Answer:
The answer would be $9 dollars per hour.
Step-by-step explanation:
Let's start off with getting the basics down. She babysits for 2 hours each night for 10 total nights, so we would multiply the two and get 20 hours of babysitting service. We would then take $180 and divide the total money amount by the number of hours to get your money per hour. In this case, the answer is $9 per hour.
Ian is going to use a computer at an internet cafe. The cafe charges an initial fee to
use the computer and then an additional price per minute of usage. It is known that
the total charge to use a computer for 5 minutes would be $6 and that the additional
rate per minute of use is $0.40. Write an equation for the function C(t),
representing the total cost of using a computer for t minutes at the internet cafe.
Answer:
C(t) = 6 + .4t
Step-by-step explanation:
Since there is a constant rate of 6 for the first 5 minutes, that would be a value itself. After that, it would always differ by .4 every minute, making this the function.
The reference angle for 305
Answer:
55°
Step-by-step explanation:
The angle 305° is in the fourth quadrant
To find the related acute angle ( the reference angle ) subtract from 360°
reference angle = 360° - 305° = 55°
The path of a ball kicked from the ground can be modeled by the equation y=−1/3(x−3)(x−21), where x and y are measured in feet. The x-axis represents the ground. How far does the ball land from where it is kicked?
The ball lands
feet from where it is kicked.
Answer:
The ball lands 18 feet from where it is kicked.
Step-by-step explanation:
Given : The path of a ball kicked from the ground can be modeled by the equation [tex]y=-\frac{1}{3}(x-3)(x-21)[/tex], where x and y are measured in feet. The x-axis represents the ground.
To find : How far does the ball land from where it is kicked?
Solution :
According to question,
The value of y is zero as it is kicked from ground.
So, [tex]0=-\frac{1}{3}(x-3)(x-21)[/tex]
Applying zero product property,
[tex]a\cdot b\cdot c=0\Rightarrow a=0\text{ or }b=0\text{ or }c=0[/tex]
i.e. [tex]-\frac{1}{3}\cdot (x-3)\cdot (x-21)=0[/tex]
[tex]x-3=0[/tex]
[tex]\Rightarrow x=3[/tex]
[tex]\text{ or }x-21=0[/tex]
[tex]\Rightarrow x=21[/tex]
The distance the ball land from where it is kicked is d=21-3=18.
Therefore, the ball lands 18 feet from where it is kicked.
The ball lands 18 feet from where it is kicked.
To find out how far the ball lands from where it is kicked, we need to determine the horizontal distance traveled by the ball when it hits the ground again. The x-axis represents the ground, so we are looking for the x-coordinate of the point where the ball lands, which is when y = 0.
Given the equation of the path of the ball:
[tex]\[ y = -\frac{1}{3}(x - 3)(x - 21) \][/tex]
We set y to 0 to find the x-coordinates where the ball touches the ground:
[tex]\[ 0 = -\frac{1}{3}(x - 3)(x - 21) \][/tex]
This equation can be factored to:
[tex]\[ 0 = (x - 3)(x - 21) \][/tex]
Setting each factor equal to zero gives us two solutions for x:
[tex]\[ x - 3 = 0 \quad \text{or} \quad x - 21 = 0 \][/tex]
[tex]\[ x = 3 \quad \text{or} \quad x = 21 \][/tex]
These solutions represent the x-coordinates where the ball is kicked (x = 3) and where it lands (x = 21). To find the distance between these two points, we subtract the smaller x-coordinate from the larger one:
[tex]\[ \text{Distance} = 21 - 3 = 18 \text{ feet} \][/tex]
However, since the ball is kicked from the ground and lands back on the ground, the distance it travels horizontally is the absolute value of the difference between the two x-coordinates:
[tex]\[ \text{Horizontal distance} = |21 - 3| = |18| = 18 \text{ feet} \][/tex]
Solve the value of y.
I believe that y=17.8
I hope that helps you!
the area of the base (B) of a triangular pyramid is 28 cm. The perimeter (p) is 20 cm, and the slant height (S) is 5 cm. Determine the pyramid's surface area. A) 96 cm2 B) 128 cm2 C) 225 cm2 D) 78 cm2
Answer: D. 78cm2
Step-by-step explanation:
SA=B+1/2ph
SA=28+1/2(20)(5)
SA=78cm2
Answer:
78 cm2
SA = B +
1
2
ph
SA = 28 +
1
2
(20)(5)
SA = 78 cm2
Challenge: Find the area of the polygon.
space.
