Of the 30 girls who tried out for lacrosse team 12 were selected. Of the 40 boys that tried out 16 were selected. Are the ratios of the number of students on the team to the number of students trying out the same for both boys and girls? Explain.
If g is the variable, which mathematical sentence expresses the information below? "The number of gallons of gas in the tank plus 7 more adds up to 12 gallons."
Answer: [tex]g+7=12[/tex]
Step-by-step explanation:
The given statement : The number of gallons of gas in the tank plus 7 more adds up to 12 gallons.
Given variable : 'g'
if g represents the number of gallons of gas in the tank, then for the given statement we have the following expression:-
[tex]g+7=12[/tex]
Hence, the mathematical sentence expresses the given information :-
[tex]g+7=12[/tex]
How to solve (8.76 x 109)(6.52 x 10-3)/13.27 x 105?
Both windows are congruent. What is the combined area of the two windows?
The curve y = x/(1 + x2) is called a serpentine. find an equation of the tangent line to this curve at the point (2, 0.40). (round the slope and y-intercept to two decimal places.) y =
The equation of the tangent line to the curve y = x/(1 + x2) at the point (2, 0.40) is given by y = -0.24x + 0.88, rounded to two decimal places.
Explanation:The subject of the question refers to calculus, specifically the concept of finding the equation of a tangent line to a curve. This process typically involves finding the derivative of the function (which gives the slope of the tangent), and then using the point-slope form of the line equation.
The derivative of y = x/(1 + x2) can be found using the quotient rule for differentiation and is given by y' = (1 - x2)/(1 + x2)2. Evaluating this at x = 2 gives a slope of about -0.24 (rounded to two decimal places).
The equation of the line is usually written in the slope-intercept form, y = mx + b, where m represents the slope and b represents the y-intercept. Since we know that the line passes through the point (2, 0.40), we can substitute these values into the equation and solve for b. This yields a y-intercept of about 0.88 (rounded to two decimal places).
Therefore, the equation of the tangent line to the curve y = x/(1 + x2) at the point (2, 0.40) is approximately y = -0.24x + 0.88.
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Use the distributive property to remove the parentheses.
-5(5v-4x-1)
The foodservice department has been asked to prepare a special luncheon for the grandway hospital board of directors on tuesday. there will be 25 board members at the luncheon. there are 125 portions of vegetable lasagna needed for the hospital's lunch service that day. the standardized vegetable lasagna recipe yields 125 portions and requires 21 lb of ricotta cheese. how much ricotta cheese must chef carl order to meet production needs?
Joan likes to watch the birds in her yard.one morning,she notices that there are twice as many robins as blue jays.if she counted 21 blue jays and robins in all, how many blue jays did she count. Need help badly
Read the following statement: All prime numbers are odd. Which of the following choices is a counterexample to the statement?
1
17
2
7
The choice which is a counterexample to the statement is 2.
What are prime numbers?"It is a number that is divisible only by itself and 1 "
For given question,
We have been given a statement 'All prime numbers are odd. '
We need to select a counterexample to given statement.
Consider a number 2.
2 is divisible only by itself and 1
This means, 2 is a prime number.
We know that 2 is an even number.
Therefore, the choice which is a counterexample to the statement is 2.
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Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = –3 + (n – 1)(–2.2)
The arithmetic sequence A(n) = –3 + (n – 1)(–2.2) yields the first, fourth, and tenth terms as -3, -9.6, and -22.8 respectively when n is substituted with the corresponding term number.
Explanation:The arithmetic sequence described by the rule A(n) = –3 + (n – 1)(–2.2) can be used to find specific terms of the sequence. To find the first term, plug in n = 1 into the formula to get A(1) = -3 + (1 - 1)(-2.2) = -3. The fourth term can be found by plugging in n = 4 which yields A(4) = -3 + (4 - 1)(-2.2) = -9.6. The tenth term is calculated as A(10) = -3 + (10 - 1)(-2.2) = -22.8. Therefore, the first, fourth, and tenth terms are -3, -9.6, and -22.8 respectively.
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Chris bought clothes for school. She bought 3 shirts for $12 each and a skirt for $15.
How much did she spend on the shirts?
Question 1 options:
My past due bill is $585.00, and I just made payment arrangements for the next 3 months to keep my account from being suspended. My normal monthly bill is $50.00 per month. How much will I need to pay each month?"
