Hello! I can help you with this question! To find the unit rate, we’ll have to divide total by number of units. Or in this case, miles/gallons. 325.4/17.3 is 18.809 and other numbers, or 18.81 when rounded to the nearest hundredth. If you’re looking for the answer to the nearest hundredth, the answer is 18.81 mpg. Or, if you’re looking for the answer to the nearest whole number, the answer is 19 mpg.
Answer:
x + 2x = 21
Or
3x = 21
Step-by-step explanation:
Let the required number be x.
Two times of the number = 2x
Above statement in Mathematical form can be expressed as:
A=(2,4); B=(3,9); C=(4,1)
A'=(4,-2); B'=(9,-3); C'=(1,-4)
All the points P=(x,y) change to P'=(y,-x), this corresponds to a rotation counterclockwise about the origin, then:
Answer: Triangle ABC is
First box: rotated counterclockwise
Second box: 90° about the origin
to form triangle A'B'C'
Answer: 50%
Explanation:
A child is either a boy or a girl
P(a boy) = 1/2 = 50%
Answer:
Step-by-step explanation:
The answer to this problem can be found by writing an equation for the total interest in terms of the amounts invested at each rate.
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<h3>setup</h3>
Let x represent the amount invested at 9% (the higher rate). Then (11000-x) is the amount invested at 3%, and the total interest earned is ...
0.09x +0.03(11000 -x) = 750
<h3>solution</h3>
0.06x = 420 . . . . . . . subtract 330 and simplify
x = 7000 . . . . . . . divide by 0.06 . . . amount invested at 9%
11000 -7000 = 4000 . . . amount invested at 3%
Larry invested $4000 at 3%, and $7000 at 9%.
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<em>Additional comment</em>
In "mixture" problems of this type, it generally works well to let the variable represent the amount of the highest-value contributor. That way, the equations end up with positive coefficients, tending to reduce errors.