2.4 m
0.4 m
0.4
m
0.4 m
1.0
ms
W 90
Your answer
Answer:
[tex]3.6 {m}^{2} [/tex]
Step-by-step explanation:
The area of a rectangle is length times width.
We divide the polygon into 4 rectangles:
The area of the first rectangle is :
[tex]0.4 \times 0.4 = 0.16 {m}^{2} [/tex]
The area of the second rectangle is
[tex]2.4 \times 0.6 = 1.44 {m}^{2} [/tex]
The area of the 3rd rectangle is
[tex]1.6 \times 1 = 1.6 {m}^{2} [/tex]
The area of the fourth rectangle is
[tex]0.4 \times 1 = 0.4 {m}^{2} [/tex]
Putting all together, the area of the polygon is;
0.16+1.44+1.6+0.4=3.6m²
Which quadrilateral is a trapezoid?
Answer:
Look for the parallelograms , or squares , or rectangles . Those quadrilaterals are usually trapezoids .
Step-by-step explanation:
Answer:
You cna have trapezoid and isosceles trapezoid both have either inward end lengths and parallel lines so some look like a flat roof with identical slant. one going one way and the other slant going the other.
Step-by-step explanation:
(-6)*(-6)*(-6)*z*z
the expression is
Answer: (-6)³z² = -216z²
Step-by-step explanation:
(-6)(-6)(-6)z·z
-6 is multiplied by itself 3 times so gets an exponent of 3 --> (-6)³
z is multiplied by itself 2 times so gets an exponent of 2 --> z²
On 1st January 2016 Li bought a boat for $170000
The value of the boat depreciates by 8% per year.
Work out the value of the boat on 1st January 2019
Give your answer correct to the nearest dollar.
After a depreciation of 8% per year for 3 years, the value of Li's boat depreciates to approximately $136258, according to the formula for calculating the value of an asset after a certain number of years of depreciation.
Explanation:The value of an asset after a certain number of years, taking into account annual depreciation, can be calculated using the formula: Preliminary Value x ((100 - Depreciation Rate) / 100) ^ Years Of Depreciation.
Given that the initial value of Li's boat was $170,000 and it depreciated by 8% each year, we can substitute these values into the formula to find the value of the boat on 1st January 2019 (after 3 years).
So, the boat's value would be: $170,000 x ((100 - 8) / 100) ^ 3. This simplifies to $170,000 x (0.92) ^ 3, yielding a final value of approximately $136258
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Anna pays for her purchase with four $20 bills and two $10 bills. Which is the correct change for Anna's purchase?
A) Two $1 bills, one nickel, and two pennies
B) Two $1 bills and one dime
C) Three $1 bills, one nickel, and two pennies
D) Three $1 bills, two nickels, and two pennies
E) None of the above
Answer:
what was she buying ?total she has 100 dollars
Step-by-step explanation:
A cylinder has a base diameter of 8 inches and a height of 7 inches. What is its volume in cubic inches, to the nearest tenths place?
Answer:
351.9 cubic in
Step-by-step explanation:
The volume of a cylinder is hr²π.
r is half the diameter, so 8/2 is 4.
Plug in your h and r and get:
7 * 4² * π
7 * 16 * π
112π
Multiply the π and you'll get about 351.9 cubic in
The volume of the cylinder is 352 cu.inches.
What is a Cylinder?A cylinder is a three-dimensional figure, it is made up of parallel circular discs of the same radius.
The cylinder consists of two circular bases, connected by a curved surface at a fixed distance.
A cylinder has a base diameter of 8 inches and a height of 7 inches.
The volume is the space occupied by a three-dimensional object.
The volume of the cylinder is given by the formula
V = πr²h
Here, r is the radius of the base,
h is the height of the cylinder.
The volume is determined in cubic units.
The value of r = diameter / 2
r = 8/2 = 4 inches
h = 7 inches.
