Answer: Number of hardback = 32
Number of paperback = 117
Step-by-step explanation:
Let the number of hardback books be represented by x.
Let the number of paperback books be represented by y.
Based on the information given, we can form an equation which will be:
x + y = 149 ......... i
3.50x + 0.75y = 199.75 ...... ii
Multiply equation i by 3.50
Multiply equation ii by 1
3.50x + 3.50y = 521.50 ...... iii
3.50x + 0.75y = 199.75 .....iv
Subtract equation iv from iii
2.75y = 321.75
y = 321.75 / 2.75
y = 117
Number of paperback = 117
Since x + y = 149
x = 149 - y
x = 149 - 117
x = 32
Number of hardback = 32
Find AB round to nearest tenth
Answer:
Step-by-step explanation:
take 55 degree as reference angle
using sin rule
sin 55=opposite/hypotenuse
0.81=AB/14
14*0.81=AB
11.34=AB
11.3=AB
Answer:
9.8
Step-by-step explanation:
I think so, probably
The length of a rectangle is represented by (2x2 - 5x + 5) cm and the width is represented by (x2 + 4x - 3)cm. What is the representation of the perimeter?
Answer:
its A
Step-by-step explanation: i guessed
Helpp pretty please
Answer:
b
Step-by-step explanation:
PLEASE HELP, I WILL MARK BRAINLIEST!
Answer:
5
Step-by-step explanation:
There are 5 different segments.
If the radius of the circle is 7.2cm what is the circumference to the nearest tenth?
Answer:
About 45.22
Step-by-step explanation:
Radius x 2 x π
What is the equation of the sinusoid?
Will mark brainliest plz help
The general equation of the sinusoid is [tex]f(x)=sinx[/tex]
What is sinusoidal?"A sine wave or sinusoidal is a continuous or mathematical curve which is used to describe a smooth periodic oscillation."
We know,
A Sinusoidal function is a function that can be modelled using a sine wave.
The sine graph repeats itself after a period of 2π, which shows the function is periodic with a period of 2π.
f (x) = sin x and f (x) = cos x are similar apart from a phase shift, both functions are sinusoidal.
f (x) = tan x is a trigonometric function, but its graph is completely different.
The graph of a sinusoidal function is a smooth periodic graph.
The graph is continuous all over the x-axis and also it repeats itself after every fixed interval.
∵ A phase shift is the only difference between sine and cosine, any sinusoidal function that can be modelled using sine can also be modelled using cosine.
The general sinusoidal function is [tex]f(x)=[/tex]±[tex]a.sin(b(x+c))+d[/tex]
Where as,
± controls the reflection across the x - axis, coefficient a controls the amplitude , constant d controls the vertical shift, coefficient b controls the horizontal stretch.
∴ The general equation of the sinusoid is [tex]f(x)=sin x[/tex]
Learn more about Sinusoidal function here
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Answer:
y= sin (1/2x)
Step-by-step explanation:
ALGEBRA 1 / GRAPHING
Answer:
first and third from up to down
Step-by-step explanation:
you use a dashed line if the inequality does not have an equal so is just > or <
Selecciona la alternativa donde NO se ocupan números enteros
a) Recorrido de un ascensor.
b) La temperatura ambiental.
c) La talla de zapatos.
Answer:
Selecciona la alternativa donde NO se ocupan números enteros
a) Recorrido de un ascensor.
b) La temperatura ambiental.
c) La talla de zapatos
Factor the expression
9x - 36
Answer: 9(x−4)
Step-by-step explanation: Hope this help :D
Which of the following equations is used to calculate the probability of event A happening, given that event B has occurred?
Answer:
B
Step-by-step explanation:
Not much to explain
please help for all equations please. use the pythagorean theorem!!! i will give brainlyiest to the most helpful answer
Answer:
Do 15^2 +10^2=c^2 than put answer Into \sqrt()
Step-by-step explanation:
Step-by-step explanation:
Ok, so the pythagorean theorem is a^2 + b^2 = c^
where c is the hypotenuse and b and a are the the other 2 sides
9) 10^2 + b^2 = 15^2
100 + b = 225
-100 -100
b^2 = 125
sqrt of 125 = 5
b = 5
10) 2^2 + 5^2 = C^2
4 + 25 = c^2
sqrt of 29 = c
c = [tex]\sqrt{29\\}[/tex]
11) 42^2 + a^2 = 48^2
1764 + a^2 =2304
-1764 -1764
a^2 = 540
a = [tex]6\sqrt{15}[/tex]
The sum of two numbers is 41. The larger number is 21 more than the smaller number. What are the numbers?
Please help!
Answer:
srry its 31 and 10
Step-by-step explanation:
the numbers are 20 and 21
Hope I helped! :)
Does the line through the points listed in this table of values have a slope greater or less than 1? Explain how you know.
Answer:
no points are listed
Step-by-step explanation:
The circle is divided into 3600 equal parts. Point O represents the center of the circle. The measure of angle
Answer:
0.1°
Step-by-step explanation:
Okay so, a circle is 360° and the circle is divided into 3600 parts. So, to find the measurement of one of those angles, we would do 360°/3600= 0.1°.
