Answer:
60ml of the 50% alcohol solution and 20ml of the 6% alcohol solution
Step-by-step explanation:
We can build a system of equation for solve this problem
x = first solution
y = second solution
x + y = 80
0.5x + 0.06y = 80 * 0.39
x + y = 80
0.5x + 0.06y = 31.2
x = 80 -y
0.5(80-y) + 0.06y = 31.2
40 - 0.5y + 0.06y = 31.2
-0.44y = -8.8
y = 20
x = 80 - 20 = 60
Please help me and show work please
Answer:
[tex]x=2[/tex]
Step-by-step explanation:
Since the scale is in equilibrium, both sides must be equal. Therefore, we have the following equation:
[tex][\text{Left Side} ]3x+3=[\text{Right Side}]9[/tex]
Solving for [tex]x[/tex]:
[tex]3x+3=9,\\3x=6,\\x=\boxed{2}[/tex]
Answer:x=2
Step-by-step explanation: try to first set up an equation. First we can see the scale is balanced so we know each side is equal to each other. You have 3 x boxes and 3 circles so our first side will be 3x+3. Now let’s move onto the second side. It has 9 circles so 3x+3=9. Now let’s solve!
Subtract 3
3x=6
Now divide by 3
X=2
Hope this helps
Log(10) u = 3/2 log(10) 4
u = 8
Step-by-step explanation:
log(10) u = log(10) 4^(3/2)
or
u = 4^(3/2)
= [sqrt(4)]^3
= (2)^3
= 8
given m||n, find the value of x. see attachment.
Answer:
6x-8=5x+14
x=22
this is the solution
(6x-8)°=(5x+14)°
_ _ _ _ _ +14= _ _ _ _ _ _-8= x=14+8=22°
(6×22-8)°=124°
(5×22+14)=124°
A trigonometric function compares the lengths of two sides of a right triangle. A trigonometric ratlo relates the angles of a triangle to the lengths
of its sides
True
False
Answer:
true
Step-by-step explanation:
no false sorry
the sum of two positive numbers is 588. minimize the sum of the first and three times the second
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Answer:
{587, 1}
Step-by-step explanation:
The sum will be minimized when the second number is as close to zero as is allowed. If the numbers must be positive integers, the sum is minimized when the numbers are {587, 1}.
If the numbers may be real numbers, then the values that minimize the sum are {588-, 0+}
_____
The "cost" of taking a unit from the sum 588 and assigning it to the second number is that the sum of first and 3 times the second goes up by 3. In order to minimize that sum, the second number must be minimized.
I really need help plsssssssssssssss help
Answer:
first spot 10, second 16, third 18, fourth 22
Answer:
The expression that represents the table is
y=4+2x
when x=3
y=4+2(3) = 10
When x=6
y=4+2(6)= 16.
Do this for all the values of x and you'll get the corresponding value for y
10
16
18
22.
Your answer would be
in the rectangle below, AE=2x+8, CE=5x+4, and m
Answer: 2x+8=12, 5x+4=29
Step-by-step explanation:
2x2=4+8=12
5x5=25+4=29
Hi I need help please
Answer:
Trapezoid. Big to small = 3:1
Square. Enlargement
Step-by-step explanation:
base 1 of trapezoids respectively big to small are 6:2 or 3:2
The purple shape is an enlarged form of the black square.
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Find the quotient for 5,600÷8
Answer:
700
Hope this helps!!
Answer:
700
Step-by-step explanation:
plz solve it CORRECTLY step by step plz
Answer:
Step-by-step explanation:
area of circle=π[tex]r^{2}[/tex]
=22/7*[tex]21^{2}[/tex]
=22/7*441
=9702/7
=1386 [tex]cm^{2}[/tex]
Answer:
1386cm sq
Step-by-step explanation:
formula to find area of circle is 22/7*radius sq
which is 22/7 * 21 * 21
= 22 * 3 * 21
= 1386
Hope this is helpful. Please mark brainliest....
The half-life a particular radioactive
substance is 1 year. If you started with
50 grams of this substance, how much
of it would remain after 3 years?
First, complete the equation:
Remaining Amount =
Answer:
Remaining amount is 6.25 gram
Step-by-step explanation:
After one year what you would be left with is 50/2 which is 25 gram
After the second year, you would be left with 50/4 which is 12.5
After the third year what's left is 50/8 i.e 6.25
What would you estimate for the length of a bass clarinet, assuming that it is modeled as a closed tube and that the lowest note it can play is a Db whose frequency is 69.3 Hz
5
Select the correct answer from each drop-down menu.
d
60°
30°
D
The product of sin 30° and sin 60° is same as the product of
vand
Answer:
The product of sin 30° and sin 60° is the same as the the product of cos 30° and cos 60°.
The product of sin 30° and sin 60° is same as the product of cos 30° and cos60°.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
We know that the sine function is a ratio of opposite side and hypotenuse.
The cosine function is a ratio of Adjacent side and hypotenuse.
Let us find the product of sin 30° and sin 60°
=sin 30°.sin 60°
=1/2.√3/2
=√3/4
Now we know that cos 60° is 1/2 and cos 30° is √3/2
Product cos 60° and cos 30°
cos 30°.cos 60°=1/2.√3/2
=√3/4
Hence, the product of sin 30° and sin 60° is same as the product of cos 30° and cos60°.