Answer:
$245
Step-by-step explanation:
Given : My past due bill is $585.00, and I just made payment arrangements for the next 3 months to keep my account from being suspended. My normal monthly bill is $50.00 per month.
To Find: How much will I need to pay each month?"
Solution:
Past due bill = $585
Now just made payment arrangements for the next 3 months to keep my account from being suspended
So, Payment each month of past bill = [tex]\frac{585}{3}=195[/tex]
My normal monthly bill is $50.00 per month.
So, I need to pay per month = $50+$195= $245
Thus ,I need to pay $245 per month .
Write 14/42 in simplest form
What is the value of x 20 35 60 70
Answer:
Value of x is:
20
Step-by-step explanation:
Clearly, the two angles are vertically opposite
and vertically opposite angles are always equal
So, x+40=3x
Subtracting both sides by x, we get
x+40-x=3x-x
i.e. 40= 2x
Dividing both sides by 2, we get
x = 20
Hence, Value of x is:
20
From January through October, ACE Autos sold 150 cars. The number of cars sold in November and the number of cars sold in December were in the ratio of 3:5. If the total number of cars sold in the year was 390, find the number of cars sold in December. Solve algebraically.
390-150 = 240 cars were sold in November & December
ratio is 3:5
240/8 = 30
30*3 = 90
3*5 = 150
90 cars sold in November
150 cars sold in December
Which of the following inequalities matches the graph?
graph of an inequality with a solid vertical line through the point negative 7, 0 and shading to the left of the line
Enter the degree of the polynomial below
7x^7+10x^4+4x^3-5x^11-10x^6-6x^7
A. 11
B. 10
C. 6
D. 7
The population of a town is 500,000 in 1990. The population increases at a rate of 5% every five years. What will be the approximate population of the town in 2005?
A. 578,813
B. 587,712
C. 499,354
D. 512,945
What is the following product
Identify the property used in the first 5 steps to solve the equation 2(x-5)-6x=-22
Answer choices:
Step 1: Associative, Commutative or Distributive Property
Step 2: Associative, Commutative or Distributive Property
Step 3: Addition or Multiplication Property of Equality
Step 4: Addition Property or Combine Like Terms
Step 5: Addition or Multiplication Property of Equality
Answer:
Distributive property
Step-by-step explanation:
Evaluate 5x + (-2x 2) for x = 3.
Max is observing the velocity of a runner at different times. After one hour, the velocity of the runner is 5 km/h. After two hours, the velocity of the runner is 3 km/h.
Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. Show your work and define the variables used. (5 points)
Part B: How can you graph the equations obtained in Part A for the first 4 hours? (5 points)
Which function represents g(x), a reflection of f(x) =2/5 (10)x across the x-axis? g(x) =-2/5 (10)x g(x) =-2/5(1/10)^x g(x) =2/5(1/10)^-x g(x) =2/5 (10)-x
Answer:
A. [tex]g(x)=-\frac{2}{5}(10)^x[/tex].
Step-by-step explanation:
We are given the function [tex]f(x)=\frac{2}{5}(10)^x[/tex].
Now, g(x) is obtained by reflecting the function f(x) over x-axis.
Reflection of f(x) over x-axis changes f(x) to -f(x).
So, we get,
[tex]g(x)=-f(x)[/tex]
i.e. [tex]g(x)=-\frac{2}{5}(10)^x[/tex]
Thus, the reflected function is [tex]g(x)=-\frac{2}{5}(10)^x[/tex].
So, option A is correct.
Which of the following equations has the solution x = all real numbers? Select one: a. 4(3 - x) + 6x = 3x + 12 - x b. 4(3 - x) + 6x = 3x + 10 - x c. 4(3 - x) + 6x = 3x + 12 + 2x d. 4(3 - x) + 6x = x + 12 - 3x
The equation that has the solution x = all real numbers is given by option a) (4(3 - x) + 6x = 3x + 12 - x) and this can be determined by using the arithmetic operations.
Check all the options in order to determine which of the following equations has the solution x = all real numbers.
A) 4(3 - x) + 6x = 3x + 12 - x
Simplify the above equation separately that is:
LHS = 12 - 4x + 6x
= 12 + 2x
RHS = 3x + 12 - x
= 2x + 12
LHS = RHS means there is an infinite number of solutions.