HELP ASAP!! Find the total area of the figure below. Round your answer to the nearest tenth
Answer:
area = 88 mi²
Step-by-step explanation:
all vertical dimensions = 8/2 = 4 mi
area = (4 x 11.9) +(4 x 6.1) + (4 x 4) = 88 mi²
I NEED HELP ASAP THIS IS DUE IN 10 MIN HELP MEE
Answer:
Step-by-step explanation:
i cant see it. its not letting me zoom in ill help you but i cant see it
Answer:
8, 8
Step-by-step explanation:
it would be 8, 8 because all the way in the upper right hand corner would be where the x and y axis meet and equal 8, 8
Anika buys a pair of shin guards for $8.58 and several pairs of soccer socks for $4.29 per
pair. If she spends $25.74 before taxes, how many pairs of socks does Anika buy?
Answer:
The answer is 4 pairs of socks
Step-by-step explanation:
So basically long story short, this is a simple division and multiplication problem.
Match each expression in List A with an equivalent expression from List B.
Answer:
B——1
C——3
The answer u got in A and D r correct
Step-by-step explanation:
B=5x+10y-20y+5x=10x-10y=10(x-y)—- 1
C——3
write the equation of the line that passes through the points (-9,-5) and (-2,3). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
(no links please)
Answer:
y= 8/7x+ 37/7 for the equation that the line passes
Answer:
y+5=8/7(x+9)
Step-by-step explanation:
tudents in a fitness class each completed a one-mile walk or run. The list shows the time it took each person to complete the mile. Each time is rounded to the nearest half-minute.
5.5, 6, 7, 10, 7.5, 8, 9.5, 9, 8.5, 8, 7, 7.5, 6, 6.5, 5.5
Which statements are true about a histogram with one-minute increments representing the data? Select three options.
A histogram will show that the mean time is approximately equal to the median time of 7.5 minutes.
The histogram will have a shape that is left-skewed.
The histogram will show that the mean time is greater than the median time of 7.4 minutes.
The shape of the histogram can be approximated with a normal curve.
The histogram will show that most of the data is centered between 6 minutes and 9 minutes.
Answer:
A, D, E
Step-by-step explanation:
GOT IT RIGHT ON EDGE
The true statement about the histogram are
(a) the median and the mean are approximately equal(d) the histogram would have an approximately normal curve(e) there are more data elements between 6 and 9.How to interpret the histogram?The dataset is given as:
5.5, 6, 7, 10, 7.5, 8, 9.5, 9, 8.5, 8, 7, 7.5, 6, 6.5, 5.5
Using a statistical calculator, we have the following summary:
Mean = 7.43
Median = 7.5
Notice that the median and the mean are approximately equal
i.e. 7.43 ≈ 7.5
When the mean and the median are equal, the histogram would have an approximately normal curve
Also, when the dataset is sorted, we have:
5.5, 5.5, 6, 6, 6.5, 7, 7, 7.5, 7.5, 8, 8, 8.5, 9, 9.5, 10
Notice that there are more data elements between 6 and 9.
Hence, the true statement about the histogram are (a), (d) and (e)
Read more about histograms at:
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Given the isosceles trapezoid, find the value of x
Answer:
x = 11
Step-by-step explanation:
The lower base angles are congruent, so
4x + 41 = 85 ( subtract 41 from both sides )
4x = 44 ( divide both sides by 4 )
x = 11
pls help me tysmmmm~
Which survey question is biased?
A. "Should the President of the United States serve a six-year term?"
B. "Which meal-breakfast, lunch, or dinner-is your favorite meal of the day?"
C. “During which month do you prefer to go on vacation?"
D. “Do you prefer white bread or healthy, whole-wheat bread?”
Answer:
A.
Step-by-step explanation:
It was trick question because they all are opinionated, but the first one should be an easy yes or no question. However, if you do not like the president then you would say no because of bias. The rest are supposed to be "biased" because they are asking what you prefer.
"Should the President of the United States serve a six-year term?" is question is biased
What is Survey bias?Survey bias is a "systematic error introduced into sampling or testing by selecting or encouraging one outcome or answer over others." Due to this "encouragement" for a particular result, surveys may be biassed and only provide one type of consumer perspective.
For first, It presumes that the responder supports the idea that the President should hold office for a six-year term, which may not apply to all respondents.
However, out of bias, you would say "no" if you didn't like the president. The others are supposedly "biassed" since they inquire about your preferences.
Thus, the biased question is Should the President of the United States serve a six-year term?.
Learn more about Survey bias here:
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2 x 6/7
SEND HELP!!!!!!!!!!!
Answer: C. 2 6/7
Hope that helped! :)
in a group of 52 cards, how many different groups of 5 cards can you be dealt?
Answer:
10
Step-by-step explanation:
50 divided by 5 = 10 and the extra 2 are left out because we are finding how many groups of 5 we can get.
8 x (5+1) = ( _ x 5 ) + (_ x 1)
Answer:
8 x (5+1) = ( 8 x 5 ) + (8 x 1)
Step-by-step explanation:
An insurance company sells a twenty-year term life insurance policy with a face value of $200,000 to a 45-year old woman. Her annual premium is
$990. If the woman dies after paying premiums for six years, what is the insurance company's gain or loss?
A. loss of $194,060
B. loss of $199,010
C. gain of $200,990
D. gain of $205,940
Answer:
her loss of $194,050 because it decreasing every time i think.
Step-by-step explanation:
answer a first one
This pattern repeats every 4 terms. The pattern is square, hexagon, pentagon, triangle. What is the shape in the 13th term of this pattern? sorry if it looks weird i dont know why it does
Answer:
the answer is square
What is the slope of the line?
pleaseeee help
solve:
y= 2x^2+2x-12