Answer:
-7°C
Step-by-step explanation:
Freezing point of water = 0°C
By adding salt, freezing point lowers by 7°C ;
The freezing point of salt water can be expressed as ;
Since temperature lowers :
Freezing point of salt water :
Freezing point of water - 7°C
0°C - 7°C
= - 7°C
I WOULD LIKE AN ACRUAL EXPLANATION, I NEED TO UNDERSTAND THIS, THANK YOU
csc^-1 4.25 to degrees
9514 1404 393
Answer:
13.609°
Step-by-step explanation:
The csc^-1 function is the arccosecant function. It gives the angle whose cosecant is given. If we let A represent that angle, your statement is ...
A = csc^-1(4.25)
It is used to solve the relation ...
4.25 = csc(A)
__
Some calculators can give you the value directly (see attached). Most cannot. In any event, you need to make sure the angle mode for the calculator is set to degrees.
When your calculator does not have the csc^-1 function, you can make use of the trig identity ...
csc(x) = 1/sin(x)
In the above equation, this becomes ...
4.25 = 1/sin(A)
sin(A) = 1/4.25 . . . . . solve for sin(A)
All scientific and graphing calculators will have the inverse sine (arcsine) function.
A = sin^-1(1/4.25)
A ≈ 13.609° . . . . . . . calculator mode in Degrees
_____
Additional comment
For inverse functions, especially inverse trig functions, I find it useful to read them as ...
csc^-1(x) ⇒ "the angle whose cosecant is x"
sin^-1(x) ⇒ "the angle whose sine is x"
This reminds me that the value it gives is an angle (degrees or radians), and the argument it takes is a pure number (one with no units).
8. You throw a ball downward 40 feet per second from a building
that is 256 feet above the ground. How long will it take
the ball to hit the ground?
Answer:
6.16?
Step-by-step explanation:
Not completely sure but if you divide 256 by 40 you get six remainder 16 not sure if I did it right so sorry if I am wrong
solve the right triangle. round your answer to the nearest tenth
Answer:
?
Step-by-step explanation:
How many 1-foot-square border tiles would you need to surround a pool
that is 10 feet long and 5 feet wide? *
Find the volume of the sphere .
Answer:
1436.8cm³
Step-by-step explanation:
Formula :
[tex] \frac{4}{3} \times \pi \times r ^{3} [/tex]
[tex] \frac{4}{3} \times \pi \times 7^{3} [/tex]
=1436.75504cm³
to 1dp
=1436.8cm³
Simplify (3v^5+8v^3−10v^2 )−(−12v^5 +4v^3+14v^2 ) . Write answer in standard form.
please help
Answer
15v^5+4v^3-24v^2
PLEASE HELP ME!!! I'M GIVING 11 POINTS
1. Mara has $640 in her bank account. If she withdraws $30 every month, in how many months will she have $370 remaining in her account
2. Make up an equation that has no solution and explain what that means. (Hint: It has to be a real explanation, not just "it doesn't work").
Answer:
610, 580, 550, 520, 490, 460, 430, 400, 370 It takes 9 months
Step-by-step explanation:
2: 1.50+x=π This problem is impossible. This is because Pi is a number that goes for infinitiy so there is no answer for x. This also means ∞ can also be an answer.
Answer:
1. 9
2.
Step-by-step explanation:
1. Mara has $640 in her bank account, she withdraws $30 each month. We don't know how many months will she withdraw until 370$. Let's write an expression first:
640 - 30x = 370
Now, subtract both sides by 640 to get -270:
-30x = -270
Last, divide both side by -30:
-30x = 270
x = 9
Now, we know she withdraws $30 for 9 months.
2. 2 + 4(3 - 2) = x
This tells us that we do not know the answer until we solve it.
2 + 4(3 - 2) = x
2 + 12 - 8 = x
6 = x
If you watched any or both of these movies, make a 5 sentence summary about it
(ill give brainly and 25 points) :)
Answer:
Disney The Jungle Book (the first one): Mowgli (played by Neel Sethi) is a young boy that was raised by a family of wolves. One day he has to leave his home when the fearsome tiger, named Shere Khan (voiced by Idris Elba) unleashes a powerful roar. With aid from a panther (voiced by Ben Kingsley) and a care-free bear (voiced by Bill Murray), Mowgli meets a ton of new jungle animals. A few of which include a slithery python and a friendly ape. Along his way, Mowgli learns valuable lessons about life in this movie full of fun and adventure.
The Jungle Book (the second one): This is a classic Walt Disney animation that is based on Rudyard Kipling's book. Mowgli is a young, abandoned child who was raised by wolves. One day his peaceful life is threatened by the evil tiger, named Shere Khan (voiced by George Sanders). Mowgli must leave his wolf family behind in order to return to the "man village." Throughout his quest he is not alone, aided by a panther named Bagheera, and later on, a carefree bear named Balloo, he traverses the jungle's many perils.
Step-by-step explanation:
Hope this helps :)
Help I need to do that I don’t even know what it is I’ll
Give brianliest
Answer:
Step-by-step explanation:
1. f(x) = 5x² + 3x - 1
a. f(0) = 5·0² + 3·0 - 1 = -1
b. f(-1) = 5(-1)² + 3(-1) - 1 = 1
Do the same for f(2), f(√2), f(a+2), and f(a).
Then do the same thing for the next function.
2. f(x) = x/(1-x)
a. f(0) = 0/(1-0) = 0
Do the same for f(-1), f(2), f(√2), f(a+2), and f(a).
Find KL. URGENT!!!!!!
Step-by-step explanation:
JM = 27 ---- ( given )
JM = KL
so, KL = 27
------------------------------FOLLOW MEIf two lines have the same y intercept and the same slope will they intercept at exactly one point?
