Answer:
Round it to the nearest hundredth
Step-by-step explanation:
A bicycle is $240 and the sales tax is 9%. How much money is the tax?
Answer:
$21.60
Step-by-step explanation:
240 x .09 = 21.60
What is a song or poem describing the four operations of integers?
Step-by-step explanation:
We have four fundamental operations on integers. They are addition, subtraction, multiplication, and division.
2) Ms. Smith, a math teacher, recently gave a mathematics quiz in her class. The ten quiz scores were: 89 87 93 90 12 91 88 87 83 91
a) Based on the test scores above, would you say the class did well? Why or why not?
b) If you were Ms. Smith, which average would you use to describe the data: mean, median, or mode?
Answer:
Step-by-step explanation:
The average is 81 a low B, but if you throw out the low score it rises to 88.8, a high B.
I would use the median 88, 89 since it is higher and is a more accurate representation of the majority of the class
A) Yes, we can say that the class did well.
B)I would choose median to describe the data.
How to find mean, median and mode?
Mean simply means average of the data given, Here,
[tex]Mean=\dfrac{89+87+93+90+12+91+88+87+83+91}{10} =80.9[/tex]
Median is the value of data set (when arranged in ascending order) that divides it into two sets and is often called the middle number. When no. pf values in data set is even, the median is N/2.
Here,
[tex]Median=\dfrac{10}{2} ^{th}=5^{th} term=88[/tex] (data taken in ascending order)
Mode is the value which has largest frequency among the all the other values.
Here, Mode is 87 and 91.
A) The class did well if we consider the data from point of view of its median and mode, but the average value is a bit low as we have a drastically low value that is 12.
B) I would describe the data by median because the class mean is very low and as there are 2 mode values, it is not the best representation of the score. The median of the set is a high and singleton value, therefore the most accurate measure of central tendency would be median.
To know more about mean, median, mode refer:https://brainly.com/question/25750771
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[tex]65 - 2 \times b = 55[/tex]
Answer:
b = 5
Step-by-step explanation:
- add -65 at the two members:
65-65 -2b = 55-65
-2b = -10
- divide the two members for -2
b = 5
in January, Jamie pays $2.00 for a tube of toothpaste.
When she buys the same brand and size toothpaste in
February, she pays $2.25. what is the percent increase in the price of the toothpaste from january to february? round to the nearest tenth of a percent?
please hurry
Answer:
12% or 13% rounded
Step-by-step explanation:
.25 of 2.00 is .125 or 12% or 13% rounded
Find the zeros of the polynomial m2 - 11m + 18.
Answer:
Step-by-step explanation:
The zeroes are the values of such that
m² - 11m + 18 = 0
Quadratic formula:
m = [11 ± √(11² - 4∘1∘18)]/[2∘1]
= [11 ± √49]/2
= [11 ± 7]/2
= 9, 2
First use front end rounding to round each number and estimate the answer. Then find
the exact answer.
6.48
X 1.8
Answer:
Step-by-step explanation:
The answer should be somewhere near 6* 2 = 12 which is the first answer. Do not put an exact answer when you are asked for an estimate.
The exact answer is 6.48 * 1.8 = 11.664 which makes 12 look like a pretty good estimate.
Which of the following is used by a seller to deceive a buyer? a. bait and switch b. contest c. display d. introductory offer
multiply the following
1)34/7×3
2)3/8×7
3)3/4×7
Answer:
1) 102/21
2) 21/51
3) 21/24
Step-by-step explanation:
A publisher reports that 35% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 190 found that 32% of the readers owned a laptop. Is there sufficient evidence at the 0.10 level to support the executive's claim
Answer:
The pvalue of the test is 0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim
Step-by-step explanation:
A publisher reports that 35% of their readers own a laptop.
This means that the null hypothesis is:
[tex]H_0: p = 0.35[/tex]
A marketing executive wants to test the claim that the percentage is actually different from the reported percentage.
This means that the alternate hypothesis is:
[tex]H_{a}: p \neq 0.35[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
0.35 is tested at the null hypothesis:
This means that [tex]\mu = 0.35, \sigma = \sqrt{0.35*0.65}[/tex]
A random sample of 190 found that 32% of the readers owned a laptop.
This means that [tex]X = 0.32, n = 190[/tex]
Z-statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.32 - 0.35}{\frac{\sqrt{0.35*0.65}}{\sqrt{190}}}[/tex]
[tex]z = -0.87[/tex]
pvalue of the test and decision:
As we are testing that the mean is different from a value and z is negative, the pvalue of the test is 2 multiplied by the pvalue of z = -0.87
Looking at the z-table, z = -0.87 has a pvalue of 0.1922
2*0.1922 = 0.3844
0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim
Gavin, Colin and Dan share some sweets in the ratio 4:5:3. Gavin gets 20 sweets. How many sweets are there altogether?
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Answer:
60
Step-by-step explanation:
Gavin has 20/4 = 5 times as many sweets as his corresponding number of ratio units. The total number of ratio units is 4+5+3 = 12, so the total number of sweets is 5×12 = 60.
There are 60 sweets altogether.
_____
They are divided as ...
Gavin: 20Colin: 25Dan: 15Which equation best matches the graph shown to the right?
Answer:
y=1x+20
Step-by-step explanation:
character requirement
Area of Composed figures
PLEASEEE RN
Answer:
33 ft²
Step-by-step explanation:
The area of the outdoor carpet = area of trapezoid + area of rectangle + area of triangle
✔️Area of trapezoid = ½(a + b)h
Where,
a = 6 ft
b = 3 ft
h = 11 - 9 = 2 ft
Area of trapezoid = ½(6 + 3)*2 = 9 ft²
✔️Area of rectangle = L*W = 7 *3 = 21 ft²
✔️Area of triangle = ½bh
b = 2 ft
h = 3 ft
Area = ½*2*3 = 3 ft²
✅Area of the outdoor carpet = 9 + 21 + 3 = 33 ft²
Jocelyn was able to get a great interest rate on her house. She financed $150,000 for 15 years with an interest rate of 2.75%.
How much will she pay in interest over 15 years?
61,875
By the time she pays off her mortgage, how much total will she have spent for her house?
Answer:
She will pay $33,228 in interest over 15 years for a mortgage of $150,000 with an interest rate of 2.75%.
By the time she pays off her mortgage in 15 years, she will have spent $183,228 total for her house.
Step-by-step explanation:
Hi what is 2+2 don't answer that but hi I'm Layla
The answer is 4! Please give brainliest it is very easy question and answer unless you're a few months old, which you're probably not that smart to be here. Anyways, go continue whatever else ur doing i guess
find a20 of a geometric sequence of the first few terms of the sequence given by -1/2;1/4;-1/8;1/16
Answer:
[tex]a_{20} = 1/1048576[/tex]
Step-by-step explanation:
Given
[tex]Sequence: -1/2;1/4;-1/8;1/16[/tex]
Required
Determine [tex]a_{20[/tex]
Since it is a geometric sequence, first we need to calculate the common ratio (r)
[tex]r = \frac{a_2}{a_1}[/tex]
From the sequence:
[tex]a_2 = 1/4[/tex]
[tex]a_1 = -1/2[/tex]
[tex]a_1[/tex] is the same as [tex]a[/tex]
So:
[tex]r = \frac{a_2}{a_1}[/tex]
[tex]r = \frac{1/4}{-1/2}[/tex]
[tex]r = -1/2[/tex]
[tex]a_{20[/tex] is then calculated as:
[tex]a_n = ar^{n-1}[/tex]
Where
[tex]n = 20[/tex]
[tex]a_{20} = ar^{20-1}[/tex]
[tex]a_{20} = ar^{19}[/tex]
[tex]a_{20} = (-1/2) * (-1/2)^{19}[/tex]
Apply law of indices
[tex]a_{20} = (-1/2)^{1+19}[/tex]
[tex]a_{20} = (-1/2)^{20}[/tex]
Evaluate the exponent
[tex]a_{20} = 1/1048576[/tex]
Find the conjugate and product of
2-i5
Answer: [tex]2+i5,\ 29[/tex]
Step-by-step explanation:
Given
Complex number is [tex]2-i5[/tex]
Its conjugate is obtained by changing the sign of the original number i.e. [tex]2+i5[/tex]
The product of the two numbers is
[tex]\Rightarrow (2-i5)(2+i5)=2^2-(5i)^2\quad \quad [(x+y)(x-y)=x^2-y^2]\\\\\Rightarrow (2-i5)(2+i5)=4-25i^2\\\\\Rightarrow (2-i5)(2+i5)=4+25=29[/tex]
If Anna divides the ingredients equally into 4 pots, how many cups of onions will she need in each pot?
