Answer:
We must add 400 ml of water.
Step-by-step explanation:
We can use the following equation:
[tex]C_{i}V_{i}=C_{f}V_{f}[/tex]
Where:
C(i) is the initial concentration of the solution (80%)C(f) is the final concentration of the solution (30%)V(i) is the initial volume (150 ml)V(f) is the final volumeNow, we just need to solve the equation for V(f).
[tex]V_{f}=\frac{C_{i}V_{i}}{C_{f}}[/tex]
[tex]V_{f}=\frac{80*150}{30}[/tex]
[tex]V_{f}=400\: ml[/tex]
Therefore, we must add 400 ml of water.
I hope it helps you!
A line segment with endpoints (7,5) and (10, 1) is reflected across the line y = -x. Which pair of coordinates represents the endpoints of the given segment after the reflection?
A (-7, 5) and (-10, 1)
B (-5, -7) and (-1, -10)
C(5, 7) and (1, 10)
D (7,-5) and (10,-1)
Answer:
D. (7,-5) and (10,-1)
Step-by-step explanation:
Because 7 and 10 are on the Y and -5 and -1 is on the X
Assume that y varies directly with x. If y=2/5 when x=1/3, find y when x=1/4. Enter in any fractions using a / (e.g. "1/2" is the same as 12).
x=3/15 thus y=6/15 If x=1/4 then y =2/4
PLEASE HELP IM SO BAD AT MATH AND I AHVE A 25 IN IT PPLELSLSLSL
Answer:
for the shirts made column its 1, 2, 3, 4, 5
for the cost of machine it's 2 and 150
and for total cost its 160, 180, and 200
Step-by-step explanation:
what is the profits?,plz help
8^9•8^7
rewrite the following expression using each base only once
Answer:
[tex] 8^{16} [/tex]
Step-by-step explanation:
[tex] 8^9 \cdot 8^7 [/tex]
Use the rule
[tex] a^m \times a^n = a^{m + n} [/tex]
[tex] 8^9 \times 8^7 = 8^{9 + 7} = 8^{16} [/tex]
Enter the number that makes the equation true
Hi there! The answer for this question would be 9!
Explanation:
0.09 is also 9 since 1.00 is 1 whole in fraction form. This means that 0.09 is also 9/100 in fraction form.
Final Result: 9
Answer: 9
Step-by-step explanation:
On both sides of the equation, there is the 27/100. So we can essentially ignore that because the other two terms just have to be equal. The 0.09 has a 9 in the hundredths place. So that means the decimal is equivalent to 9/100
f (x) = x + 5 and g(x) = 2x Find (f +g)(x)
Answer:
Step-by-step explanation:
f(x)=x+5 and g(x)=2x
(f∘g)(x)=f(g(x))=f(2x)=5+(2x)=2x+5
(g∘f)(x)=g(f(x))=g(x+5)=2(x+5)=2x+10
(f∘g)(x)=2x+5
(g∘f)(x)=2x+10
Round to the hundredths place.
$4.56 for 18 cookies
Please help! Will give brainliest
Answer:
d=1/2
b=1/25
b(row 2)=1/5
e=7/100
explanation: think about them as numbers out of 100 then simplify :)
Answer:
4% = 1/25
20% = 1/5
50% = 1/2
7% = 7/100
i sincerely apologize if any of these are incorrect
find the glide reflection image of the image of the black triangle for the composition
(R x-1 °T <0,-7>)
Answer
-17
Step-by-step explanation:
i used a calculator
The glide reflection of the figure is given below. Therefore, option D is the correct answer.
What is a glide reflection?Glide Reflection is a composition of transformations. In glide reflection, a translation is first performed on the figure then it is reflected over a line.
From the given figure, labelled the black triangle as A, B and C.
The coordinates of triangle ABC are; A= (2,8) , B= (2,5) and C=(6,5)
To find the glide reflection image of the triangle ABC.
Given: The rule of translation is: (x, y)→(x, y-7) and the line of reflection is x= 1.
Now, apply the rule of translation to the black triangle, and we get;
A(2, 8)→(2, 8-7)=A'(2, 1)
B(2, 5)→(2, 5-7)=B'(2, -2)
C(6, 5)→(6, 5-7)=C'(6, -2)
Now, apply the rule of reflection over the line x =1.
That is, (x, y)→(-x+2, y)
A'(2, 1)→(-2+2, 1)=A''(0, 1)
B'(2, -2)→(-2+2, -2)=B''(0, -2)
C'(6, -2)→(-6+2, -2)=C''(-4, -2)
You can see the graph of the Glide reflection as shown below.
Therefore, option D is the correct answer.
To learn more about the Glide reflection visit:
https://brainly.com/question/23836664.
#SPJ5
SOMEONE HELP. ME pllessseeee
Answer:
4x+2=22
4x=22-2
4x=20
x=20/4
x=5
Answer:
x = 5
Step-by-step explanation:
First step - subtract 2 from both sides:
4x + 2 - 2 = 22 - 2 which simplifies to 4x = 20
Second step - divide both sides by 4:
4x ÷ 4 = 20 ÷ 4 which simplifies to x = 5
Kevin measured a line to be 12.4 inches long. If the actual length of the line is 15.7 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?
Answer:
The percent error of the measurement, to the nearest tenth of a percent is [tex]21.0\%[/tex]
Step-by-step explanation:
Estimated length of a line = 12.4 inches
Actual length of the line = 15.7 inches
Error = 15.7 - 12.4 = 3.3 inches
Percent error of the measurement [tex]=\frac{3.3}{15.7}(100)=21.02[/tex] ≈ 21.0
So, the percent error of the measurement, to the nearest tenth of a percent is [tex]21.0\%[/tex]
Your math teacher loves to collect markers and pencils. If she has 9 more markers than pencils and has a total of 41 writing utensils, how many pencils does your teacher have? please explain pleaseee
Answer:
16
Step-by-step explanation:
There is a total of 41 writing utensils, if you have 9 more pencils than markers you need to subtract 9 from 41. Then half that number so you will get the total amount of pencils.
