Answer:
250 of 65% acid
100 gallons of 30% acid
Really sorry if this is incorrect, I had this question on my Lesson 16 test, and I don't know if it's correct or not...
Answer:
250 of 65% acid
100 g of 30% acid
Step-by-step explanation:
A hot air balloon is rising vertically. From a point on level ground 110 feet from the point directly under the passenger compartment, the angle of elevation to the balloon changes from 25 degrees to 32 degrees. How far, the nearest tenth, does the balloon rise during this period
Answer:
17.44 ft.
Step-by-step explanation:
Given,
The Distance of the hot air balloon: 110 ft
Change in elevation, [tex]\theta_1 = 25^0, \theta_2 = 32[/tex]
We know that,
[tex]\tan \theta = \dfrac{Perpendicular}{base}[/tex]
Now,
[tex]\tan \theta_1 = \dfrac{h_1}{110}[/tex]
[tex]\tan 25^0= \dfrac{h_1}{110}[/tex]
[tex]h_1 = 51.294\ ft[/tex]
[tex]\tan \theta_2= \dfrac{h_2}{110}[/tex]
[tex]\tan 32^0= \dfrac{h_2}{110}[/tex]
[tex]h_2 = 68.736\ ft[/tex]
Rise of balloon = 68.736 - 51.294
= 17.442 ft
= 17.44 ft
Hence, the rise of the balloon rise is 17.44 ft.
hi can someone help i have to simplify fractions HELP please it should be easy!!!!
Answer:
18/27=2/3
6/12=1/2
20/10=2/1
10/12=5/6
2/8=1/4
15/30=1/2
8/12=2/3
6/36=1/6
15/20=3/4
30/50=3/5
21/28=3/4
15/24=5/8
Step-by-step explanation:
What is X 2(x+5)=3x+1
Answer:
X = 9
Step-by-step explanation:
a) This problem involves 8-digit binary strings such as 10011011 or
00001010.
i How many such strings are there?
ii. How many such strings end in 0?
iii. How many such strings have l's for their second and fourth digits?
iv. How many such strings have l's for their second or fourth digits?
b) Find how many 9-digit numbers can be made from the digits 1, 2, 3, 4, 5, 6,
7, 8, 9 if repetition is not allowed and all the odd digits occur first (on the
left) followed by all the even digits.
c) How many permutations of the letters A, B, C, D, E, F, G are there in which
the three letters ABC appear consecutively, in alphabetical order?
Answer:
a)
i) With an eight digit binary number, there are 2⁸, or 256 possible combinations.
ii) Each digit is set to 1 or 0 for exactly half of all combinations. This means that half of all strings, or 256 / 2 = 128 strings end with a zero.
iii) 3/4, or 128 + 64 = 192 of the combinations have a 1 for either the second or fourth digit. If you consider:
Half of all digits will have the second bit set to 1
Half of all digits will have the fourth bit set to 1
Half of those will overlap
Then that's half the digits, plus half the digits, minus half of half the digits. 1/2 + 1/2 - 1/4 = 3/4
iv) This is a duplicate of iii, so again, 192
b) If we're allowed to repeat the usage of the digits, then answer would be the number of values available to the power of the number of digits used. We're allowed six distinct digits, so the total combination of 9 digit numbers would be 6⁹, or 10077696
c) In this case we can look at it simply as permutations of the set {"ABC", "D", "E", "F"}, which gives us 4! which equals 24
4. An angle turns through
2/8 of the circle. What is
the measure of
this angle?
Answer:
Teachers already introduce the general concept of revolutions (turns) when they say things like "a full circle is 360°", but they can make the concept more numerically precise by saying "a full turn is 360°, a half turn is 180°, a quarter turn is 90°, and an eighth turn is 45°" or writing "1 rev = 360°, 1/2 rev = 180°, ...
Step-by-step explanation:
hope this help :)
( t _t )
Answer:
An angle that turns through 1 360 of a circle what is the measure in degrees of the angle
Step-by-step explanation:
Angles are typically measured in degrees or radians. Angle measure is based on a circle where a full turn around the circle is 360 degrees. Similarly, a half turn is 180 degrees, a fourth [quarter] turn is 90 degrees, and so on.
What is the exact value of cos7pi/12
(sqrt2 - sqrt6)/4 = - 0.259
cos ((7pi)/12) = cos 105 = - 0.259
Answer:
D. sprt2 - sqrt6/4
Step-by-step explanation:
If you mean the answer for edg that's what it is.
Hope that helps
3u - 10 =23
Simplify your answer as much as possible.
