Place-value blocks can be used to find the difference between the monthly cost of using the DVD player, $0.40, and the dishwasher, $0.85 by converting them to the nearest ten. The difference will be $0.50.
What are place value blocks?It should be noted that base ten blocks are used to represent numbers as a base ten model. It should be noted that they are useful because they show the value of each digit in a number and make it easier to visualize the size of a number.
In this case place value blocks mimic the base ten number system by representing the ones, tens, hundreds, and thousands places
Therefore, place-value blocks can be used to find the difference between the monthly cost of using the DVD player, $0.40, and the dishwasher, $0.85 by converting them to the nearest ten. The difference will be $0.50.
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The total weight of 15 boxes is 45 pounds. How muchwould 40 boxes weigh
Answer:
40 boxes would weigh 120 pounds. nice
15/45 = 40 x 3 = 120 pounds
Step-by-step explanation:
:)
2x + 5 < -3 or 6x - 5 > 7
Answer: 2x-5/3=7
Tiger shows you, step by step, how to Isolate x (Or y or z) in a formula
the difference between nine times a number and one more than five times the number
The required expression for the given statement is 4x + 1.
What is an expression?An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.
The given statement is,
the difference between nine times a number and one more than five times the number
Let x be the number.
Thus, we have
nine times a number = 9x
one more than five times the number = 1 - 5x
Thus, the numerical expression we get is
9x + (1 - 5x)
Expanding we get
9x + 1 - 5x
Solving we get
4x + 1
this is the required expression
Thus, the required expression for the given statement is 4x + 1.
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9. The average amount of soda consumed per person in the US from 1990 to 2010 can be modeled by the following equation, where x is the number of years since 1990. f(x) 5.852x^4-0.002x³ + 0.006x² + 0.029x + 47.855 Find the average rate of change for each time interval. a. 1990 to 1996 b. 1990 to 2000 c. 2005-2010
Using it's concept, the average rates of change are given as follows:
a. 1264.03 soda per person per year.
b. 5851.89 soda per person per year.
c. 128010.89 soda per person per year.
What is the average rate of change of a function?The average rate of change of a function is given by the change in the output divided by the change in the input. Hence, over an interval [a,b], the rate is given as follows:
[tex]r = \frac{f(b) - f(a)}{b - a}[/tex]
For this problem, the function is given as follows:
f(x) = 5.852x^4 - 0.002x³ + 0.006x² + 0.029x + 47.855.
From 1990 to 1996, we have t = 0 to t = 6, hence:
f(0) = 47.855.f(6) = 5.852(6)^4 - 0.002(6)³ + 0.006(6)² + 0.029(6) + 47.855 = 7632.01.Hence the rate is:
(7632.01- 47.855)/6 = 1264.03.
1264.03 soda per person per year.
From 1990 to 2000, we have t = 0 to t = 10, hence:
f(0) = 47.855.f(10) = 5.852(10)^4 - 0.002(10)³ + 0.006(10)² + 0.029(10) + 47.855 = 58566.75.Hence the rate is:
(58566.75 - 47.855)/10 = 5851.89.
5851.89 soda per person per year.
From 2005 to 2010, we have t = 15 to t = 20, hence:
f(15) = 5.852(15)^4 - 0.002(15)³ + 0.006(15)² + 0.029(15) + 47.855 = 296300.39.f(20) = 5.852(20)^4 - 0.002(20)³ + 0.006(20)² + 0.029(20) + 47.855 = 936354.84.Hence the rate is:
(936354.84 - 296300.39)/5 = 128010.89.
128010.89 soda per person per year.
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wats the answer help mee
Answer:
6
Step-by-step explanation:
The diameter is half of the given radius, therefore, split the radius in half.
[tex]\frac{12\:in^2}{2} = 6\:in^2[/tex]
Solve the equation 5k^2−20k=15 . Present exact values of the solutions. If there are more than one solutions, separate them by a comma.
The solutions of the quadratic equation 5k² - 20k = 15 will be 4.65 and negative 0.65.
What are the roots of the equation?Let the equation be ax² + bx + c = 0.
Then the roots of the equation will be
[tex]\rm x = \dfrac{-b \pm \sqrt{b^2 - 4 a c }}{2a}\\[/tex]
The quadratic equation is given below.
5k² - 20k = 15
Simplify the equation, then we have
k² - 4k = 3
k² - 4k - 3 = 0
Then the roots of the equation will be
[tex]\rm k = \dfrac{ -(-4) \pm \sqrt{(-4)^2 - 4 \times 1 \times (-3) }}{2 \times 1}\\\\k = \dfrac{4 \pm \sqrt {28}}{2}[/tex]
Simplify the equation, then we have
k = (4 ± 5.30) / 2
k = (4 + 5.30) / 2, (4 - 5.30) / 2
k = 4.65, -0.65
The solutions of the quadratic equation 5k² - 20k = 15 will be 4.65 and negative 0.65.
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Use the segment addition postulate to solve for the length of BC, if AC = 16, BC = x + 11, and AB = 3x-7.
Tom got 72 marks in 8 tests. How much did he get in each test on average?
