Answer:
72 square units
Step-by-step explanation:
- Identify the height
- Identify the length
- Multiply those two together
- That is your answer
H = 9 units
L = 8 units
A = H × L
A = 9 × 8
A = 72 square units
Answer:
0
Step-by-step explanation:
The 'scale' of the map is a ratio (or a fraction).
It's <em>(length on the map) / (distance in the real world)</em> .
Different maps have different scales, but the scale is normally the same
everywhere on the same map. So no matter <em>where</em> it is on the map, or <em>how </em>
<em>long</em> the distance is on the map, the ratio is always the <em>same number</em> on <em>that</em>
<em>map</em>.
On this particular map in this question, the ratio is (3.5 inches) / (210 miles) .
Any other measurement on the same map has the same ratio ... and what do
you have when you have equal ratios ?? That's right ! A proportion ! !
The other measurement has the ratio (1.75 inches) / (X miles) , and <u>THAT</u>
fraction is equal to the other one.
(1.75) / ( X ) = (3.5) / (210)
Cross-multiply in the proportion: (1.75 times 210) = (3.5 times X).
Can you find 'X' now ?
Hint: Divide both sides of that equation by 3.5 .
bearing in mind that
standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
8 - 5y = - 2x
2x - 5y = - 8
To estimate the amount Bradley would have at age 73 if he started investing in 40 we use the future annuity formula given by:
A=P[((1+r)^n-1)/r]
where:
P=principle
r=rate
n=time
thus plugging in the values we get:
A=12×550=$6600
n=73-40=33
r=7%
hence
A=6600[((1.07)^33-1)/0.07]
simplifying the ^ we get:
A=784,960.6054
Hence the answer is: $784, 960.6054