Substituting these values in the formula to determine the volume,
Volume = (22/7) * 4² * 7
Volume = (22/7) * 16 * 7
Volume = 22 * 16
Volume = 352 cu.inches
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A line goes through the points (-1,9) and (1,1).Write the equation of this line in point slope form using one of these points.
Answer:
y-9= -4(x+1)
Step-by-step explanation:
First, you should know what the format for point slope form is. y-y1=m(x-x1). Now, fill in the points to the x1 and y1 variables. It doesn't matter what ordered pair you use. If the number you fill in is negative, for example, -1, change it to a positive 1. If you're plugging in a positive number such as 9, it becomes -9. Now, it may look like this: y-9=m(x+1). However, you still need to find slope. You can use the expression y-y1/x-x1. 9-1=8. -1-1= -2. So, your slope is 8/-2. However, you can simplify this to -4. Now, plug in -4 to your equation to have your final answer: y-9=-4(x+1).
I need help ASAP! Please do not decimal it
Answer:
the correct answer for this question is
1¹/³ is 0.333'
and the second one is 1.111'
Answer:
Place one on the 3rd mark after one, then the 5th mark after 2
Step-by-step explanation:
The smalltown Zoo has 2 African elephants. An elephant eats 230 pounds of food per day. How many pounds of food are needed to feed the elephants for an entire week?
Answer:
3,220
Step-by-step explanation:
3220 is how much food you will need for both elephants
What is the area of this parallelogram?
A.60 cm²
B.66 cm²
C.72 cm²
D.132 cm²
Answer:
Hello, Your answer will be,D) 132cm²
Hope That Helps! And if you find this answer helpful you can give me a brainleist!
PLEASE ANSWER THIS QUICKLY I NEED THIS DONE BY 3:45!!!!!
A kitchen scale shows the weight of a piece of fruit is 2 pounds. The actual weight of the fruit is 1.6 pounds. What is the percent error for the kitchen scale?
The percent error in the kitchen scale's measurement is found using the formula ((Measured Value - Actual Value) / Actual Value) × 100%, resulting in a 25% error when comparing the scale's reading of 2 pounds to the actual weight of 1.6 pounds.
Explanation:The question asks to find the percent error for a kitchen scale when measuring the weight of a piece of fruit. The percent error is a way of comparing the accuracy of a measurement to the actual value, and it's calculated using the formula: Percent Error = ((|Measured Value - Actual Value|) / Actual Value) × 100%. In this case, the measured value is 2 pounds and the actual value is 1.6 pounds.
First, subtract the actual value from the measured value: 2 - 1.6 = 0.4 pounds. Then, divide this difference by the actual value: 0.4 / 1.6 = 0.25. Finally, multiply by 100% to find the percent error: 0.25 × 100% = 25%.
Therefore, the percent error for the kitchen scale is 25%. This calculation helps in understanding the accuracy and reliability of measurements taken by the scale.
Which expressions are equivalent to_____? Check all that apply.
Option 1. [tex](-2)(5x) + (-2)(-\frac{3}{4})[/tex] and option 4.[tex]-10x + \frac{3}{2}[/tex] are equivalent to [tex]-2(5x-\frac{3}{4} ).[/tex]
Step-by-step explanation:
Step 1:
The given expression is expanded as follows.
The -2 is multiplied with the 5x and then the -2 is multiplied with the [tex]-\frac{3}{4}[/tex].
So the expression becomes as follows;
[tex]-2(5x-\frac{3}{4} ) = (-2)(5x) + (-2)(-\frac{3}{4}).[/tex]
This is the first option given so the first expression is equivalent.
Step 2:
[tex]-2(5x-\frac{3}{4} ) = (-2)(5x) + (-2)(-\frac{3}{4}) = -10x + \frac{6}{4} = -10x + \frac{3}{2} .[/tex]
Of the other four options, only the fourth expression has the fraction [tex]\frac{3}{2}[/tex] so the fourth expression is also equivalent.
Expressions 1 and 4 are equivalent to the given expression.
Edward owes his parents $20 for a new video
game that he bought. He pays his parents back
$5 every 2 days. Complete the table and graph
to find how long it will take Edward to
pay back his debt.
