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bogdanovich [222]
3 years ago
6

Lee's fifth grade class has 1.4 times as many students as Fred's.If there are total of 60 students, how many students does Fred

clas have?How many students does Lee's class have

Mathematics
1 answer:
Vikentia [17]3 years ago
8 0
L = Lee's class amount
F = Fred's class amount

we know the total of students for both classrooms is 60,
thus, L, whatever that is, plus F, whatever that may be, is 60,
or
L + F = 60

now, we also now, whatever Fred's class is, Lee's class is 1.4
times bigger
since Fred's class is F in size, Lee's is 1.4 * F then, or 1.4F
\bf \begin{cases}
L + F =60\\
\boxed{L}=1.4F\\
---------\\
\boxed{1.4F} + F =60
\end{cases}

solve for F

what's Lee's class? well, 1.4F

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ABCD- parallelogram, If the perimeter of Triangle CPQ is 15cm, Find the perimeter of triangle BAQ. Find the perimeter of triangl
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Answer:

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Step-by-step explanation:

A parallelogram is a quadrilateral (has 4 sides and 4 angle) with two pair of parallel and opposite sides. Opposite sides of a parallelogram are parallel and equal.

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∠CQP = ∠AQB (vertical angles), ∠QCP = ∠QBA (alternate angles are equal).

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\frac{AQ}{QP}=\frac{AB}{CP}  \\\\\frac{AQ}{6.33} =\frac{18}{6} \\\\AQ=\frac{18}{6}*6.33\\\\AQ = 19

\frac{BQ}{CQ}=\frac{AB}{CP}  \\\\\frac{BQ}{8/3} =\frac{18}{6} \\\\BQ=\frac{18}{6}*\frac{8}{3} \\\\BQ =8

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PD = CD + DP = 18 + 6 = 24

Perimeter of PDA = PA + PD + AD = 24 + 25.33 + 8 = 57.33 cm

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