Ü
Х
Answer:
u=11
Step-by-step explanation:
3u - 10 = 20
3u-10+10=20+10 |+10
3u=33 |÷3
3/3*u=33/3
1*u=11
u=11
Find the unit tangent vector at the given value of t for the following parameterized curves.
r(t)= ⟨7–√e^t,3e^t,3e^t⟩
, for 0≤t≤1
; t=ln 2
Answer:
[tex]T(ln2)[/tex][tex]= <\sqrt{145} , \frac{6\sqrt{2} }{\sqrt{145} } , \frac{6\sqrt{2} }{\sqrt{145} } >[/tex]
Step-by-step explanation:
Given : [tex]r(t)=<7-\sqrt{e^t}, 3e^t,3e^t > .........(i)[/tex]
We first have to differentiate of equation [tex](i)[/tex]
[tex]r'(t) = < \frac{\sqrt{e^t} }{2} , 3e^t,3e^t> ..........(ii)[/tex]
Now to get a unit tangent vector at the given value of [tex]t[/tex], we put [tex]t = ln2[/tex] in equation [tex](ii)[/tex]
[tex]r'(ln2) = < \frac{\sqrt{e^{ln2}} }{2} , 3e^{ln2},3e^{ln2}>[/tex]
[tex]= <\frac{1}{\sqrt{2} } ,6,6>[/tex] [∵[tex]e^{lna}=a[/tex]]
Now to get a unit tangent vector , we will divide our vector [tex]r'(ln2)[/tex] by its magnitude. So let's first find the magnitude.
[tex]|r'(ln2)|=\sqrt{(\frac{1}{\sqrt{2} } )^2 +6^2+6^2}[/tex]
[tex]= \sqrt{\frac{1}{2}+36+36 }[/tex]
[tex]= \sqrt{\frac{145}{2} }[/tex]
Now we can find the our unit tangents vector.
[tex]T(ln2)=\frac{r'(ln2)}{|r'(ln2)|}[/tex]
[tex]= \frac{<\frac{1}{\sqrt{2}} ,6,6> }{\sqrt{\frac{145}{2}} }[/tex]
[tex]= <\frac{\frac{1}{\sqrt{2} } }{\sqrt{\frac{145}{2}} } ,\frac{6}{{\sqrt{\frac{145}{2}} }}, \frac{6}{{\sqrt{\frac{145}{2}} }} >[/tex]
[tex]= <\sqrt{145} , \frac{6\sqrt{2} }{\sqrt{145} } , \frac{6\sqrt{2} }{\sqrt{145} } >[/tex]
Hence, [tex]T(ln2)[/tex] [tex]= <\sqrt{145} , \frac{6\sqrt{2} }{\sqrt{145} } , \frac{6\sqrt{2} }{\sqrt{145} } >[/tex]
In art class, David painted an image of a bowl of fruit. For the oranges, he mixed 2 ounces of
white paint and 4 ounces of orange paint. For the peaches, he mixed 3 ounces of white paint
and 5 ounces of orange paint. Which type of fruit was a lighter shade of orange?
Answer: the peaches were a lighter shade of orange
Evaluate 3^2+ (7 - 2). 4 - 6 thirds
Answer:
ITS A STRANGE SEQUENCE OF EVENTS MI BOI-REGTOOFUNNY-FUNNYMIKE
Step-by-step explanation:
The two dot plots compare ages of girls and boys in a pottery class.
Which group has a greater median?
Answer:
you didn't post a picture :/
What is the length of side EF in the triangle? Please give a step by step explanation, I'm having lots of trouble finding the solution. Thank you!
Answer:
EF = 8.8 cm
Step-by-step explanation:
In the given right angled ΔDEF, DE is the hypotenuse while EF and DF are adjacent sides. So that applying the Pythagoras theorem, we have;
[tex]/hyp/^{2}[/tex] = [tex]/adj1/^{2}[/tex] + [tex]/adj2/^{2}[/tex]
[tex]/DE/^{2}[/tex] = [tex]/EF/^{2}[/tex] + [tex]/DF/^{2}[/tex]
[tex]/16.2/^{2}[/tex] = [tex]/EF/^{2}[/tex] + [tex]/13.6/^{2}[/tex]
262.44 = [tex]/EF/^{2}[/tex] + 184.96
[tex]/EF/^{2}[/tex] = 262.44 - 184.96
= 77.48
EF = [tex]\sqrt{77.48}[/tex]
= 8.8023
EF = 8.8 cm
The length of side EF is 8.8 cm.