To learn more on trigonometry click:
https://brainly.com/question/25122835
#SPJ7
Please help me solve this problem
Answer:
72 in²
Step-by-step explanation:
lateral area: the surface area of a 3D figure, but excluding the area of any bases
the lateral area of this prism is the sum of the three rectangular sides.
calculate the third side of the triangle first because it's also the side of one of the rectangle:
√(5² - 4²) = 3
4 × 6 + 5 × 6 + 3 × 6 = 72
A car cost $19,956 How much will it cost a company to buy nine cars for its salespeople?
Answer:
179,604
Step-by-step explanation:
MARK ME BRAINLIST
Answer:
It will cost the company $179,604.
Step-by-step explanation:
Multiply the cost of 1 car by the number of cars needed:
19,956 × 9
179,604
f(x) = - 2x - 3
g(x) = 3x + 1
Find (f .g)(x).
Answer:
-6x² - 11x - 3
Step-by-step explanation:
This represents the product of the two functions.
(-2x-3)(3x+1) = -(2x+3)(3x+1) = -(6x² + 11x + 3) = -6x² - 11x - 3
What value(s) for n will make this expression true?
3.5 and -3.5
3.5 only
nl = 3.5
0 and 3.5
-3.5 only
Select the graph of y = tan x
Answer:
Graph B
Step-by-step explanation:
Answer:
B) is correct
Step-by-step explanation:
Simplify the following expression 10s-8s+2s=
Answer: 4s
Step-by-step explanation: 10s-8s=2s, 2s+2s=4s
Step-by-step explanation:
s =1/4 hope ut may help u
10s-8s+2s =0
12s-8s =0
4 s =0
s =1/4
The area of the kite is 30 m2. What is the value of x? Explain
Answer:
The area of a kite measures the space inside the four sides. The most common way to find the area is by using the formula A = xy/2, where x and y are the lengths of the diagonals.
Step-by-step explanation:
Find the base of a triangle with an area of 45 square yards and a height of 20 yards.
Answer:
Base, b = 4.5 yards
Step-by-step explanation:
Given the following data;
Area of triangle = 45 square yards
Height = 20 yards
To find the base of the triangle;
Mathematically, the area of a triangle is given by the formula;
Area of triangle = ½ * b * h
Where;
b is the base of the triangle.
h is the height of the triangle.
45 = ½ * b * 20
90 = 20b
Base, b = 90/20
Base, b = 4.5 yards
Find the equation of a line from the table:
X) (y)
6 14
7 17
8 20
9 23
10 26
A. Y= 3x + 4
B. Y= 2x + 4
C. Y= 2x - 4
D. Y= 3x - 4
Find the circumference of c
Answer:
47.12
Step-by-step explanation:
please help me. justify your answers!
Answer:
g. True
h. False
i. False
Step-by-step explanation:
g.
[tex]\frac{1}{14}[/tex] is half of [tex]\frac{1}{7}[/tex]
This would be true because half of a number can be found by multiplying by [tex]\frac{1}{2}[/tex]
If you multiplied [tex]\frac{1}{7} * \frac{1}{2}[/tex]
The numerator is 1 * 1 which is 1
And then the denominator is 7 * 2 which is 14
That would give you [tex]\frac{1}{14}[/tex]
h.
The products of two reciprocals is 0
This is not true
Reason being, reciprocals are just the number flipped. If you times the number by itself, you don't get 0, you get 1.
Ex: [tex]\frac{2}{8}[/tex]
Its reciprocal is [tex]\frac{8}{2}[/tex]
So multiply them together
[tex]\frac{2}{8}* \frac{8}{2}[/tex]
2 * 8 = 16
8 * 2 = 16
[tex]\frac{16}{16} = 1[/tex]
i.
A whole number does not have a reciprocal
This is incorrect. If you think about it, a whole number is just the number, over 1
Ex: [tex]\frac{6}{1}[/tex]
This is still a whole number even though its written in fraction form because if you divide 6 by 1, your still going to get 6.
If you an write it as a fraction, it has a reciprocal.
The reciprocal in this case would be [tex]\frac{1}{6}[/tex]
I hope this helps, don't be afraid to reach out with any further questions!
Answer:
T, F, F
Step-by-step explanation:
the average of 3 numbers is 15 two of the numbers are 7 and 10 what is the third number?
17
28
32
45
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Answer:
(b) 28
Step-by-step explanation:
The total of the 3 numbers will be 3×15 = 45. Then the third number is ...
45 -7 -10 = 28
The point (-8,0) reflected in the x-axis is
Answer:
That would be (8,0) my good sir ( ma'am )
Step-by-step explanation:
Have a nice day
Jada walks dogs to earn money. The points in this graph represent the total amount of money Jada earns based on the number of hours she walks dogs. Jada wants to purchase a new jacket that costs $32.
How many hours does Jada need to walk dogs to earn enough money to buy the jacket?
Answer:
I can't see the graph to know how mych she earns just reply to me how much
I need to find x based off of the models
Answer:
2. 9x - 4= 12x - 55
9x - 12x = -55+4
-3x = -51
x = 17
3. 7x +29 = 11x - 31
7x - 11x = -31-29
-4x = -60
x =15
Roper works 40 hours per week regularly , at a rate of 16.20 per hour. When he works over time his rate is time and a half of his regularly hourly rate . What is his hourly overtime rate ?
A) 24.30
B)25.67
C)26.50
D)27.54
Answer:
over time pay would be $24.30/hr
16.20 +(1/2 16.20) = 24.30
Which of the following represents the sum of points p and t plotted below?
р
t
-7
6
-5
4
3
-2
-1
0
1
2
4
5
6
7
A. -6
B. 6
C. -2
O
D. 2
Answer: -1
Step-by-step explanation: