How many liters of water should be added to 18 liters of a 14% bleach solution so that the remaining solution contains only 10% bleach?
Answers
:
Let w = amt of water required to make a 10% solution
:
.14(18) = .10(w+18)
2.52 = .1w + 1.8
2.52 - 1.8 = .1w
.72 = .1w
multiply both sides by 10
7.2 = w
:
7.2 liters of water added
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B) f(x) = abx - 4
C) f(x) = a(b-1)x
D) f(x) = a( 1 b )x
Answers
Answer: The answer is (D)
Step-by-step explanation: We are given four exponential functions, out of which we are to select the one that represents exponential decay.
Given that the following function is an exponential growth function.
We take the values of a and b as 2 and 3 respectively so that the given function represents exponential growth.
We have drawn the graphs of all the four exponential functions taking these values of 'a' and 'b' in the attached figure.
We will see the the graph of the fourth function will show an exponential decay.
and the rest three will show exponential growth.
Thus, (D) is the correct option.
f(x) = |x|
f(x) = 2|x|
f(x)=x^2
Answers
The parent function of all absolute value functions is the f(x) = |x|.
I'll explain why.
f(x) = 3x is a linear function.
f(x) = 2|x| is an absolute value function, but it has a vertical stretch by a factor of 2, and we want to find the parent function, it needs to be in the most simplest form.
f(x) = x² is a quadratic function.
So, the final answer is choice 2, f(x) = |x|.
Answer:
B
Step-by-step explanation:
I took the test
investment?
Answers
The percent profit on his total 20%.
What is Unitary method?
It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.
Steps to Use Unitary Method
First, let us make a note of the information we have. There are 5 ice-creams. 5 ice-creams cost $125.
- Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.
- Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.
Given:
Cost of old carpet =$25
He spends $15.00 to have it restored
So, he spend= 25+ 15 = 40
He sells it at = $50
Profit= 50-40 = 10
Profit %= P/ CP * 100
Profit % = 10/ 25 * 100
Profit %= 25% on CP
and, P% on selling price= 10/50* 100 = 20%
Learn more about profit percent here:
#SPJ5
+$15- restored
Total of $35 spend
$50 earned
- 35 what he spend
Total of 15$
To get the percent u divide 35 by 50=0.7 x100
The profit is 70%
8
of the box, and Bill has eaten
1
4
of the box of cereal. How many ounces are left in the box?
Answers
Answer:
2 ounces
Step-by-step explanation:
1 = 5/8 - 1/4 = 1/8
16 x 1/8 = 2 oz
Answer:
2 ounces left
Step-by-step explanation:
if anna ate 5/8 of the box, and Bill has eaten 1/4 of the box, then in total they’ve eaten 7/8 if the box (1/4 turns into 2/8 + 5/8)
1/8 of the box is left and 1/8 of 16 is 2. so 2 ounces would be left
Answers
Answer:
Step-by-step explanation:
2/5 is 0.4
0.75 is 3/4
5/8 is 0.625
0.875 is 7/8
2/5=0.4
0.75=3/4
5/8=0.625
0.875=7/8
Answers
7*130%=9.1
5.2*2+9.1*2=28.6 in
or You can just do
(4+7)*130%*2=28.6 in