Answer:
it would take Edward 8 to pay back his debt
Step-by-step explanation:
every 2 days he pays his parents 5 bucks so because 5 times 4 equals 20 he would have to multiply the 4 by 2 and that gets you 8 days
Final answer:
Edward will pay back his $20 debt to his parents by repaying $5 every 2 days; thus, it will take him 8 days in total to repay the full amount.
Explanation:
The question asks us to determine how long it will take for Edward to pay back a $20 debt to his parents if he repays $5 every 2 days. To solve this, we can set up a simple table showing the cumulative amount paid over time, and then establish a corresponding graph if needed. Here's how the repayment schedule works out:
Day 0: $0 paid back
Day 2: $5 paid back (Total: $5)
Day 4: $5 paid back (Total: $10)
Day 6: $5 paid back (Total: $15)
Day 8: $5 paid back (Total: $20)
From the table, it is clear that it will take Edward 8 days to pay back the full $20 debt.
need this answer asap my homework is due soon
Answer:
a) x < 3
b) 3,4,5,6
c) x > 6
Step-by-step explanation:
a) x < 3
b) 3,4,5,6
c) 3x + 7 > x + 19
2x > 12
x > 6
a bakery uses 3/5 a cup of sugar for each cookies.How many batches of cookies can they make with 9 cups of sugar?
Answer:
12
Step-by-step explanation:
divide 9 by 3/5 or .75
A table representing the function f(x) = 2(three-halves) Superscript x is shown below. A 2-column table has 4 rows. The first column is labeled x with entries (0, 1, 2, 3). The second column is labeled f (x) with entries 2, 3, 4.5, 6.75. What is true of the given function? The function increases at a constant additive rate. The function increases at a constant multiplicative rate. The function has an initial value of 0. As each x value increases by 1, the y values increase by 1.
Answer:
The function increases at a constant multiplicative rate.
Step-by-step explanation:
I had it
The correct conclusion about the function is 2: "the function increases at a constant multiplicative rate".
Given information:
The value of function f(x) is shown in the below table:
x 0 1 2 3
f(x) 2 3 4.5 6.75
So, the value of x changes from 0 to 3, and the value of function f(x) changes from 2 to 6.75.
Following observations can be made using the given values:
The function starts with an initial value of 2.The value of function increases with a constant multiplicative rate. The constant rate is 1.5 times. The increase of value of function is not constant as it is multiplicative.From the above conclusions and the given options, it can be said that the correct option is 2.
Therefore, the correct conclusion about the function is 2: "the function increases at a constant multiplicative rate".
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Which of the following sets does not contain any irrational numbers?
{-5.12,pi,30}
{square root of 80, 100, 6.56}
{ 9/2 , square root of 100, 5.123}
{5.123..., 1/2 , -65}
Answer:
{ 9/2 , square root of 100, 5.123}
Step-by-step explanation:
The answer would be an option (D) {5.123..., 1/2, -65}. This set does not contain any irrational numbers.
What are real numbers?Real numbers are defined as the value of a continuous quantity that can represent a distance along a line of a real number in mathematics. Rational and irrational numbers are both real numbers. Rational numbers such as integers (-7, 0, 4), fractions(5/2,7/2, 4.2), and irrational numbers such as √5, π, etc., are all real numbers.
According to the given options
(A) {-5.12,pi,30}
Here the irrational number is pi
(B) {square root of 80, 100, 6.56}
Here the irrational number is the square root of 80 i.e. (√80)
(C) { 9/2, square root of 100, 5.123}
Here the irrational number is the square root of 100i.e. (√100)
(D) {5.123..., 1/2, -65}
Here this set does not contain any irrational numbers
Hence, the answer would be option (D) {5.123..., 1/2, -65}. This set does not contain any irrational numbers.
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If the r-value, or correlation coefficient, of a data set is 0.934, what is the
coefficient of determination to three decimal places?
