = 10%
Step-by-step explanation:
From the pie chart attached,
Let the missing percentage of division C and E are c% and e% respectively.
Since, division B + division C + division D = 50%
[Divisions on one half of the circle]
23% + c% + 18% = 50%
41% + c% = 50%
c = 50 - 41
c = 9%
Similarly, division A + division F + division E = 50%
27 + 13 + e = 50
40 + e = 50
e = 10%
Angle Pairs (Lines cut by a Transversal)
What are pair relation exists between angle 7 and angle 4? Use the picture as a reference.
_ Alternate Interior Angles
_ Alternate Exterior Angles
_ Same-Side Interior Angles
_ Same-Side Exterior Angles
_ Corresponding Angles
Answer:
same side interior angles
3. What are pair relation exists between angle 7 and angle 4?
Corresponding angles.Explanation :
A pair of angles in which one arm of each angle of a pair is on the same of the transversal and the other arm of the angles of the pair are directed in the same direction are known as Corresponding angles.⠀
Un camión traslada 12 vehículos. Algunos son autos y otros son camionetas. Cada auto tiene una masa de 2 toneladas y cada camioneta de 3 toneladas. En total, el camión lleva una carga de 33 toneladas.
Escribe un sistema de ecuaciones que permita calcular cuántos vehículos de cada tipo traslada el camión. Usa a para representar la cantidad de autos y c para representar la cantidad de camionetas que traslada el camión.
El sistema de ecuaciones queda descrita por las siguientes expresiones:
\(a+c = 12\)
\(2\cdot a + 3\cdot c = 33\)
Donde \(a\) y \(c\) son las cantidades de autos y camionetas.
El enunciado es equivalente a un sistema de dos ecuaciones lineales con dos incógnitas. Una ecuación para la cantidad de vehículos trasladados por el camión y otra ecuación para la masa total trasladada:
\(a+c = 12\) (1)
\(2\cdot a + 3\cdot c = 33\) (2)
Donde:
\(a\) - Cantidad de autos.\(c\) - Cantidad de camionetas.El sistema de ecuaciones queda descrita por las siguientes expresiones:
\(a+c = 12\)
\(2\cdot a + 3\cdot c = 33\)
Donde \(a\) y \(c\) son las cantidades de autos y camionetas.
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Solve the system of linear equations by elimination.
−2x+6y=−10
4x+3y=5
Answer: 2x+3y=5,4x+6y=10
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-Lilly Ketchmen
Answer:
x = 2 and y = -1
Step-by-step explanation:
simplify the first equation by dividing each term by -2
x - 3y = 5
now you can add this to 4x + 3y = 5 and the 'y-values' will be eliminated and you will have:
5x = 10
x = 2
substitute '2' for 'x' to solve for 'y':
-2(2) + 6y = -10
-4 + 6y = -10
6y = -6
y = -1
Find the exact values of x and y.
Answer:
x = 13 unitsy = 18.4 units
Step-by-step explanation:
from the angles we understand that it is an isosceles right triangle, therefore x is also 13, we find y with the Pythagorean theorem
y = √(13² + 13²)
y = √(169 + 169)
y = √338
y = 18.38 (you can round to 18.4)
Answer:
x = 13 , y = 18.38
Step-by-step explanation:
p.s. There is two ways to answer it.
In Triangle,
if there is a right angle, other angles are the same.
It the angles are the same, the two sides are the same.
So, x = 13
By the Converse of the Pythagorean Theorem , these values make the triangle a right triangle.
(hypotenuse)² = (side of right triangle)² + (other side of right triangle)²
(hypotenuse)² = 13² + 13²
(hypotenuse)² = 169 + 169
(hypotenuse)² = 338
hypotenuse = 18.38
so y = 18.38
Evaluate the expression. 7⋅4+6−12÷4
Answer:
27+6-2=31
Step-by-step explanation:
what is his average speed for end the entire trip 280 miles
?
