Answer:
10
Step-by-step explanation:
10+3 = 13
13 x 7 = 91
Answer:
7(3x)=91
21x=91
x=91/21
What is the exact value of cos 3pi/4
Answer:
cos(3π/4) = -√2/2
Step-by-step explanation:
According to the unit circle, the exact value of cos(3π/4) is -√2/2.
The exact value of cos 3π/4 is - 1/√2
Here we have to find the exact value of
cos 3π/4
Since we know that,
The values of all trigonometric functions depending on the ratio of sides of a right-angled triangle are defined as trigonometric ratios. The trigonometric ratios of any acute angle are the ratios of the sides of a right-angled triangle with respect to that acute angle.
We can write,
cos 3π/4 = cos(π/2 + π/4)
Since we know that,
cos(π/2 + θ) = - sin θ
Therefore,
⇒ cos(π/2 + π/4) = - sin π/4
= - 1/√2
Hence,
⇒ cos 3π/4 = - 1/√2
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please ! solve the following equation algebraically: 2x²=50
Answer:
5,-5
Step-by-step explanation:
-3 to the 3rd power + 2
Answer:-7
Step-by-step explanation: -3^3+ 2
-9+2= -7
Hey can somebody help me
Answer:
x^2/3
Step-by-step explanation:
Exponent properties!
x^4*x^9 for example,
we add the exponents because the base of the exponents is the same.
now back to the question
x^4/3 * x^2/3
we add those exponents!
6/3 or 2
so we have( x^2)^1/3
^2 and ^1/3 multiply!
we have x^2/3
If a card is randomly selected, what is the probability that the card is any one suit, e.g., a diamond, heart, spade, or club?
Step-by-step explanation:
there are 13 cards per 4 suits, totalling 52 cards in an entire deck
13 represents an entire 1 suit out of 52 cards
13/52 = 0.25
thus your answer is 0.25% or 1/4
Which graph shows the point (-4, 0)?
A.
B.
C.
D.
Answer:
hey. pls post the graphs with the question so we may help you. you can add the pictures as an attachment.
please help! (listing BRAINLIST and giving points) :)
Answer:
7 hrs
Step-by-step explanation:
$187 for 11 hrs
$119 for x hrs
write a proportion.
187/11 = 119/x since Reuben is making money at the same rate.
solve for x:
187x = 1309
x=7
7 hours
Answer:
7 hours
Step-by-step explanation:
Reuben works for 11 hours to earn $187
This means, his earnings rate is $187 per 11 hours of work
In 1 hour he would earn = 187/ 11 = $17
Therefore, he earns $17 in 1 hour
To find out how many hours he has to work to make $119, we multiply this by the rate.
He will earn $119 in = $119 x (1 hour/ $17) = 7 hours
Reuben has to work 7 hours to make $119
Can someone help me please
Answer:
options 2, 3 and 5
Step-by-step explanation:
first of all, because
n²+3n+2n = 6n simplifies to n²+5n = 6n, which simplifies to
n² = n, which is not true for all n not equal to 0 or 1.
option 6 is not a valid reason, as it made a calculation error.
options 1 and 4 make invalid simplifications.
Which is the best estimate of 2127
Answer:
20
Step-by-step explanation:
Have a nice day :)
These box plots show daily low temperatures for a sample of days in two
different towns.
Town A
10 15 20
30
55
HI
Town B
5
20
30
40
55
H
0 5
10
15
20
45
50
55 60
25 30 35 40
Degrees (F)
Which statement is the most appropriate comparison of the centers?
O A. The median for town A, 30°, is less than the median for town B,
40°
B. The mean for town A, 20°, is less than the mean for town B, 30°
C. The median for town A, 20°, is less than the median for town B,
30°
O D. The median temperature for both towns is 30°.
Answer:
The answer is:
C. The median for town A, 20°, is less than the median for town B, 30°.
Step-by-step explanation:
Median is the middle (center) value.
Option (C) the median for town A, 20°, is less than the median for town B, 30°.
What is box plot?Box plot is a type of chart often used in explanatory data analysis. A graphical rendition of statistical data based on the minimum, first quartile, median, third quartile, and maximum.
For the given situation,
The diagram shows the box plot of the daily low temperatures for a sample of days in two different towns.
From the box plot, the median of town A is 20° and the median of town B is 30°.
From the data,
⇒ [tex]20 < 30[/tex]
Hence we can conclude that option (C) the median for town A, 20°, is less than the median for town B, 30°.
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Find the value of X and Y
Answer:
y=60 degrees ; x=120 degrees.
Step-by-step explanation:
All triangles' angles must add up to 180 degrees. An equilateral triangle has 3 equal sides and degrees. If it gives the angle of one all the other angles are the same. For x you see the parallel line below it with the line to the left going through with the same angle as the one below. The angles are the same and if it is labeled in one then it is the same in the other.
i need help please if you know the answer
Answer:
The mean is 19.
Step-by-step explanation:
To find the mean, you add up all of the numbers then divide by how many numbers there are. So you would do 3+8+10+11+14+17+22+24+25+35+40, then divide it by 9 since there are 9 numbers shown, which gets you to 19.
A bag with 12 marbles has 5 red marbles, 3 yellow marbles, and 4blue marbles. A marble is chosen from the bag at random. What is the probability that it is red? Write your answer as a fraction in simplest form.
Answer:
5/12 is already in simplest form
Step-by-step explanation:
12m = 5r + 3y + 4b
red is chosen = 5r / 12 = 5/12
Step-by-step explanation:
the answer is 5/12. It's quite simple
if x varies directly as y,write a formula connecting x and y y.use k as a constant of variaton.
(a) Find the standard error of the mean for each sampling situation (assuming a
normal population). (Round your answers to 2 decimal places.)
Standard
Error..
|
(a) o = 48, n = 16
(b) o = 48, n = 64
(c) 0 = 48, n = 256
Answer:
a
Step-by-step explanation:
ok
Can y’all help me on question 32?!
Answer:
b. 96
Step-by-step explanation:
triangle area= b x h / 2
5 x 6 /2= 15
15 x 4 (4 triangles)= 60
square area= b x h
6x6=36
36 + 60 = 96
The product of two consecutive negative integers is 600. What is the value of the lesser integer?
–60
–30
–25
–15
Answer:
-25
Step-by-step explanation:
-24×(-25)=600
Hope this helps! :)
Answer: It's -25
edg 2023
Hazel McCurry offered $149,400 for a home that had been priced at $439,500. The seller agreed to the offer. If she made a $44,000 down payment , what is the mortgage loan amount ?
Please quickly need this before 30 mimutes
Answer:
x = 4.48
Step-by-step explanation:
read the picture
My rule is: y = 1/3x + 11/15
Find y, if x=1
Find y, if x=6
Aku writes an average of 120 words on a sheet of paper.how many sheets of paper will she need to write 5400 words
Answer:
sheet needed=45
Step-by-step explanation:
1 sheet=120 words
x sheet=5400 words
x sheet=5400/120
x sheet =45
A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is
Answer:
[tex]r =5[/tex]
Step-by-step explanation:
Given
[tex](h,k) = (-3,2)[/tex] -- center
[tex](x,y) = (1,5)[/tex] --- pass through
Required
The radius (r)
The equation of circle is:
[tex](x - h)^2 + (y - k)^2 = r^2[/tex]
So, we have:
[tex](1 - -3)^2 + (5 - 2)^2 = r^2[/tex]
[tex](4)^2 + (3)^2 = r^2[/tex]
[tex]16+9 = r^2[/tex]
[tex]25 = r^2[/tex]
Take square roots of both sides
[tex]5 = r[/tex]
[tex]r =5[/tex]
In 42 - 15 = 27, the number 42 is called the
the number 15 is called the
and the number 27 is called
Answer:
The Answer to the Ultimate Question of Life, the Universe, and Everything is 42
Step-by-step explanation:
In this equation, the number 42 is called a minuend.
15 is a subtrahend because it is being subtracted from another number.
The number 27 would be called the difference.
The number of surface flaws in plastic panels used in the interior of automobiles has a Poisson distribution with a mean of 0.03 flaws per square foot of plastic panel. Assume an automobile interior contains 10 square feet of plastic panel. (a) What is the probability that there are no surface flaws in an auto's interior
Answer:
0.7408 = 74.08% probability that there are no surface flaws in an auto's interior.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of successes
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
Mean of 0.03 flaws per square foot of plastic panel.
This means that [tex]\mu = 0.03n[/tex], in which n is the number of square feet.
Assume an automobile interior contains 10 square feet of plastic panel.
This means that [tex]n = 10[/tex], so [tex]\mu = 0.03(10) = 0.3[/tex]
What is the probability that there are no surface flaws in an auto's interior?
This is [tex]P(X = 0)[/tex]. So
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = x) = \frac{e^{-0.3}*(0.3)^{0}}{(0)!} = 0.7408[/tex]
0.7408 = 74.08% probability that there are no surface flaws in an auto's interior.
A cereal box is 12 cm tall.the area of a base is 7cm square.what is the volume
The volume = Base × height = 12× 7 = 84 Cm³
Answer:
84
Step-by-step explanation:
Question 6.
Find the volume.
Answer:
128π ft³ ; 401.92 ft³
Step-by-step explanation:
The volume of the cylinder Given above :
Volume of cylinder, V = πr²h
r =Radius = 4 ; h = 8 ft
V = π * 4² * 8
V = 16 * 8 * π
V = 128π ft³
Using π = 3.14
V = 128 * 3.14 = 401.92 ft³
what is the value of x to the nearest tenth
Answer:
tan90°=p/b
or,1/0=10/x
therefore x=0
[tex] \frac{11}{3} \times \frac{23}{5} [/tex]
A book contains the following recommend weight for kangaroos:" Give the kangaroo 120 pounds for the first 5 feet plus 5 pounds for every inch over 5 feet tall." Using this description, what height corresponds to the recommended weight of 180 pounds?
Answer:
A 180-pound kangaroo's recommended height is 6 feet.
Step-by-step explanation:
Since 120-pound kangaroo is 5 feet tall and for every inch over this height we add 5 pounds to the total weight, we can make this formula. [tex]120+x=180[/tex]. Using this we can figure out the weight difference between a 120-pound kangaroo and a 180-pound kangaroo. After solving for x we get [tex]x=60[/tex].
Now that we know the 180-pound kangaroo weighs 60 more pounds than a 120-pound kangaroo we can divide that weight difference by 5 to figure out the height difference. [tex]60/5=12[/tex]
After getting the height difference from the weight difference we can conclude that a 180-pound kangaroo's recommended height is 5 feet and 12 inches. Since 12 inches = 1 foot we can easily convert 5' 12" to 6'. This means that a 180-pound kangaroo is 6 feet tall.
A farmer wants to make a rectangular field with a total area of 3200^2. It is surrounded by a fence. It is divided into 3 equal areas by fences. What is the shortest total length of fence with which this can be done?
Answer:
18133.333... units
Step-by-step explanation:
the shortest circumference for a given area based on rectangles is a square (all sides of equal length).
we cannot split a square completely into 3 equal area squares (only 4).
the best approach is then to split this main square into 3 equal area rectangles (not equal rectangles).
area of square 3200² = 10240000
a third of that area is 3413333.333...
now, splitting the main square into 3 equal "strips" of land creates 3 narrow and long rectangles, which is bad for minimizing the circumference. the best solution is to get as closely as possible to a square shape.
that we get by splitting one side in half and go in as far as the land area allows, which would be
half a side = 1600
3413333.33.../1600 = 2133.33...
so, we get 2 areas of 1600 × 2133.33...
and one area of (3200-2133.33...)×3200 = 1066.66...×3200
the length of fence needed is then
around the main square = 4×3200 = 12800
plus one length of fence between the first 2 parts : 2133.33...
plus one intensive long side between the first 2 parts and the remaining third part : 3200
in total : 18133.33...
to check : the three slices would require the 12800 plus 2 long lines inside between the 3 slices : 2×3200
in total : 19200
and an attempt to simply build one long strip of 3 equal area squares next to each other :
the side length of one such square is
sqrt(341333.33...) = 1847.520861...
as fence we would need 6 times that side length for the top and the bottom of the long strip, 2 times that side length for the sides left and right if the strip, and 2 times inside as additional delimiters between the 3 squares.
in total : (6+2+2) × 1847.520861... = 10×1847.520861...
= 18475.20861...
this is all larger than the original solution.