What makes the ratio equivalent to 11:44
Answer:
1:4
Step-by-step explanation:
1:4=11:44
tan x= 3÷5 nearest tenth
Answer:
17.0°
Step-by-step explanation:
We want to solve
[tex] \tan(x) = \frac{3}{10} [/tex]
We take inverse tangent of both sides using a scientific calculator to get:
[tex]x = { \tan}^{ - 1} ( \frac{3}{10} )[/tex]
[tex]x = 16.6992[/tex]
We round to the nearest tenth to get;
[tex]x = 17.0 \degree[/tex]
Therefore the value of x is 17.0°
Which fraction is larger 2/3 3/12 4/5 3/4
Answer:
4/5
Step-by-step explanation:
2/3 is 0.66666666
3/12 is 0.25
4/5 is 0.8
3/4 is 0.75
The largest fraction is 4/5.
Comparing Of Fractions.
To compare these fractions, make sure they all have the same denominator.
The lowest common factor is 60
Now, express each fraction with a denominator of 60.
2/3 = 40/60
3/12 = 15/60
4/5 = 48/60
3/4 = 45/60
Therefore, the largest fraction is 48/60 which is equivalent to 4/5.
So, 4/5 is the largest fraction among the given fractions.
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Practice
pies and factors - QUIZ - LEVEL
Which statement is true?
4 is a factor of 18.
4 is a factor of 20.
4 is a factor of 26.
4 is a factor of 30.
Answer:
4 is a factor of 20.
Step-by-step explanation:
Final answer:
The true statement regarding factors is that 4 is a factor of 20. This is proven by dividing 20 by 4, which results in 5 without any remainder.
Explanation:
The question asks which statement is true regarding factors of numbers. A factor is a number that can divide another number without leaving a remainder. For example, 4 is a factor of 20 because when you divide 20 by 4, there is no remainder, and you get 5 which is a whole number. So the true statement among the given options is that 4 is a factor of 20.
Looking at the other options, 4 is not a factor of 18 since 18 divided by 4 gives you 4 with a remainder of 2. Similarly, 4 is not a factor of 26 because 26 divided by 4 is 6 with a remainder of 2. Lastly, 4 is not a factor of 30 because 30 divided by 4 is 7 with a remainder of 2. Therefore, the correct answer is that 4 is a factor of 20.
It takes Dan 32 minutes to complete 2 pages of math homework. At this rate, how
many pages does he complete in 200 minutes?
Answer:
12.5 pages
Step-by-step explanation:
32/2= 16 min per page
200/16= 12.5 pages
or
200/x = 32/2
200/32= 6.25
6.25*2= 12.5
Answer:
Step-by-step explanation:
12.5
because you divide and then multiply it by 2
One container is filled with a mixture that is 30% acid. A second container is filled with a mixture that is 50% acid. The second container is 50% larger than the first, and the two containers are emptied into a third container. What percent of acid is the third container?
Answer:
42% acid
Step-by-step explanation:
Suppose that these two storage containers are filled to complete capacity?
That makes the second container have 3 volume parts and the first container having 2 volume parts.
v*(1.50)= (3/2)*v
First Container 2v 30% acid
Second Container 3v 50% acid
The mixture of all of this is in the third container. Two parts plus three parts is 5 parts for the mix volume.
=(2*30+3*50)/5
=210/5
=42
So,
42 % Acid, mixture
Final answer:
After calculating the quantities of acid from both containers and their total volume, the final acid concentration in the mixture in the third container is found to be 42%.
Explanation:
The student has asked about finding the percentage of acid in a third container after mixing two solutions with different acid concentrations. This question involves proportion and percentage calculations, which are commonly covered in high school mathematics.
To find the final concentration of acid in the third container, we can use the formula final concentration = (quantity of acid in container 1 + quantity of acid in container 2) / total volume. Assume the first container has a volume of V liters. Since the second container is 50% larger, it has a volume of 1.5V liters.
Acid in the first container = V liters × 30% = 0.3V liters
Acid in the second container = 1.5V liters × 50% = 0.75V liters
Total volume = V + 1.5V = 2.5V liters
Thus, the final concentration of acid = (0.3V + 0.75V) / 2.5V = 1.05V / 2.5V = 42%.
The final acid concentration in the third container is 42%.
what’s the hypotenuse?
Answer:
c = 10 feet
Step-by-step explanation:
Use the Pythagorean theorem: a^2 + b^2 = c^2
Step 1: Plug in the information
(6)^2 + (8)^2 = c^2
36 + 64 = c^2
100 = c^2
sqrt(100) = sqrt(c^2)
10 = c
Answer: c = 10 feet