Answer:
20mph
Step-by-step explanation:
because when you divide the 280 it goes by 20 mph to get to 280 miles by quarters but in 20s
I NEED AN ANSWER ASAP PLEASE
Step-by-step explanation:
the correct answer is option a 6a-7
Find the area of this shape
Answer:
14
Step-by-step explanation:
Pls help! The sum of the digits of a certain two-digit number is 5. When you reverse its digits you
decrease the number by 9. What is the number?
answer: 32
Consider 2 digit numbers whose sum is 5
5
x
0
→
5
+
0
=
5
4
x
1
→
4
+
1
=
5
3
x
2
→
3
+
2
=
5
Now reverse the digits and compare with original 2 digit number. Starting with 4 1
4
x
1
→
1
x
4
and
41
−
14
=
27
≠
9
3
x
2
→
2
x
3
and
32
−
23
=
9
⇒
the number is
32
This equation has one solution.5(x – 1) + 3x = 7(x + 1)What is the solution?
The solution of the given equation is x = 12. The solution is the value, that satisfies the given equation.
What is a solution for an equation?A solution is a value, that satisfies the equation. A solution is also said to be a root for the equation. Depending upon the degree of the variable, the number of solutions for that equation is defined.Calculation:Given equation is 5(x - 1) + 3x = 7(x + 1)
On simplifying the equation, we get
5(x - 1) + 3x = 7(x + 1) ⇒ 5x - 5 + 3x = 7x + 7
⇒ 8x - 5 = 7x + 7
⇒ 8x - 7x = 7 + 5
⇒ x = 12
Therefore, the solution for the given equation is x = 12.
Here, the power or the degree of the variable x is 1 in the given equation. Thus, it has only one solution.
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Please help me with my math!!
Answer:
5
Step-by-step explanation:
Please hit brainliest if this helps or comment below with questions!
To find the current that supplies the maximum wattage, we need to take the derivative of the power function with respect to I, set it equal to zero, and solve for I. The derivative of the power function is:
dW/dI = 120 - 24I
Setting this equal to zero and solving for I, we get:
120 - 24I = 024I = 120I = 5
Therefore, the current that supplies the maximum wattage is 5 amps. We can verify that this is a maximum by checking the second derivative of the power function with respect to I. The second derivative is:
d^2W/dI^2 = -24Since the second derivative is negative, the function has a maximum at I = 5.
Please hit brainliest if this helped!
Answer:
We can find the current that supplies the maximum wattage by finding the value of I that maximizes the power function W(I) = 120I - 12I^2.
To do this, we can take the derivative of W with respect to I and set it equal to zero:
dW/dI = 120 - 24I = 0
Solving for I, we get:
I = 5
Therefore, the current that supplies the maximum wattage is 5 amps.
Answer: b. 5
34x78 use another method besides the traditional algorithm?
Answer:
2652 is the correct answer
Cables and parallel beams are used to support a bridge. The obtuse angles formed by the beams and the bridge are 105°. The acute angle formed by the cable and the bridge is 42°.
Note: Picture is not drawn to scale.
What is the measure of angle X?
Answer:
Step-by-step explanation:
A$AP BEAN$: Khan Academy can help you. Do your work and stop cheating!!!!!
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Blake was a little concerned as he stood in the middle of the overcrowded elevator. the sign clearly stated that the total weight in the elevator must be less than 1,800 pounds. write an inequality to show the weight limit for the elevator. w > 1,800 w < 1,800 w ≤ 1,800 w ≥ 1,800
The inequality to show the weight limit for the elevator is w < 1,800.
What is a inequality?Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal.
Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.
In this situation, the sign clearly stated that the total weight in the elevator must be less than 1,800 pounds.
The inequality will be:
w < 1800 where w is the weight.
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HELPP!! PLS PLS
can someone show me a graph of a line going through (-1,2) with a slope of -3/4
Answer:
We can start at the given point (-1, 2) and move down 3 units and right 4 units to plot the next point. Repeat this for however long you want the line to be.
Hope this helps!
Here is the diagram:
Is r =- 0.85 A strong correlation?
A correlation value of -0.8 or lower denotes a significant negative link, whereas one of -0.3 or lower denotes a negligibly weak relationship.
How to interpret a correlation coefficient?
The statistical measure of how well changes in the value of one variable predict changes in the value of another is called a correlation coefficient. The value rises or falls in step with positively associated variables.
Why is correlation coefficient significant? What does it mean?
As a whole, correlation coefficients are used to evaluate the direction and strength of the linear correlations between two sets of variables. When both variables have a normal distribution, use Pearson's correlation coefficient; otherwise, use Spearman's correlation coefficient.
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