Somebody confirm that I am not a complete moron please and thanks
Answer:
B
Step-by-step explanation:
Triangle B because 128°>90°
Answer:
it should be correct ANSWER D TRIANGLE B
Step-by-step explanation:
"An obtuse triangle is a triangle in which one of the angles is an obtuse angle. (Obviously, only a single angle in a triangle can be obtuse or it wouldn't be a triangle.) A triangle must be either obtuse, acute, or right"
-dont worry you are smart we are all good at something!
how do I work this out
Answer:
16
Step-by-step explanation:
4 x 4
3 digit number
when it is divided by 9 the remainder is 3
Answer:
Mabey 102 try that.
Step-by-step explanation:
Hope this helps!
Solve for x.
12x - 4 = 4(2x + 1)
Answer:
X = 2
Step-by-step explanation:
12x - 4 = 4(2x + 1) (multiple 2x and 1 by 4)
=> 12x - 4 = 8x + 4
=> 12x - 8x = 4+4 (and the alike terms together)
=> 4x = 8
=> x = 8/4 ( divide 8 and 4 by 4)
=> x = 2/1
=> x = 2
find the Pecimeter of the figure given below
Step-by-step explanation:
perimeter(P)=3+4+43+4+411Answer:
perimeter= 4+4+3
11
Step-by-step explanation:
....
Help me out, if right get brainlest
Answer:
PQN≈STR
Step-by-step explanation:
Use slopes to determine whether the lines AB and CD are parallel, perpendicular, or neither. SHOW WORK
A(-10, 8) and B (-9,4).
C (-5, 12) and D (2,9).
Answer:
Neither
Step-by-step explanation:
Slope for AB is -4
Slope for CD is -3/7
in order to find the slope use this formula attached
AB -9-(-10) / 4-8 = -4 your y2 is 4 your y1 is 8 / x2 is -9 x1 is -10
CD 9-12 / 2-(-5) your y2 is 9 your y1 is 12 / x2 is 2 x1 is -5
Answer: The lines will be neither
Line A is Purple dot
Line B is Blue dot
Line C is Red dot
Line D is Green dot
!!!!!!!!!!!!!!!!!!!! Yes
Answer:it id blurry but i think it is c
Step-by-step explanation:
Answer:
Step-by-step explanation:
gggh
Armenia is baking 24 batches of brownies for the bake sale. Each batch of
brownies takes 2 4/5cups of flour. What is a reasonable estimate of the
amount of flour that she will need to bake all twenty-four batches of
brownies?
A.96
B.72
C.60
D.48
Answer:
72
Step-by-step explanation:
2x24=48
4/5≈1
1x24=72
so its 72
Find the difference write the answer in simplest form 11/18 -1/6
Answer:
4/9
or
0.4
Step-by-step explanation:
3(x+5)-2(-3x+1)
PLZ Answer
The lgrsedfaffedadwaawdwaffweaf
What does that even say
help 5 start rating helpp\ plzzzzz
Answer:
hwbqjakakakakakakamamakjajajq
Where you include squares in the flow chart parallelogram, rectangle, quadrilateral
Answer:
yes
Step-by-step explanation:
it has 4 sides and thoes shapes heve sharp sides like a square
An item on sale costs 85% of the original price. The original price was $75.
Answer:
$63.75
Step-by-step explanation: I think
23.7-2.5x8= Work out
Answer:
23.7 -2.5 X 8 = 23.7 - 20
= 3.7
The perimeter of the triangle below is 10x - 3
Show how to solve
Five years ago, Mark was twice as old as Max. In three years, Max's age will be 2/3 that of Mark. What is the sum of their ages now
Answer:
4years
Step-by-step explanation:
Let the present age of Mark be x
Let the present age of Max be y
Five years ago
Mark = x-5
Max = y - 5
If mark was twice as old as Max, then;
x - 5 = 2(y-5)
x-5 = 2y - 10
x-2y = -10+5
x - 2y = -5 ... 1
In three years,
mark = x+3
Max = y+3
Now if Max's age will be 2/3 that of Mark, then;
x+3 = 2/3(y+3)
3(x+3) = 2(y+3)
3x + 9 = 2y+6
3x-2y = -3 .... 2
Solve 1 and 2 simultaneously
x - 2y = -5 ... 1
3x-2y = -3 .... 2
From 1: x = -5 + 2y
Substitute into 2:
3(-5+2y) - 2y = -3
-15 + 6y - 2y = -3
-15 + 4y = -3
4y = -3 + 15
4y = 12
y = 3
Recall thet x = -5+2y
x = -5+2(3)
x = -5 + 6
x = 1
The sum of their ages will be x+y
x+y = 1+3
x+y = 4
Hence the sum of their ages now is 4years
