Answer:
Step-by-step explanation:
Find cos(x) if [tex]\frac{sin^2x-1}{cosx} =-1[/tex].
A -1
B 2
C 1
D 0
(sin²(x) - 1)/cos(x) = -1
-cos²(x)/cos(x) = -1
-cos²(x) = -cos(x)
cos²(x) - cos(x) = 0
cos(x) (cos(x) - 1) = 0
Then it follows that cos(x) = 0 or cos(x) = 1. But if cos(x) = 0, then the original expression on the left side of the equation would be undefined. Then C is the only valid solution.
Explain how you know that the sums of 12.6,3.1 and 5.4 is greater than 20
Answer:
2.6+3.1+5.4 =21.1
if you have 20
subtract 21.1-20
then you have 1.1
since the difference is 1.1 then we say
21.1>20
What is the solution -3(y+1)+7y=4(y+1)-5
No solution
Y=
All real number are solutions
Find the length the length of AB.
Answer:
19 cm
Step-by-step explanation:
I believed the answer is 19 cm because
AC = 7cm
CB= 12cm
AB= AC+CB
AB= AC+CBAB=7cm+12cm
AB=19cm
I hope this helps, dont hesitate to ask for any question.
.Mark me as brainliest is appreciated.Tq!!
What is the quotient?
4x2 + 5 –
4x + 5 –
4x2 + 5 +
4x + 5 +
Answer:
4x2 + 5 +
Step-by-step explanation:
please mark me brainliest please
Answer:
The second answer choice is correct.
Step-by-step explanation:
4x + 5 + 13/x+5 (This is correct on edge.)
Complete the missing parts of the
table for the following function.
y = (3)*
X -2 -1 0 1 2 3
y| [?] 2 [1
2
1
글을
[]
1
1
Answer:
y=1
Step-by-step explanation:
the missing parts of the table
please help me answer this question.. am giving brainliest
Step-by-step explanation:
We are going to use the following properties of logarithms to solve this problem:
[tex]\log{\dfrac{a}{b}} = \log{a} - \log{b}[/tex]
and
[tex]\log{ab} = \log{a} + \log{b}[/tex]
So we can rewrite the given equation as
[tex]\log{2x^3} - \log{x} = \log{\left(\dfrac{2x^3}{x}\right)} = \log{2x^2}[/tex]
Also,
[tex]\log{16} + \log{x} = \log{(16x)}[/tex]
So we can write
[tex]\log{2x^2} = \log{(16x)}[/tex]
or eliminating the log symbols, we get
[tex]2x^2 = 16x[/tex]
The solutions for the equation above are
[tex]x = 8\:\text{and}\: 0[/tex]
Compute and express each value in scientific notation. (please show work)
Answer:
(9 × 10⁴) (1.6 × 10³) / (2 × 10⁵) ( 3 × 10⁴) (1.2 × 10⁴)
what is statistics ???
explain !!!
Answer:
what is statistics ???
explain !!!
Step-by-step explanation:
Statistics is the science concerned with developing and studying methods for collecting, analyzing, interpreting and presenting empirical data. ... Probability is a mathematical language used to discuss uncertain events and probability plays a key role in statistics.Please mark me as brainliest
using the recursive definition for the following arithmetic sequence, find the second, third, and fourth terms of the sequence. then writes the explicit formula that represents the sequence.
Step-by-step explanation:
[tex]A(2)=A(2-1)+6=A(1)+6=12+6=18[/tex]
2.)
Two clocks are set at 6 A.M. One clock gains 30 seconds every hour and the second clock
loses 1 minute every hour. At what time will the faster clock be 30 minutes ahead of the
second clock?
Difference in time of both the clocks after 1 minute will be the sum of gain in time of one clock and delay in time of the second clock in 1 minute.
First clock will be 30 minutes ahead of the second clock in 20 hours.
It's given in the question,
Both the clocks are set at 6 A.M.First clock gains 30 seconds every hourSince, 1 second = [tex]\frac{1}{60}[/tex] minutes
Therefore, 30 seconds = [tex]\frac{30}{60}[/tex] minutes
= 0.5 minutes
That means first clocks gains 0.5 minutes in every hour.