True or false or partly true
Answer:
False because the lines would be going somewhat in this direction // both lines would be like that so they wouldnt intercept unless the lines were to go like /\ then they would intercept
Is this non linear or linear?
Mark the absolute maximum point of the graph
Mr lin has 10 baesball his gym make 4 teams
Answer:
Mr. Lin can only have 2 people in his 4 teams but he will have 2 people without a group
Step-by-step explanation:
It would be better if he had 5 teams because everyone will be able to be in a team
what is -2/3 times -12. This questions is related to converting slope point form into slope intercept form.
Answer:
-2/3 times -12=8
Step-by-step explanation:
1) 12. 1 7 round to the nearest whole number
Answer:
12
Step-by-step explanation:
12.3 would be rounded uo but since it's a whole number it would be 12.
Lani opened a savings account with
$450. She saves $225 per month. Which
equation shows how many months, m,
Lani would have to save to have a total of
$1575 in her account?
A 1575=-450/225
B 1575 = 450m +225m
C 1575 = 450 +225m
D 1575 = 225 +450m
Answer:
The answer would be C
Step-by-step explanation:
2) Select one of your sides.
Side: Nachos Price: 3.00
Your cost to make this side just became
cheaper. As a result, you are going to
decrease the price by $0.25. What is
the percent of change ?
Answer:
Derek earns $ 4800 in 3 months. what is his annual income
Answer: Annual Income Is $192000
Step-by-step explanation:
firstly know one month income we divide by 48000 by 3
= 16000
we know one month income 16000
than we for know annual income we multiply by 12
16000×12 =192000
annual income is $192000
find the y-coordinate of the y-intercept of the polynomial function defined below f(x)=2x(x^2+3)
Answer:
y-intercept is (0,0). Mark brainliest?
Answer:
Step-by-step explanation:
2x([tex]x^{2}[/tex] + 3)
when x = 0 then we have a y intercept
2[tex]x^{3}[/tex] +6x
so b/c both terms have an x in them
we know the only time this function hits the y intercept is when y is zero
got it?
answer y = 0
el tema es desigualdades con valor absoluto
Answer:
i need english
Step-by-step explanation:
Will give brainliest! Given the 3 lengths of a triangle are 6 in, 8 in, and 11 in. A) Will this make a triangle? B) Will it be a right triangle?
Answer:
yes and no
Step-by-step explanation:
l
8. By using coupons, Mary Jo is able to decrease the retail price of her groceries, g, by $125. you find the nroduct of the base and height and then divide by 2. Expression.
Answer:
is there more to it? if not i dont understand what they are asking.
Step-by-step explanation:
Chords and arcs
Find the value of x.
Answer:
The answer is 2
As we can see lineAB is the same as lineCD
Colin can type 30 words in a minute How many words can be typed in 2.5 minutes?
Answer:
75 words in 2.5 minutes
Step-by-step explanation:
30 words - 1 min
60 words - 2 min
30/2 = half a minute
=15
60+15=
75 words
Ursula scored 8 points in the second half of her basketball game. In total, she scored 32 points during the entire game. Click on the equation that can be used to determine how many points, p, Ursula scored in the first half of the game.
Answer:
.
Step-by-step explanation:
.
(x - 12y = -4
( x - 9y = 7
9514 1404 393
Answer:
(x, y) = (40, 11/3)
Step-by-step explanation:
The variable x can be eliminated by subtracting the first equation from the second.
(x -9y) -(x -12y) = (7) -(-4)
3y = 11 . . . . . . .simpify
y = 11/3 . . . . . .divide by 3
x -9(11/3) = 7 . . . . substitute for y in the second equation
x = 40 . . . . . . . add 33
The solution is (x, y) = (40, 11/3).
Expand and simplify (x - 9)(x + 2)
pls, help need it ASAP!!
(
−
9
)
(
+
2
)
(
+
2
)
−
9
(
+
2
)
Answer:
x squared - 7x -18
Step-by-step explanation:
x * x = x^2
x * 2 = 2x
-9 * x = -9x
-9 * 2= -18
x^2-7x-18
3) In the diagram shown, circles with centers at points A and B intersect at points Cand D. Segments AC, BC, AD and BD have been drawn to form quadrilateral ACBD. Circle A has a radius of length 5 cm and circle B has a radius of 3 cm. What is the perimeter of ACBD? Justify. (3 points)
Answer:
16 cm
Step-by-step explanation:
Whatever the positions of A and B changed, AC always = AD = 5 cm
and BC = BD = 3 cm
perimeter of ACBD = 2*5 + 2*3 = 16 cm
A bird can lay either white or brown eggs. Three white eggs
and
two brown eggs have a mass of 13 grams, while five white eggs
and four brown eggs have a mass of 24 grams. Find the mass
of a brown egg and of a white egg.
Answer:
Mass of brown egg = 3.5 grams
Mass of white egg = 2 grams
Step-by-step explanation:
Let
Mass of brown eggs = x
Mass of white eggs = y
3y + 2x = 13 (1)
5y + 4x = 24 (2)
Multiply (1) by 5 and (2) by 3 to eliminate y
15y + 10x = 65 (3)
15y + 12x = 72 (4)
Subtract (3) from (4)
12x - 10x = 72 - 65
2x = 7
x = 7/2
x = 3.5
Substitute x = 3.5 into (1)
3y + 2x = 13 (1)
3y + 2(3.5) = 13
3y + 7 = 13
3y = 13 - 7
3y = 6
y = 6/3
y = 2
Mass of brown egg = 3.5 grams
Mass of white egg = 2 grams