Given
Tom got 72 marks in 8 tests.
Answer
[tex] \frac{72}{8} = 9[/tex]
he get 9 mark on average
A group of 15 students were assigned a novel to read during class. The data below represents the number of pages each student read.8, 8, 10, 11, 12, 12, 13, 14, 16, 16, 18, 18, 18, 20, 24Which of the following box plots correctly summarizes the data?
The box plots that correctly summarize the data is the option B from the image
This is further explained below.
What are box plots?Generally, a straightforward method of depicting statistical information on a plot, in which a rectangle is used to represent the second and third quartiles of the data, and in which the median value is typically shown by a vertical line drawn within the rectangle.
On each side of the rectangle, there are two horizontal lines that represent the lower quartile and the higher quartile.
A boxplot is a graphical representation of the distribution of data that is based on a summary of five numbers and follows a defined format.
In conclusion, The box plot in the illustration with choice B accurately summarizes the data.
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CQ
Image attached
A group of 15 students were assigned a novel to read during class. The data below represents the number of pages each student read.
8, 8, 10, 11, 12, 12, 13, 14, 16, 16, 18, 18, 18, 20, 24
Which of the following box plots correctly summarizes the data?
A
B.
C.
D
A girl owns 1 pairs of pants, 3 shirts, 4 ties, and 3 jackets. How many different outfits can the girl wear to school if each outfit must consist of one of each item?
Answer: She can wear 3 outfits to school because
Step-by-step explanation: She is able to wear the pants multiple times so she can have 1 pants 1 shirt 1 tie and 1 jacket for three days
I’ll give points + brainalist
The line which is perpendicular to the given line y = -x/8 + 3 is y - 8x =-2, there slopes are negative reciprocals of each other
How to fine the line that is perpendicular to the given lineGiven data
line y = -x/8 + 3
The equation of a line is represented as y = mx + c where m represents the slope. The unique feature of perpendicular line is that the slopes are negative reciprocals of each other.
Hence we find the line that has same value of m which is the slope
using the second option: y - 8x = -2
y - 8x = 2
y = 8x - 2
y = 8x - 2
the slope here is m = 8 which is equal to the negative reciprocals of the slope in the given equation and hence the correct option
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Hey, could somebody help me out with this?
-----------------------------------------------------------------
Upload the worksheet with your constructions below.
[tex]f(x)=x^{2} +2x-24[/tex]
SOME HELP ME PLS, I ONLY NEED CORRECT ANSWERS SO DON’T PUT A RANDOM ANSWER
Answer:
≈67.81
Step-by-step explanation:
Positive multiples of 4
Answer:
4, 8, 12, 16, 20, 24, 28, 32, 36, and 40 are some multiples of 4 that are positive.
Question
Shonda jogs 5 miles per hour.
Graph the relationship between the number of hours Shonda jogs and the total number of miles jogged.
here hope this helps u
Wayne recorded the eye colors of the people who have already signed up for a lecture on genetics.
green 2
blue 30
brown 38
What is the experimental probability that the next person to sign up will have blue eyes?
Write your answer as a fraction or whole number.
P(blue)=
The experimental probability of next person to have Blue eyes is 3/7.
Probability :Probability is the branch of mathematics that studies the possible outcomes of given events together with the outcomes' relative likelihoods and distributions.
It is based on the possible chances of something to happen.
Probability (P) = Number of a Favourable outcome {n (E)} / Total number of outcomes {n (S)}
Simply, P = n (E) / n (S)
Given, Eye colors of the people
Green = 2
Blue = 30
Brown = 38
To find the probability of next person to have blue eyes, first we will add the given eye colors
Total number of Eye Colors = 2 + 30 + 38 = 70
Number of Blue Eyes = 30
Then, Probability to have blue eyes P(blue) = Number of Blue Eyes / Total number of Eye Colors
= 30/70
= 3/7
So, there is 3/7 chances to next person to have blue eyes.
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Answer:
3/7
Step-by-step explanation:
Solve, 3|x−4|−6≤9.
Graph the solution on the number line.
Answer:
Step-by-step explanation:
Is 7 a solution of 5x - 3 = 12 ? Justify your answer
Answer:
Step-by-step explanation:
NO x=3
Tracey paid $145 for an item that was originally priced at $360. What percent of the original price did Tracey pay?
Round your percentage answer to two decimal places.
Do NOT include a
%
symbol with your answer.
Answer:
Tracy paid 40.28 percent of the total price.
Find the average rate of change of f (x)=x-2√x on the interval [1, 9].
The average rate of change of f(x) = x - 2√x on the interval [1, 9] is 1/2.
What is average rate of change?It is a measure of how much the function changed per unit, on average, over that interval.
We have,
f(x) = x - 2√x
On the interval [1,9].
[1, 9] = [a, b]
The average rate of change:
= f(b) - f(a) / b - a
= f(9) - f(1) / 9 - 1
= [(9 - 2√9) - (1 - 2√1)] / 8
= [ (9 - 6) - (1 - 2) ] / 8
= (3 + 1) / 8
= 4 / 8
= 1/2
Thus the average rate of change of f(x) = x - 2√x on the interval [1, 9] is 1/2.
