Answer:
Step-by-step explanation:
26% is (26-20)/(50-20) = 6/30 = 1/5 of the way between 20% and 50%. That means 1/5 of the solution is 50% acid.
50% acid: 1/5 · 100 mL = 20 mL
20% acid: 100 mL -20 mL = 80 mL
Delbert must mix 80 mL of 20% acid and 20 mL of 50% acid.
_____
Maybe you'd like to see an equation. Let x represent the amount of 50% acid required. Then 100-x is the amount of 20% acid needed. The amount of acid in the mix is ...
0.50(x) +0.20(100 -x) = 0.26(100)
(0.50 -0.20)x = (0.26 -0.20)100 . . . . subtract 0.20(100)
x = (0.26 -0.20)/(0.50 -0.20)×100 = 20
This last expression should look a lot like the one we started with in this answer. It shows you how you can almost write down the answer to mixture problems without a lot of work.
Answer:
Step-by-step explanation:
Using the rules of exponents
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Given
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Answer:it should be 48 in
im not 100% sure
Step-by-step explanation:
Answer:
Check the explanation
Step-by-step explanation:
Scatter plot
x---square feet
y---rent
SolutionA:
Kindly check the attached image below:
THERE EXISTS A WEAK POSITIVE RELATIONSHIP BETWEEN SQUARE FEET AND RENT .
AS SQUARE FEET INCREASES RENT INCREASES
SolutionB:
Rent=0.4932(squarefeet)+992.99
slope=m=0.4932
Y intercept=992.99
SolutionC:
Interpretation of slope:
slope =m=change in rent/change in square foot
For a unit increase in square feet rent increases by 0.4932
Interpretation of y intercept:
when square feet=0 rent is 992.99
Solutiond:
when squarefeet=800
Rent=0.4932(squarefeet)+992.99
=Rent=0.4932(800)+992.99
=1387.55
Answer:
In general, we already know how to solve problems in a right triangle using the concept of trigonometry. Meanwhile, as we also know that the type of triangle is not only a right triangle, but there are isosceles, equilateral, or even random triangles. The question is how to solve the problems that exist in these triangles It is known that there is an arbitrary triangle with sides a, b, and c. The angle formed in front of side a is called angle α, the angle formed in front of side b is called angle β, and the angle formed in front of side c is called angle γ = 5
Step-by-step explanation:
x" + 5x + 6 = 0
(x + 2)(x + 3) = 0
x + 2 = 0
x = -2
x + 3 = 0
x = -3
#semogamembantu
