Answer:
a) 7/4 b) 15/2
Step-by-step explanation:
a) Scale Factor = Image / Object
Take the side of Triangle ABC that's BC Why? Because it corresponds with the Image Triangle ADE's DE
= 21/12 = 7/4
b) 7/4 = 10+ x / 10
Cross Multiply
= 4 ( 10 + x ) = 70
= 40 + 4x = 70
= 4x = 70-40
= 4x = 30
= 4x/4 = 30/4
x = 15/2
Answer:
x = 2√2
Step-by-step explanation:
This is a 45-45-90 triangle. This means that if the legs are x, then the hypotenuse is x√2.
In the case, the hypotenuse is already 4. So we have the equation:
x√2 = 4
Multiply both sides by √2
2x = 4√2
Divide both sides by 2
x = 2√2
Answer:
She said it was this
Step-by-step explanation:
1924
Answer:
The algebraic expression is v = 2x
v is the volume of the sugar syrup and
x is the mass of sugar in grams.
Step-by-step explanation:
Let x be the mass of sugar in grams and v be the volume of sugar syrup.
So, mass of sugar in grams/volume of sugar syrup × 100 % = 50 %
x/v × 100 % = 50 %
x/v = 50/100
x/v = 1/2
v = 2x
So, the algebraic expression required is v = 2x where v is the volume of the sugar syrup and x is the mass of sugar in grams.
The average rate of change in the median household income over this time period is $745.5
<h3>What is the average rate of change in the median household income over this time period?</h3>
The given parameters are:
2000, the median household income was $41,990.
2010, it was $49,445.
The average rate of change in the median household income over this time period is calculated as:
Average rate of change = (Difference in Income)/(Difference in years)
So, we have:
Average rate of change = (41990 - 49445)/(2000-2010)
Evaluate
Average rate of change = 745.5
Hence, the average rate of change in the median household income over this time period is $745.5
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