B) 4(3 - x) + 6x = 3x + 10 - x
Simplify the above equation separately that is:
LHS = 12 - 4x + 6x
= 12 + 2x
RHS = 2x + 10
LHS [tex]\neq[/tex] RHS means that there are no solutions.
C) 4(3 - x) + 6x = 3x + 12 + 2x
Simplify the above equation separately that is:
LHS = 12 - 4x + 6x
= 12 + 2x
RHS = 5x + 12
LHS [tex]\neq[/tex] RHS means that there are no solutions.
D) 4(3 - x) + 6x = x + 12 - 3x
Simplify the above equation separately that is:
LHS = 12 + 2x
RHS = 12 - 2x
LHS [tex]\neq[/tex] RHS means that there are no solutions.
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if the lines a and b in the diagram below are parallel why do angles 1 nd 8 measure 120 degree angles
A) Because they are alternate interior angles.
B) Because they are corresponding angles.
C) Because they are alternate exterior angles.
D) Because they are same-side interior angles.
Let u = <-9,4>, v = <8, -5>. Find u - v.
To find the difference between vectors u and v, subtract corresponding components.
Given vectors u = <-9,4> and v = <8, -5>, to find the difference u - v, subtract corresponding components:
Subtract the x-components: -9 - 8 = -17
Subtract the y-components: 4 - (-5) = 9
Therefore, u - v = <-17, 9>.
For a fixed amount of gas at a constant temperature, the volume of the gas is inversely proportional to its pressure. The function v=18000/p relates the volume in cubic inches and pressure in pounds per square inch of a gas. What is the volume when the pressure is 900 pounds per square inch?
Answer:
Volume of the gas is 20 cubic inches.
Step-by-step explanation:
Inverse proportion: Let x and y be two quantities are said to be inverse proportion or inversely proportional if one quantity increases at the same rate the other decreases.
[tex]x \propto \frac{1}{y}[/tex] or
[tex]x = \frac{k}{y}[/tex] ⇒[tex]k =xy[/tex] where k is constant.
Since, it is given that the volume of gas is inversely propotional to its pressure.
Given the function:
[tex]v = \frac{18000}{p}[/tex] ......[1] ; where volume in cubic inches and pressure in pounds per square.
To find the volume in cubic inches.
The pressure (p) = 900 pounds per square inch.
Substitute the value of p in [1];
[tex]v = \frac{18000}{900}= 20 in^3[/tex]
Therefore, the volume(v) = 20 cubic inches when the pressure is 900 pounds per square inch.
The volume when the pressure is 900 pounds per square inch is [tex]20 in^3.[/tex]
What is proportionality?proportionality can be explained as equality between two ratios, it gives relationship that is always in the same ratio.
We were given the function as[tex]v= \frac{18000}{p}[/tex]
But the pressure is given as pressure (p) = 900 pounds per square inch.
We can get volume, if we substitute "p" as;
[tex]v=\frac{18000}{p}[/tex]
[tex]V= \frac{18000}{900} =20 in^3.[/tex]
Hence, the volume when the pressure is 900 pounds per square inch is [tex]20 in^3.[/tex]
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What is the equation of the quadratic graph with a focus of (1, 1) and a directrix of y = −1?
f(x) = − one fourth (x − 1)2 + 1
f(x) = − one fourth (x − 1)2
f(x) = one fourth (x − 1)2 + 1
f(x) = one fourth (x − 1)2
HELP! 5/x+3 - 3/x-2 = 5/3x+6 please show your work. :)
The longest side of an acute isosceles triangle is 8 centimeters. Rounded to the nearest tenth, what is the smallest possible length of one of the two congruent sides?
To comply with the triangle inequality theorem, the smallest possible length of the congruent sides in an acute isosceles triangle with the longest side being 8 centimeters, would be slightly greater than 4 centimeters, rounded to the nearest tenth (4.1 centimeters).
Explanation:In the context of an acute isosceles triangle, the longest side is the base and the other two sides are congruent or have equal length. The smallest possible length of the congruent sides comes into play in respect of the triangle inequality theorem, stating that the sum of the lengths of any two sides must be greater than the length of the third side. Thus, for the smallest possible length, each of the congruent sides must hence be just slightly larger than half the length of the longest side. So for an 8 centimeter base, the smallest length for the congruent sides should be slightly more than 4 centimeters, let's call it 4.1 centimeters, when rounded to the nearest tenth.
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