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4-5 what are the answers!! please give correct answers ill give brainlist!!!!
Answer:
4a.) 0.0005 = 5 x 10 to the exponent -4
4b.) 0.0025 = 2.5 x 10 to the exponent -3
5a.) 2 x 10 to the exponent -2 = 0.02
5b.) 16 x 10 to the exponent -4 = 0.0016
Tip:
The number being multiplied has to be less than or equal to 10. Count the places the decimal point moves from the end of the number to the number in the original equation.
Example: 0.05 = 5 x 10 to the exponent -2
0.05 has 2 spaces for the decimal point to move up to 5 going right. We use a negative decimal because 0.05 is less than 5. Here is an example where the exponent is positive:
5000 = 5 x 10 to the exponent 3
5000 has 3 spaces for the decimal point to move down to 5 going left.
Solve the linear equation 7x+4^2=12x-8
Answer:
x = 24/5
Step-by-step explanation:
Is 7x+y+3=y a linear equation
Answer:
7x+y=3 is not a linear equation.
The zookeeper mentioned that the scale used to weigh some of the larger animals can be off by 12 pounds. The scale read 438.2 lbs. for one of the larger animals. If the animal’s actual weight is x pounds, write an expression to represent the number of pounds the weight on the scale is from the actual weight of the animal. Then explain the range of values in which the actual weight might be.
The actual weight of the animal is between 450.2 and 426.2 pounds
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Inequality can be used to show that two variables or numbers are not equal to each other.
The weight of the larger animals can be off by 12 pounds. Let x represent the actual weight of the animal. If the scale reads 438.2 lbs, hence:
|x - 438.2| = 12
x - 438.2 = 12; or -(x - 438.2) = 12
x = 450.2; or x = 426.2
The actual weight of the animal is between 450.2 and 426.2 pounds
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how do you solve this problem
chan is filling a box with 1 inch cubes. he filled the bottom layer with 5x1 inch cubes long, and 4x1 inch cubes wide. The box is 6 inches tall.
Answer:
120 cubes will fill the box
Step-by-step explanation:
You want to know the number of 1-inch cubes it takes to fill a box that is 5 cubes long, 4 cubes wide, and 6 inches tall.
LayerTo cover the bottom of the box, Chan needs to make an array of cubes that has 4 rows with 5 cubes in each row. That layer will have ...
4 × 5 = 20 . . . . cubes per layer
VolumeEach layer occupies 1 inch of height, and the box is 6 inches high. The volume of the box will be filled with six of these layers. That will take this many cubes:
(6 layers) × (20 cubes/layer) = 6 × 20 cubes = 120 cubes
Chan will need 120 cubes to fill the box.
During a game of one-on-one, Rodney and Justin scored 39 points altogether. If Justin lost the game by 1 point, how many points did each player score? Use a system of linear equations in two variables to solve the problem
The points scored by Rodney is 20 points.
The points scored by Justin is 19 points.
How many points did each player score?x + y = 39 equation 1
x - y = 1 equation 2
Where:
x = points scored by Rodney
y = points scored by Justin
In order to determine the points scored by Justin, take the following steps:
Subtract equation 2 from equation 1 :
2y = 38
Divide both sides of the equation by 2
y = 38/2
y = 19 points
To determine the value of x, substitute for y in equation 2
x - 19 = 1
Combine similar terms: x = 19 + 1
Add similar terms together: x = 20
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What is the slope of the line represented by the equation y = x - 3?
O-3
--3--
45
O3
Answer:
Slope is 1
Step-by-step explanation:
From the general linear equation:
[tex]{ \rm{y = mx + c}}[/tex]
m is the slope
Comparing with the equation given:
[tex]{ \rm{y = { \green{1}}x - 3}}[/tex]
help help help.........
Answer:
The answer is A
1. Rhonda is competing on a game show. First she randomly decides on a target of 1 or 2 and chooses card A or B. Then she spins the spinner on the other side
of the card.
a) What is P(1) if Rhonda chooses spinner A? P(1|A) = __
b) What is P(1) if Rhonda chooses spinner A? P(1|B) = __
c) Choose the correct symbol to make the statement true
Using probability we get (a) P(1|A) = 1/2 and (b)P(1|B) =3/4 , hence P(1|A) ≠ P(1|B).
Probability is the study of chance . The part of mathematics known as probability deals with fractional representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, 0 denotes the event's impossibility and 1 denotes certainty.
Probability is calculated by the fraction possible outcomes ÷ total outcomes
a) The first spinner has the total 4 sections. so there are 4 total outcomes.
Favorable outcome = 1
Total number of favorable outcome=2
Probability P(1|A) = favorable outcome ÷ total outcome
∴ P(1|A) =2/4 or P(1|A) =1/2
b) The first spinner has the total 4 sections. so there are 4 total outcomes.
Favorable outcome = 1
Total number of favorable outcome=3
Probability P(1|B) = favorable outcome ÷ total outcome
∴ P(1|B) =3/4 or P(1|B) =3/4
c)Therefore P(1|A)≠P(1|B) so the events A and B are dependent.
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