41-9=32
32/2=16
decide weather 4x-6=x+3
Answer:
= 3
Step-by-step explanation:
Give the domain and range of each relation. Tell whether the relation is function. Explain. (GUYS I NEED HELP IDEK WHAT DOMAIN OR FUNCTION MEANS) pls help
Answer:
Domain: [0, 4]
Range: [0, 4]
Function? Yes
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x) Range is the set of y-values that are outputted by function f(x) Vertical Line Test - no function can have the same x-value for different y-coordinatesStep-by-step explanation:
According to the graph, our x-values span from 0 to 4. Since both are closed dot, they are inclusive in the domain:
Interval Notation - [0, 4]
Inequality Notation - 0 ≤ x ≤ 4
According to the graph, our y-values span from 0 to 4. Since both are closed dot, they are inclusive in the range:
Interval Notation - [0, 4]
Inequality Notation - 0 ≤ x ≤ 4
Since we see that each x-value has a unique y-value and passes the vertical line test.
∴ the relation is a function.
How do you get from the first step to the second step????? Please help?!??
Answer:
go
Step-by-step explanation:
Katrina is going to order sweatshirts for her girls mentoring group. The sweatshirts will have the group logo printed on the front. Katrina asks two local companies to give her a price.
MH Designs will charge $21.50 for each of the sweatshirts.
Print Rich will charge $18 for each sweatshirt plus a one-time setup cost of $70.
A model ship is built to a scale of 1 centimeter = 5 meters. The length of the
model is 30 centimeters. What is the actual length of the shig?
Answer:
150 meters
Step-by-step explanation:
Since 1 x 30 gives the 30
5 x 30= 150
Julie is x years old. Kevin is x+3 years old & Omar is 2x years old. Write an expression , in terms of x , for the mean of their ages.
Answer:
(x+x+3+2x)/3 = (4x+3)/3
Step-by-step explanation:
Plz help....................
Answer:
I think it is 10x +40
Step-by-step explanation:
Answer:
C. 10x - 40
Step-by-step explanation:
5 times 2x is 10x. 5 times -8 is -40. Put them together to get 10x - 40.
Hope it helps!
A 228 foot cable is attached to a 43 foot tower. What
angle would the cable make with the ground?
plsssssssssssss helpppppppppppp
Answer:
A. 0
Step-by-step explanation:
3*0 is less than 18
what is 2/3 (6x - 1/6) + 3x?
answer::
7x=-1/9!!!!!
[tex] = \tt \frac{2}{3} (6x - \frac{1}{6} ) + 3x [/tex]
[tex] =\tt \frac{2}{3} \times 6x - \frac{2}{3} \times \frac{1}{6} + 3x[/tex]
[tex] =\tt \frac{2 \times 6}{3}x - \frac{2 \times 1}{3 \times 6} + 3x[/tex]
[tex] = \tt \frac{12}{3} x - \frac{2}{18} + 3x [/tex]
[tex] =\tt 4x - \frac{2 \div 2}{18 \div 2} + 3x[/tex]
[tex] = \tt4 x- \frac{1}{9} + 3x[/tex]
[tex] = \tt4x + 3x - \frac{1}{9} [/tex]
[tex] \color{plum}= \tt\bold{7x - \frac{1}{9} }[/tex]
Therefore,[tex] \color{hotpink}\tt \frac{2}{3} (6x - \frac{1}{6} ) + 3x \color{plm}= \color{plum}\tt\bold{7x - \frac{1}{9} } [/tex]
What is the Unit price of 5 tickets for $5.00 ?
Answer:
$25
Step-by-step explanation:
can you help me due at 10:00
When adding terms, we look for terms that are _____________.
1.similar
2.different
3.variables
4.coefficient
Answer:
1
Step-by-step explanation:
2. Which equation is equivalent to 2 + 4x = 5 - 3(x + 1)? A. 2 + 4x = 2x - 3 B. 2 + 4% = 5 - 3 -3. C. 6x = 5-(+ 1). D. 2 + 4 = 2/5 1).
Answer:
B) 2 + 4x = 5 - 3 - 3x
Step-by-step explanation:
By simplifying JUST the right side and re-arranging them
2 + 4x = 5 - 3(x + 1),
2 + 4x = 5 - 3x -3,
2 + 4x = 5 -3 - 3x
Glen, Andre, and Ramón share the cost of renting a vacation cottage. The total cost is $960. Glen pays 30% of the total cost. Andre pays 0.45 of the total cost. Ramón pays the rest. How much does Ramón pay?
Answer:
Ramon pays $240.
Step-by-step explanation:
30% of $960 is $288, so Glen pays $288
0.45 = 45%
45% of $960 is $432, so Andre pays $432
30% + 45% = 75% meaning Ramon pays 100% - 75% which is 25%.
25% of $960 is $240. So, Ramon pays $240.
You could also add up the payments of Andre and Glen and subtract that sum from $960 to get the same answer.
PLZ HELP MARK U BRAINLIEST
Answer:
=15
_
96 heuehueh Enjoy your answer
Solve this equation.
x + 5 = -4
Answer:
-9
Step-by-step explanation:
Answer:
the answer is x=-9
Step-by-step explanation:
hoped I helped:)
$1111 at 11% for 11 years
Answer:
$1344.31
Step-by-step explanation:
1111*0.11*11=1344.31