Second clock loses 1 minute every hourTherefore, difference in both the clocks in every hour = 1 + 0.5
= 1.5 minutes
Difference of 30 minutes will be in the duration = [tex]\frac{30}{1.5}[/tex] hours
= 20 hours
First clock will be 30 minutes ahead of the second clock in 20 hours.
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https://brainly.com/question/11528375
How to multiply 8 with 0.9? Show your method. Link = report.
Answer:
you multiply 8 with 0.9 easy like that
Solve the inequality and graph the solution on the line provided.
7 + 5x < 42
Answer:
x < 7
Step-by-step explanation:
Step 1: Simplify both sides of the inequality.
5x+7<42
Step 2: Subtract 7 from both sides.
5x+7−7<42−7
5x<35
Step 3: Divide both sides by 5.
x<7
For the graph, draw an open circle at 7 and an arrow pointing left.
Hope this helps! :D
Step-by-step explanation:
5x<42-7
5x<35
5x/5<35/5
x<7
An old principle of public landscaping says "build sidewalks last." In other words, let
the people find their chosen paths and then build the sidewalks on the paths. The
picture below shows a campus quadrangle that measures 40 meters by 30 meters.
The path between each building is an illustration of Pythagoras theorem.
The sidewalk between library and humanities is 21.21 metersThe sidewalk between chemistry and humanities is 29.15 metersThe sidewalk between chemistry and humanities is 36.06 metersSee attachment for a copy of the given image.
The sidewalk between library and humanities
This is represented with (a).
The value of (a) will be calculated using Pythagoras theorem.
So, we have:
[tex]a^2 = 15^2 + 15^2[/tex]
[tex]a^2 = 450[/tex]
Take square roots
[tex]a = 21.21[/tex]
Sidewalk between chemistry and library
This is represented with (d).
First calculate the value of (b) and (c)
[tex]c + 15 = 30[/tex]
So:
[tex]c = 15[/tex]
Also:
[tex]b + 15 = 40[/tex]
So:
[tex]b = 25[/tex]
The value of (d) will be calculated using Pythagoras theorem.
[tex]d^2 = b^2 + c^2[/tex]
[tex]d^2 = 25^2 + 15^2[/tex]
[tex]d^2 = 850[/tex]
Take square roots
[tex]d = 29.15[/tex]
The sidewalk between chemistry and humanities
This is represented with (e).
The value of (e) will be calculated using Pythagoras theorem.
[tex]e^2 = d^2 + a^2[/tex]
[tex]e^2 = 850 + 450[/tex]
[tex]e^2 = 1300[/tex]
Take square roots
[tex]e = 36.06[/tex]
Learn more about Pythagoras theorem at:
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A calculator which was bought for Rs.450,was sold at Rs.495.What was the gain percent?
Answer:
10%
Step-by-step explanation:
495-450=45
45x100/450=10
Answer:
Profit made by reselling = 495 - 450 = ₹45
So, percentage =
[tex] \frac{45}{450} \times 100 = 10\%[/tex]
So, gain percentage is 10%
PLEASE MARK ME BRAINLIEST.
Given the function f(x) = 4x², which formula
represents a formula that is shifted up by 3
Answer:
[tex]f(x) = 4 {x}^{2} + 3[/tex]
Step-by-step explanation:
The reason why it is +3 it is because a vertical shift took place which alters the y-interception to be +3 not 0 anymore, making the new formula be the one I've written up there.
Hope this makes sense
:)
3 times the difference of a number and 1 is nine more than the same number. Find the number.
Answer: 6
Step-by-step explanation:
3 (x-1) = x + 9
3x - 3 = X + 9
3x - x = 9 + 3
2x = 12
x = 12/2
x = 6
The correct answer will be "n = 6". A complete solution is provided below.
Let,
The number be "n".
According to the question, the expression will be:
→ [tex]3(n-1)=9+n[/tex]
→ [tex]3n-3=9+n[/tex]
By adding "3" both sides, we get
→ [tex]3n-3+3=9+n+3[/tex]
→ [tex]3n=12+n[/tex]
By subtracting "n" from both sides, we get
→ [tex]3n-n=12+n-n[/tex]
→ [tex]2n=12[/tex]
→ [tex]n=\frac{12}{2}[/tex]
→ [tex]n = 6[/tex]
Thus the above is the appropriate answer.
