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3 years ago

Write a polynomial that represents the area of the football field. Write your answer in standard form.

Mathematics

2 answers:

posledela3 years ago

6 0

Answer:

40x² + 240x + 200

Step-by-step explanation:

The area (A) of the rectangular pitch is calculated as

A = lb ( l is the length and b the breadth )

= (10x + 10)(4x + 20)

Each term in the second factor is multiplied by each term in the first factor, that is

10x(4x + 20) + 10(4x + 20) ← distribute both parenthesis

= 40x² + 200x + 40x + 200 ← collect like terms, thus

A = 40x² + 240x + 200 ← in standard form

forsale [732]3 years ago

5 0

Answer:

40x² + 240x + 200

Step-by-step explanation:

(10x + 10) (4x + 20) = 40x² + 240x + 200

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Sonbull [250]

Answer:

4 years

Step-by-step explanation:

As 4*8 is 32

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3 years ago

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Step-by-step explanation:

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4 years ago

There are 40 marbles in a bag if 14 if the marbles are red what percent of the marbles in the bag are red

Neporo4naja [7]

$\frac{14}{40} \times 100\%=\frac{7 \times 2}{20 \times 2} \times 100\%=\frac{7}{20} \times 100\%=7 \times \frac{100}{20} \%=7 \times 5\%=35\%$

35% of the marbles are red.

4 0

3 years ago

( Angle congruence and transformation ) Plz, if anyone can answer these I would appreciate it so much

posledela

Answer:

see explanation

Step-by-step explanation:

Since the triangles are similar then the ratio of corresponding sides are equal

(a)

$\frac{AB}{DE}$ = $\frac{BC}{EF}$ , substitute values

$\frac{AB}{17.64}$ = $\frac{6.3}{13.23}$ ( cross- multiply )

13.23AB = 111.132 ( divide both sides by 13.23 )

AB = 8.4

(b)

$\frac{DF}{AC}$ = $\frac{EF}{BC}$ , substitute values

$\frac{DF}{4.1}$ = $\frac{13.23}{6.3}$ ( cross- multiply )

6.3DF = 54.243 ( divide both sides by 6.3 )

DF = 8.61

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4 years ago