Answer:
1/4 of however many cups of onions she starts with
Step-by-step explanation:
I see no attachment and it doesn't say in your question how many onions she has. All you have to do is take the total amount of onions and divide it by 4 since she is splitting her total into 4 pots.
Amir made an 8 by 6 array of cupcakes.Then he broke it into two smaller arrays.Which two products can Amir all to find the total number of cupcakes?
Answer:
48
Step-by-step explanation:
All you need to do since this is an array all you need to do is multiply the 2 smaller ones together.
what is the degree of the polynomial 9m4−4m3+8m−5
Answer:
4
Step-by-step explanation:
The highest/exponent of the variable is the degree of the polynomial.
[tex]9m^{4} - 4m^{3} + 8m - 5[/tex]
Here, the highest degree of the variable m is 4
So, degree of the polynomial = 4
ZABD and DBC are supplementary angles
What is the measure of x?
x = [?]
D
As
x 78
B
>C
Angles are not chanm to scale
Answer:
f
Step-by-step explanation:
<x=102°
Step-by-step explanation:
<x+78=180 being supplementary
<x=180-78=102
Pls help me on this question!!
Answer:
D
Step-by-step explanation:
7/10 + 3/10 = 1
Answer:
D
Step-by-step explanation:
4.
A machine makes a staple from 20mm of wire. How many
staples will it make from 50cm of wire?
Answer:
25
Step-by-step explanation:
(50 cm (centimeters))/(20 mm (millimeters))
Result:
25 m/m (meters per meter)
25
2500%
Unit conversions:
15.53 mi/km (miles per kilometer)
25 mi/mi (miles per mile)
25 squares
Interpretation:
length ratio
Solve the following
NO BOTS OR PEOPLE WANTING POINTS
Answer:
-1
Step-by-step explanation:
Can someone please help me find the area of the figure.
Answer:
area = 41 ft²
Step-by-step explanation:
area = (3x3) + (4x8) = 41 ft²
What is the value of x ?
Answer:
x= - square root 141 or x= square root 141
Which system of equations has infinitely many solutions?
Answer:
Step-by-step explanation:
ìť ìś the 2ńď òñè
The length of a rectangle is 5 less than twice the width, and the area of the rectangle is 52 ft^2. Find the dimensions of the rectangle.
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Answer:
6.5 ft wide by 8 ft long
Step-by-step explanation:
We can let x represent the width of the rectangle. Then the length is ...
L = 2x -5
and the area is ...
A = LW = (2x -5)(x) = 52
2x² -5x -52 = 0 . . . . . put in standard form
(2x -13)(x +4) = 0 . . . . factor
x = 6.5, -4 . . . . . . . . . . values that make the factors zero
The length is then ...
L = A/W = 52/6.5 = 8
or
L = 2W -5 = 2(6.5) -5 = 13 -5 = 8
The rectangle is 6.5 feet wide and 8 feet long.
CAN SOMEONE PLEASE ANSWER THIS QUICKLY I DONT GOT TIME
Answer:
1: 3/32. 2: 3/8. 3: 1/20
my dear
Is the sequence arithmetic? If so, identify the common difference.
13, 20, 27. 34, ...
Answer:
the common difference is = 7
Step-by-step explanation:
1st term is 13
2nd term is 20
d = 2nd -1st
d= 20-13
d= 7
Answer:
Yes . It is arithmetic & the common difference of them is 7 .
Step-by-step explanation:
Hope this helps ;)