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When graphed in the (x,y) coordinate plane, at what point do the lines x - y = 12
and y= 2 intersect?
Answer:
(14, 2).
Step-by-step explanation:
x - y = 12
y = 2
Solving this system:
Plug y = 2 into the first equation:
x - 2 = 12
x = 14.
Therefore the point of intersection is at (14, 2).
WILL GIVE BRAINLEST!!!!
PLS HELP...
Maggie's brother is 11 years younger than three times her age. The sum of their ages is 41.
How old is Maggie?
Maggie is_______ years old
Answer:
Maggie is 13 years old.
Step-by-step explanation:
The explanation is attached.
Does the following represent a function?
f = [ (3, -1), (2, 5), (4, -6), (3, 4), (5, -8) ]
Answer:
Not a function
Since x= produces y- -1 and y=-4, the relation (3,-1),(2,5),(4,-6),(3,4),(5,-8) is not a function.
Is 0.30 greater than, less than,
or equal to 0.3?
Answer:
It is equal to 0.3
Step-by-step explanation:
0.30 is 30/100, or 30 hundreths. If you simplify 30/100, you get 3/10, which is the same as 0.3, or 3 tenths
Answer:
equal to
Step-by-step explanation:
the 0 at the end doesn't matter
The _____ measures the variation in the dependent variable that is explained by variables other than the independent variable in simple regression analysis .
a. total sum of squares
b. sum of squares error
c. sum of squares within
d. sum of squares regression
Select the choice that translates the following verbal phrase correctly to algebra:
the difference of m and 7 increased by 15
m − (7 + 15)
7m + 15
(m − 7) + 15
m − 7 ÷ 15
Answer:
(m − 7) + 15
Step-by-step explanation:
Find the first 8 multiples of 92
Answer:
92, 184, 276, 368, 460, 552, 644, 736, 828, 920
Step-by-step explanation:
hope this helps :D
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A tank is in the shape of a cube with edge lengths of 6 feet. Find the number of cubic feet of water needed to fill the tank. Then find the number of cubic yards of water needed to fill the tank.
Answer:
The number of cubic feet of water needed to fill the tank is [tex]216 \mathrm{ft}^{3}$[/tex]
The number of cubic yards of water needed to fill the tank is [tex]8 \mathrm{yd}^{3}[/tex]
Step-by-step explanation:
Given
A tank is in the shape of a cube with edge lengths of 6 feet.
Step 1 of 2
The volume of a cube with edge length [tex]$e$[/tex] is given by:
[tex]V=e^{3}[/tex]
Given that [tex]$e=6 \mathrm{ft}$[/tex], the number of cubic feet of water needed to fill the tank is:
[tex]V=6^{3}[/tex]
[tex]V=216 \mathrm{ft}^{3}[/tex]
Step 2 of 2
The number of cubic yards of water needed to fill the tank is
[tex]V=216 \mathrm{ft}^{3} \times \frac{(1 \mathrm{yd})^{3}}{(3 \mathrm{ft})^{3}}[/tex]
[tex]=8 \mathrm{yd}^{3}[/tex]
Learn more about volume, refer :
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please help me solve it
Answer:
below
Step-by-step explanation:
1 corn equals 700-800 the yellow tiny thing.
so, lets just assume it has 700,
therefore, 700 - 6 = 694
694 + 1 = 695.
or 700 + 1 = 701.
or perhaps
800 - 6 = 794
794 + 1 = 795
or 800 + 1 = 801
but then again it depends on how much the yellow tiny thing is on the corn. bc, it could be 705, 807, or even 900, who knows.
for f(x) = 2x+1 and g(x)=x*2-7
find (f/g) (x).
plz help!!!!!!!!!!!!!!!!!!!
Answer:
X= 30
y= 10
Step-by-step explanation:
(2x+90)=5x ( Opposite angles)
2x+90=5x
5x-2x= 90
3x=90
x=90/3
x= 30°
5x =5(30)=150
2x+90=2(30)+90=60+90=150
3y+150=180
3y=180-150
3y=30
y=30/3
y=10
I hope I helped you^_^
Answer:
Step-by-step explanation:
What are the coefficients of the terms?
5 9
t+8t -t
Step-by-step explanation:
t coefficient = 1
+ 8t coefficient = 8
-t coefficient =( -1)